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272 Permanent API jobs in South East + 20 miles
Good understanding of OpenAPI / API documentation.
Good understanding of OpenAPI / API documentation.
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API & events fluent: Youre comfortable with cloud infrastructure and event-driven designs.
API & events fluent: Youre comfortable with cloud infrastructure and event-driven designs.
Delivering security automation (scripting, API integration and via the Power Platform) * Experience of using and configuring API integrations
Delivering security automation (scripting, API integration and via the Power Platform) * Experience of using and configuring API integrations
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Strong knowledge in C++ Strong understanding of API design
Strong knowledge in C++ Strong understanding of API design
Python, API frameworks (Flask, FastAPI), package managers (poetry, uv)
Python, API frameworks (Flask, FastAPI), package managers (poetry, uv)
The ideal candidate has prior experience solving complex forms of scaled abuse, building sophisticated protections across multiple parts of OpenAIs product suite (ChatGPT, API, Sora).
The ideal candidate has prior experience solving complex forms of scaled abuse, building sophisticated protections across multiple parts of OpenAIs product suite (ChatGPT, API, Sora).
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APIs: Understanding of RESTful API design and development.
APIs: Understanding of RESTful API design and development.
This role is part of our Digital Platform Services team, who are responsible for delivering central services to the divisions in an API first way by utilising AI and new ways of working.
This role is part of our Digital Platform Services team, who are responsible for delivering central services to the divisions in an API first way by utilising AI and new ways of working.
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Understanding of API and backend services development in .Net
Understanding of API and backend services development in .Net
Must have experience with .NET and C#, SDLC (Software Development Life Cycle), Database (SQL, Azure Data Store) and API/REST
Must have experience with .NET and C#, SDLC (Software Development Life Cycle), Database (SQL, Azure Data Store) and API/REST
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Strong understanding of cloud native architectures, SaaS solutions (Salesforce, SAP, Dynamics CRM,ServiceNow, etc..), cybersecurity posture fundamentals, API ecosystems and legacy on-premise enterprise architectures
Strong understanding of cloud native architectures, SaaS solutions (Salesforce, SAP, Dynamics CRM,ServiceNow, etc..), cybersecurity posture fundamentals, API ecosystems and legacy on-premise enterprise architectures
You understand the patterns (e.g., webhooks, polling, message queues, event-driven architectures), the challenges of API versioning, and the principles of building a scalable, multi-tenant integrations platform. * Systems Thinking: Strong understanding of modern backend building blocks: API best practices; message queues (RabbitMQ, SNS/SQS or similar); relational data stores (PostgreSQL or similar); and cloud services (AWS or similar).
You understand the patterns (e.g., webhooks, polling, message queues, event-driven architectures), the challenges of API versioning, and the principles of building a scalable, multi-tenant integrations platform. * Systems Thinking: Strong understanding of modern backend building blocks: API best practices; message queues (RabbitMQ, SNS/SQS or similar); relational data stores (PostgreSQL or similar); and cloud services (AWS or similar).
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Implementation of Salesforce Flows to a high standard (e.g. screen flows, triggered flows, API flows)
Implementation of Salesforce Flows to a high standard (e.g. screen flows, triggered flows, API flows)
Delivery of API enhancements to support new client features
Delivery of API enhancements to support new client features
This role is part of our Digital Platform Services team, who are responsible for delivering central services to the divisions in an API first way by utilising AI to pioneer of AI-first development practices. * Design and implement scalable microservices with API-first mindset API-First & Microservices Excellence * Create comprehensive API documentation and developer guides API-First & Microservices Architecture * Deep knowledge of API design principles and RESTful/GraphQL patterns * Understanding of service mesh, API gateways, and inter-service communication * API design and documentation tools (Swagger/OpenAPI, Postman)
This role is part of our Digital Platform Services team, who are responsible for delivering central services to the divisions in an API first way by utilising AI to pioneer of AI-first development practices. * Design and implement scalable microservices with API-first mindset API-First & Microservices Excellence * Create comprehensive API documentation and developer guides API-First & Microservices Architecture * Deep knowledge of API design principles and RESTful/GraphQL patterns * Understanding of service mesh, API gateways, and inter-service communication * API design and documentation tools (Swagger/OpenAPI, Postman)
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The Developer Platform team supports 75B+ API calls and a growing marketplace with 300+ partner applications.
The Developer Platform team supports 75B+ API calls and a growing marketplace with 300+ partner applications.
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Work closely with IT teams to support data integration initiatives, with our customers & brokers to leverage our API capabilities to streamline processes and enable seamless data exchange across platforms.
Work closely with IT teams to support data integration initiatives, with our customers & brokers to leverage our API capabilities to streamline processes and enable seamless data exchange across platforms.
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Lead Transformation: Transition from monolithic applications to an API-first, modular platform strategy.
Lead Transformation: Transition from monolithic applications to an API-first, modular platform strategy.
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nCino offers exciting career opportunities for individuals who want to join the worldwide leader in cloud banking. As a PreSales Solution Architect you will use your SaaS & Salesforce expertise and work closely with banks and financial institutions to innovate financial services. You will lead the solutioning for business challenges and present and demonstrate the value of the nCino solution. Responsibilities * Be a Trusted Advisor to prospects and clients by leading presales conversations, * presentations and solutioning around nCino-specific architectural design * Be a Thought Leader and provide guidance as it relates to SaaS, cloud infrastructure and AI, especially in relation to financial services * Be a Solution Consultant and lead deep-dive discovery sessions with prospects to identify target solution architecture and advise on best practices to meet functional
nCino offers exciting career opportunities for individuals who want to join the worldwide leader in cloud banking. As a PreSales Solution Architect you will use your SaaS & Salesforce expertise and work closely with banks and financial institutions to innovate financial services. You will lead the solutioning for business challenges and present and demonstrate the value of the nCino solution. Responsibilities * Be a Trusted Advisor to prospects and clients by leading presales conversations, * presentations and solutioning around nCino-specific architectural design * Be a Thought Leader and provide guidance as it relates to SaaS, cloud infrastructure and AI, especially in relation to financial services * Be a Solution Consultant and lead deep-dive discovery sessions with prospects to identify target solution architecture and advise on best practices to meet functional
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
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WHAT MAKES US, US Join some of the most innovative thinkers in FinTech as we lead the evolution of financial technology. If you are an innovative, curious, collaborative person who embraces challenges and wants to grow, learn, and pursue outcomes with our prestigious financial clients, say Hello to SimCorp! At its foundation, SimCorp is guided by our values caring, customer success-driven, collaborative, curious, and courageous. Our people-centered organization focuses on skills development, relationship building, and client success. We take pride in cultivating an environment where all team members can grow, feel heard, valued, and empowered. If you like what were saying, keep reading! WHY THIS ROLE IS IMPORTANT FOR US Are you interested in joining a collaborative team in a great office environment in an award-winning organization?
WHAT MAKES US, US Join some of the most innovative thinkers in FinTech as we lead the evolution of financial technology. If you are an innovative, curious, collaborative person who embraces challenges and wants to grow, learn, and pursue outcomes with our prestigious financial clients, say Hello to SimCorp! At its foundation, SimCorp is guided by our values caring, customer success-driven, collaborative, curious, and courageous. Our people-centered organization focuses on skills development, relationship building, and client success. We take pride in cultivating an environment where all team members can grow, feel heard, valued, and empowered. If you like what were saying, keep reading! WHY THIS ROLE IS IMPORTANT FOR US Are you interested in joining a collaborative team in a great office environment in an award-winning organization?
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Purpose of Position - Your location: Any country where Awin has an office. You will be able to work from home most of the time if you are based in one of these countries. As a Junior CRM Engineer you will be part of the project team involved in the implementation of Salesforce new features (primarily Service Cloud and potentially Sales Cloud) at Awin. You will also be joining a team of CRM engineers and specialists reporting to the CRM Engineering Manager within CRM department. In this position, you will also be responsible for the day-to-day user management, maintenance and continuous roll out of Salesforce features. Key Tasks * Participate to the CRM team sprints to implement features supporting the defined roadmap * Work closely with CRM Business Analyst and/or CRM Architects to understand requirements and deliver best of class solutions
Purpose of Position - Your location: Any country where Awin has an office. You will be able to work from home most of the time if you are based in one of these countries. As a Junior CRM Engineer you will be part of the project team involved in the implementation of Salesforce new features (primarily Service Cloud and potentially Sales Cloud) at Awin. You will also be joining a team of CRM engineers and specialists reporting to the CRM Engineering Manager within CRM department. In this position, you will also be responsible for the day-to-day user management, maintenance and continuous roll out of Salesforce features. Key Tasks * Participate to the CRM team sprints to implement features supporting the defined roadmap * Work closely with CRM Business Analyst and/or CRM Architects to understand requirements and deliver best of class solutions
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The Role - Joining Moderna offers the unique opportunity to be part of a pioneering team that's revolutionizing medicine through mRNA technology, with a diverse pipeline of development programs across various diseases. As an employee, you'll be part of a continually growing organization, working alongside exceptional colleagues and strategic partners worldwide, contributing to global health initiatives. Moderna's commitment to advancing the technological frontier of mRNA medicines ensures a challenging and rewarding career experience, with the potential to make a significant impact on patients' lives worldwide. Moderna is solidifying its presence in London, a global hub for scientific research and innovation. Our London office focuses on commercial operations, ensuring the delivery of our revolutionary products to the UK market.
The Role - Joining Moderna offers the unique opportunity to be part of a pioneering team that's revolutionizing medicine through mRNA technology, with a diverse pipeline of development programs across various diseases. As an employee, you'll be part of a continually growing organization, working alongside exceptional colleagues and strategic partners worldwide, contributing to global health initiatives. Moderna's commitment to advancing the technological frontier of mRNA medicines ensures a challenging and rewarding career experience, with the potential to make a significant impact on patients' lives worldwide. Moderna is solidifying its presence in London, a global hub for scientific research and innovation. Our London office focuses on commercial operations, ensuring the delivery of our revolutionary products to the UK market.
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About The Role - FDM is a global business and technology consultancy seeking an Automation Tester to work for our client within the retail sector. This is initially a 6 month contract with the potential to extend and will be a hybrid role based in London. Our client is seeking an Automation Tester to play a pivotal role in driving real change in their processes to ensure they can release reliable code on a regular basis. There will be a core focus on reducing bugs post-release, rapidly increasing % test coverage and reducing the time it takes to ship new functionality to the customer. This is a great opportunity to define and deliver on a test strategy that seeks to progress their automation testing capabilities, while supporting SCRUM sprint ticket delivery. As a result, the successful candidate would need to be able to demonstrate confidence in delivering multiple .
About The Role - FDM is a global business and technology consultancy seeking an Automation Tester to work for our client within the retail sector. This is initially a 6 month contract with the potential to extend and will be a hybrid role based in London. Our client is seeking an Automation Tester to play a pivotal role in driving real change in their processes to ensure they can release reliable code on a regular basis. There will be a core focus on reducing bugs post-release, rapidly increasing % test coverage and reducing the time it takes to ship new functionality to the customer. This is a great opportunity to define and deliver on a test strategy that seeks to progress their automation testing capabilities, while supporting SCRUM sprint ticket delivery. As a result, the successful candidate would need to be able to demonstrate confidence in delivering multiple .
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Biglight is an experience design agency that combines customer insight, UX and design with constant innovation and experimentation to help leading brands create remarkable customer experiences. Were expanding our capabilities into component library and design system development for enterprise clients. This role focuses on building and maintaining a sophisticated UI component library that powers both e-commerce and B2B web applications for a major UK brand. Youll be working with modern frontend technologies (Preact, TailwindCSS, and Storybook)to create reusable, accessible and pixel-perfect components that form the foundation of our client's digital experiences. The library includes 70+ components, 200+ documented stories and supports multiple themes with automated CSS generation. This is a hands-on development role where youll own components end-to-end: from ...
Biglight is an experience design agency that combines customer insight, UX and design with constant innovation and experimentation to help leading brands create remarkable customer experiences. Were expanding our capabilities into component library and design system development for enterprise clients. This role focuses on building and maintaining a sophisticated UI component library that powers both e-commerce and B2B web applications for a major UK brand. Youll be working with modern frontend technologies (Preact, TailwindCSS, and Storybook)to create reusable, accessible and pixel-perfect components that form the foundation of our client's digital experiences. The library includes 70+ components, 200+ documented stories and supports multiple themes with automated CSS generation. This is a hands-on development role where youll own components end-to-end: from ...
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Related Jobs
Locations
- London
- Surrey
- City of London
- South West London
- Central London
- South East London
- Tunbridge Wells
- East London
- Dorking
- West End
- Scotland
- Birmingham
- Reading
- Hampshire
- Oxford
- Southampton
- Staffordshire
- Slough
- West Sussex
- East Anglia
- County Antrim
- Oxfordshire
- Wales
- Dundee
- Midlothian
- East Sussex
- Chester
- Poole
- Cochrane Park
- Derby
- Yorkshire
- Bristol
- Greater Manchester
- Cheshire
- Gloucestershire
- Hertfordshire
- West Yorkshire
- Glasgow
- York
- Edinburgh
- Leeds
- Colchester
- North West
- Berkshire
- Merseyside
- Lancashire
- Milton Keynes
- Buckinghamshire
- West Midlands
- Abingdon