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        Last 14 days
        500

        104 API jobs in Hertfordshire + 20 miles

        396 exact matches jobs are outside your preferred location

        AI Software Developer (Python, JavaScript, ML)

        Salt
        London
        £500 - £800 per day
        Day rate: £500 - £800 (inside IR35) Duration: 6 - 12 months - Start: ASAP - Hybrid: 3 days on site per week - My client is looking for a Software Developer with AI, Python and JavaScript experience to join on a contract basis. As a Software Developer - AI, you will focus on the development and delivery of Gen AI driven software solutions, working within a dynamic team to enhance our digital products. You will be responsible for writing clean, efficient, and maintainable code, primarily in Python and JavaScript, while contributing to the successful deployment of Gen AI technologies that directly impact the company's customer experience (CX) vision. You will collaborate closely with other software engineers, product teams, and AI specialists to develop LLM AI-powered applications, ensuring their scalability, security, observability and performance.
        Day rate: £500 - £800 (inside IR35) Duration: 6 - 12 months - Start: ASAP - Hybrid: 3 days on site per week - My client is looking for a Software Developer with AI, Python and JavaScript experience to join on a contract basis. As a Software Developer - AI, you will focus on the development and delivery of Gen AI driven software solutions, working within a dynamic team to enhance our digital products. You will be responsible for writing clean, efficient, and maintainable code, primarily in Python and JavaScript, while contributing to the successful deployment of Gen AI technologies that directly impact the company's customer experience (CX) vision. You will collaborate closely with other software engineers, product teams, and AI specialists to develop LLM AI-powered applications, ensuring their scalability, security, observability and performance.
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        Support an API-FIRST Analytics business strategy to design and build SaaS and PaaS solutions, including analytics data solutions, quantitative models, risk analytics and customized reporting tools, and other sophisticated analytical tools. * Experience leading/designing/delivering API service-based product solutions
        Support an API-FIRST Analytics business strategy to design and build SaaS and PaaS solutions, including analytics data solutions, quantitative models, risk analytics and customized reporting tools, and other sophisticated analytical tools. * Experience leading/designing/delivering API service-based product solutions
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        Senior Data Architect

        Cambridge University Press & Assessment
        CB2, Cambridge, CB2 8BS
        From £70,400 to £94,100 per annum
        Job Title:Senior Data Architect - Salary:£70,400 - £94,100 - Location:Cambridge/Hybrid with office attendance for an average of 2 days a week - Contract:Permanent - Shape the future of data and AI at Cambridge University Press & Assessment - We are Cambridge University Press & Assessment, a world-leading academic publisher and assessment organisation and a proud part of the University of Cambridge. About the role - As a SeniorData Architect, you will play a pivotal role in delivering a coherent and scalable data framework aligned with our enterprise data strategy. You'll advance key architectural principles such as data mesh, data products, and data contracts, while enabling the strategic use of Artificial Intelligence (AI) and Generative AI (GenAI) across the organisation. You'll beresponsible for promoting the data strategy, securing stakeholder buy-in, and defining
        Job Title:Senior Data Architect - Salary:£70,400 - £94,100 - Location:Cambridge/Hybrid with office attendance for an average of 2 days a week - Contract:Permanent - Shape the future of data and AI at Cambridge University Press & Assessment - We are Cambridge University Press & Assessment, a world-leading academic publisher and assessment organisation and a proud part of the University of Cambridge. About the role - As a SeniorData Architect, you will play a pivotal role in delivering a coherent and scalable data framework aligned with our enterprise data strategy. You'll advance key architectural principles such as data mesh, data products, and data contracts, while enabling the strategic use of Artificial Intelligence (AI) and Generative AI (GenAI) across the organisation. You'll beresponsible for promoting the data strategy, securing stakeholder buy-in, and defining
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        NEWFEATURED
        Join Us as a Software Development Engineer in Test (SDET)! Overview - We are looking for a Software Development Engineer in Test (SDET) or automation tester who comes from a Java Software Development background. The role is to assist in the development of the new Index platform for the FTSE-Russell Index business of the London Stock Exchange Group (LSEG). The Index Platform team performs the calculation, maintenance and distribution of Index products. You will be working on innovative technologies with a team of engineers to implement solutions which support the strategic growth of the Index business. You will be involved in the development of complex test tools and solutions as well as new test frameworks, starting from a blank slate in some cases, to help ensure the quality of a greenfield application build.
        Join Us as a Software Development Engineer in Test (SDET)! Overview - We are looking for a Software Development Engineer in Test (SDET) or automation tester who comes from a Java Software Development background. The role is to assist in the development of the new Index platform for the FTSE-Russell Index business of the London Stock Exchange Group (LSEG). The Index Platform team performs the calculation, maintenance and distribution of Index products. You will be working on innovative technologies with a team of engineers to implement solutions which support the strategic growth of the Index business. You will be involved in the development of complex test tools and solutions as well as new test frameworks, starting from a blank slate in some cases, to help ensure the quality of a greenfield application build.
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        3 Days of work in the office - Job Summary * Migrate on-premise services to OCP in AWS. * Update pipelines to use in-house Trident solution. * Upgrade all components from Spring Boot 3.5 to 4. * Creation of new services or data sinks that are single responsibility and publish/consume from Kafka. * Service decommissions. * BAU work. Job Requirements * Java 17, 21 * Junit 5, Cucumber * Spring Boot 3, 4 * Tooling (Gradle, GitHub, Nexus, Artifactory, Sonar, Jacoco) * Kafka * Kubernetes, Helm * Databases (Preferably HBase, PostgreSQL) * Jenkins and CICD * Kafka Streams, Data sinks * OCP * RabbitMQ * Observability (Datadog, Grafana, Logging concepts and traces, Logback) * AWS * NoSQL datastores (Mongo, DynamoDB) * Security (Kerberos, JWT, Hashi Corp Vault, CVEs) * Design principles (Event Driven, testing, migrations, SOA, microservices, APIs)
        3 Days of work in the office - Job Summary * Migrate on-premise services to OCP in AWS. * Update pipelines to use in-house Trident solution. * Upgrade all components from Spring Boot 3.5 to 4. * Creation of new services or data sinks that are single responsibility and publish/consume from Kafka. * Service decommissions. * BAU work. Job Requirements * Java 17, 21 * Junit 5, Cucumber * Spring Boot 3, 4 * Tooling (Gradle, GitHub, Nexus, Artifactory, Sonar, Jacoco) * Kafka * Kubernetes, Helm * Databases (Preferably HBase, PostgreSQL) * Jenkins and CICD * Kafka Streams, Data sinks * OCP * RabbitMQ * Observability (Datadog, Grafana, Logging concepts and traces, Logback) * AWS * NoSQL datastores (Mongo, DynamoDB) * Security (Kerberos, JWT, Hashi Corp Vault, CVEs) * Design principles (Event Driven, testing, migrations, SOA, microservices, APIs)
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        NEW
        MERITUS are working with a large consulting organisation looking for a Senior Java Developer on a project working into a UK Central Government client. You'll play a key role in designing, coding, reviewing, and testing solutions within the Java stack, collaborating with developers, testers, and DevOps engineers. The position also involves working on automated tests, infrastructure updates, and maintaining high-quality standards across all stages of development. The role is remote with monthly visits into the London office on an initial 6 Month contract. * Design, code, review, and unit test applications using the Java stack. * Collaborate with cross-functional teams, including developers, testers, and DevOps engineers. * Support and enhance legacy systems currently in maintenance mode. * Contribute to automated testing (C#) and infrastructure improvements (Docker, Ans
        MERITUS are working with a large consulting organisation looking for a Senior Java Developer on a project working into a UK Central Government client. You'll play a key role in designing, coding, reviewing, and testing solutions within the Java stack, collaborating with developers, testers, and DevOps engineers. The position also involves working on automated tests, infrastructure updates, and maintaining high-quality standards across all stages of development. The role is remote with monthly visits into the London office on an initial 6 Month contract. * Design, code, review, and unit test applications using the Java stack. * Collaborate with cross-functional teams, including developers, testers, and DevOps engineers. * Support and enhance legacy systems currently in maintenance mode. * Contribute to automated testing (C#) and infrastructure improvements (Docker, Ans
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        Howdens are offering an exciting opportunity to take a leading role in our software development function as a Technical Architect. You will drive the technical vision, define architectural strategy, and guide the creation of innovative, scalable solutions that make a real impact on our business - What youll be doing * Technical Leadership: Mentor developers, guide best practices, and resolve complex technical challenges. * Architecture Ownership: Define, evolve, and document system architecture to align with business goals and technical standards. * Solution Design: Deliver secure, scalable solutions that balance speed, cost, and quality. * Standards & Governance: Uphold coding, testing, and security standards across teams. * Innovation: Evaluate new technologies, modernise systems, and reduce technical debt.
        Howdens are offering an exciting opportunity to take a leading role in our software development function as a Technical Architect. You will drive the technical vision, define architectural strategy, and guide the creation of innovative, scalable solutions that make a real impact on our business - What youll be doing * Technical Leadership: Mentor developers, guide best practices, and resolve complex technical challenges. * Architecture Ownership: Define, evolve, and document system architecture to align with business goals and technical standards. * Solution Design: Deliver secure, scalable solutions that balance speed, cost, and quality. * Standards & Governance: Uphold coding, testing, and security standards across teams. * Innovation: Evaluate new technologies, modernise systems, and reduce technical debt.
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        NEW

        Technical Architect

        HOWDENS JOINERY
        Northampton, Northamptonshire
        Competitive
        Howdens are offering an exciting opportunity to take a leading role in our software development function as a Technical Architect. You will drive the technical vision, define architectural strategy, and guide the creation of innovative, scalable solutions that make a real impact on our business - What youll be doing * Technical Leadership: Mentor developers, guide best practices, and resolve complex technical challenges. * Architecture Ownership: Define, evolve, and document system architecture to align with business goals and technical standards. * Solution Design: Deliver secure, scalable solutions that balance speed, cost, and quality. * Standards & Governance: Uphold coding, testing, and security standards across teams. * Innovation: Evaluate new technologies, modernise systems, and reduce technical debt.
        Howdens are offering an exciting opportunity to take a leading role in our software development function as a Technical Architect. You will drive the technical vision, define architectural strategy, and guide the creation of innovative, scalable solutions that make a real impact on our business - What youll be doing * Technical Leadership: Mentor developers, guide best practices, and resolve complex technical challenges. * Architecture Ownership: Define, evolve, and document system architecture to align with business goals and technical standards. * Solution Design: Deliver secure, scalable solutions that balance speed, cost, and quality. * Standards & Governance: Uphold coding, testing, and security standards across teams. * Innovation: Evaluate new technologies, modernise systems, and reduce technical debt.
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        NEW
        we are hiring forTechnical Data Architect - location: Central London - Type : Permanent - Hybrid role (2-3 days from client location) We are seeking a highly skilled TechnicalData Architect- with expertise in Databricks, PySpark, and modern data engineering practices. The ideal candidate will lead the design, development, and optimization of scalable data pipelines, while ensuring data accuracy, consistency, and performance across the enterprise Lakehouse platform. This role requires strong leadership, technical depth, and the ability to collaborate with cross-functional teams. Key Responsibilities - Lead the design, development, and maintenance of scalable, high-performance data pipelines on Databricks. Architect and implement data ingestion, transformation, and integration workflows using PySpark, SQL, and Delta Lake.
        we are hiring forTechnical Data Architect - location: Central London - Type : Permanent - Hybrid role (2-3 days from client location) We are seeking a highly skilled TechnicalData Architect- with expertise in Databricks, PySpark, and modern data engineering practices. The ideal candidate will lead the design, development, and optimization of scalable data pipelines, while ensuring data accuracy, consistency, and performance across the enterprise Lakehouse platform. This role requires strong leadership, technical depth, and the ability to collaborate with cross-functional teams. Key Responsibilities - Lead the design, development, and maintenance of scalable, high-performance data pipelines on Databricks. Architect and implement data ingestion, transformation, and integration workflows using PySpark, SQL, and Delta Lake.
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        NEWFEATURED
        Position: AI Engineer / AI Agent / Backend AI Engineer - Location: Remote - Work Type: Contract - We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems - Why join us? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
        Position: AI Engineer / AI Agent / Backend AI Engineer - Location: Remote - Work Type: Contract - We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems - Why join us? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities - We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
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        NEWFEATURED

        Java Developer - Active SC

        Hays
        London
        £600.0 - £640.0 per day + up to £640 pd (Inside IR35)
        Up to £640 per day (Inside IR35) London / Remote - 6 months - My client is an instantly recognisable consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Lead Java Developer within the public sector * Active Security Clearance (SC) * Java (8/11/17+): Expert-level programming and deep understanding of the language and its core libraries * Spring Boot: Expert in building RESTful APIs and microservices * AWS: Strong experience with core AWS services (EC2, S3, Lambda, IAM, etc.) * Kafka / Messaging Systems: Expertise in building event-driven architectures * SQL: Strong experience with relational databases and query optimization * REST / JSON APIs: Designing, developing, and consuming scalable APIs * Docker: Proficiency in containerizing applications for local and cloud environments
        Up to £640 per day (Inside IR35) London / Remote - 6 months - My client is an instantly recognisable consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Lead Java Developer within the public sector * Active Security Clearance (SC) * Java (8/11/17+): Expert-level programming and deep understanding of the language and its core libraries * Spring Boot: Expert in building RESTful APIs and microservices * AWS: Strong experience with core AWS services (EC2, S3, Lambda, IAM, etc.) * Kafka / Messaging Systems: Expertise in building event-driven architectures * SQL: Strong experience with relational databases and query optimization * REST / JSON APIs: Designing, developing, and consuming scalable APIs * Docker: Proficiency in containerizing applications for local and cloud environments
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        NEW
        Position: Backend Engineer - Location: Remote (UK) Work Type: Contract - Join our team to build the backbone of a global music streaming platform! We're looking for a JAVA Backend Engineer who loves coding, solving problems, and delivering features that reach millions of users. * Build scalable Java & SpringBoot microservices. * Develop APIs and backend tools for engineers across the company. * Use TDD, CI/CD, Docker, Kubernetes, Jenkins, and GCP services. * Work with alternate languages like Python, Scala, Golang, or Node.js for backend tasks. * Collaborate in an Agile environment with cross-functional teams. * Strong backend development skills (Java and microservices). * Experience with microservices, TDD, CI/CD, Docker & Kubernetes, and cloud platforms (GCP preferred). * Familiarity with and one of Python, Golang, Scala or Node.js is a plus.
        Position: Backend Engineer - Location: Remote (UK) Work Type: Contract - Join our team to build the backbone of a global music streaming platform! We're looking for a JAVA Backend Engineer who loves coding, solving problems, and delivering features that reach millions of users. * Build scalable Java & SpringBoot microservices. * Develop APIs and backend tools for engineers across the company. * Use TDD, CI/CD, Docker, Kubernetes, Jenkins, and GCP services. * Work with alternate languages like Python, Scala, Golang, or Node.js for backend tasks. * Collaborate in an Agile environment with cross-functional teams. * Strong backend development skills (Java and microservices). * Experience with microservices, TDD, CI/CD, Docker & Kubernetes, and cloud platforms (GCP preferred). * Familiarity with and one of Python, Golang, Scala or Node.js is a plus.
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        NEWFEATURED

        Software Developer C#

        Platform Recruitment Limited
        Reading, Berkshire
        Unspecified
        Title:Software Developer - Location:Berkshire - Work Model:Hybrid - Were partnering with a European technology company that provides secure connectivity and data solutions across multiple sectors. Theyre looking to bring a Software Developer into their expanding team. Youll work closely with other developers and support staff, helping to develop and support a new C# communications platform. This platform is responsible for the aggregation, transformation, and delivery of critical alarm signals. Key Responsibilities - Create and maintain APIs for platform management -Actively participate in an Agile development team -Conduct testing, verification, and troubleshooting -Provide 3rd-line support to 1st-line support teams -Ensure compliance with industry standards and regulations in software designs -Document design specifications, test procedures, and project updates - Ke
        Title:Software Developer - Location:Berkshire - Work Model:Hybrid - Were partnering with a European technology company that provides secure connectivity and data solutions across multiple sectors. Theyre looking to bring a Software Developer into their expanding team. Youll work closely with other developers and support staff, helping to develop and support a new C# communications platform. This platform is responsible for the aggregation, transformation, and delivery of critical alarm signals. Key Responsibilities - Create and maintain APIs for platform management -Actively participate in an Agile development team -Conduct testing, verification, and troubleshooting -Provide 3rd-line support to 1st-line support teams -Ensure compliance with industry standards and regulations in software designs -Document design specifications, test procedures, and project updates - Ke
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        Lead Backend Developer - Location: London - 1x a month - Salary: Up to £120,000 (D.O.E) + benefits - Fruition Group are partnering with a high-growth Insurtech unicorn that's scaling its engineering function. This is a unique chance to work across both proven, revenue-generating products and greenfield initiatives that are reshaping the future of insurance. It's an ideal role for a driven Lead Engineer who thrives in ambitious environments and wants to make a tangible impact. As a Lead Backend Engineer, you'll take ownership of designing and scaling cloud-native backend systems. You'll work primarily with Python (FastAPI) and play a key role in shaping the architecture of microservices that support millions of users. Beyond hands-on development, you'll provide technical leadership, mentor team members, and influence strategic engineering decisions.
        Lead Backend Developer - Location: London - 1x a month - Salary: Up to £120,000 (D.O.E) + benefits - Fruition Group are partnering with a high-growth Insurtech unicorn that's scaling its engineering function. This is a unique chance to work across both proven, revenue-generating products and greenfield initiatives that are reshaping the future of insurance. It's an ideal role for a driven Lead Engineer who thrives in ambitious environments and wants to make a tangible impact. As a Lead Backend Engineer, you'll take ownership of designing and scaling cloud-native backend systems. You'll work primarily with Python (FastAPI) and play a key role in shaping the architecture of microservices that support millions of users. Beyond hands-on development, you'll provide technical leadership, mentor team members, and influence strategic engineering decisions.
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        We are looking for a motivated and detail-oriented Software Engineer to join our development team. You will have hands-on experience with Java development, Spring framework, relational databases, and a strong desire to grow their technical skills while contributing to Cegeka software solutions. Responsibilities * Design, develop, test, and maintain Java-based applications using the Spring framework. * Write efficient, reliable, and maintainable code that adheres to best practices. * Work with SQL databases (e.g., MySQL, PostgreSQL, Oracle) to design schemas, write queries, and optimise performance. * Collaborate with senior engineers to implement new features and fix bugs. * Participate in code reviews and contribute to improving coding standards. * Assist in troubleshooting, debugging, and performance tuning of applications.
        We are looking for a motivated and detail-oriented Software Engineer to join our development team. You will have hands-on experience with Java development, Spring framework, relational databases, and a strong desire to grow their technical skills while contributing to Cegeka software solutions. Responsibilities * Design, develop, test, and maintain Java-based applications using the Spring framework. * Write efficient, reliable, and maintainable code that adheres to best practices. * Work with SQL databases (e.g., MySQL, PostgreSQL, Oracle) to design schemas, write queries, and optimise performance. * Collaborate with senior engineers to implement new features and fix bugs. * Participate in code reviews and contribute to improving coding standards. * Assist in troubleshooting, debugging, and performance tuning of applications.
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        NEW

        .NET Developer

        IMPACTIVE IT RECRUITMENT LTD
        London
        From £55,000 to £85,000 per annum
        Impactive ITare currently working with a fantastic organisation with big growth targets to hit before the end of the year. We are on the hunt for a AI .NET Developer who will be playing a key role in designing, developing innovate solutions leveraging the use of AI. Core Skills and Experience - Strong commercial experience in .NET development and implementing AI-based applications. - Comfortable using AI and automation frameworks to improve developer productivity. - Experienced in code reviews, quality checks, and pull requests within collaborative projects. - Able to contribute across the full software development lifecycle, from concept and design to delivery and support. - Skilled at translating business requirements into scalable and efficient technical solutions. - Capable of estimating workload and development effort for new builds and enhancements.
        Impactive ITare currently working with a fantastic organisation with big growth targets to hit before the end of the year. We are on the hunt for a AI .NET Developer who will be playing a key role in designing, developing innovate solutions leveraging the use of AI. Core Skills and Experience - Strong commercial experience in .NET development and implementing AI-based applications. - Comfortable using AI and automation frameworks to improve developer productivity. - Experienced in code reviews, quality checks, and pull requests within collaborative projects. - Able to contribute across the full software development lifecycle, from concept and design to delivery and support. - Skilled at translating business requirements into scalable and efficient technical solutions. - Capable of estimating workload and development effort for new builds and enhancements.
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        NEW
        At Cegeka, we are dedicated to delivering high-quality end-to-end services to our clients. We pride ourselves on maintaining excellent customer satisfaction through our innovative solutions and dedicated team. We are seeking a motivated and skilled IT Business Analyst to join ourteam. The main responsibilities of the role will be business analysis, process improvement, solution definition/design and requirement management. * Elicit and document business requirements through close collaboration with stakeholders * Analyse current processes and identify opportunities for improvement * Evaluate impact of changes in relevant legislation, standards, regulation and industry trends * Design solutions which could comprise both system functional changes and/or improvements to business processes, policies or procedures
        At Cegeka, we are dedicated to delivering high-quality end-to-end services to our clients. We pride ourselves on maintaining excellent customer satisfaction through our innovative solutions and dedicated team. We are seeking a motivated and skilled IT Business Analyst to join ourteam. The main responsibilities of the role will be business analysis, process improvement, solution definition/design and requirement management. * Elicit and document business requirements through close collaboration with stakeholders * Analyse current processes and identify opportunities for improvement * Evaluate impact of changes in relevant legislation, standards, regulation and industry trends * Design solutions which could comprise both system functional changes and/or improvements to business processes, policies or procedures
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        NEW
        About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
        About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
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        NEW
        At eBay, we're more than a global ecommerce leader were changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. Were committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts. Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work every day. We're in this together, sustaining the future of our customers, our company, and our planet. Join a team of passionate thinkers, innovators, and dreamers and help us connect people and build communities to create economic opportunity for all. Join eBay as a Senior Product Manager for Managed Shipping and help shape the future of global e-commerce. You'll develop and expand shipping solutions that streamline selling, improve saf
        At eBay, we're more than a global ecommerce leader were changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. Were committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts. Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work every day. We're in this together, sustaining the future of our customers, our company, and our planet. Join a team of passionate thinkers, innovators, and dreamers and help us connect people and build communities to create economic opportunity for all. Join eBay as a Senior Product Manager for Managed Shipping and help shape the future of global e-commerce. You'll develop and expand shipping solutions that streamline selling, improve saf
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        NEW
        As the Ad Tech and Analytics Manager, you will strategically implement and optimise ad tech solutions, ensuring robust data management and impactful analytics. As a key contributor, you will drive advanced solutions that elevate L'Oréal's digital media performance, ensure robust data governance and compliance, empower data-driven decisions, foster collaboration, and integrate innovative technologies like Generative AI to maintain L'Oréal's leading position in the digital landscape. MEDIA TECH MANAGEMENT & OPTIMISATION * Oversee and optimise APIs (e.g., CAPI, eAPI's) for data collection and integration. * Manage tracking pixels and tags, ensuring data accuracy and reliability across digital platforms. * Manage and utilise essential tools for brand safety, media sustainability, taxonomy, reporting, and analytics, collaborating with media agencies.
        As the Ad Tech and Analytics Manager, you will strategically implement and optimise ad tech solutions, ensuring robust data management and impactful analytics. As a key contributor, you will drive advanced solutions that elevate L'Oréal's digital media performance, ensure robust data governance and compliance, empower data-driven decisions, foster collaboration, and integrate innovative technologies like Generative AI to maintain L'Oréal's leading position in the digital landscape. MEDIA TECH MANAGEMENT & OPTIMISATION * Oversee and optimise APIs (e.g., CAPI, eAPI's) for data collection and integration. * Manage tracking pixels and tags, ensuring data accuracy and reliability across digital platforms. * Manage and utilise essential tools for brand safety, media sustainability, taxonomy, reporting, and analytics, collaborating with media agencies.
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        NEW
        Description and requirements - Skanska, one of the worlds leading project development and construction groups, is an - inclusive and responsible business that is helping to build a better society. We are looking for a GIS Senior Developer to join our HS2 main works team in London . * Lead the design, development, and delivery of solutions across Azure and SaaS platforms. * Act as the go-to expert for integration architecture, ensuring compliance with best practice and IT policies. * Collaborate with architects, support teams, and third-party vendors to deliver robust, scalable integrations. * Troubleshoot issues, oversee production incidents, and drive proactive improvements. * Produce and maintain technical documentation, including design and integration artefacts. * Ensure all work aligns with security, governance, and enterprise architecture standards.
        Description and requirements - Skanska, one of the worlds leading project development and construction groups, is an - inclusive and responsible business that is helping to build a better society. We are looking for a GIS Senior Developer to join our HS2 main works team in London . * Lead the design, development, and delivery of solutions across Azure and SaaS platforms. * Act as the go-to expert for integration architecture, ensuring compliance with best practice and IT policies. * Collaborate with architects, support teams, and third-party vendors to deliver robust, scalable integrations. * Troubleshoot issues, oversee production incidents, and drive proactive improvements. * Produce and maintain technical documentation, including design and integration artefacts. * Ensure all work aligns with security, governance, and enterprise architecture standards.
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        NEW

        Full Stack .NET Developer

        Ceox Services Ltd
        GU4, Guildford
        Competitive salary dependant on experience
        We are looking for an experienced Full Stack .NET Developer to join our team delivering Agile projects using the latest Microsoft technology for our clients. Our rapidly growing team works mainly with Public Sector organisations to deliver solutions and applications that drive value and engage customers using Power Platform and the Microsoft technology stack. The primary focus of the role would be working with our team to deliver solutions for our customers utilising Microsoft Technologies, with a focus on ASP.NET and Azure. As a Senior Developer, you will be expected to take the Technical Lead role on some projects and work as part of a team on other projects. You will also help design and advocate for internal development standards. We are privately owned with financial stability and a plan for organic growth.
        We are looking for an experienced Full Stack .NET Developer to join our team delivering Agile projects using the latest Microsoft technology for our clients. Our rapidly growing team works mainly with Public Sector organisations to deliver solutions and applications that drive value and engage customers using Power Platform and the Microsoft technology stack. The primary focus of the role would be working with our team to deliver solutions for our customers utilising Microsoft Technologies, with a focus on ASP.NET and Azure. As a Senior Developer, you will be expected to take the Technical Lead role on some projects and work as part of a team on other projects. You will also help design and advocate for internal development standards. We are privately owned with financial stability and a plan for organic growth.
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        NEW

        Database Engineer

        Grundon
        Wallingford, Oxfordshire, OX10 6LX
        up to 40k DOE
        Are you looking for an exciting opportunity where your skills will shine and your ideas will shape the future? At Grundon, we are on the lookout for a dynamic, passionate, and driven individual to join our Data team based in Benson. This is more than just a job; it’s an opportunity to join a company that is here to show the world that there is more to waste than it seems. Here your contributions will make a real difference as we work towards our shared vision to unlock the potential of waste whilst leaving a better planet for future generations. Reporting into the Head of IT/ Finance Director you will play a key role in driving our mission forward managing and optimising the organisation’s data warehouse to ensure high performance, reliability, and accessibility. This role involves designing, developing, and maintaining scalable data solutions that support business ..
        Are you looking for an exciting opportunity where your skills will shine and your ideas will shape the future? At Grundon, we are on the lookout for a dynamic, passionate, and driven individual to join our Data team based in Benson. This is more than just a job; it’s an opportunity to join a company that is here to show the world that there is more to waste than it seems. Here your contributions will make a real difference as we work towards our shared vision to unlock the potential of waste whilst leaving a better planet for future generations. Reporting into the Head of IT/ Finance Director you will play a key role in driving our mission forward managing and optimising the organisation’s data warehouse to ensure high performance, reliability, and accessibility. This role involves designing, developing, and maintaining scalable data solutions that support business ..
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        NEWFEATURED
        Description - iHCM Principal Product Manager Talent Management - The Role - The Principal Product Manager, Talent Management, will lead the strategy, design, and execution of talent-focused capabilities across our mid-market (HCM) products and act as a thought leader in this space for the broader ESI organisation. This role is central to delivering innovative, practical, and intuitive solutions that help mid-sized businesses attract, grow, and retain talent while staying agile in a changing workforce landscape. In this role the successful candidate will demonstrate a deep understanding of the needs of end-users and customers in the Talent Management domain; they will have knowledge of the market, the competitive landscape and relevant industry and technology trends. The Domain - This is a strategic role focused on high-impact product capabilities such as performance m
        Description - iHCM Principal Product Manager Talent Management - The Role - The Principal Product Manager, Talent Management, will lead the strategy, design, and execution of talent-focused capabilities across our mid-market (HCM) products and act as a thought leader in this space for the broader ESI organisation. This role is central to delivering innovative, practical, and intuitive solutions that help mid-sized businesses attract, grow, and retain talent while staying agile in a changing workforce landscape. In this role the successful candidate will demonstrate a deep understanding of the needs of end-users and customers in the Talent Management domain; they will have knowledge of the market, the competitive landscape and relevant industry and technology trends. The Domain - This is a strategic role focused on high-impact product capabilities such as performance m
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        NEW
        Our Purpose - Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary - Overview - We are looking for a software engineer to join an award winning team with a proven track record of combining data science techniques with an intimate knowledge of payments data to aid Financial Institutions in their fight against money laundering and fraud. Headquartered in The City of London, we craft bespoke services that help our clien
        Our Purpose - Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary - Overview - We are looking for a software engineer to join an award winning team with a proven track record of combining data science techniques with an intimate knowledge of payments data to aid Financial Institutions in their fight against money laundering and fraud. Headquartered in The City of London, we craft bespoke services that help our clien
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        NEW

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        What is the average salary for API in Hertfordshire?

        Average salary per year
        £62,499

        The average salary for a API in Hertfordshire is £62,499. API in Hertfordshire salaries range from £47,499 to £67,499.

        Frequently Asked Questions

        How many API jobs are there in Hertfordshire?
        There are 104 API jobs within 20 miles of Hertfordshire available on CWJobs right now.

        What other similar jobs are there to API jobs in Hertfordshire?
        As well as API jobs in Hertfordshire, you can find Cyber Security, Data Migration, IT, amongst many others.