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14 Permanent API jobs in Business Venture (MK11) + 20 miles
348 exact matches jobs are outside your preferred location
About us - At Xelix, we work with some of the worlds largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale-up - things move fast and expectations are high. We raised our Series B with Insight Partners in June 2025 and are expanding aggressively, whilst remaining profitable. We have over 100 talented people pulling together to achieve our goals. Everyone is trusted to take ownership, move fast and have a meaningful impact. We prioritise personal and professional growth, keep things fun & we love to celebrate a milestone together. In this role youll grow, be challenged and help shape the future of Xelix. If youre excited about building something special with us, wed love to hear from you. About the
About us - At Xelix, we work with some of the worlds largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale-up - things move fast and expectations are high. We raised our Series B with Insight Partners in June 2025 and are expanding aggressively, whilst remaining profitable. We have over 100 talented people pulling together to achieve our goals. Everyone is trusted to take ownership, move fast and have a meaningful impact. We prioritise personal and professional growth, keep things fun & we love to celebrate a milestone together. In this role youll grow, be challenged and help shape the future of Xelix. If youre excited about building something special with us, wed love to hear from you. About the
IPC is a fintech company that focuses on the human element. With a global presence, we support local markets with our advanced cloud-based trading communications and managed connectivity solutions. Through our portfolio of communications and connectivity solutions, we focus on solving business challenges and adapting to regulatory changes in the fast-paced global financial markets. This enables our clients to maintain consistent market access, a strong competitive advantage, and enhanced operational efficiency. Join a team that is dedicated to delivering groundbreaking products and making a significant impact on our clients' success. TITLE: VP, Product Management - DEPARTMENT: Product - REPORTING TO: Chief Product Officer - OFFICE LOCATION: New York or London - ROLE TYPE: Hybrid, Full-time - Overview of the Team
IPC is a fintech company that focuses on the human element. With a global presence, we support local markets with our advanced cloud-based trading communications and managed connectivity solutions. Through our portfolio of communications and connectivity solutions, we focus on solving business challenges and adapting to regulatory changes in the fast-paced global financial markets. This enables our clients to maintain consistent market access, a strong competitive advantage, and enhanced operational efficiency. Join a team that is dedicated to delivering groundbreaking products and making a significant impact on our clients' success. TITLE: VP, Product Management - DEPARTMENT: Product - REPORTING TO: Chief Product Officer - OFFICE LOCATION: New York or London - ROLE TYPE: Hybrid, Full-time - Overview of the Team
Who are Heidi? Heidi is on a mission to halve the time it takes to deliver world-class care. We believe that by 2050, every clinician will practice with AI systems that free them from administrative burdens and increase the quality and accessibility of care to patients across the world. Built for clinicians, by clinicians, at the core of Heidi is its people. We are an eclectic bunch of inventors, builders, scientists, nurses, doctors, mathematicians, designers, creatives, and high-agency executors. We achieve in 6 months what it takes our competitors 4 years to do. In just 12 months, 20 million patient consults were supported by Heidi, and were now powering more than 1 million consults every week. With our most recent $16.6MM round of funding from leading VC firms, were geared up to supercharge our ambitious global growth, starting with the US, Canada, UK and Europe -
Who are Heidi? Heidi is on a mission to halve the time it takes to deliver world-class care. We believe that by 2050, every clinician will practice with AI systems that free them from administrative burdens and increase the quality and accessibility of care to patients across the world. Built for clinicians, by clinicians, at the core of Heidi is its people. We are an eclectic bunch of inventors, builders, scientists, nurses, doctors, mathematicians, designers, creatives, and high-agency executors. We achieve in 6 months what it takes our competitors 4 years to do. In just 12 months, 20 million patient consults were supported by Heidi, and were now powering more than 1 million consults every week. With our most recent $16.6MM round of funding from leading VC firms, were geared up to supercharge our ambitious global growth, starting with the US, Canada, UK and Europe -
We're proud to announce we've won Advice firm of the year at the Money Marketing Awards - We're looking for a Data Science Tech Lead to help us build the scalable data models, technology and insights needed to transform millions of lives, by making high quality money advice affordable and accessible. This is an ideal opportunity for an ambitious self-starter to accelerate your development in a broad and varied role within a rapidly growing company. About Octopus Money - At Octopus Money, we're on a mission to make money advice accessible to all because the right advice can turn your life dreams into reality. The facts are alarming: half of Brits reach retirement age without enough money to live the life they want, financial stress is a leading cause of poor mental health and only 8% of us have access to 1-to-1 advice.
We're proud to announce we've won Advice firm of the year at the Money Marketing Awards - We're looking for a Data Science Tech Lead to help us build the scalable data models, technology and insights needed to transform millions of lives, by making high quality money advice affordable and accessible. This is an ideal opportunity for an ambitious self-starter to accelerate your development in a broad and varied role within a rapidly growing company. About Octopus Money - At Octopus Money, we're on a mission to make money advice accessible to all because the right advice can turn your life dreams into reality. The facts are alarming: half of Brits reach retirement age without enough money to live the life they want, financial stress is a leading cause of poor mental health and only 8% of us have access to 1-to-1 advice.
London, UK - Full time - 2025-09-05 - Posted 30+ Days Ago - 314612 - 09 - The Location: London, United Kingdom - S&P Global Ratings is looking for a highly motivated, enthusiastic and skilled senior developer to join Commercial Desktop team within Commercial Engineering, a team of technology professionals who define and execute the strategic roadmap for S&P Global Ratings Commercial team. The successful candidate will participate in the design and development of Commercial Desktop platform to help improve commercial workflows and overall productivity. The Team: Join the Rating Organization's Commercial Desktop Engineering Team, known for its expertise in commercial workflows and various technology stacks. This team values knowledge sharing, collaboration, and a unified strategy to build S&P Ratings' Commercial Desktop platform.
London, UK - Full time - 2025-09-05 - Posted 30+ Days Ago - 314612 - 09 - The Location: London, United Kingdom - S&P Global Ratings is looking for a highly motivated, enthusiastic and skilled senior developer to join Commercial Desktop team within Commercial Engineering, a team of technology professionals who define and execute the strategic roadmap for S&P Global Ratings Commercial team. The successful candidate will participate in the design and development of Commercial Desktop platform to help improve commercial workflows and overall productivity. The Team: Join the Rating Organization's Commercial Desktop Engineering Team, known for its expertise in commercial workflows and various technology stacks. This team values knowledge sharing, collaboration, and a unified strategy to build S&P Ratings' Commercial Desktop platform.
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
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Dynamics 365 Customer Service, Dynamics 365 Web API
Dynamics 365 Customer Service, Dynamics 365 Web API
Conduct UI and API testing.
Conduct UI and API testing.
Knowledge of document databases (MongoDB) and API interaction tools (such as Postman, or similar) * Experience with industry standard API Authentication/Authorization, including OAuth, OpenID Connect, SAML2
Knowledge of document databases (MongoDB) and API interaction tools (such as Postman, or similar) * Experience with industry standard API Authentication/Authorization, including OAuth, OpenID Connect, SAML2
Familiarity with API testing and integration diagnostics
Familiarity with API testing and integration diagnostics
NEW
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.
NEW
Conduct UI and API testing.
Conduct UI and API testing.
Experience working with API-driven platforms, authentication flows, and security best practices.
Experience working with API-driven platforms, authentication flows, and security best practices.
Familiarity with Entity Framework Core, asynchronous programming, and API design.
Familiarity with Entity Framework Core, asynchronous programming, and API design.
Our core technology is a proprietary suite of real-time indicators and predictive analytics available via web application, custom dashboards and API. * Understand the importance of design best practices, provide effective translation to code artifacts and implement appropriate integration approach for API/data layer.
Our core technology is a proprietary suite of real-time indicators and predictive analytics available via web application, custom dashboards and API. * Understand the importance of design best practices, provide effective translation to code artifacts and implement appropriate integration approach for API/data layer.
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
You possess a strong understanding of cloud computing, microservices, API design, and event-driven architectures.
You possess a strong understanding of cloud computing, microservices, API design, and event-driven architectures.
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APIs: Implement API security best practices (rate limiting, authentication, input validation)
APIs: Implement API security best practices (rate limiting, authentication, input validation)
Manager Data Engineering
Manager Data Engineering
LEXISNEXIS RISK SOLUTIONS UK LIMITED T/a LexisNexis Risk Solutions Group
London
Competitive
Experience with API design, integration, and management.
Experience with API design, integration, and management.
Modern tech stack experience - Demonstrable experience with cloud platforms (preferably AWS), containerisation (Docker, Kubernetes), and API design (gRPC, REST).
Modern tech stack experience - Demonstrable experience with cloud platforms (preferably AWS), containerisation (Docker, Kubernetes), and API design (gRPC, REST).
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In this critical role, youll develop and maintain REST API over serverless functions using TypeScript; youll also design and implement scalable PostgreSQL schemas and data models. Other organisations may call this role Software Engineer, Software Developer, Back End Software Engineer, Server-Side Developer, Full Stack Developer, or API Developer.
In this critical role, youll develop and maintain REST API over serverless functions using TypeScript; youll also design and implement scalable PostgreSQL schemas and data models. Other organisations may call this role Software Engineer, Software Developer, Back End Software Engineer, Server-Side Developer, Full Stack Developer, or API Developer.
NEW
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Technical knowledge and experience in producing testable, scalable, reusable and resilient services to provide API services to front end systems.
Technical knowledge and experience in producing testable, scalable, reusable and resilient services to provide API services to front end systems.
NEW
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Implementation of secure authentication using PKI, OIDC, and OAuth 2.0, and automates testing with unit and API tests.
Implementation of secure authentication using PKI, OIDC, and OAuth 2.0, and automates testing with unit and API tests.
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Lead container, API, and web application security initiatives, including code reviews.
Lead container, API, and web application security initiatives, including code reviews.
NEWPREMIUM
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Skilled in cloud technologies (Azure, GCP, or AWS), microservices, and API strategy
Skilled in cloud technologies (Azure, GCP, or AWS), microservices, and API strategy
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Locations
- The City, City (EC4)
- Birmingham Business Park
- Southwark
- Charing Cross
- Datchet Common
- Euston
- The City, City (EC2)
- The City, City (EC3)
- Canary Wharf
- Mayfair
- City of London
- Birmingham
- Reading
- Central London
- West End
- Cambridge
- South East London
- Milton Keynes
- Northampton
- South West London
- London
- Berkshire
- West Midlands
- Northamptonshire
- Cambridgeshire
- Oxfordshire
- Buckinghamshire
- Warwickshire
- Bedfordshire
- Gloucestershire
- South East
- Midlands
- East Midlands
- East Anglia
- South West