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67 Permanent API jobs in Hertfordshire + 20 miles
192 exact matches jobs are outside your preferred location
Accueil - Nos offres d'emploi - Nous recherchons un - Retour la liste des offres - Contrat - CDI (Permanent) Horaires - Temps plein - Localisation - Londres, Angleterre, Royaume-Uni - Niveau d'études - Niveau BAC+2/3 - Marque - Métier - Expertise Financire et Technique Transformation numérique & data - Mise jour le 04.08.2025 - The Role - BNP Paribas Real Estate is a one-of-a-kind real estate specialist business, with multiple business lines providing residential and commercial property sales; facilities and property management; and rural estate advice and management. The use of data-driven insights and technology is key in the real estate sector. To continue our competitive approach in this market, we have embarked on an exciting programme of activity which involves identifying and enhancing the possibilities with our data - transforming and evolving BNP Paribas Real
Accueil - Nos offres d'emploi - Nous recherchons un - Retour la liste des offres - Contrat - CDI (Permanent) Horaires - Temps plein - Localisation - Londres, Angleterre, Royaume-Uni - Niveau d'études - Niveau BAC+2/3 - Marque - Métier - Expertise Financire et Technique Transformation numérique & data - Mise jour le 04.08.2025 - The Role - BNP Paribas Real Estate is a one-of-a-kind real estate specialist business, with multiple business lines providing residential and commercial property sales; facilities and property management; and rural estate advice and management. The use of data-driven insights and technology is key in the real estate sector. To continue our competitive approach in this market, we have embarked on an exciting programme of activity which involves identifying and enhancing the possibilities with our data - transforming and evolving BNP Paribas Real
2025-08-15T00:00:00.000Z - London - full - Lyst is a global Fashion Tech company and premium shopping app, founded in London in 2010 and catering to over 200M shoppers per year. We offer our customers the largest assortment of premium & luxury fashion items & products in one place, via an assortment of 8.5M+ items from over 17,000 of the world's leading brands. We are a scale-up business with a current team size of c.150 people in London, combining an agile mentality with a proven business model and over a decade of experience. This provides a balance between foundations and structure, and autonomy and pace. At Lyst we obsess over the customer, providing a search & discovery experience which offers inspiration, fulfilment, and personalisation. We believe that fashion is amazing but shopping for fashion often isn't, and use our technology, data and creativity to bring
2025-08-15T00:00:00.000Z - London - full - Lyst is a global Fashion Tech company and premium shopping app, founded in London in 2010 and catering to over 200M shoppers per year. We offer our customers the largest assortment of premium & luxury fashion items & products in one place, via an assortment of 8.5M+ items from over 17,000 of the world's leading brands. We are a scale-up business with a current team size of c.150 people in London, combining an agile mentality with a proven business model and over a decade of experience. This provides a balance between foundations and structure, and autonomy and pace. At Lyst we obsess over the customer, providing a search & discovery experience which offers inspiration, fulfilment, and personalisation. We believe that fashion is amazing but shopping for fashion often isn't, and use our technology, data and creativity to bring
Job Description - Role - Principal Consultant ( Oracle Fusion cloud Planning) Technology - Oracle Cloud - Location - UK - Business Unit - ORC - Compensation - Competitive (including bonus) We are seeking seasoned Functional Lead to drive the implementation of Oracle Fusion Cloud Planning modules including Supply Planning and Demand Planning, GOP and S&OP. The ideal candidate will have deep domain expertise in the CPG industry, strong functional knowledge of Oracle Cloud Planning, and experience leading multi-country rollouts in Europe. Responsibilities. * Solution Design & Implementation * Lead the design and configuration of Oracle Fusion SCM modules: Demand Planning, Supply Planning, GOP, S&OP. * Conduct fit-gap analysis and document functional specifications (BRD, FDD, CWB). * Ensure alignment with CPG-specific business processes. * Stakeholder Engagement
Job Description - Role - Principal Consultant ( Oracle Fusion cloud Planning) Technology - Oracle Cloud - Location - UK - Business Unit - ORC - Compensation - Competitive (including bonus) We are seeking seasoned Functional Lead to drive the implementation of Oracle Fusion Cloud Planning modules including Supply Planning and Demand Planning, GOP and S&OP. The ideal candidate will have deep domain expertise in the CPG industry, strong functional knowledge of Oracle Cloud Planning, and experience leading multi-country rollouts in Europe. Responsibilities. * Solution Design & Implementation * Lead the design and configuration of Oracle Fusion SCM modules: Demand Planning, Supply Planning, GOP, S&OP. * Conduct fit-gap analysis and document functional specifications (BRD, FDD, CWB). * Ensure alignment with CPG-specific business processes. * Stakeholder Engagement
Amex GBT is a place where colleagues find inspiration in travel as a force for good and through their work can make an impact on our industry. Were here to help our colleagues achieve success and offer an inclusive and collaborative culture where your voice is valued. As a member of Amex GBTs Data Enablement Engineering group, you will tackle the organizations most sophisticated and impactful challenges using cutting-edge data technologies. Working in an agile development mindset, you will contribute to our cloud-based data platform and make sure it scales dynamically and operates reliably. Internal and external clients will use the products you develop to gain in-depth insights into travel programs, financials, and operations. Every day, data scientists will leverage the platform you build to train and release machine learning models. * Writing code lots of it.
Amex GBT is a place where colleagues find inspiration in travel as a force for good and through their work can make an impact on our industry. Were here to help our colleagues achieve success and offer an inclusive and collaborative culture where your voice is valued. As a member of Amex GBTs Data Enablement Engineering group, you will tackle the organizations most sophisticated and impactful challenges using cutting-edge data technologies. Working in an agile development mindset, you will contribute to our cloud-based data platform and make sure it scales dynamically and operates reliably. Internal and external clients will use the products you develop to gain in-depth insights into travel programs, financials, and operations. Every day, data scientists will leverage the platform you build to train and release machine learning models. * Writing code lots of it.
Job Introduction - Project Manager/Technical Business Analyst Digital Workstream - Salary up to £60,000 per annum dependent on experience - FTC Until 30th April 2026 - London Hybrid - We are seeking an experienced Project Manager / Technical Business Analyst to lead Digital delivery in an Agile framework. Following Sagas recent announcement to partner with Ageas in early 2026, you will guide a cross-disciplinary development team, ensuring that business requirements are effectively translated into actionable deliverables, with timelines driven by the overarching programme. In this hybrid role, you will guide a cross-disciplinary development team, ensuring that business requirements are effectively translated into actionable deliverables, with timelines driven by the overarching programme. While your primary responsibility will be Scrum leadership, you will also serve a
Job Introduction - Project Manager/Technical Business Analyst Digital Workstream - Salary up to £60,000 per annum dependent on experience - FTC Until 30th April 2026 - London Hybrid - We are seeking an experienced Project Manager / Technical Business Analyst to lead Digital delivery in an Agile framework. Following Sagas recent announcement to partner with Ageas in early 2026, you will guide a cross-disciplinary development team, ensuring that business requirements are effectively translated into actionable deliverables, with timelines driven by the overarching programme. In this hybrid role, you will guide a cross-disciplinary development team, ensuring that business requirements are effectively translated into actionable deliverables, with timelines driven by the overarching programme. While your primary responsibility will be Scrum leadership, you will also serve a
At Cadence, we hire and develop leaders and innovators who want to make an impact on the world of technology. Cadence is a pivotal leader in electronic design, building upon more than 30 years of computational software expertise. The company applies its underlying Intelligent System Design strategy to deliver software, hardware and IP that turn design concepts into reality. Cadence customers are the worlds most innovative companies, delivering extraordinary electronic products from chips to boards to systems for the most dynamic market applications including consumer, hyperscale computing, 5G communications, automotive, aerospace industrial and health. Job Title: Lead Software Engineer. Location: London - Reports to: Principal Software Engineer - We are seeking a skilled software engineer with a strong background in C++ to join our team developing high-performance sof
At Cadence, we hire and develop leaders and innovators who want to make an impact on the world of technology. Cadence is a pivotal leader in electronic design, building upon more than 30 years of computational software expertise. The company applies its underlying Intelligent System Design strategy to deliver software, hardware and IP that turn design concepts into reality. Cadence customers are the worlds most innovative companies, delivering extraordinary electronic products from chips to boards to systems for the most dynamic market applications including consumer, hyperscale computing, 5G communications, automotive, aerospace industrial and health. Job Title: Lead Software Engineer. Location: London - Reports to: Principal Software Engineer - We are seeking a skilled software engineer with a strong background in C++ to join our team developing high-performance sof
UK CITIZENSHIP REQUIRED FOR THIS POSITION: Yes - RELOCATION ASSISTANCE: Relocation assistance may be available - CLEARANCE TYPE: UK-Highest Level of Government Clearance - TRAVEL: Yes, 10% of the Time - Salary: £77,400 - £116,000 - Define Possible at Northrop Grumman UK - At Northrop Grumman UK, our mission is to solve the most complex challenges by shaping the technology and solutions of tomorrow. We call it Defining Possible. This mind-set goes beyond our customer solutions; its the foundation for your career development and the impact we have within the community. So, whats your possible? This is more than just a job; its a mission. We are seeking an experienced Elasticsearch Platforms Engineer to join our Data Platforms Infrastructure team. This role is pivotal in supporting and maintaining our Elastic Cloud Enterprise (ECE) environment, designing and deploying El
UK CITIZENSHIP REQUIRED FOR THIS POSITION: Yes - RELOCATION ASSISTANCE: Relocation assistance may be available - CLEARANCE TYPE: UK-Highest Level of Government Clearance - TRAVEL: Yes, 10% of the Time - Salary: £77,400 - £116,000 - Define Possible at Northrop Grumman UK - At Northrop Grumman UK, our mission is to solve the most complex challenges by shaping the technology and solutions of tomorrow. We call it Defining Possible. This mind-set goes beyond our customer solutions; its the foundation for your career development and the impact we have within the community. So, whats your possible? This is more than just a job; its a mission. We are seeking an experienced Elasticsearch Platforms Engineer to join our Data Platforms Infrastructure team. This role is pivotal in supporting and maintaining our Elastic Cloud Enterprise (ECE) environment, designing and deploying El
Data Services Team offers a variety of data product with strong focus on engineering including data science, and data analytics to help our business users mainly trading teams to make data-driven decisions and improve their business operations. At Macquarie, our advantage is bringing together diverse people and empowering them to shape all kinds of possibilities. We are a global financial services group operating in 31 markets and with 56 years of unbroken profitability. Youll be part of a friendly and supportive team where everyone - no matter what role - contributes ideas and drives outcomes. What role will you play? As a Data Platform Engineer, you will join our dynamic Engineering team developing cutting-edge data product solutions. You will build and maintain applications ranging from cloud infrastructure automation AWS, APIs, query engines, and orchestration ...
Data Services Team offers a variety of data product with strong focus on engineering including data science, and data analytics to help our business users mainly trading teams to make data-driven decisions and improve their business operations. At Macquarie, our advantage is bringing together diverse people and empowering them to shape all kinds of possibilities. We are a global financial services group operating in 31 markets and with 56 years of unbroken profitability. Youll be part of a friendly and supportive team where everyone - no matter what role - contributes ideas and drives outcomes. What role will you play? As a Data Platform Engineer, you will join our dynamic Engineering team developing cutting-edge data product solutions. You will build and maintain applications ranging from cloud infrastructure automation AWS, APIs, query engines, and orchestration ...
Why work for us? A career at Janus Henderson is more than a job, its about investing in a brighter future together. Our Mission at Janus Henderson is to help clients define and achieve superior financial outcomes through differentiated insights, disciplined investments, and world-class service. We will do this by protecting and growing our core business, amplifying our strengths and diversifying where we have the right. Clients Come First - Always | Execution Supersedes Intention | Together We Win | Diversity Improves Results | Truth Builds Trust - If our mission, values, and purpose align with your own, we would love to hear from you! Your opportunity - As Application Developer, you will be responsible for defining and developing business and systems solutions as well as leading ongoing support for existing ones.
Why work for us? A career at Janus Henderson is more than a job, its about investing in a brighter future together. Our Mission at Janus Henderson is to help clients define and achieve superior financial outcomes through differentiated insights, disciplined investments, and world-class service. We will do this by protecting and growing our core business, amplifying our strengths and diversifying where we have the right. Clients Come First - Always | Execution Supersedes Intention | Together We Win | Diversity Improves Results | Truth Builds Trust - If our mission, values, and purpose align with your own, we would love to hear from you! Your opportunity - As Application Developer, you will be responsible for defining and developing business and systems solutions as well as leading ongoing support for existing ones.
About The Role - Purpose - Reporting to the Head of Data Insight & Analytics, this role will support with the development and progression of 7IMs business intelligence and insight capability. Sitting within the Data & Analytics team, this role will directly support 7IMs Transformation function through building dashboards, insight tools and supporting key stakeholders, including the Chief Transformation Officer and the Transformation Leadership Group, with data-driven decision making. The role would suit an ambitious and driven junior individual who is looking for an opportunity to advance their understanding of data, working closely with business leaders to generate meaningful insight. Responsibilities * Over time, act as the subject matter expert (SME) for data analytics to 7IMs Transformation function.
About The Role - Purpose - Reporting to the Head of Data Insight & Analytics, this role will support with the development and progression of 7IMs business intelligence and insight capability. Sitting within the Data & Analytics team, this role will directly support 7IMs Transformation function through building dashboards, insight tools and supporting key stakeholders, including the Chief Transformation Officer and the Transformation Leadership Group, with data-driven decision making. The role would suit an ambitious and driven junior individual who is looking for an opportunity to advance their understanding of data, working closely with business leaders to generate meaningful insight. Responsibilities * Over time, act as the subject matter expert (SME) for data analytics to 7IMs Transformation function.
Built on meritocracy, our unique company culture rewards self-starters and those who are committed to doing what is best for our customers. Location: Hybrid - London - Package: Negotiable + Benefits - We are seeking a skilled and motivated Server-Side Developer to work on our Platform. It is a custom-built online quote, bind and formal documentation issuance platform, that also offers a range of analytics to assist with underwriting, portfolio analysis and product performance. You will be working on improving and maintaining our existing platform, however their will also be the opportunity to support work on our modernisation initiative; to rebuild the platform with a new microservices architecture. * Design, develop, and maintain efficient and scalable server-side applications and services. * Write clean, well-documented, and maintainable code using industry best pra
Built on meritocracy, our unique company culture rewards self-starters and those who are committed to doing what is best for our customers. Location: Hybrid - London - Package: Negotiable + Benefits - We are seeking a skilled and motivated Server-Side Developer to work on our Platform. It is a custom-built online quote, bind and formal documentation issuance platform, that also offers a range of analytics to assist with underwriting, portfolio analysis and product performance. You will be working on improving and maintaining our existing platform, however their will also be the opportunity to support work on our modernisation initiative; to rebuild the platform with a new microservices architecture. * Design, develop, and maintain efficient and scalable server-side applications and services. * Write clean, well-documented, and maintainable code using industry best pra
Software Engineer in Test at Red Badger, London/Remote, 6 Months+, £Competitive Rate (Outside IR35)
Software Engineer in Test at Red Badger, London/Remote, 6 Months+, £Competitive Rate (Outside IR35)
Red Badger
London
Competitive
1. Ideal start date Monday 1st September - 2. New platform build for blue-chip client Financial services client - 3. 6 months + 4. Outside IR35 - 5. £Competitive day rate - 6. 2 days in person working / week. 7. We're looking for high proficiency in Automation testing and designing and building a full suite of platform tests. 8. Immediate Interviews - Senior Software Engineer in Test (SET) The Role - We are looking for a Senior Software Engineer in Test (SET) to join Red Badger's high-performing engineering teams. In this role, you'll define and drive quality strategy for platform and infrastructure-level products from container orchestration and microservices to observability tooling and CI/CD pipelines. This is a hands-on engineering position within cross-functional teams where quality is everyone's responsibility but you'll lead the way in making it systematic, sca
1. Ideal start date Monday 1st September - 2. New platform build for blue-chip client Financial services client - 3. 6 months + 4. Outside IR35 - 5. £Competitive day rate - 6. 2 days in person working / week. 7. We're looking for high proficiency in Automation testing and designing and building a full suite of platform tests. 8. Immediate Interviews - Senior Software Engineer in Test (SET) The Role - We are looking for a Senior Software Engineer in Test (SET) to join Red Badger's high-performing engineering teams. In this role, you'll define and drive quality strategy for platform and infrastructure-level products from container orchestration and microservices to observability tooling and CI/CD pipelines. This is a hands-on engineering position within cross-functional teams where quality is everyone's responsibility but you'll lead the way in making it systematic, sca
Participate in the evolution and development of the REST API. * .NET, ASP.NET Core Web API
Participate in the evolution and development of the REST API. * .NET, ASP.NET Core Web API
Experience in consuming a RESTful API.
Experience in consuming a RESTful API.
Experience in providing integration solutions with SAP BTP capabilities - Integration Suite, API Management, Event Mesh, open connectors etc.
Experience in providing integration solutions with SAP BTP capabilities - Integration Suite, API Management, Event Mesh, open connectors etc.
AI-driven search to enable discoverability - leveraging the changing nature of SEO, and the impact of the change in mechanism away from index-based search to structured data/API-first web models and how AI and search agents (like ChatGPT or Perplexity) change how users find content
AI-driven search to enable discoverability - leveraging the changing nature of SEO, and the impact of the change in mechanism away from index-based search to structured data/API-first web models and how AI and search agents (like ChatGPT or Perplexity) change how users find content
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Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
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Ability to learn and speak to eBays API, feeds, and other pathways for onboarding
Ability to learn and speak to eBays API, feeds, and other pathways for onboarding
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The candidate will hold specialization in designing web applications, middleware/API layer and AWS.
The candidate will hold specialization in designing web applications, middleware/API layer and AWS.
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Data exchange and processing tools (ETL, ESB, API)
Data exchange and processing tools (ETL, ESB, API)
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Security Architecture Secure Design Team - Role: Manager Principal Security Architect: Secure Design (Individual Contributor) Grade: GG14 - The Security Architecture Design team is responsible for developing Security Architecture patterns, developing security controls needed for new technology, promoting the use of the architectural patterns into development projects, leading the Security Architecture Design Forum, Evaluating architectural security risks in existing systems, consulting with system development teams and architects on building security into their design. This key task of this role is accelerating the delivery of secure design artefacts and leading secure design interventions - by adding capacity and capability to the team. Reports to: Senior Manager Secure Design - Key Relationships * Business Aligned Principal Security Architects * CyberSecurity Engine
Security Architecture Secure Design Team - Role: Manager Principal Security Architect: Secure Design (Individual Contributor) Grade: GG14 - The Security Architecture Design team is responsible for developing Security Architecture patterns, developing security controls needed for new technology, promoting the use of the architectural patterns into development projects, leading the Security Architecture Design Forum, Evaluating architectural security risks in existing systems, consulting with system development teams and architects on building security into their design. This key task of this role is accelerating the delivery of secure design artefacts and leading secure design interventions - by adding capacity and capability to the team. Reports to: Senior Manager Secure Design - Key Relationships * Business Aligned Principal Security Architects * CyberSecurity Engine
LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.LSEG is headquartered in the United Kingdom, with significant ...
LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.LSEG is headquartered in the United Kingdom, with significant ...
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API calls, metadata and orchestrating principles
API calls, metadata and orchestrating principles
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Experience with AWS, Kubernetes, Service Mesh, and API Security (including authentication and authorization).
Experience with AWS, Kubernetes, Service Mesh, and API Security (including authentication and authorization).
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Due to continued success, they are looking to grow one of their key software engineering teams working on some of their most successful SaaS products. The Senior C# Software Engineer will join an established team developing business logic for Windows based products. Key experience * Extensive commercial experience in C# Windows programming * Multithreading / TPL * XML * SQL * Version control * Unit testing Experience in any of the following areas would be advantageous but is not a prerequisite * WIX installers * Windows services eg Active Directory, Exchange etc * Client-server architecture development * M365 APIs If you are seeking a role of this nature please get in touch for more information. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.
Due to continued success, they are looking to grow one of their key software engineering teams working on some of their most successful SaaS products. The Senior C# Software Engineer will join an established team developing business logic for Windows based products. Key experience * Extensive commercial experience in C# Windows programming * Multithreading / TPL * XML * SQL * Version control * Unit testing Experience in any of the following areas would be advantageous but is not a prerequisite * WIX installers * Windows services eg Active Directory, Exchange etc * Client-server architecture development * M365 APIs If you are seeking a role of this nature please get in touch for more information. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.
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