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92 Permanent API jobs in West Fields, South West London + 20 miles
263 exact matches jobs are outside your preferred location
Were a specialist financial technology company transforming B2B credit (website) * Were backed by top European and American VCs including Dawn Capital, Octopus Ventures, Talis and Expa * Founded in 2020, we are licensed and operating across the UK, Europe, US and Canada with offices in London, New York and Dallas * Since our commercial launch in March 2022, we are already serving some of the worlds largest companies, providing them with superior credit protection and innovative risk management technology - Were looking for a Senior Engineer with great general skills to join our first-class technical team. An ideal candidate thrives on solving complex problems and is eager to shape how we build and apply AI and large language models within our products. Youll be deeply involved in technical decisions, architecture and best practices, while contributing directly to the
Were a specialist financial technology company transforming B2B credit (website) * Were backed by top European and American VCs including Dawn Capital, Octopus Ventures, Talis and Expa * Founded in 2020, we are licensed and operating across the UK, Europe, US and Canada with offices in London, New York and Dallas * Since our commercial launch in March 2022, we are already serving some of the worlds largest companies, providing them with superior credit protection and innovative risk management technology - Were looking for a Senior Engineer with great general skills to join our first-class technical team. An ideal candidate thrives on solving complex problems and is eager to shape how we build and apply AI and large language models within our products. Youll be deeply involved in technical decisions, architecture and best practices, while contributing directly to the
About Workato - Workato transforms technology complexity into business opportunity. As the leader in enterprise orchestration, Workato helps businesses globally streamline operations by connecting data, processes, applications, and experiences. Its AI-powered platform enables teams to navigate complex workflows in real-time, driving efficiency and agility. Trusted by a community of 400,000 global customers, Workato empowers organizations of every size to unlock new value and lead in today's fast-changing world. Why join us? Ultimately, Workato believes in fostering a flexible, trust-oriented culture that empowers everyone to take full ownership of their roles . We are driven by innovation and looking for team players who want to actively build our company. But, we also believe in balancing productivity with self-care .
About Workato - Workato transforms technology complexity into business opportunity. As the leader in enterprise orchestration, Workato helps businesses globally streamline operations by connecting data, processes, applications, and experiences. Its AI-powered platform enables teams to navigate complex workflows in real-time, driving efficiency and agility. Trusted by a community of 400,000 global customers, Workato empowers organizations of every size to unlock new value and lead in today's fast-changing world. Why join us? Ultimately, Workato believes in fostering a flexible, trust-oriented culture that empowers everyone to take full ownership of their roles . We are driven by innovation and looking for team players who want to actively build our company. But, we also believe in balancing productivity with self-care .
This is a technical role within the Telegraph Data team. Working closely with a cross functional team of Data Engineers, Analysts and Scientists, youll be an integral part of the Data Engineering chapter - driving evolution of the data architecture, and optimising business processes. Additionally, alongside senior members, youll take part in shaping the team across aspects such as technology and product. Youll be part of the team that heads development of data platforms, with reliability, scalability and performance in mind. Along with other members of the Data Engineering team, you will help to enable real-time streaming capabilities. Youll be working with the wider business in order to improve the development of data processing procedures, database structures and of performance to meet business requirements.
This is a technical role within the Telegraph Data team. Working closely with a cross functional team of Data Engineers, Analysts and Scientists, youll be an integral part of the Data Engineering chapter - driving evolution of the data architecture, and optimising business processes. Additionally, alongside senior members, youll take part in shaping the team across aspects such as technology and product. Youll be part of the team that heads development of data platforms, with reliability, scalability and performance in mind. Along with other members of the Data Engineering team, you will help to enable real-time streaming capabilities. Youll be working with the wider business in order to improve the development of data processing procedures, database structures and of performance to meet business requirements.
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.
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.
Dynamics 365 Customer Service, Dynamics 365 Web API
Dynamics 365 Customer Service, Dynamics 365 Web API
Familiarity with API testing and integration diagnostics
Familiarity with API testing and integration diagnostics
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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.
Conduct UI and API testing.
Conduct UI and API testing.
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.
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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Join NVIDIA's DGX Cloud Kubernetes API Services team and be at the forefront of building GPU-accelerated Kubernetes clusters supporting NVIDIA AI, robotics, and scientific computing projects. As an API Services Software Engineer, you will work across the stack with partner teams to bring NVIDIA's GPUs to life in a cloud or on-prem environment, ensuring end-to-end performance across compute, storage, and networking. An API Services engineer is above all responsible for ensuring a good customer and developer experience on the DGX Cloud Kubernetes Platform, working with our Runtime and Cluster Architecture teams and more to be the voice of the customer. We serve both customers looking to access their GPU compute via Kubernetes for whatever workloads they wish, as well as developers looking to use our API
Join NVIDIA's DGX Cloud Kubernetes API Services team and be at the forefront of building GPU-accelerated Kubernetes clusters supporting NVIDIA AI, robotics, and scientific computing projects. As an API Services Software Engineer, you will work across the stack with partner teams to bring NVIDIA's GPUs to life in a cloud or on-prem environment, ensuring end-to-end performance across compute, storage, and networking. An API Services engineer is above all responsible for ensuring a good customer and developer experience on the DGX Cloud Kubernetes Platform, working with our Runtime and Cluster Architecture teams and more to be the voice of the customer. We serve both customers looking to access their GPU compute via Kubernetes for whatever workloads they wish, as well as developers looking to use our API
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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.
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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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Skilled in cloud technologies (Azure, GCP, or AWS), microservices, and API strategy
Skilled in cloud technologies (Azure, GCP, or AWS), microservices, and API strategy
FEATURED
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Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds, people cross borders, energy become smarter and much more. More than 30,000 organizations already rely on us to verify the identities of people and things, grant access to digital services, analyze vast quantities of information and encrypt data to make the connected world more secure. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer.
Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds, people cross borders, energy become smarter and much more. More than 30,000 organizations already rely on us to verify the identities of people and things, grant access to digital services, analyze vast quantities of information and encrypt data to make the connected world more secure. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer.
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Design, build and maintain data-intensive web applications and API-driven systems
Design, build and maintain data-intensive web applications and API-driven systems
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Code quality and API-First principles are at the heart of all our development. * Deliver high efficiency, high availability, concurrent and fault tolerant software systems using API-First principles. * An interest in setting strategy and direction, backed by real-work experience, ideally in an API-First setting. * Experience designing, building, and deploying scalable micro-services using API-First principles using at least one of REST/gRPC. * Strong understanding of RESTful API design principles and best practices. * Experience with API authentication and authorization mechanisms (e.g., OAuth, JWT). * Experience with API gateway technologies (e.g., Apigee, Kong) is beneficial.
Code quality and API-First principles are at the heart of all our development. * Deliver high efficiency, high availability, concurrent and fault tolerant software systems using API-First principles. * An interest in setting strategy and direction, backed by real-work experience, ideally in an API-First setting. * Experience designing, building, and deploying scalable micro-services using API-First principles using at least one of REST/gRPC. * Strong understanding of RESTful API design principles and best practices. * Experience with API authentication and authorization mechanisms (e.g., OAuth, JWT). * Experience with API gateway technologies (e.g., Apigee, Kong) is beneficial.
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Strong technical skills: HTML, CSS, basic JavaScript, API integrations, Workato and troubleshooting.
Strong technical skills: HTML, CSS, basic JavaScript, API integrations, Workato and troubleshooting.
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Related Jobs
Locations
- Southwark
- The City, City (EC3)
- The City, City (EC4)
- West Fields
- Charing Cross
- Datchet Common
- Euston
- The City, City (EC2)
- Canary Wharf
- High Brooms
- City of London
- Reading
- South East London
- Central London
- West End
- Milton Keynes
- South West London
- Cambridge
- East London
- Newbury
- London
- Berkshire
- Surrey
- Buckinghamshire
- Oxfordshire
- Cambridgeshire
- Bedfordshire
- Hampshire
- Hertfordshire
- Kent
- South East
- East Anglia