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441 API jobs in London + 20 miles

Go Developer API

Client Server
The City, EC2
£100000 - £140000 per annum + benefits
Go Developer / Backend Software Engineer (Golang API) Remote UK to £140k Are you a skilled backend focussed technologist with strong Go / Golang development skills? You could be progressing your career at a scaling FinTech that is developing a fast, secure cross-border payments platform that is designed for ultra low-cost, near-instant money transfer at significantly higher transaction sizes than what's currently possible, with a mission to break down the barriers that have held back African businesses for decades. As a Go Developer you'll collaborate with a highly skilled, remote team, taking ownership of products and designing and developing new features and scalable APIs from scratch, working across the full development lifecycle from writing requirements to deploying into production.
Go Developer / Backend Software Engineer (Golang API) Remote UK to £140k Are you a skilled backend focussed technologist with strong Go / Golang development skills? You could be progressing your career at a scaling FinTech that is developing a fast, secure cross-border payments platform that is designed for ultra low-cost, near-instant money transfer at significantly higher transaction sizes than what's currently possible, with a mission to break down the barriers that have held back African businesses for decades. As a Go Developer you'll collaborate with a highly skilled, remote team, taking ownership of products and designing and developing new features and scalable APIs from scratch, working across the full development lifecycle from writing requirements to deploying into production.
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PREMIUMNEW

Backend Software Engineer Python API

Client Server
Queens Gate, SW7
£100000 - £130000 per annum + bonus + benefits
Backend Software Engineer / Developer (Python API) London to £130k One of the world's oldest Hedge Funds with over $10 billion under management is seeking a technologist Backend Software Engineer to join their Quant Analytics team to build a quant library, working closely with Quants as the go to person for software engineering within the team. This is a senior, hands-on role where you can make a real impact; you'll take ownership working across the full software development lifecycle from requirements through to deployment with a focus on complex backend systems. You'll join colleagues in the London office with flexible hours you'll be based in amazing offices with free onsite gym as well as other perks such as catered lunches and the flexibility to work from home once a week.
Backend Software Engineer / Developer (Python API) London to £130k One of the world's oldest Hedge Funds with over $10 billion under management is seeking a technologist Backend Software Engineer to join their Quant Analytics team to build a quant library, working closely with Quants as the go to person for software engineering within the team. This is a senior, hands-on role where you can make a real impact; you'll take ownership working across the full software development lifecycle from requirements through to deployment with a focus on complex backend systems. You'll join colleagues in the London office with flexible hours you'll be based in amazing offices with free onsite gym as well as other perks such as catered lunches and the flexibility to work from home once a week.
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PREMIUMNEW

Software Engineer JavaScript Node.js AWS API

Client Server
SE1, South East London
£70000 - £85000 per annum + benefits
Software Engineer / Developer (JavaScript Node.js AWS API) London / WFH to £85k Are you a technologist Software Engineer who enjoys using a range of languages whilst continually learning? You could be progressing your career at a successful and growing Cyber Security Risk Management tech company, working on complex and interesting systems at the cutting edge of technology used by insurance company to assess security risk. As a Software Engineer you'll join the Product Engineering team working on the development of websites, APIs and efficient database queries. As well as JavaScript and SQL you'll be working with TypeScript, Node.js and serverless AWS with a focus on backend development with exposure to the React front end too.
Software Engineer / Developer (JavaScript Node.js AWS API) London / WFH to £85k Are you a technologist Software Engineer who enjoys using a range of languages whilst continually learning? You could be progressing your career at a successful and growing Cyber Security Risk Management tech company, working on complex and interesting systems at the cutting edge of technology used by insurance company to assess security risk. As a Software Engineer you'll join the Product Engineering team working on the development of websites, APIs and efficient database queries. As well as JavaScript and SQL you'll be working with TypeScript, Node.js and serverless AWS with a focus on backend development with exposure to the React front end too.
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PREMIUMNEW

Senior QA Test Engineer SaaS

Client Server
Underhill Park, RH2
£80000 - £90000 per annum + bonus + benefits
Are you an experienced QA Test Engineer seeking a role where you can make a real impact? You could be progressing your career as a Senior QA Test Engineer at a global InsurTech business that is producing game changing technology. As a Senior QA Test Engineer you will collaborate with the Lead QA within a product team responsible for the quality of a flagship insurance underwriting product used globally by all major insurers. You'll build a strong understanding of the product; using a 'contract testing' mindset you'll perform non-functional and exploratory testing, form test strategy and collaborate closely with software engineers, pushing back on requirements where necessary to ensure the product meets quality standards with robust features. You'll decide which tests to run to test particular features using a mix of automation and manual techniques.
Are you an experienced QA Test Engineer seeking a role where you can make a real impact? You could be progressing your career as a Senior QA Test Engineer at a global InsurTech business that is producing game changing technology. As a Senior QA Test Engineer you will collaborate with the Lead QA within a product team responsible for the quality of a flagship insurance underwriting product used globally by all major insurers. You'll build a strong understanding of the product; using a 'contract testing' mindset you'll perform non-functional and exploratory testing, form test strategy and collaborate closely with software engineers, pushing back on requirements where necessary to ensure the product meets quality standards with robust features. You'll decide which tests to run to test particular features using a mix of automation and manual techniques.
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PREMIUMNEW

Technical Product Owner - B2B / B2C / AI / API

Sanderson Recruitment
EC1, City of London
£55000 - £60000 per annum
Technical Product Owner / Technical Product Manager / Software Product Owner / SaaS Product Owner Fully remote £55,000 - £60,000 Our client is passionate bout redefining engineering and AI automation. As we expand into more intelligent and scalable product offerings, we are looking for a Product Manager to lead a core product area, transforming strategic vision into tangible results. This is a hands-on, cross-functional role ideal for someone excited by high-impact delivery, AI innovation, and creating structured product systems in a rapidly growing tech team. As Product Owner, you'll own and drive the roadmap for one of our core product areas. We are looking for someone who thrives in fast-paced environments and enjoys taking an idea from concept to customer impact.
Technical Product Owner / Technical Product Manager / Software Product Owner / SaaS Product Owner Fully remote £55,000 - £60,000 Our client is passionate bout redefining engineering and AI automation. As we expand into more intelligent and scalable product offerings, we are looking for a Product Manager to lead a core product area, transforming strategic vision into tangible results. This is a hands-on, cross-functional role ideal for someone excited by high-impact delivery, AI innovation, and creating structured product systems in a rapidly growing tech team. As Product Owner, you'll own and drive the roadmap for one of our core product areas. We are looking for someone who thrives in fast-paced environments and enjoys taking an idea from concept to customer impact.
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FEATURED
AWS, Azure, Kubernetes, Service Mesh, API gateways, and API security, Python, JavaScript, GoLang, Terraform, CloudFormation (AWS), and Azure Resource Manager (ARM) templates. Are you passionate about cloud security and eager to engineer robust security solutions within AWS and Azure environments? We are seeking Senior Cloud & Application Security Engineers to help our client define and implement its cloud security strategy. If you're an experienced Security Engineering professional excited to work with cutting-edge technology and collaborate with diverse teams, we want to hear from you! * Strong understanding of cloud and application security concepts, including secure coding practices, threat modeling, vulnerability management, and access control mechanisms.
AWS, Azure, Kubernetes, Service Mesh, API gateways, and API security, Python, JavaScript, GoLang, Terraform, CloudFormation (AWS), and Azure Resource Manager (ARM) templates. Are you passionate about cloud security and eager to engineer robust security solutions within AWS and Azure environments? We are seeking Senior Cloud & Application Security Engineers to help our client define and implement its cloud security strategy. If you're an experienced Security Engineering professional excited to work with cutting-edge technology and collaborate with diverse teams, we want to hear from you! * Strong understanding of cloud and application security concepts, including secure coding practices, threat modeling, vulnerability management, and access control mechanisms.
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Enterprise Architect

Red Engine
EC1V, City of London, EC1V 7LQ
£75000.00 - £80000.00 per annum
About Us Hello, we are Red Engine, the team behind the award-winning global brands Flight Club and Electric Shuffle. We're obsessed with disrupting the hospitality industry by creating and delivering the best possible experience - across all venues, products and brands. Our central team covers the full spectrum of skills needed to bring each concept to life from design to marketing, sales to interior design, people and training, to finance, gaming and HR and everything in between. Were not just a team of people, we are dreamers, artists, rocket scientists, content curators, forward thinkers and the industrys finest. We love what we do and are proud to be included in the Sunday Times Best Places to Work 2024
About Us Hello, we are Red Engine, the team behind the award-winning global brands Flight Club and Electric Shuffle. We're obsessed with disrupting the hospitality industry by creating and delivering the best possible experience - across all venues, products and brands. Our central team covers the full spectrum of skills needed to bring each concept to life from design to marketing, sales to interior design, people and training, to finance, gaming and HR and everything in between. Were not just a team of people, we are dreamers, artists, rocket scientists, content curators, forward thinkers and the industrys finest. We love what we do and are proud to be included in the Sunday Times Best Places to Work 2024
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PREMIUMNEW
Please read carefully before applying I am looking for an IT Manager who has experience of CRMs (ideally Hubspot) and ERPs (ideally Syrinx) and experience of system integrations via APIs. This will be an immediate project to be completed straight away. Previous experience in a Senior IT role Understanding of IT architectureExperience of developing an IT strategy, and keeping it on track with budgets and timelines Experience of collaborating with cross-functional teams, stakeholders, and vendors Experience of mitigating risks and identifying opportunities for process improvement Experience of ensuring quality, compliance and IT security You are a people manager and can lead/build an IT team Can do a five days a week on site role in Dartford Salary - competitive If you are interested, apply now.
Please read carefully before applying I am looking for an IT Manager who has experience of CRMs (ideally Hubspot) and ERPs (ideally Syrinx) and experience of system integrations via APIs. This will be an immediate project to be completed straight away. Previous experience in a Senior IT role Understanding of IT architectureExperience of developing an IT strategy, and keeping it on track with budgets and timelines Experience of collaborating with cross-functional teams, stakeholders, and vendors Experience of mitigating risks and identifying opportunities for process improvement Experience of ensuring quality, compliance and IT security You are a people manager and can lead/build an IT team Can do a five days a week on site role in Dartford Salary - competitive If you are interested, apply now.
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FEATURED
A leading retailer is looking for an HR Data Analyst (PowerBI, Workday, HR, DAX) to join a major transformation project. As the HR Data Analyst (PowerBI, Workday, HR, DAX) you have excellent skills/experience with PowerBI, Workday and HR, being responsible for designing, building, testing and maintaining PowerBI Dashboards, ensuring critical processes meet business requirements. You will have solid knowledge of Alteryx and Workday APIs to support with mapping impacts and potential rebuilds, whilst creating and maintaining technical documentation, providing expertise on best practices and support troubleshooting and enhancement initiatives. Skills and Experience - PowerBI - Workday and HR experience - API experience with Alteryx and Workday - Designing, Building, Testing and Maintaining PowerBI Dashboards for Talent Acquisition, Talent Review and People Structures
A leading retailer is looking for an HR Data Analyst (PowerBI, Workday, HR, DAX) to join a major transformation project. As the HR Data Analyst (PowerBI, Workday, HR, DAX) you have excellent skills/experience with PowerBI, Workday and HR, being responsible for designing, building, testing and maintaining PowerBI Dashboards, ensuring critical processes meet business requirements. You will have solid knowledge of Alteryx and Workday APIs to support with mapping impacts and potential rebuilds, whilst creating and maintaining technical documentation, providing expertise on best practices and support troubleshooting and enhancement initiatives. Skills and Experience - PowerBI - Workday and HR experience - API experience with Alteryx and Workday - Designing, Building, Testing and Maintaining PowerBI Dashboards for Talent Acquisition, Talent Review and People Structures
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A leading retailer is looking for a PowerBI Data Analyst (Workday, HR, DAX) to join a major transformation project. As the PowerBI Data Analyst (Workday, HR, DAX) you have excellent skills/experience with PowerBI, Workday and HR, being responsible for designing, building, testing and maintaining PowerBI Dashboards, ensuring critical processes meet business requirements. You will have solid knowledge of Alteryx and Workday APIs to support with mapping impacts and potential rebuilds, whilst creating and maintaining technical documentation, providing expertise on best practices and support troubleshooting and enhancement initiatives. Skills and Experience - PowerBI - Workday and HR experience - API experience with Alteryx and Workday - Designing, Building, Testing and Maintaining PowerBI Dashboards for Talent Acquisition, Talent Review and People Structures
A leading retailer is looking for a PowerBI Data Analyst (Workday, HR, DAX) to join a major transformation project. As the PowerBI Data Analyst (Workday, HR, DAX) you have excellent skills/experience with PowerBI, Workday and HR, being responsible for designing, building, testing and maintaining PowerBI Dashboards, ensuring critical processes meet business requirements. You will have solid knowledge of Alteryx and Workday APIs to support with mapping impacts and potential rebuilds, whilst creating and maintaining technical documentation, providing expertise on best practices and support troubleshooting and enhancement initiatives. Skills and Experience - PowerBI - Workday and HR experience - API experience with Alteryx and Workday - Designing, Building, Testing and Maintaining PowerBI Dashboards for Talent Acquisition, Talent Review and People Structures
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Start: ASAP Duration: 6 months Pay: up to £510 per day (inside IR35) Location: Guildford (2-days per week) We're seeking a Senior Infrastructure Solution Architect for a high-impact role within a fast-moving, regulated organisation. You'll be responsible for designing repeatable infrastructure patterns and secure, resilient solutions that align with business and IT strategy. This is a senior-level role requiring strong technical expertise and the ability to engage with stakeholders at all levels. - Create and maintain infrastructure solution designs and architecture patterns - Translate business requirements into secure, scalable, and supportable technology solutions - Identify risks and propose practical mitigations - Collaborate closely with business and technical teams to influence architecture direction - Support the design and delivery of mission-critical systems
Start: ASAP Duration: 6 months Pay: up to £510 per day (inside IR35) Location: Guildford (2-days per week) We're seeking a Senior Infrastructure Solution Architect for a high-impact role within a fast-moving, regulated organisation. You'll be responsible for designing repeatable infrastructure patterns and secure, resilient solutions that align with business and IT strategy. This is a senior-level role requiring strong technical expertise and the ability to engage with stakeholders at all levels. - Create and maintain infrastructure solution designs and architecture patterns - Translate business requirements into secure, scalable, and supportable technology solutions - Identify risks and propose practical mitigations - Collaborate closely with business and technical teams to influence architecture direction - Support the design and delivery of mission-critical systems
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Senior Java Developer Spring Boot

Client Server
The City, EC2
£70000 - £80000 per annum + bonus + benefits
Senior Java Developer / Backend Software Engineer (Spring Boot) London to £80k Well established trading brokerage is seeking a Senior Java Developer as they expand into UK markets. As a Senior Java Developer, you'll join a small technology team building Greenfield trading systems from scratch, working in a start-up environment with backing from the larger organisation. You'll take ownership, working across the full development lifecycle and will quickly see the impact of your work, developing high quality, scalable and secure trading applications with a focus on backend Java development and API implementation within an AWS environment. You'll join a team of finance entrepreneurs and technologists in City based office three days a week, there's a smart dress code and flexibility to work from home two days a week.
Senior Java Developer / Backend Software Engineer (Spring Boot) London to £80k Well established trading brokerage is seeking a Senior Java Developer as they expand into UK markets. As a Senior Java Developer, you'll join a small technology team building Greenfield trading systems from scratch, working in a start-up environment with backing from the larger organisation. You'll take ownership, working across the full development lifecycle and will quickly see the impact of your work, developing high quality, scalable and secure trading applications with a focus on backend Java development and API implementation within an AWS environment. You'll join a team of finance entrepreneurs and technologists in City based office three days a week, there's a smart dress code and flexibility to work from home two days a week.
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Senior Python Developer

Run-Time Group Ltd
SW1, South West London
Unspecified
Job Title:Senior Python Developer (Python/Django) Location:Fully Remote Job Type:Full-Time Salary 80k - 100k A fast-growing tech company revolutionizing the e-commerce/data analytics sector with cutting-edge software solutions. Join their dynamic engineering team and contribute to innovative projects. We're looking for a passionate Python Developer (Python/Django) with 5 + years of experience. This role offers the opportunity to work in a fast-paced, collaborative environment and grow your skills. * Develop and maintain scalable applications using Python (Django). * Build and integrate APIs and third-party services. * Participate in Agile development cycles and CI/CD processes. * Optimize applications for performance and scalability. * Collaborate with cross-functional teams. * Computer Science or STEM degree from a top Russell Group University (1st or 2:1).
Job Title:Senior Python Developer (Python/Django) Location:Fully Remote Job Type:Full-Time Salary 80k - 100k A fast-growing tech company revolutionizing the e-commerce/data analytics sector with cutting-edge software solutions. Join their dynamic engineering team and contribute to innovative projects. We're looking for a passionate Python Developer (Python/Django) with 5 + years of experience. This role offers the opportunity to work in a fast-paced, collaborative environment and grow your skills. * Develop and maintain scalable applications using Python (Django). * Build and integrate APIs and third-party services. * Participate in Agile development cycles and CI/CD processes. * Optimize applications for performance and scalability. * Collaborate with cross-functional teams. * Computer Science or STEM degree from a top Russell Group University (1st or 2:1).
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Lead Software Engineer

Method-Resourcing
London
£95000 - £105000 per annum
Method Resourcing is thrilled to be partnering with a global leader in the travel services and benefits sector. They're looking for a Lead Software Engineer to drive innovation and be the technical backbone of a talented team of engineers. In this role, you'll be deeply involved in coding while setting the bar for engineering excellence. Partnering with an Engineering Manager and Product Manager, you'll help develop scalable software and drive new product launches. As the most senior engineer in the squad, you'll shape technical direction, make architectural choices, and mentor the team. Using modern cloud technologies like TypeScript and GraphQL, you'll build new systems from scratch, embedding AI, automation, and best practices into your work. * Tech Stack Expertise - Skilled in TypeScript (Node.js mainly but also React) & Cloud technologies such as AWS.
Method Resourcing is thrilled to be partnering with a global leader in the travel services and benefits sector. They're looking for a Lead Software Engineer to drive innovation and be the technical backbone of a talented team of engineers. In this role, you'll be deeply involved in coding while setting the bar for engineering excellence. Partnering with an Engineering Manager and Product Manager, you'll help develop scalable software and drive new product launches. As the most senior engineer in the squad, you'll shape technical direction, make architectural choices, and mentor the team. Using modern cloud technologies like TypeScript and GraphQL, you'll build new systems from scratch, embedding AI, automation, and best practices into your work. * Tech Stack Expertise - Skilled in TypeScript (Node.js mainly but also React) & Cloud technologies such as AWS.
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FEATUREDNEW

Senior Full Stack Developer Java JavaScript React

Client Server
The City, EC2
£70000 - £80000 per annum + bonus + benefits
Senior Full Stack Developer / Software Engineer (Java JavaScript React) London to £80k Well established trading brokerage is seeking a Senior Full Stack Developer as they expand into UK markets. As a Senior Full Stack Developer, you'll join a small technology team building Greenfield trading systems from scratch, working in a start-up environment with backing from the larger organisation. You'll take ownership, working across the full development lifecycle and will quickly see the impact of your work, developing high quality, scalable and secure trading applications, working across the full tech stack from Java on the backend through to JavaScript / TypeScript, React and React Native front end work.
Senior Full Stack Developer / Software Engineer (Java JavaScript React) London to £80k Well established trading brokerage is seeking a Senior Full Stack Developer as they expand into UK markets. As a Senior Full Stack Developer, you'll join a small technology team building Greenfield trading systems from scratch, working in a start-up environment with backing from the larger organisation. You'll take ownership, working across the full development lifecycle and will quickly see the impact of your work, developing high quality, scalable and secure trading applications, working across the full tech stack from Java on the backend through to JavaScript / TypeScript, React and React Native front end work.
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integration'segal client is seeking an experienced IntApp engineer to join their growing technology function. The successful candidate will take ownership of several applications which focuses on the firms IntApp Conflicts, Intake, Walls, Terms and all related systems and tools. The role will also be involved the migration of my client's risk platform to the cloud. * Skills and experience required * Strong commercial experience and knowledge of IntApp configuration tools * Strong understanding and experience with integration's such as APIs, database to database FTP and web services * Strong knowledge of cloud systems such as integrations features and release management * Knowledge of AI and GenAI and its application within the legal sector * First class communication and stakeholder management skills * Commercial experience of SQL Server
integration'segal client is seeking an experienced IntApp engineer to join their growing technology function. The successful candidate will take ownership of several applications which focuses on the firms IntApp Conflicts, Intake, Walls, Terms and all related systems and tools. The role will also be involved the migration of my client's risk platform to the cloud. * Skills and experience required * Strong commercial experience and knowledge of IntApp configuration tools * Strong understanding and experience with integration's such as APIs, database to database FTP and web services * Strong knowledge of cloud systems such as integrations features and release management * Knowledge of AI and GenAI and its application within the legal sector * First class communication and stakeholder management skills * Commercial experience of SQL Server
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Full Stack Developer (Cloud)

COREcruitment International
N1, North London
£60k per year + /
Are you a cloud-savvy Full Stack Developer looking for your next big challenge? This company is a high-growth, purpose-driven organisation on a mission to empower UK business leaders and scale ambitious mid-sized companies into tomorrow’s giants. As a Full Stack Developer (Cloud), you will play a critical role in designing and delivering innovative digital solutions that directly support business leaders and entrepreneurs across the UK. You will work across the full technology stack—building, integrating, and optimising applications using modern cloud infrastructure and development tools. * Design, develop, and maintain robust full-stack applications * Deploy and manage cloud infrastructure using AWS (preferred), Azure, or GCP * Collaborate cross-functionally with designers, marketers, and product teams * Develop and integrate RESTful APIs and third-party service
Are you a cloud-savvy Full Stack Developer looking for your next big challenge? This company is a high-growth, purpose-driven organisation on a mission to empower UK business leaders and scale ambitious mid-sized companies into tomorrow’s giants. As a Full Stack Developer (Cloud), you will play a critical role in designing and delivering innovative digital solutions that directly support business leaders and entrepreneurs across the UK. You will work across the full technology stack—building, integrating, and optimising applications using modern cloud infrastructure and development tools. * Design, develop, and maintain robust full-stack applications * Deploy and manage cloud infrastructure using AWS (preferred), Azure, or GCP * Collaborate cross-functionally with designers, marketers, and product teams * Develop and integrate RESTful APIs and third-party service
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FEATUREDNEW

Magento Developer

WHD Consulting Ltd
London
From £450 to £520 per day
My client is looking for a talentedMagento Developerwith strong backend experience to join their dynamic dev team. If you enjoy building custom ecommerce solutions, integrating complex systems, and collaborating in a supportive tech environment, this could be the role for you. This role is predominately remote, although the team meet up onsite once a month near Farringdon. There is no specific requirement to attend every month, however some flexibility would be beneficial. The Role Youll be responsible for delivering tailored features and functionality across a variety of ecommerce projects. * Developing and maintaining bespoke Magento functionality. * Working with the development team to ensure new code aligns with the Magento framework and delivers great performance. * Reviewing code, pull requests, and supporting peer development.
My client is looking for a talentedMagento Developerwith strong backend experience to join their dynamic dev team. If you enjoy building custom ecommerce solutions, integrating complex systems, and collaborating in a supportive tech environment, this could be the role for you. This role is predominately remote, although the team meet up onsite once a month near Farringdon. There is no specific requirement to attend every month, however some flexibility would be beneficial. The Role Youll be responsible for delivering tailored features and functionality across a variety of ecommerce projects. * Developing and maintaining bespoke Magento functionality. * Working with the development team to ensure new code aligns with the Magento framework and delivers great performance. * Reviewing code, pull requests, and supporting peer development.
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Junior .NET Developer

Lime Street Recruitment LTD
EC3, City of London
From £30,000 to £40,000 per annum
We are looking for an enthusiastic .NET (C#)/Blazor developer to work on a variety of projects, including AI and price modelling. We have a team of around 16 developers across various disciplines in London with more developers in the US. Based in the heart of the City of London, we produce applications for both our internal and external users. We are not looking necessarily for years of commercial experience. You will need some .NET experience, and we will want to see examples of work you have already done. However enthusiasm and commitment are far more important to us. We will invest heavily in the right person. We are working on a number of applications that call out to the Azure AI services. We also integrate with external market systems and external datasets. We expect to keep investing heavily in AI and you would be at the forefront of this development.
We are looking for an enthusiastic .NET (C#)/Blazor developer to work on a variety of projects, including AI and price modelling. We have a team of around 16 developers across various disciplines in London with more developers in the US. Based in the heart of the City of London, we produce applications for both our internal and external users. We are not looking necessarily for years of commercial experience. You will need some .NET experience, and we will want to see examples of work you have already done. However enthusiasm and commitment are far more important to us. We will invest heavily in the right person. We are working on a number of applications that call out to the Azure AI services. We also integrate with external market systems and external datasets. We expect to keep investing heavily in AI and you would be at the forefront of this development.
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Up to £600 per day Outside IR35 London (Hybrid) The Role As a Product Owner with a specialist focus on data mapping, you’ll be at the heart of enabling robust, scalable, and intelligent data flows across our internal systems. You'll define and deliver product capabilities that ensure seamless data flow between systems, APIs, and third-party platforms, driving clarity, consistency, and business value across our data landscape. * Own the data mapping product area from vision to execution. * Translate business needs into detailed data mapping requirements and user stories. * Collaborate with engineering, data, and compliance teams to implement mappings across internal systems. * Ensure data accuracy, consistency, and traceability across the platform. * Maintain documentation and support agile delivery practices.
Up to £600 per day Outside IR35 London (Hybrid) The Role As a Product Owner with a specialist focus on data mapping, you’ll be at the heart of enabling robust, scalable, and intelligent data flows across our internal systems. You'll define and deliver product capabilities that ensure seamless data flow between systems, APIs, and third-party platforms, driving clarity, consistency, and business value across our data landscape. * Own the data mapping product area from vision to execution. * Translate business needs into detailed data mapping requirements and user stories. * Collaborate with engineering, data, and compliance teams to implement mappings across internal systems. * Ensure data accuracy, consistency, and traceability across the platform. * Maintain documentation and support agile delivery practices.
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FEATUREDNEW
Cardiff Based - Hybrid Working A large financial organisation is seeking a diligent Business Test Analyst to support the development of business test strategies and test plans. This role involves collaborating with various stakeholders to ensure the delivery of high-quality testing outcomes that align with business requirements. Responsibilities * Contribute to and support the development of business test strategies and test plans across multiple markets. * Demonstrate strong capabilities in functional and business acceptance testing while collaborating effectively with business stakeholders. * Translate business requirements and operational workflows into test scenarios and relevant test cases. * Define, document, and maintain business test scenarios and test cases in collaboration with business stakeholders, analysts, and product teams.
Cardiff Based - Hybrid Working A large financial organisation is seeking a diligent Business Test Analyst to support the development of business test strategies and test plans. This role involves collaborating with various stakeholders to ensure the delivery of high-quality testing outcomes that align with business requirements. Responsibilities * Contribute to and support the development of business test strategies and test plans across multiple markets. * Demonstrate strong capabilities in functional and business acceptance testing while collaborating effectively with business stakeholders. * Translate business requirements and operational workflows into test scenarios and relevant test cases. * Define, document, and maintain business test scenarios and test cases in collaboration with business stakeholders, analysts, and product teams.
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PREMIUMNEW

Functional Consultant - D365 Field Service

Kinetech Recruitment
EC1V, City of London, EC1V 2NX
Up to £60,000 per annum + Bonus + Benefits
Functional Consultant Microsoft Dynamics 365 Field Service & CE Fully Remote (UK-based) Salary up to £60,000 + bonus An ambitious early-stage business is looking for a Functional Consultant for Dynamics 365 Field Service and other CE modules (Customer Service / Sales) a critical tool for the business. The Role As Functional Consultant, you will take full ownership of Microsoft Dynamics Field Service product, acting as the vital link between business operations and technical solutions. You will manage change requests, and oversee the integration of acquired businesses into the group platform. Key Responsibilities * Help to define Product Strategy:Shape the vision and roadmap for the Dynamics 365 Field Service to support business growth. * Collaborate with Stakeholders:Gather, prioritise, and translate business needs into detailed plans.
Functional Consultant Microsoft Dynamics 365 Field Service & CE Fully Remote (UK-based) Salary up to £60,000 + bonus An ambitious early-stage business is looking for a Functional Consultant for Dynamics 365 Field Service and other CE modules (Customer Service / Sales) a critical tool for the business. The Role As Functional Consultant, you will take full ownership of Microsoft Dynamics Field Service product, acting as the vital link between business operations and technical solutions. You will manage change requests, and oversee the integration of acquired businesses into the group platform. Key Responsibilities * Help to define Product Strategy:Shape the vision and roadmap for the Dynamics 365 Field Service to support business growth. * Collaborate with Stakeholders:Gather, prioritise, and translate business needs into detailed plans.
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AI Engineer - London

Transparent Technologies
The City, EC2
£70000 - £130000 per annum
Full Stack AI Engineer | £70k-£130k + Benefits + Shares| London (Hybrid, 3 days a week) Are you a Full Stack AI Engineer looking for a role at the cutting edge of AI, Generative Models, and scalable cloud solutions? Do you thrive in fast-paced environments where your work directly influences the next generation of AI applications? If so, this is the opportunity for you. Why Join? * Develop and deploy scalable micro-services and data pipelines that power AI-driven applications. * Gain hands-on experience with LLMs, fine-tuning, prompting and AI-powered solutions to drive innovation. * Design and implement quality assurance/testing frameworks to ensure robust AI performance. * Work closely with other AI specialists, engineers, and product leaders to solve complex technical challenges for FTSE 100 clients.
Full Stack AI Engineer | £70k-£130k + Benefits + Shares| London (Hybrid, 3 days a week) Are you a Full Stack AI Engineer looking for a role at the cutting edge of AI, Generative Models, and scalable cloud solutions? Do you thrive in fast-paced environments where your work directly influences the next generation of AI applications? If so, this is the opportunity for you. Why Join? * Develop and deploy scalable micro-services and data pipelines that power AI-driven applications. * Gain hands-on experience with LLMs, fine-tuning, prompting and AI-powered solutions to drive innovation. * Design and implement quality assurance/testing frameworks to ensure robust AI performance. * Work closely with other AI specialists, engineers, and product leaders to solve complex technical challenges for FTSE 100 clients.
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Java Developer

Data Inc. (UK) Ltd
W1, Central London
From £400 to £500 per day
Job Title: Java Developer Location: London UK- 5 Days onsite Vacancy Type:Contract- 12 Months Pay rate:- - * 3+ years of software development experience in one or more general purpose programming languages such as Java / JavaScript / Python, and expected to be hands-on to software development tasks Solid Experience in AWS Cloud development/deployment (other Cloud dev exp. would be a plus) * Experience implementing REST APIs (knowledge in API security would be a plus), unit tests and using a test-driven development approach and associated testing tools Familiar with SDLC process Experience in smart contract programming to develop commercial solutions (e.g. EVM, DAML), on private and public blockchains would be a plus
Job Title: Java Developer Location: London UK- 5 Days onsite Vacancy Type:Contract- 12 Months Pay rate:- - * 3+ years of software development experience in one or more general purpose programming languages such as Java / JavaScript / Python, and expected to be hands-on to software development tasks Solid Experience in AWS Cloud development/deployment (other Cloud dev exp. would be a plus) * Experience implementing REST APIs (knowledge in API security would be a plus), unit tests and using a test-driven development approach and associated testing tools Familiar with SDLC process Experience in smart contract programming to develop commercial solutions (e.g. EVM, DAML), on private and public blockchains would be a plus
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FEATUREDNEW
C# .Net Programme Manager with project delivery skills, based near Charing Cross Station. It is a Hybrid role, 3 days in office paying upto 85k. This London-based Financial Services firm is seeking a hands-on individual to manage technology projects through their full lifecycle, from gathering requirements to overseeing change releases and user acceptance testing. You will manage relationships with technology partners and the source code repositories. With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
C# .Net Programme Manager with project delivery skills, based near Charing Cross Station. It is a Hybrid role, 3 days in office paying upto 85k. This London-based Financial Services firm is seeking a hands-on individual to manage technology projects through their full lifecycle, from gathering requirements to overseeing change releases and user acceptance testing. You will manage relationships with technology partners and the source code repositories. With Strong technical proficiencies in the .NET stack, C#, Python, React, Angular, and SQL and experience with CI/CD pipelines, GitHub projects, GitHub Enterprise Server, Azure DevOps, container technologies (Docker, Kubernetes etc.), and API gateway.
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What is the average salary for API in London?

Average salary per year
£72,499

The average salary for a API in London is £72,499. API in London salaries range from £62,499 to £87,499.

Frequently Asked Questions

How many API jobs are there in London?
There are 441 API jobs within 20 miles of London available on Jobsite right now.
Where in London are these jobs?
You can find jobs in City of London, Central London, West End.
What other similar jobs are there to API jobs in London?
As well as API jobs in London, you can find IT, Software Development, Management, amongst many others.
How many temporary and part-time API jobs are available in London?
There are 4 temporary API jobs and 8 part-time API jobs available in London at the moment.