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15 Permanent API jobs in High Wycombe + 20 miles
206 exact matches jobs are outside your preferred location
Engineering London, United Kingdom - Apply - Description - Position at RetailMeNot - The Opportunity - We're looking for a Test Engineer to work as part of our Engineering team in London. You will be joining a team of 25+ engineers in the UK across web, mobile and data, within a global team of 50+ engineers. As a Test Engineer you will be ensuring features are tested in an automated fashion to ensure maximum coverage to give our users the best possible experience. You know how testing fits within an agile environment and have an excellent attention to detail and are passionate about quality. Your role will form part of our full stack agile teams collaborating with Product, UI and Backend engineers. * Maintaining and developing automated test suites, aiming for constant improvement * Preventing bugs and issues by thinking of relevant scenarios that can help meet the va
Engineering London, United Kingdom - Apply - Description - Position at RetailMeNot - The Opportunity - We're looking for a Test Engineer to work as part of our Engineering team in London. You will be joining a team of 25+ engineers in the UK across web, mobile and data, within a global team of 50+ engineers. As a Test Engineer you will be ensuring features are tested in an automated fashion to ensure maximum coverage to give our users the best possible experience. You know how testing fits within an agile environment and have an excellent attention to detail and are passionate about quality. Your role will form part of our full stack agile teams collaborating with Product, UI and Backend engineers. * Maintaining and developing automated test suites, aiming for constant improvement * Preventing bugs and issues by thinking of relevant scenarios that can help meet the va
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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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Join Tradewebs European Product Implementation team and play a key role in integrating new trading functionalities and protocols across our industry-leading electronic trading and regulatory reporting platforms. Serving clients in over 65 countries who collectively trade more than $2.5 trillion daily, Tradeweb is at the forefront of electronic markets and this role directly contributes to that growth. As a Product Implementation professional, youll work closely with liquidity providers to deliver seamless deployments, ensuring they are fully enabled on Tradewebs platforms. This is a critical, client-facing role that requires strong communication skills, sound judgment under pressure, and a problem-solving mindset. Well provide the training, support, and collaborative environment to help you thrive. Key Responsibilities
Join Tradewebs European Product Implementation team and play a key role in integrating new trading functionalities and protocols across our industry-leading electronic trading and regulatory reporting platforms. Serving clients in over 65 countries who collectively trade more than $2.5 trillion daily, Tradeweb is at the forefront of electronic markets and this role directly contributes to that growth. As a Product Implementation professional, youll work closely with liquidity providers to deliver seamless deployments, ensuring they are fully enabled on Tradewebs platforms. This is a critical, client-facing role that requires strong communication skills, sound judgment under pressure, and a problem-solving mindset. Well provide the training, support, and collaborative environment to help you thrive. Key Responsibilities
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Join Tradewebs European Product Implementation team and play a key role in integrating new trading functionalities and protocols across our industry-leading electronic trading and regulatory reporting platforms. Serving clients in over 65 countries who collectively trade more than $2.5 trillion daily, Tradeweb is at the forefront of electronic markets and this role directly contributes to that growth. As a Product Implementation professional, youll work closely with liquidity providers to deliver seamless deployments, ensuring they are fully enabled on Tradewebs platforms. This is a critical, client-facing role that requires strong communication skills, sound judgment under pressure, and a problem-solving mindset. Well provide the training, support, and collaborative environment to help you thrive. Key Responsibilities
Join Tradewebs European Product Implementation team and play a key role in integrating new trading functionalities and protocols across our industry-leading electronic trading and regulatory reporting platforms. Serving clients in over 65 countries who collectively trade more than $2.5 trillion daily, Tradeweb is at the forefront of electronic markets and this role directly contributes to that growth. As a Product Implementation professional, youll work closely with liquidity providers to deliver seamless deployments, ensuring they are fully enabled on Tradewebs platforms. This is a critical, client-facing role that requires strong communication skills, sound judgment under pressure, and a problem-solving mindset. Well provide the training, support, and collaborative environment to help you thrive. Key Responsibilities
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Knowledge of web API's, SOAP, REST architecture
Knowledge of web API's, SOAP, REST architecture
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Strong background in C# / .NET development (API design, backend systems).
Strong background in C# / .NET development (API design, backend systems).
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Familiarity with API testing and integration diagnostics
Familiarity with API testing and integration diagnostics
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Implement configuration changes (SSO, MFA, Lifecycle Management, API Access Management, etc.) in client environments. o API Access Management
Implement configuration changes (SSO, MFA, Lifecycle Management, API Access Management, etc.) in client environments. o API Access Management
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Extensive ability to read and understand and compile technical documentation (API documentation, ERD, functional specifications etc).
Extensive ability to read and understand and compile technical documentation (API documentation, ERD, functional specifications etc).
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Responsibilities include understanding the client's world and use cases, managing requirements, platform training and configuration, dashboard creation, API enablement, partner workspace management (Newsletters, Reports), and troubleshooting. * Configure and optimise the Signal platform (dashboards, newsletters, reports, partner workspaces, API setups).
Responsibilities include understanding the client's world and use cases, managing requirements, platform training and configuration, dashboard creation, API enablement, partner workspace management (Newsletters, Reports), and troubleshooting. * Configure and optimise the Signal platform (dashboards, newsletters, reports, partner workspaces, API setups).
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Large-scale data processing; data modeling; holistic, intent-based API design
Large-scale data processing; data modeling; holistic, intent-based API design
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The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
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Securing and managing APIs using API Manager. * Managing the API development lifecycle from design to governance and management.
Securing and managing APIs using API Manager. * Managing the API development lifecycle from design to governance and management.
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Through our platform a merchant can connect via a simple API connection to the world's payment ecosystem, increasing conversion at lower cost and satisfying their entire payments needs.
Through our platform a merchant can connect via a simple API connection to the world's payment ecosystem, increasing conversion at lower cost and satisfying their entire payments needs.
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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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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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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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Expertise in JavaScript and/or TypeScript and modern React, including Hooks, Context API, Server and Client Components
Expertise in JavaScript and/or TypeScript and modern React, including Hooks, Context API, Server and Client Components
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Expertise in JavaScript and/or TypeScript and modern React, including Hooks, Context API, Server and Client Components
Expertise in JavaScript and/or TypeScript and modern React, including Hooks, Context API, Server and Client Components
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Extensive Salesforce development experience (including Apex triggers, classes, asynchronous Apex, API Integrations, Platform Events, LWCs and Sites)
Extensive Salesforce development experience (including Apex triggers, classes, asynchronous Apex, API Integrations, Platform Events, LWCs and Sites)
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Expertise in Salesforce deployment strategies, including change sets, Salesforce DX, and metadata API. * Experience in Salesforce API integration (REST, SOAP, Platform Events).
Expertise in Salesforce deployment strategies, including change sets, Salesforce DX, and metadata API. * Experience in Salesforce API integration (REST, SOAP, Platform Events).
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AWS for underlying infrastructure (Aurora, Redis, Dynamo, S3, SNS, SQS, CloudFront, API Gateway, etc.)
AWS for underlying infrastructure (Aurora, Redis, Dynamo, S3, SNS, SQS, CloudFront, API Gateway, etc.)
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We serve millions of API requests with a 99.5% availability SLA. * Familiarity with API design and experience with at least one web framework
We serve millions of API requests with a 99.5% availability SLA. * Familiarity with API design and experience with at least one web framework
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Influence API and BFF design to optimise clientserver contracts and reduce complexity at the edges.
Influence API and BFF design to optimise clientserver contracts and reduce complexity at the edges.
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