1 to 25 of 105 API Development Jobs in the UK

Full Stack Lead Engineer London - Hybrid Up to £85k React, TypeScript, NodeJS, AWS Benefits: Health Insurance Life Insurance Continuous Professional Development, Certifications Cycle to work And more I am looking for a Full Stack Lead Engineer for a client in London. You should have extensive experience with React, TypeScript, NodeJS and AWS. You will be taking the lead in … for a Full Stack Lead Engineer with the below skills to continue their success and growth. Essential skills: React, NodeJS, TypeScript AWS - Lambda, Cognito, S3, SQS, Eventbridge, Gateway Restful API development Event Driven Architecture, Event Systems Messaging Queues WebSockets SQL, NoSQL DevOps - CI/CD, Docker, GitHub. Desirable skills: WebAssembly IaC AWS Cloud Development Kit Integration testing … is an urgent vacancy so if you are interested then please apply quoting reference 102889. React | TypeScript | NodeJS | AWS | Event driven Architecture | CDK | Lambda | Cognito | S3 | SQS | Eventbridge | Restful API | API | SQL | NoSQL | messaging queues | WebSockets | DevOps | CI/CD | GitHub | WebAssembly | Infrastructure as Code | React | TypeScript | NodeJS | AWS | Event driven Architecture | CDK | Lambda | Cognito | S3 | SQS | Eventbridge More ❯

Senior Software Engineer/Software Developer who has proven software application development experience across the stack C#, ASP, .NET, Blazor, API Development, Microservices, Containers and Deployment Pipelines is required for a well-established company based in Bedford, Bedfordshire. TWO JOBS AVAILABLE WOULD YOU LIKE TO HELP SHAPE THE FUTURE OF THE COMPANYS TECHNOLOGY? If you can design … Will Apply JOB TYPE: Full-Time, Permanent JOB OVERVIEW We have a fantastic new job opportunity for a Senior Software Engineer/Software Developer who has proven software application development experience across the stack C#, ASP, .NET, Blazor, API Development, Microservices, Containers and Deployment Pipelines. Working as a Senior Software Engineer/Software Developer youll design and … ensuring technical concepts are understood by all stakeholders CANDIDATE REQUIREMENTS Proven experience with Azure cloud services (App Services, Functions, SQL Database), identity & access, and infrastructure as code Strong software development skills across the stack using C#, ASP .NET, Blazor, API development, microservices, containers, and deployment pipelines Solid understanding of secure coding practices and compliance in SaaS environments More ❯

Senior Software Engineer/Software Developer who has proven software application development experience across the stack C#, ASP, .NET, Blazor, API Development, Microservices, Containers and Deployment Pipelines is required for a well-established company based in Bedford, Bedfordshire. TWO JOBS AVAILABLE WOULD YOU LIKE TO HELP SHAPE THE FUTURE OF THE COMPANY’S TECHNOLOGY? If you can … Will Apply JOB TYPE: Full-Time, Permanent JOB OVERVIEW We have a fantastic new job opportunity for a Senior Software Engineer/Software Developer who has proven software application development experience across the stack C#, ASP, .NET, Blazor, API Development, Microservices, Containers and Deployment Pipelines. Working as a Senior Software Engineer/Software Developer you’ll design … ensuring technical concepts are understood by all stakeholders CANDIDATE REQUIREMENTS Proven experience with Azure cloud services (App Services, Functions, SQL Database), identity & access, and infrastructure as code Strong software development skills across the stack using C#, ASP .NET, Blazor, API development, microservices, containers, and deployment pipelines Solid understanding of secure coding practices and compliance in SaaS environments More ❯

driven solutions that transform digital marketing? Want a better work-life balance with our groundbreaking 4 day week model? We are seeking a Senior Backend Developer to support the development of our AI-driven marketing platform, with a strong focus on performance, scalability, and data pipeline architecture. This role is ideal for someone experienced in backend API development … founder of SkyScanner. Profits with Purpose - 10% of profits donated to 1moreChild orphanage yearly Markets: Marketing & eCommerce Agencies. eCommerce retailers. Your Expertise: Highly experienced Developer with experience of backend API development and working with modern data infrastructure. At ASK BOSCO® , part of Modo25, we're building a smarter, faster, people-first marketing tech business. We're entering a … of key technical decisions, mentor a talented team of developers, and help build a culture of engineering excellence. What You'll Be Doing: You'll support the design and development of scalable Python applications that power our AI-driven marketing platform. From architecting robust systems to guiding our technical roadmap, you'll work cross-functionally to turn strategy into More ❯

ambitious individuals who are driven to make a real difference. Our "make it happen" culture empowers you to take ownership of your career and accelerate your personal and professional development from day one. With over 700 CUBERs across 19 countries spanning EMEA, the Americas, and APAC, we operate as one team with a shared mission to transform regulatory compliance. … in AI research and engineering in developing impactful solutions that are reshaping the world of regulatory compliance. Role Mission: To drive the strategic vision and execution of CUBE's API products, ensuring our APIs are the gold standard for integration enabling exceptional user experiences with minimal lift. The Role: Our APIs are the critical bridge between CUBE's powerful … Platform and users' existing tech stack. As a Senior Product Manager for API, you'll own the entire API product lifecycle-from strategic vision through to developer adoption and customer success. You'll be responsible for transforming complex integration problems into intuitive, scalable API solutions that enable financial institutions to integrate CUBE seamlessly. This is a hands More ❯

latest trends in Audit delivery. Why Join KPMG As a Senior Python Developer As a Senior Python Developer, you will play a hands-on role in the design and development of secure, scalable, and high-performance backend services that drive key components of the audit technology landscape. You will develop integrations with internal and external APIs, build cloud-native … to power next-generation applications. You’ll collaborate closely with engineering peers, architects, and product owners to bring business ideas to life while contributing to the overall architecture and development best practices of the team. You’ll also support the deployment and operationalization of code using CI/CD pipelines and infrastructure-as-code practices. What will you be … doing Backend Development: Develop, test, and maintain Python-based backend services, leveraging asynchronous programming and multithreading to optimize performance and scalability where appropriate. API Integration: Develop, document, and consume RESTful APIs, including integration with Microsoft Graph APIs and other third-party systems. Security Compliance: Implement robust authentication and authorization mechanisms and enforce security best practices to safeguard API More ❯

latest trends in Audit delivery. Why Join KPMG As a Senior Python Developer As a Senior Python Developer, you will play a hands-on role in the design and development of secure, scalable, and high-performance backend services that drive key components of the audit technology landscape. You will develop integrations with internal and external APIs, build cloud-native … to power next-generation applications. You’ll collaborate closely with engineering peers, architects, and product owners to bring business ideas to life while contributing to the overall architecture and development best practices of the team. You’ll also support the deployment and operationalization of code using CI/CD pipelines and infrastructure-as-code practices. What will you be … doing Backend Development: Develop, test, and maintain Python-based backend services, leveraging asynchronous programming and multithreading to optimize performance and scalability where appropriate. API Integration: Develop, document, and consume RESTful APIs, including integration with Microsoft Graph APIs and other third-party systems. Security Compliance: Implement robust authentication and authorization mechanisms and enforce security best practices to safeguard API More ❯

latest trends in Audit delivery. Why Join KPMG As a Senior Python Developer As a Senior Python Developer, you will play a hands-on role in the design and development of secure, scalable, and high-performance backend services that drive key components of the audit technology landscape. You will develop integrations with internal and external APIs, build cloud-native … to power next-generation applications. You’ll collaborate closely with engineering peers, architects, and product owners to bring business ideas to life while contributing to the overall architecture and development best practices of the team. You’ll also support the deployment and operationalization of code using CI/CD pipelines and infrastructure-as-code practices. What will you be … doing Backend Development: Develop, test, and maintain Python-based backend services, leveraging asynchronous programming and multithreading to optimize performance and scalability where appropriate. API Integration: Develop, document, and consume RESTful APIs, including integration with Microsoft Graph APIs and other third-party systems. Security Compliance: Implement robust authentication and authorization mechanisms and enforce security best practices to safeguard API More ❯

latest trends in Audit delivery. Why Join KPMG As a Senior Python Developer As a Senior Python Developer, you will play a hands-on role in the design and development of secure, scalable, and high-performance backend services that drive key components of the audit technology landscape. You will develop integrations with internal and external APIs, build cloud-native … to power next-generation applications. You’ll collaborate closely with engineering peers, architects, and product owners to bring business ideas to life while contributing to the overall architecture and development best practices of the team. You’ll also support the deployment and operationalization of code using CI/CD pipelines and infrastructure-as-code practices. What will you be … doing Backend Development: Develop, test, and maintain Python-based backend services, leveraging asynchronous programming and multithreading to optimize performance and scalability where appropriate. API Integration: Develop, document, and consume RESTful APIs, including integration with Microsoft Graph APIs and other third-party systems. Security Compliance: Implement robust authentication and authorization mechanisms and enforce security best practices to safeguard API More ❯

latest trends in Audit delivery. Why Join KPMG As a Senior Python Developer As a Senior Python Developer, you will play a hands-on role in the design and development of secure, scalable, and high-performance backend services that drive key components of the audit technology landscape. You will develop integrations with internal and external APIs, build cloud-native … to power next-generation applications. You’ll collaborate closely with engineering peers, architects, and product owners to bring business ideas to life while contributing to the overall architecture and development best practices of the team. You’ll also support the deployment and operationalization of code using CI/CD pipelines and infrastructure-as-code practices. What will you be … doing Backend Development: Develop, test, and maintain Python-based backend services, leveraging asynchronous programming and multithreading to optimize performance and scalability where appropriate. API Integration: Develop, document, and consume RESTful APIs, including integration with Microsoft Graph APIs and other third-party systems. Security Compliance: Implement robust authentication and authorization mechanisms and enforce security best practices to safeguard API More ❯

DSS, and help build secure abstractions over APIs that interface with our clients. Responsibilities Maintain and expand our serverless card payment infrastructure built with TypeScript, Node.js, and AWS (Lambda, API Gateway, DynamoDB). Ensure continued PCI DSS compliance. Work with others to fix bugs, implement minimal new features, trace errors, and ensure security patches are applied in production and … quality and resilience. Requirements Strong hands-on experience with TypeScript and Node.js. Frontend familiarity is helpful (e.g. React). Proficiency with AWS services in a serverless context, especially CloudFront, API Gateway, Lambda, DynamoDB and CloudWatch. Commercial experience with Infrastructure-as-Code tools such as Terraform, SST, CDK or CloudFormation. Strong understanding of API development, RESTful design, and … secure authentication. Demonstrated knowledge of API security and OWASP Top 10 vulnerabilities. Experience with Docker, Linux, Git, and container-based environments. Hands-on development experience with PCI DSS, payment systems, or other regulated environments is essential Excellent communicator with a self-starter attitude and comfort working autonomously. Demonstrable expertise and understanding of API development/design More ❯

data-rich dashboards , and intuitive user experiences ? We're looking for a skilled Full-Stack Developer who thrives at the intersection of geospatial data, modern web technologies, and backend API development. ?? Tech Stack You'll Work With: Database: PostgreSQL + PostGIS Backend: Node.js, Python, .NET (or equivalent) API development Frontend: JavaScript, Mapbox GL JS, Leaflet, OpenLayers UX … and user experience for map-based applications Supporting deployment and version control using Azure DevOps ? What We're Looking For: Proven experience in front-end mapping libraries and backend API development Strong understanding of spatial data and geospatial queries Ability to work across the stack and communicate effectively with technical and non-technical stakeholders Experience with interactive data More ❯

building, and maintaining databases to ensure data is readily available, reliable, and efficient for various purposes, including data science and business intelligence. This will also include developing and maintaining API integrations with systems to extract and load data into the database. The role will also be responsible for designing, developing, and maintaining interactive Power BI dashboards using advanced SQL … security, and performance. Build and maintain ETL (Extract, Transform, Load) pipelines to automate the movement and transformation of data from multiple sources into a central database. Develop and maintain API integrations with business systems to ensure seamless, reliable, and timely data ingestion. Analyse, mine, and process internal data using datasets from business systems to deliver validated outputs. Ensure all … database querying, optimisation, and Power BI data modelling. Proficiency in Python for data manipulation, automation, and advanced analytics. Experience designing and implementing ETL processes and data pipelines. Experience with API development and integration for data ingestion. Ability to analyse, model, and interpret data, including identifying trends and patterns in complex datasets. Familiarity with programming principles to support automation More ❯

major integration project within a high-integrity engineering environment. Our client, a respected UK leader in mission-critical software and systems, is seeking a capable contractor to assist with API development and systems integration involving Oracle and internal platforms. This role requires a proactive engineer who can take ownership of specific, well-defined technical tasks. Key Skills Required … on experience with Atlassian tools (Jira, Confluence) Strong PowerShell scripting skills Solid knowledge of SQL Server or similar relational databases Experience working with or integrating Oracle systems Familiarity with API development and integration Ability to work independently and efficiently on scoped tasks UK nationality is essential due to project requirements Experience in regulated sectors is beneficial (e.G. Defence More ❯

Scrum ) and thrive in a fast-paced, dynamic setting. They should have a keen interest in emerging technologies , staying ahead of industry trends, and be committed to continuous skill development . A professional and approachable demeanor is key, as is the ability to champion the adoption of innovative technologies within the team. Experience Good knowledge of Microsoft development technologies Visual Studio 2022 onwards Strong C#/.NET experience Net/.Net Core Web API development experience API documentation generation tools Experience using IoC containers SQL Server experience Experience using Entity Framework OOAD skills and good understanding of Design Patterns and Practices Web services (SOAP and/or WCF) Unit testing/Test Driven Development Distributed WinForms systems development Desirable Familiarity with DevOps tools for managing work items and source control, with TFS experience being a plus. Alternatively, experience working in a source-controlled, continuous integration (CI) environment. Background in the finance or pensions sector, with an understanding of industry-specific requirements and practices. Proficient in SQL Server query optimisation, including performance tuning More ❯

Scrum ) and thrive in a fast-paced, dynamic setting. They should have a keen interest in emerging technologies , staying ahead of industry trends, and be committed to continuous skill development . A professional and approachable demeanor is key, as is the ability to champion the adoption of innovative technologies within the team. Experience Good knowledge of Microsoft development technologies Visual Studio 2022 onwards Strong C#/.NET experience Net/.Net Core Web API development experience API documentation generation tools Experience using IoC containers SQL Server experience Experience using Entity Framework OOAD skills and good understanding of Design Patterns and Practices Web services (SOAP and/or WCF) Unit testing/Test Driven Development Distributed WinForms systems development Desirable Familiarity with DevOps tools for managing work items and source control, with TFS experience being a plus. Alternatively, experience working in a source-controlled, continuous integration (CI) environment. Background in the finance or pensions sector, with an understanding of industry-specific requirements and practices. Proficient in SQL Server query optimisation, including performance tuning More ❯

They are now looking to recruit a Senior Solutions Architect to be based at the Company's Central London Offices. You will extensive and deep Expertise in following Application Development areas: " Expertise in application architecture using modern technologies such as cloud native development, 12 factor Apps, microservices, serverless, API management, Kafka, etc. " Deep knowledge of Microservices, Containers … REST APIs development, API Management tools (e.g. MuleSoft, Apigee), Kafka " Solution architect with broad expertise in wide range of digital technologies in areas of application platform development, web and mobile development, cloud, integration, security, etc. " Application dev experience with at least one of the cloud providers - Amazon AWS or MS Azure " Understanding of distributed computing paradigm … and exposure to building highly scalable systems. " Experience with platform modernization and cloud migration projects " Expertise in Agile development methodologies like TDD, BDD, Performance/Load testing etc. " DevOps experience - CI/CD, Test Automation, Containerization - tools and processes " Should be conversant with emerging technologies - chatbots, voice/conversational interfaces, RPA, Machine Learning, etc. " In-depth, hands-on experience More ❯

Are you an experienced .Net (C#) Developer, with some solid experience in API development , looking to take on your next Software Engineering role in a growing SaaS product company Keen to grow your technical skills around .Net 8/C#/API & MySQL development & look into new Generative AI/LLM dev' tools, too? If yes … you’d like to join a growing, recently invested in, actually bringing offshore, back onshore, UK Software company – we’d like to speak with you! Job title: .Net (C#) API Developer Location: Banbury, Oxfordshire. Hybrid working: 2 office days per week, 3 from home, flexible. Salary: ~£50K Basic + Benefits package. We can be somewhat flexible though - so please … team. Our desired "list of stuff" that you should demonstrate experience, below. But basically, if you have solid experience in .Net (C#) & solid experience in ASP.Net core WebAPI (RESTful API), then we'd like to hear from you! - C# and .NET Core. - ASP.NET Core MVC and Web API. - Extensive use of Entity Framework Core and LINQ for data access More ❯

Are you an experienced .Net (C#) Developer, with some solid experience in API development , looking to take on your next Software Engineering role in a growing SaaS product company ? Keen to grow your technical skills around .Net 8/C#/API & MySQL development & look into new Generative AI/LLM dev' tools, too? If yes … you’d like to join a growing, recently invested in, actually bringing offshore, back onshore, UK Software company – we’d like to speak with you! Job title: .Net (C#) API Developer Location: Banbury, Oxfordshire. Hybrid working: 2 office days per week, 3 from home, flexible. Salary: ~£50K Basic + Benefits package. We can be somewhat flexible though - so please … team. Our desired "list of stuff" that you should demonstrate experience, below. But basically, if you have solid experience in .Net (C#) & solid experience in ASP.Net core WebAPI (RESTful API), then we'd like to hear from you! - C# and .NET Core. - ASP.NET Core MVC and Web API. - Extensive use of Entity Framework Core and LINQ for data access More ❯

We are looking for a Senior/Lead Front-end JavaScript Developer to join our consulting client. We have multiple locations available In this role, you will lead the development of an impactful web application for a public sector programme, ensuring high performance, scalability, and maintainability. You will work closely with cross-functional teams to deliver engaging solutions that … HTML, CSS & JavaScript Collaborate with architects and other developers to design robust, scalable, and secure architectures for new projects and enhancements to existing systems. Lead and participate in agile development processes, including sprint planning, daily stand-ups, and retrospectives. Conduct thorough code reviews to ensure code quality, performance, and adherence to best practices. Continuously improve our teams' development … the GOV.UK Design System Familiarity with the GOV.UK CASA UI framework Experience with MongoDB and NoSQL variants writing robust and scalable queries and operations Experience with TypeScript and modern development tools and practices. Knowledge of Cloud-Native development on the AWS Platform (IAM, SQS, S3, Secrets Management, KMS). Familiarity with CI/CD pipelines and DevOps practices. More ❯

basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯

Axway API Developer + 6 month initial contract + Full remote + 650 to 690 per day + SC Cleared role Key Skills: + Axway API Development/Administration + SC Clearance Responsibilities Designing, developing and deploying of Axway policies and containers using Axway Policy Studio v7.7 Working with DevOps toolset for develop and maintain Automated Testing … and Code Deployment Provide Assistance to Axway support team to resolve technical issues Administrating the Axway Environment, using Axway Policy Studio, Axway API Manager, Cassandra and API Gateway for Deployment of Axway Patches, monitor capacity, providing service improvements Liaise with customers to define project requirements, document and design solutions Knowledge of: SFTP HTTPS SSL/TLS oAuth JSON More ❯

Axway API Developer + 6 month initial contract + Full remote + £650 to £690 per day + SC Cleared role Key Skills: + Axway API Development/Administration + SC Clearance Responsibilities Designing, developing and deploying of Axway policies and containers using Axway Policy Studio v7.7 Working with DevOps toolset for develop and maintain Automated Testing … and Code Deployment Provide Assistance to Axway support team to resolve technical issues Administrating the Axway Environment, using Axway Policy Studio, Axway API Manager, Cassandra and API Gateway for Deployment of Axway Patches, monitor capacity, providing service improvements Liaise with customers to define project requirements, document and design solutions Knowledge of: SFTP HTTPS SSL/TLS oAuth JSON More ❯

streamlines compliance, enhances conversion, and improves the overall student experience. How youll spend your day As a Full Stack Lead Engineer, you will be responsible for leading the design, development, and maintenance of scalable, high-performance applications across both frontend and backend systems. You will collaborate closely with product managers, designers, and other engineers to deliver features that create … enjoys solving complex technical challenges. Youll also be expected to actively explore, evaluate, and adopt the latest Generative AI tools and practices to enhance productivity, streamline workflows, and accelerate development across the engineering team. Lead full stack development using ReactJS, TypeScript, Node.js , and related technologies. Architect and implement robust, scalable, and secure APIs and web applications. Collaborate with … and enforce coding standards, best practices, and documentation. Identify and resolve complex performance, scalability, and reliability challenges. Contribute to DevOps processes (CI/CD, monitoring, infrastructure) and help optimize development pipelines. Participate in architecture discussions and influence the future direction of the platform. Investigate and adopt new technologies (e.g. WASM, serverless patterns) to continually improve the platform. What youll More ❯

Lead the design, enhancement, and build of our integrations with different payment networks as a pivotal figure within our VPC & Domestic Processing team in Payment Processing Actively participate in development projects, constructing, REST services API, and container-based services. Develop and maintain highly functional, secure, scalable, and resilient systems Prioritize and manage multiple demands and projects in a … the team, continuously challenging and pushing for team-wide growth and success. Regularly report progress, issues and solutions to upper management to keep them informed. Provide technical leadership to development team by participating in design, performing design reviews and code reviews. Provide technical leadership for quality assurance and test engineering activities - manual and automation This is a hybrid position. … or with an Advanced Degree. You have payments related SME knowledge in one or more of the following industries - Banking, Fintech, Retail, Healthcare, Insurance Proficient in Web Services/API Development using SOAP or REST, JSON and XML. Experience in Kafka - Ability to install, maintain and troubleshoot Kafka. Have experience with messaging and stream processing on Kafka. Have More ❯