Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Filters
Locations
Salaries
Date posted
Type of Company
Job types
1 Contract API job in Portsmouth + 20 miles
Experience developing API and UI
Experience developing API and UI
NEW
17 exact matches jobs are outside your preferred location
)
Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
Strong knowledge of the API/integration lifecycle, including design, deployment, and enhancement. * Expertise in RESTful & SOAP API design, APIM policy, and transformations. * Skilled in API/Integration security protocols & best practices. * Practical experience with Postman, API monitoring, and documentation tools. * Knowledge of Open API Specification, WSDL, SOAP, XSLT. * Application Insight proficiency in .NET and .NET Core (Web, API) and working knowledge of VS Code with Azure.
NEW
Strong experience with RESTful API development in microservice environments
Strong experience with RESTful API development in microservice environments
NEW
Expert-level knowledge of IAM, network security, encryption, API and application security, container security, and SIEM strategies.
Expert-level knowledge of IAM, network security, encryption, API and application security, container security, and SIEM strategies.
NEW
)
Hybrid Python Developer – 9-12 Month Contract (Outside IR35)
Hybrid Python Developer – 9-12 Month Contract (Outside IR35)
Halian Technology Limited
RG1, Reading
From £375 to £450 per day
HybridPython Developer 9-12 Month Contract (Outside IR35) * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: £375-£450 per day (Outside IR35) Exciting Projects: Work on innovative digital solutions in a start-up environment. Flexible Working: Enjoy a hybrid role with one day a week in London. Collaborative Culture: Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Insurance company looking for experienced Python Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up backed by a major insurer and specialising in pay-as-you-go car insurance growing quicklywith over a million customers.
HybridPython Developer 9-12 Month Contract (Outside IR35) * Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: £375-£450 per day (Outside IR35) Exciting Projects: Work on innovative digital solutions in a start-up environment. Flexible Working: Enjoy a hybrid role with one day a week in London. Collaborative Culture: Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Insurance company looking for experienced Python Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up backed by a major insurer and specialising in pay-as-you-go car insurance growing quicklywith over a million customers.
NEW
)
Application Security (secure coding, API security, SAST/DAST, WAF integration).
Application Security (secure coding, API security, SAST/DAST, WAF integration).
NEW
We are seeking a skilled SAP Data Migration Specialist to join our team. This contract role sits inside IR35. Duration 6 months - Summary - The successful candidate will have experience in S4 Hana Greenfield data migration and multi LOBs such as Finance, Procurement, Manufacturing and Projects. This role requires meticulous attention to detail, a strong ability to work independently while supporting the team, and effective communications skills for collaboration with Business Users. Key Tasks * Develop and optimize SQL scripts for data extraction, transformation, loading (ETL). * Write robust, efficient, and scalable SQL code for data manipulation, reporting, and analytics across various platforms * Proficiency in writing complex SQL queries, stored procedures, and database triggers * Experienced S/4HANA Public cloud Data Migration consultant covering P2P, OTC, Financ
We are seeking a skilled SAP Data Migration Specialist to join our team. This contract role sits inside IR35. Duration 6 months - Summary - The successful candidate will have experience in S4 Hana Greenfield data migration and multi LOBs such as Finance, Procurement, Manufacturing and Projects. This role requires meticulous attention to detail, a strong ability to work independently while supporting the team, and effective communications skills for collaboration with Business Users. Key Tasks * Develop and optimize SQL scripts for data extraction, transformation, loading (ETL). * Write robust, efficient, and scalable SQL code for data manipulation, reporting, and analytics across various platforms * Proficiency in writing complex SQL queries, stored procedures, and database triggers * Experienced S/4HANA Public cloud Data Migration consultant covering P2P, OTC, Financ
Company Description - Founded by experienced entrepreneurs and engineers in 2016, Pismo is a technology company that provides a comprehensive processing platform for banking, card issuing and financial market infrastructure and helps customers innovate and build the next generation of banking and payment solutions. Pismo joined Visa in 2024. Leveraging Visas solutions, our core platform, and an expanding suite of capabilities, Pismo addresses the technological challenges that large banks, marketplaces, and fintech companies face in migrating from legacy systems to more advanced technology in the market. Pismos cloud-based platform empowers firms to build and launch financial products rapidly, scaling as they grow to have a broader audience while keeping high security and availability standards. Pismos 500+ employees are located in more than 10 countries around the wor
Company Description - Founded by experienced entrepreneurs and engineers in 2016, Pismo is a technology company that provides a comprehensive processing platform for banking, card issuing and financial market infrastructure and helps customers innovate and build the next generation of banking and payment solutions. Pismo joined Visa in 2024. Leveraging Visas solutions, our core platform, and an expanding suite of capabilities, Pismo addresses the technological challenges that large banks, marketplaces, and fintech companies face in migrating from legacy systems to more advanced technology in the market. Pismos cloud-based platform empowers firms to build and launch financial products rapidly, scaling as they grow to have a broader audience while keeping high security and availability standards. Pismos 500+ employees are located in more than 10 countries around the wor
)
Knowledge of API integration for interaction on the React app
Knowledge of API integration for interaction on the React app
NEW
)
A Senior ServiceNow Developer is sought by our client to work with their team to deliver continuous improvement and development of the Roadmap for end users. The existing team is a mixture of their own resources and 3rd party suppliers. You will be a highly experienced ServiceNow consultant, with a proven track record in ServiceNow development, including certification and experience in implementing different ServiceNow implementation levels and components.. Key Details * INSIDE IR35 * Remote working - Hybrid model * 2 days per week on-site available across various UK locations * 4 months * Must be UK resident * Must be able to work without sponsorship - Essential Criteria * Significant previous experience of working at a Senior ServiceNow level, including Architecture and Developer * Strong solution design experience, including helping influence product roadmaps and s
A Senior ServiceNow Developer is sought by our client to work with their team to deliver continuous improvement and development of the Roadmap for end users. The existing team is a mixture of their own resources and 3rd party suppliers. You will be a highly experienced ServiceNow consultant, with a proven track record in ServiceNow development, including certification and experience in implementing different ServiceNow implementation levels and components.. Key Details * INSIDE IR35 * Remote working - Hybrid model * 2 days per week on-site available across various UK locations * 4 months * Must be UK resident * Must be able to work without sponsorship - Essential Criteria * Significant previous experience of working at a Senior ServiceNow level, including Architecture and Developer * Strong solution design experience, including helping influence product roadmaps and s
NEWFEATURED
Expertise in cloud architecture, microservices, API gateway design, DevOps practices, datapipelines, and enterprise service mesh architecture.
Expertise in cloud architecture, microservices, API gateway design, DevOps practices, datapipelines, and enterprise service mesh architecture.
NEW
You understand and care deeply about the developer journey, from first API call to production deployment.
You understand and care deeply about the developer journey, from first API call to production deployment.
NEW
Collaborate with Ops Tech to manage API use, system performance, and platform scalability. * Working knowledge of JavaScript or Python for API interactions for customizations.
Collaborate with Ops Tech to manage API use, system performance, and platform scalability. * Working knowledge of JavaScript or Python for API interactions for customizations.
NEW
You'll drive key capabilities like multi-tenancy, RBAC, and API experiences to meet the needs of our largest enterprise customers and MSSP partners. As a Lead Product Manager, your primary responsibility will be to own critical enterprise capabilities including multi-tenancy experiences, user access management (RBAC and data access control), API experiences, and foundational account infrastructure. * Strong understanding of enterprise platform requirements, particularly in multi-tenant environments, role-based access control (RBAC), identity and access management (IAM), and API development.
You'll drive key capabilities like multi-tenancy, RBAC, and API experiences to meet the needs of our largest enterprise customers and MSSP partners. As a Lead Product Manager, your primary responsibility will be to own critical enterprise capabilities including multi-tenancy experiences, user access management (RBAC and data access control), API experiences, and foundational account infrastructure. * Strong understanding of enterprise platform requirements, particularly in multi-tenant environments, role-based access control (RBAC), identity and access management (IAM), and API development.
Mentor SREs in developing orchestration pipelines, IaC modules, and secure API integrations.
Mentor SREs in developing orchestration pipelines, IaC modules, and secure API integrations.
Role & Responsibilities - Role Overview - As a Junior Backend Engineer at Grabyo; you will have exposure to the backend APIs and services that power the core of the Grabyo Platform. Some days, you might be part of the team behind key features like building markers in the Live clipping or AI-powered highlights workflows. Other days, you could contribute to evolving our architecture as we advance towards a scalable, microservices-based platform. Java, Spring, Go, Node.js, NoSQL, serverless architectures, microservices, Terraform, AWS SAM, DynamoDB, media processing, Terraform, AWS Lambda these are a few of the state-of-the-art techs you will be working with - To make sure you keep growing your knowledge around tech, we provide you with professional development opportunities like Hackathons, development budget and pair programming days to improve our automated testing cu
Role & Responsibilities - Role Overview - As a Junior Backend Engineer at Grabyo; you will have exposure to the backend APIs and services that power the core of the Grabyo Platform. Some days, you might be part of the team behind key features like building markers in the Live clipping or AI-powered highlights workflows. Other days, you could contribute to evolving our architecture as we advance towards a scalable, microservices-based platform. Java, Spring, Go, Node.js, NoSQL, serverless architectures, microservices, Terraform, AWS SAM, DynamoDB, media processing, Terraform, AWS Lambda these are a few of the state-of-the-art techs you will be working with - To make sure you keep growing your knowledge around tech, we provide you with professional development opportunities like Hackathons, development budget and pair programming days to improve our automated testing cu
NEW
The Senior Backend Engineer is responsible for building and maintaining the server-side systems that power DRESTs luxury mobile game and supporting platform. This role plays a critical part in the performance, reliability, and scalability of our backend architecture, ensuring smooth operation of our live services and enabling feature delivery across the organisation. As a hands-on contributor, the Senior Backend Engineer designs, implements, and optimises backend services, collaborating closely with client, DevOps, and data teams. Reporting to the Lead Backend Engineer, you will also support technical planning and mentor other engineers, helping to shape the future of backend engineering at DREST. What you will be accountable for * Delivering high-quality, maintainable backend code and features on time, aligned with established codebase architectural standards and cov
The Senior Backend Engineer is responsible for building and maintaining the server-side systems that power DRESTs luxury mobile game and supporting platform. This role plays a critical part in the performance, reliability, and scalability of our backend architecture, ensuring smooth operation of our live services and enabling feature delivery across the organisation. As a hands-on contributor, the Senior Backend Engineer designs, implements, and optimises backend services, collaborating closely with client, DevOps, and data teams. Reporting to the Lead Backend Engineer, you will also support technical planning and mentor other engineers, helping to shape the future of backend engineering at DREST. What you will be accountable for * Delivering high-quality, maintainable backend code and features on time, aligned with established codebase architectural standards and cov
NEW
At Convergence Group, weve spent the last 20 years building a business that lasts - powered by resilience, continuous improvement, and a product-led mindset. Now, were scaling fast and shaking up an industry thats ripe for innovation. As a Software Engineer at Convergence, youll play a key role across the entire software development lifecycle, from planning and architecture through delivery and maintenance. Youll help us evolve our connectivity products and internal tools using modern technologies -while contributing to an engineering culture that values clean code, autonomy, and continuous improvement. * Build and maintain high-quality, scalable web applications using C#, JavaScript, web development frameworks and libraries (e.g. React, Next.js, Blazor), and Azure services. * Design intuitive front-end experiences and robust back-end logic with seamless client-server
At Convergence Group, weve spent the last 20 years building a business that lasts - powered by resilience, continuous improvement, and a product-led mindset. Now, were scaling fast and shaking up an industry thats ripe for innovation. As a Software Engineer at Convergence, youll play a key role across the entire software development lifecycle, from planning and architecture through delivery and maintenance. Youll help us evolve our connectivity products and internal tools using modern technologies -while contributing to an engineering culture that values clean code, autonomy, and continuous improvement. * Build and maintain high-quality, scalable web applications using C#, JavaScript, web development frameworks and libraries (e.g. React, Next.js, Blazor), and Azure services. * Design intuitive front-end experiences and robust back-end logic with seamless client-server
These jobs might also interest you
)
We're seeking talented ECMS & Notifications Platform Developers/DevOps Engineers to join a dynamic team supporting critical digital transformation projects. This role will focus on delivering innovative solutions across the Enterprise Content Management System (ECMS) notifications platform, driving forward roadmap priorities and business change. You will be part of a cross-functional team working on a blend of feature development, platform support, and large-scale migration efforts alongside supporting strategic and bulk notifications systems. * Develop and support ECMS features including Message Centre, Onboarding BAU releases, Strategic Events Platform, and onboarding API consumers * Maintain and enhance platform infrastructure including Documentum,
We're seeking talented ECMS & Notifications Platform Developers/DevOps Engineers to join a dynamic team supporting critical digital transformation projects. This role will focus on delivering innovative solutions across the Enterprise Content Management System (ECMS) notifications platform, driving forward roadmap priorities and business change. You will be part of a cross-functional team working on a blend of feature development, platform support, and large-scale migration efforts alongside supporting strategic and bulk notifications systems. * Develop and support ECMS features including Message Centre, Onboarding BAU releases, Strategic Events Platform, and onboarding API consumers * Maintain and enhance platform infrastructure including Documentum,
NEW
)
We are looking for a strong Senior Digital Java Developer for a 12 month contract based in Leeds, UK * Experience of leading or directing a team of Java Developers. J2EE, Java, microservices, REST, APIs, JPA, Hibernate, SQL, JWT, Cloud, digital, PostgreSQL, Oracle DB, AWS, Lambda, AKS, DevOps, Jenkins, Azure, JavaScript, SC Clearance, SC Cleared £700 per day inside IR35 via an umbrella company - 12 months, extendable - Leeds (Hybrid; 60% onsite/40% remote) Essential Experience Required * Must be SC Cleared OR eligible for SC Clearance * Experience of building useful, robust automated test suite to support a continuous deployment environment, implementing API's for internal and external use. * Taking part in 2nd-line support of applica
We are looking for a strong Senior Digital Java Developer for a 12 month contract based in Leeds, UK * Experience of leading or directing a team of Java Developers. J2EE, Java, microservices, REST, APIs, JPA, Hibernate, SQL, JWT, Cloud, digital, PostgreSQL, Oracle DB, AWS, Lambda, AKS, DevOps, Jenkins, Azure, JavaScript, SC Clearance, SC Cleared £700 per day inside IR35 via an umbrella company - 12 months, extendable - Leeds (Hybrid; 60% onsite/40% remote) Essential Experience Required * Must be SC Cleared OR eligible for SC Clearance * Experience of building useful, robust automated test suite to support a continuous deployment environment, implementing API's for internal and external use. * Taking part in 2nd-line support of applica
NEW
)
Copello Global is supporting a confidential client within the defence/technology sector in their search for an experienced Software Engineer to join them in Cheltenham. * Design, build, and maintain secure, scalable software (High Level of UK Government Security Clearance Required) Salary:up to £100k + Benefits - This is an exciting opportunity to work with a global leader on highly impactful mission-critical programmes. The Role * Write, review code, and support CI/CD pipelines * Break down complex features and manage them within Agile workflows * Deliver technical demos to internal and external stakeholders - Skills Required * Proficiency inJava, Python, or JavaScript * Experience withAWS or Azure * Familiarity withJenkins, GitLab, Docker, OpenShift, or Kubernetes * Working knowledge ofSQL, MongoDB, or Elasticsearch
Copello Global is supporting a confidential client within the defence/technology sector in their search for an experienced Software Engineer to join them in Cheltenham. * Design, build, and maintain secure, scalable software (High Level of UK Government Security Clearance Required) Salary:up to £100k + Benefits - This is an exciting opportunity to work with a global leader on highly impactful mission-critical programmes. The Role * Write, review code, and support CI/CD pipelines * Break down complex features and manage them within Agile workflows * Deliver technical demos to internal and external stakeholders - Skills Required * Proficiency inJava, Python, or JavaScript * Experience withAWS or Azure * Familiarity withJenkins, GitLab, Docker, OpenShift, or Kubernetes * Working knowledge ofSQL, MongoDB, or Elasticsearch
NEW
)
As a Senior Software Engineer on Palantir's Identity team, you will design, develop, and maintain core authentication and authorisation services. Your work will enhance the security and usability of identity governance workflows and access management for Palantirians and our customers globally. The Identity team is composed of engineers dedicated to reducing risk, minimising friction, and eliminating toil. o Design and build REST APIs that enable zero-touch, end-to-end automation of Identity and Access Management resources - Palantir builds the worlds leading software for data-driven decisions and operations. Your approach will emphasise secure-by-design principles, embedding security considerations into every phase o
As a Senior Software Engineer on Palantir's Identity team, you will design, develop, and maintain core authentication and authorisation services. Your work will enhance the security and usability of identity governance workflows and access management for Palantirians and our customers globally. The Identity team is composed of engineers dedicated to reducing risk, minimising friction, and eliminating toil. o Design and build REST APIs that enable zero-touch, end-to-end automation of Identity and Access Management resources - Palantir builds the worlds leading software for data-driven decisions and operations. Your approach will emphasise secure-by-design principles, embedding security considerations into every phase o
NEW
)
NVIDIA is looking for an experienced HPC Engineer to join the E2E software verification HPC/AI Infrastructure team. We are looking for an outstanding architect for a senior HPC, be a key player to the most exciting computing hardware and software to contribute to the latest breakthroughs in artificial intelligence and GPU computing. * Designing, implementing and maintaining large scale HPC/AI clusters with monitoring, logging and alerting * Knowledge of HPC and AI solution technologies from CPUs and GPUs to high speed interconnects and supporting software - We are building supercomputers and HPC clusters based on groundbreaking technologies. You will interact with HPC, OS, GPU compute, and systems specialist to architect, develop and bring up large scale performance platforms. Today, were tapping into the unlimited potential of AI to define the next era of computing.
NVIDIA is looking for an experienced HPC Engineer to join the E2E software verification HPC/AI Infrastructure team. We are looking for an outstanding architect for a senior HPC, be a key player to the most exciting computing hardware and software to contribute to the latest breakthroughs in artificial intelligence and GPU computing. * Designing, implementing and maintaining large scale HPC/AI clusters with monitoring, logging and alerting * Knowledge of HPC and AI solution technologies from CPUs and GPUs to high speed interconnects and supporting software - We are building supercomputers and HPC clusters based on groundbreaking technologies. You will interact with HPC, OS, GPU compute, and systems specialist to architect, develop and bring up large scale performance platforms. Today, were tapping into the unlimited potential of AI to define the next era of computing.
NEW
)
We are looking for Senior Software Developer to join our Cambridge-UK team! A highly skilled developer with strong C programming and good Python exposure as well as good design skills, to work on a major crypto-security product. * software embedded in HSMs, client-side tools, API libraries. * Software design & coding, testing, and review. * Degree or equivalent, in Software Engineering, Computer Science, Maths or relevant discipline. * Open-source software - as licensee, or as contributor. * Software development in Agile and/or SAFe. * Career Growth: Whether youre a budding developer or a seasoned expert, were invested in your professional journey. Join us at Entrust - At Entrust, were shaping the future of identity centric security s
We are looking for Senior Software Developer to join our Cambridge-UK team! A highly skilled developer with strong C programming and good Python exposure as well as good design skills, to work on a major crypto-security product. * software embedded in HSMs, client-side tools, API libraries. * Software design & coding, testing, and review. * Degree or equivalent, in Software Engineering, Computer Science, Maths or relevant discipline. * Open-source software - as licensee, or as contributor. * Software development in Agile and/or SAFe. * Career Growth: Whether youre a budding developer or a seasoned expert, were invested in your professional journey. Join us at Entrust - At Entrust, were shaping the future of identity centric security s
NEW
)
An incredible opportunity for an experienced Backend Engineer with advanced Go skills to join a prestigious tech client on a contract basis. As a Backend Engineer, you'll be working on mission-critical, data-intensive applications that push the boundaries of technology, taking ownership of the full software engineering lifecycle, including design, development, and implementation. Reporting into an Engineering Manager, the Backend Engineer will leverage modern technologies like AWS, Kubernetes, Docker, and Kafka, while also architecting and implementing microservices-based solutions in collaboration with cross-functional teams. If you're a passionate Backend Engineer who enjoys working autonomously, taking ownership, and building for impact in a high-trust, high-collaboration setting - apply now! This
An incredible opportunity for an experienced Backend Engineer with advanced Go skills to join a prestigious tech client on a contract basis. As a Backend Engineer, you'll be working on mission-critical, data-intensive applications that push the boundaries of technology, taking ownership of the full software engineering lifecycle, including design, development, and implementation. Reporting into an Engineering Manager, the Backend Engineer will leverage modern technologies like AWS, Kubernetes, Docker, and Kafka, while also architecting and implementing microservices-based solutions in collaboration with cross-functional teams. If you're a passionate Backend Engineer who enjoys working autonomously, taking ownership, and building for impact in a high-trust, high-collaboration setting - apply now! This