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16 API jobs in West Sussex + 20 miles
449 exact matches jobs are outside your preferred location
Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 350,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fuelled by its market leading capabilities in AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2024 global revenues of €22.1 billion. At Capgemini Invent, we believe difference drives change.
Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 350,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fuelled by its market leading capabilities in AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2024 global revenues of €22.1 billion. At Capgemini Invent, we believe difference drives change.
Be Part of Something Real - A close-knit team with big ideas. A passion for solving complex data challenges. A leading technology company specialising in data intelligence, AI and geospatial solutions. At Envitia, we are building something special. Were thrilled to announce that Envitia has been named one of the Sunday Times Top 100 Medium-Sized Companies to Work For in 2025 a prestigious recognition that highlights our commitment to creating an outstanding workplace where innovation, collaboration, and personal growth thrive. By using the power of data to tackle real-world challenges, our teams empower organisations to make smarter, data-driven decisions. Were small enough that your ideas get heard, your impact gets noticed and your growth actually matters to us. You wont get lost in the crowd; youll shape where we go next.
Be Part of Something Real - A close-knit team with big ideas. A passion for solving complex data challenges. A leading technology company specialising in data intelligence, AI and geospatial solutions. At Envitia, we are building something special. Were thrilled to announce that Envitia has been named one of the Sunday Times Top 100 Medium-Sized Companies to Work For in 2025 a prestigious recognition that highlights our commitment to creating an outstanding workplace where innovation, collaboration, and personal growth thrive. By using the power of data to tackle real-world challenges, our teams empower organisations to make smarter, data-driven decisions. Were small enough that your ideas get heard, your impact gets noticed and your growth actually matters to us. You wont get lost in the crowd; youll shape where we go next.
About the Hiring Team - Tencent Overseas IT has the mission to empower Tencents rapid global growth with future ready, global IT platforms, applications and services. We are chartered to lead the Overseas IT strategy, architecture, roadmap and execution. Satisfying our internal/external customers and becoming a world class global IT team are our top aspirations. What the Role Entails * Designing and developing websites and applications for both PC and mobile platforms. * Implementing user interface and user experience design. * Adhering to web standards and best practices to ensure accessibility, usability, and performance of websites and applications. * Collaborating with back-end developers to ensure correct data exchange between the front-end and back-end. * Ensuring cross-browser and cross-device compatibility of websites and applications.
About the Hiring Team - Tencent Overseas IT has the mission to empower Tencents rapid global growth with future ready, global IT platforms, applications and services. We are chartered to lead the Overseas IT strategy, architecture, roadmap and execution. Satisfying our internal/external customers and becoming a world class global IT team are our top aspirations. What the Role Entails * Designing and developing websites and applications for both PC and mobile platforms. * Implementing user interface and user experience design. * Adhering to web standards and best practices to ensure accessibility, usability, and performance of websites and applications. * Collaborating with back-end developers to ensure correct data exchange between the front-end and back-end. * Ensuring cross-browser and cross-device compatibility of websites and applications.
Ebury is a global fintech firm dedicated to empowering businesses to expand internationally through tailored and forward-thinking financial solutions. Since our founding in 2009, we've grown to a diverse team of over 1,700 professionals across 40+ offices and 29+ markets worldwide. Joining Ebury means becoming part of a collaborative and innovative environment where your contributions are valued. You'll play a key role in shaping the future of cross-border finance, while advancing your own career in a dynamic, high-growth industry. Senior Fullstack Engineer - London Office - Hybrid: 4 days in the office, 1 day working from home - We're looking for a Senior Fullstack Engineer to join our new, rapidly growing Cards team. In this role, you'll work on innovative fintech products, helping to solve customer problems by leveraging data and an entrepreneurial spirit.
Ebury is a global fintech firm dedicated to empowering businesses to expand internationally through tailored and forward-thinking financial solutions. Since our founding in 2009, we've grown to a diverse team of over 1,700 professionals across 40+ offices and 29+ markets worldwide. Joining Ebury means becoming part of a collaborative and innovative environment where your contributions are valued. You'll play a key role in shaping the future of cross-border finance, while advancing your own career in a dynamic, high-growth industry. Senior Fullstack Engineer - London Office - Hybrid: 4 days in the office, 1 day working from home - We're looking for a Senior Fullstack Engineer to join our new, rapidly growing Cards team. In this role, you'll work on innovative fintech products, helping to solve customer problems by leveraging data and an entrepreneurial spirit.
Legal Content AI Engineer
Legal Content AI Engineer
LEXISNEXIS RISK SOLUTIONS UK LIMITED T/a LexisNexis Risk Solutions Group
London
Competitive
Are you curious about emerging technologies in AI and automation in legal content? Do you have exposure to coding and Python? About our Team - LexisNexis Legal & Professional, which serves customers in more than 150 countries with 11,800 employees worldwide, is part of RELX, a global provider of information-based analytics and decision tools for professional and business customers. Our company has been a long-time leader in deploying AI and advanced technologies to the legal market to improve productivity and transform the overall business and practice of law, deploying ethical and powerful generative AI solutions with a flexible, multi-model approach that prioritises using the best model from todays top model creators for each individual legal use case. We are looking for a creative and collaborative AI Developer to lead the design and delivery of internal AI tools t
Are you curious about emerging technologies in AI and automation in legal content? Do you have exposure to coding and Python? About our Team - LexisNexis Legal & Professional, which serves customers in more than 150 countries with 11,800 employees worldwide, is part of RELX, a global provider of information-based analytics and decision tools for professional and business customers. Our company has been a long-time leader in deploying AI and advanced technologies to the legal market to improve productivity and transform the overall business and practice of law, deploying ethical and powerful generative AI solutions with a flexible, multi-model approach that prioritises using the best model from todays top model creators for each individual legal use case. We are looking for a creative and collaborative AI Developer to lead the design and delivery of internal AI tools t
At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? At Klaviyo, we believe the future of software lies not in productivity tools for human users but in software that can run and optimize itself based on outcome or reward metrics. We've built the infrastructure and application that serve as the interface between businesses and consumers. We now have over 167,000 customers, billions of consumer profiles, and hundreds of billions of customer messages and follow-on conversion data.
At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? At Klaviyo, we believe the future of software lies not in productivity tools for human users but in software that can run and optimize itself based on outcome or reward metrics. We've built the infrastructure and application that serve as the interface between businesses and consumers. We now have over 167,000 customers, billions of consumer profiles, and hundreds of billions of customer messages and follow-on conversion data.
At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Lead Software AI Engineer - At Klaviyo, we believe the future of software lies not in productivity tools for human users but in software that can run and optimize itself based on outcome or reward metrics. We've built the infrastructure and application that serve as the interface between businesses and consumers. We now have over 167,000 customers, billions of consumer profiles, and hundreds of billions of customer messages and fol
At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Lead Software AI Engineer - At Klaviyo, we believe the future of software lies not in productivity tools for human users but in software that can run and optimize itself based on outcome or reward metrics. We've built the infrastructure and application that serve as the interface between businesses and consumers. We now have over 167,000 customers, billions of consumer profiles, and hundreds of billions of customer messages and fol
Strong understanding of data integration concepts, file formats (CSV, Excel), and API-based workflows. * Hands-on experience with Postman for API testing, plus ability to read and analyze technical logs.
Strong understanding of data integration concepts, file formats (CSV, Excel), and API-based workflows. * Hands-on experience with Postman for API testing, plus ability to read and analyze technical logs.
NEW
Deep knowledge of enterprise architecture patterns, public cloud services (Azure, AWS), application design, integration patterns (API, event-driven), and data platforms.
Deep knowledge of enterprise architecture patterns, public cloud services (Azure, AWS), application design, integration patterns (API, event-driven), and data platforms.
Lead API design, integration strategies, and legacy modernization to microservices. * Integration - API Design & Management, CMS, Legacy Migration
Lead API design, integration strategies, and legacy modernization to microservices. * Integration - API Design & Management, CMS, Legacy Migration
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Hands-on .NET experience, including C# and ASP.NET WEB API.
Hands-on .NET experience, including C# and ASP.NET WEB API.
Architect and develop scalable and performant mission critical web applications using Next.js for front-end and Node.js for API development.
Architect and develop scalable and performant mission critical web applications using Next.js for front-end and Node.js for API development.
Familiarity with API testing and integration diagnostics
Familiarity with API testing and integration diagnostics
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Experience in developing and deploying Cloud Native Applications using Azure PaaS Capabilities (App Services Plans, Key Vault, SQL Azure DB, AzureFunctions, Containers, AKS, Logic Apps, Service Bus, Event Grid, API Management) * Experience in Enterprise Integration Technologies such as Azure API Management, Logic Apps, Service Bus
Experience in developing and deploying Cloud Native Applications using Azure PaaS Capabilities (App Services Plans, Key Vault, SQL Azure DB, AzureFunctions, Containers, AKS, Logic Apps, Service Bus, Event Grid, API Management) * Experience in Enterprise Integration Technologies such as Azure API Management, Logic Apps, Service Bus
Experience of RESTful API design
Experience of RESTful API design
Implement data solutions leveraging AWS services such as EMR, AWS Glue, AWS Lambda, Athena, API Gateway and AWS Step Functions * Hands-on experience with AWS data services such as EMR, AWS Glue, AWS Lambda, Athena, API Gateway and AWS Step Functions
Implement data solutions leveraging AWS services such as EMR, AWS Glue, AWS Lambda, Athena, API Gateway and AWS Step Functions * Hands-on experience with AWS data services such as EMR, AWS Glue, AWS Lambda, Athena, API Gateway and AWS Step Functions
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Broad Testing Experience: Experience in front-end and API testing.
Broad Testing Experience: Experience in front-end and API testing.
Upvests Investment API is easy to integrate so that fintechs and enterprises alike can save resources and fully focus on their core business.? Our Marketing team ensures Upvests Investment API is widely recognised as the best on the market. * 5+ years of product marketing experience in B2B SaaS, ideally within fintech, investments, or API-driven infrastructure.
Upvests Investment API is easy to integrate so that fintechs and enterprises alike can save resources and fully focus on their core business.? Our Marketing team ensures Upvests Investment API is widely recognised as the best on the market. * 5+ years of product marketing experience in B2B SaaS, ideally within fintech, investments, or API-driven infrastructure.
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Experience of working with REST API
Experience of working with REST API
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The OpenPayd platform delivers a suite of banking and payments infrastructure: accounts in over 40 currencies, FX, on/off ramp, international and domestic payments, Open Banking services all via a single API.
The OpenPayd platform delivers a suite of banking and payments infrastructure: accounts in over 40 currencies, FX, on/off ramp, international and domestic payments, Open Banking services all via a single API.
Proven track record building and scaling data platforms and API-first products, with the ability to drive innovation and adoption.
Proven track record building and scaling data platforms and API-first products, with the ability to drive innovation and adoption.
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The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
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Design and manage secure networking and service meshes (TLS, Istio, Linkerd, API gateways) to ensure encrypted and reliable service-to-service communication. * Experience designing and managing secure networking and service mesh (TLS, Istio, Linkerd, API gateways).
Design and manage secure networking and service meshes (TLS, Istio, Linkerd, API gateways) to ensure encrypted and reliable service-to-service communication. * Experience designing and managing secure networking and service mesh (TLS, Istio, Linkerd, API gateways).
Experience in consuming a RESTful API.
Experience in consuming a RESTful API.
Experience consuming RESTful API services * Experience writing RESTful API services, either in Javascript or TypeScript
Experience consuming RESTful API services * Experience writing RESTful API services, either in Javascript or TypeScript