Permanent API Development Jobs in the UK

1 to 25 of 328 Permanent API Development Jobs in the UK

API Architect

Winchester, Hampshire, United Kingdom
iPipeline
protected veteran status. We are committed to building a supportive and inclusive environment for all employees. This is an office-based position. Responsibilities An API Architect leads the design of complex integration solutions, using deep technical expertise to shape high-performance systems. They play a key role in developing … with broader organizational objectives. This role requires significant leadership in driving integration strategy across the enterprise. Job Responsibilities : Strategic Alignment: Design and lead the development of enterprise API architectures that align with business goals and objectives. Work with leadership and stakeholders to ensure APIs align with organizational strategies … and meet evolving business needs. API Design & Development: Lead the design of robust, scalable, and high-performance APIs that integrate multiple internal systems. Establish API development best practices, including design patterns, error handling, authentication, and security mechanisms. Drive the adoption of API-first design principles More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

AI Developer (Semantic Kernel)

Glasgow, Renfrewshire, United Kingdom
Aggreko, LLC
skilled AI Developer with expertise in .NET, C#, Python, Data Science, and Data Engineering. This role requires hands-on experience in AI solution integration, API development, data processing, and cloud-based data pipelines. A deep understanding of Microsoft's Semantic Kernel and enterprise-grade AI-powered application development … an innovative and collaborative new team. Gain continuous learning and career growth opportunities. Competitive compensation and benefits package. What you'll do: AI & Software Development: Design and maintain AI applications using .NET, C#, Python, and Microsoft's Semantic Kernel, ensuring high performance and scalability. Data Science & Engineering: Handle large … processing to support AI solutions. AI Solution Integration: Enhance enterprise applications with AI services like Azure OpenAI and Cognitive Services for automation and analytics. API Development: Create secure and efficient RESTful APIs for AI and enterprise applications, deploying solutions using Azure services (AKS, Azure Container Apps). Version More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Solutions Architect

London, United Kingdom
Onyx-Conseil
They are seeking to recruit a Senior Solutions Architect based at the company's Central London offices. Responsibilities include: Applying extensive expertise in application development areas such as cloud-native development, 12-factor apps, microservices, serverless computing, API management, Kafka, etc. Deep knowledge of microservices, containers, REST … API development, API management tools (e.g., MuleSoft, Apigee), Kafka. Broad expertise in digital technologies including application platform development, web and mobile development, cloud, integration, and security. Hands-on experience with at least one cloud provider (Amazon AWS or MS Azure). Understanding of distributed computing … testing. DevOps experience including CI/CD, test automation, containerization tools and processes. Familiarity with emerging technologies like chatbots, voice interfaces, RPA, machine learning. Development experience with Java/J2EE or .NET stacks and databases such as Oracle, MySQL. Exposure to polyglot programming languages like Scala, Python, Golang is More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Fullstack Developer

United Kingdom
Hybrid / WFH Options
Neogen Recruitment
to join our clients' tech services division. The ideal candidate will have experience in PHP Laravel, JavaScript, serverless applications using AWS Lambda (Python), RESTful API development, and serverless architectures. You should have a strong background in both frontend and backend development and be passionate about building scalable … and JavaScript frameworks.Design and implement RESTful APIs to support vehicle reservations, subscriptions, and broker management functionalities.Develop and maintain serverless applications using AWS Lambda (Python), API Gateway, RDS, and SQS for efficient, scalable backend services.Implement authentication and authorization mechanisms to secure API access, including the use of API keys.Implement and manage AWS cloud services to support application development and deployment using Terraform for IaC.Utilize serverless architectures to enhance application performance and scalability.Collaborate with cross-functional teams to define, design, and ship new features.Write clean, maintainable, and efficient code.Troubleshoot, debug, and upgrade existing systems.Ensure the performance, quality More ❯
Posted:

Software Engineer (WPF Developer)

Malvern, Worcestershire, United Kingdom
Neuronetics
responsible for developing and maintaining Neuronetics product and non-product software. The position requires working with a team of both contract and in-house development and test personnel. Job duties include the development of new features, writing unit and automation tests, debugging software issues reported from the field … and assisting with the creation of requirement and design documentation. Essential Duties/Responsibilities: Development of new product software features. This can involve UI/UX development, API development, and/or backend framework updates. Analyze field reported issues and troubleshoot complex software issues. Development … Excellent knowledge of software and application design and architecture. Strong experience with C# and the .NET framework. Strong knowledge/experience with Windows Desktop Development (WPF) using the .NET platform. Experience with Microsoft SQL Server. Ability to prototype development for new technologies. Strong interpersonal skills. Ability to work More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Back-end Engineer

London, United Kingdom
Randstad (Schweiz) AG
and post-trade client operations, while enabling asset managers to distribute their products through a scalable "Alternatives-as-a-Service" framework. Vega's modular, API-driven architecture ensures compatibility with a broad range of existing point solutions and third party stakeholders, setting the foundations for the first purpose-built … and 60 senior executives from the alternative investment industry. To learn more, please visit . Key responsibilities Architect and Develop: lead the design and development of back-end services for our SaaS B2B platform, focusing on creating an open architecture that integrates various players in the private equity ecosystem. … Microservices: build and maintain microservices using Java 21 and Spring Boot, ensuring scalability, reliability, and performance. Cloud Development: play a crucial role in our cloud infrastructure with Kubernetes (K8s) on AWS, leveraging Docker for containerisation. API Development: develop and optimise RESTful APIs to support our frontend applications More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Product Engineer

London, United Kingdom
Story Terrace Inc
skills that make our solutions indispensable to our clients. Tasks include: System Architecture: Design scalable, secure platform-based architectures (microservices, event-driven, etc) Python Development: Deliver projects in Python, ensuring high performance and scalability API Development: Design secure, scalable APIs Large-Scale Data Handling: Build systems to … AI & ML: Integrate Gen AI solutions and explore machine learning for business applications AWS Cloud Expertise: Architect and deploy systems using AWS services (Lambda, API Gateway, S3, etc) Security Mindset: Implement security best practices across development processes CI/CD & Automation: Set up CI/CD pipelines and … based systems and have an excellent knowledge of modern cloud architectures, particularly AWS. Must-have experience Strong product-focus, owning end-to-end feature development and testing Extensive Python experience architecting platforms and microservices in event-driven and monolithic environments Experience with API development and a focus More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Digital Automation & Low Code Developer

Guildford, United Kingdom
Hybrid / WFH Options
Royal Surrey NHS Foundation Trust
Job summary Are you passionate about automation, low-code development, and digital transformation ? Do you want to develop innovative solutions that improve efficiency and user experience? We are looking for a Digital Automation & Low-Code Developer to join our People Scaling team , focusing on automating HR and workforce processes … . You will be responsible for designing, developing, and maintaining workflow automation, RPA (Robotic Process Automation), API integrations, and AI-powered solutions using Microsoft Power Automate, Power Apps, and related technologies . This role is hands-on and technical , perfect for someone who thrives in problem-solving, solution development … of the job Key Responsibilitieso Develop automation workflows using Microsoft Power Automateo Build low-code applications with Power Apps for HR & workforce processeso Design API integrations for seamless system connectivity (ESR, ATS, LMS, payroll)o Implement AI-driven automation to enhance efficiencyo Create self-service portals, digital forms, and More ❯
Employment Type: Permanent
Salary: £39205.00 - £47084.00 a year
Posted:

Senior Software Developer - .NET / React

Bradford, West Yorkshire, United Kingdom
Randstad Technologies Recruitment
+ Bonus + Excellent Benefits Hybrid/West Yorkshire Looking for your next step as a Senior Developer with strong API expertise? This well-established organisation is investing heavily in tech and needs a confident engineer to help lead the way with their cloud-first, microservices-based systems. You … ll be involved in shaping development standards, mentoring others, supporting third-line issues, and leading the design of scalable, secure APIs using .NET and Azure. What you'll be doing: Leading API development and integration work in a microservices environment Designing and delivering .NET-based services that … are reliable, secure, and scalable Setting and maintaining development standards across the team Working closely with stakeholders to understand requirements and troubleshoot issues Taking ownership of solution design, technical documentation, and governance Keeping an eye on innovation and emerging tech to improve systems and services Tech stack and experience More ❯
Employment Type: Permanent
Salary: £40000 - £60000/annum
Posted:

Senior Product Engineer

London, United Kingdom
Randstad (Schweiz) AG
for someone who wants to help shape a growing business, providing input on all aspects of the business with a focus on product design, development and delivery. You should love shipping to customers. Nothing we build matters if it isn't solving problems for our customers and you love … do. Responsibilities Our Product Engineers work across the technical stack, designing and implementing the solutions that become indispensable to our clients. Tasks include: Python Development: Deliver projects in Python, ensuring high performance and scalability Deep collaboration: Work with cross-functional teams to align on goals and deliver results Generative … Design scalable, secure platform-based architectures (microservices, event-driven, etc) Large-Scale Data Handling: Build systems to manage and process large data volumes efficiently API Development: Design secure, scalable APIs AWS Cloud Expertise: Architect and deploy systems using AWS services (Lambda, API Gateway, S3, etc) Experience As More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer in Product

London, United Kingdom
Hybrid / WFH Options
Story Terrace Inc
achieve the same. Most of all, you will enjoy working with a great team and be passionate about the work you do. Responsibilities Python Development: Deliver projects in Python, ensuring high performance and scalability Deep collaboration: Work with cross-functional teams to align on goals and deliver results Generative … Design scalable, secure platform-based architectures (microservices, event-driven, etc) Large-Scale Data Handling: Build systems to manage and process large data volumes efficiently API Development: Design secure, scalable APIs AWS Cloud Expertise: Architect and deploy systems using AWS services (Lambda, API Gateway, S3, etc) Experience As … microservices Strong product-based focus, owning components/features end to end Broad architecture exposure, including microservices, event-driven and monolithic environments Experience with API development Hands-on experience with AWS cloud services Excited to work with AI tools Nice to have experience Experience or strong interest in More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Solutions Architect

London, United Kingdom
Jas Gujral
Senior Solutions Architect to be based at the Company's Central London Offices. You will have extensive and deep expertise in the 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 a wide range of digital technologies in areas of application platform development, web and mobile development, cloud, integration, security, etc. Application development experience with … 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 More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Analyst at Linaker

Sussex, United Kingdom
Hybrid / WFH Options
HipHopTune Media
management practices. Collaborate with cross-functional teams to support digital transformation initiatives and enhance data-driven decision-making. Contribute to the support and continual development of the data landscape to ensure its optimal performance and availability. Requirements Excellent communication and collaboration skills, with the ability to manage multiple projects … Experience with any of the following would be desirable but not essential; Microsoft's Fabric data platform, Experience with ADF such as managing pipelines, API development, API webhooks, automation. Previous experience working with facilities management datasets. THE PACKAGE A competitive salary of up to £45,000 with More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Solutions Architect

London, United Kingdom
Jas Gujral
to ensure ongoing alignment to established solution vision. Required Expertise: Extensive and deep 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 a wide range of digital technologies in areas of application platform development, web and mobile development, cloud, integration, security, etc. Application development 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. Conversant with emerging technologies - chatbots, voice/ More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Solutions Architect

Holborn London, Greater London, England
Nexus Jobs Limited
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 … 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 More ❯
Employment Type: Permanent
Salary: £70,000 - £100,000
Posted:

Solutions Architect

City London, London, England
Nexus Jobs Limited
to recruit a Senior Solutions Architect to 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 … 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 More ❯
Employment Type: Permanent
Salary: £90,000 - £120,000
Posted:

Solutions Architect with Pre Sales Experience

Holborn London, Greater London, England
Nexus Jobs Limited
with some Pre-Sales experience 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 … 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 More ❯
Employment Type: Permanent
Salary: £90,000 - £120,000
Posted:

Senior Java Software Engineer

London, United Kingdom
Plutus
Fast 50 Leadership Award, Canada's 10 Most Admired Corporate Cultures, and the Deloitte-sponsored Canada's Best Managed Companies awards. Our Global Operations & Development Center is located in Vancouver, BC, Canada. In addition, we have offices in six other cities across the world, including major financial centers like … Boot Real-time communication APIs (WebRTC, SIP, XMPP) Responsibilities: Design, implement and provide architectural guidance in deploying microservices as a part of an agile development team Migrate existing services to microservices, with the goal of reducing complexity at the design and architecture level Write unit and integration tests for … your Java code Collaborate with testers in development of functional test cases Develop deployment systems for Java based systems Collaborate with product owners on user story generation and refinement Monitor and support the operation of production systems Participate in knowledge sharing activities with colleagues Pair programming and peer reviews More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Dotnet Developer

Doncaster, England, United Kingdom
Hybrid / WFH Options
In Technology Group
to hire a talented Full Stack Software Developer to join their innovative team. This is a hybrid role, offering flexibility while contributing to the development of an industry-leading SaaS product. About the Role: As a Full Stack Software Developer, you will work closely with the company Directors to … in the market. This is a fantastic opportunity to develop your career in a fast-paced, forward-thinking environment with access to continuous professional development (CPD) and further learning opportunities. You will be joining an agile, customer-driven team and will be expected to deliver exceptional standards, innovate, and … with C# MS SQL & Linq HTML5 & CSS3 Javascript, Jquery & AJAX JavaScript-related libraries – React, TypeScript, Angular Desirable Experience: DevOps (AWS & IIS) UX & UI MVC development Source control (GitHub) API development & integration App development Testing technologies Benefits: 30 days holiday + your birthday off Complimentary gym membership More ❯
Posted:

Full Stack Software Developer

Doncaster, South Yorkshire, Yorkshire, United Kingdom
Hybrid / WFH Options
In Technology Group Limited
to hire a talented Full Stack Software Developer to join their innovative team. This is a hybrid role, offering flexibility while contributing to the development of an industry-leading SaaS product. About the Role: As a Full Stack Software Developer, you will work closely with the company Directors to … in the market. This is a fantastic opportunity to develop your career in a fast-paced, forward-thinking environment with access to continuous professional development (CPD) and further learning opportunities. You will be joining an agile, customer-driven team and will be expected to deliver exceptional standards, innovate, and … with C# MS SQL & Linq HTML5 & CSS3 Javascript, Jquery & AJAX JavaScript-related libraries - React, TypeScript, Angular Desirable Experience: DevOps (AWS & IIS) UX & UI MVC development Source control (GitHub) API development & integration App development Testing technologies Benefits: 30 days holiday + your birthday off Complimentary gym membership More ❯
Employment Type: Permanent, Work From Home
Salary: £35,000
Posted:

Technical Lead

City of London, London, United Kingdom
McCabe & Barton
Benefits We are searching on behalf of our London Market Insurance client for a Technical Lead who will be responsible for overseeing the design, development, and implementation of technological solutions within the Reinsurance Segment. This role is critical in driving technical excellence, ensuring alignment with Lloyds, PRA, and FSA … regulatory frameworks, and managing both in-house and outsourced development teams. You will function as a bridge between business stakeholders and the technology teams, ensuring delivery of robust, scalable, and secure technology solutions. The role is responsible for providing hands-on technical oversight, including technology implementation approaches, for effectively … and regulatory requirements. Architect, design, and implement technology solutions that enhance underwriting, claims, policy administration, and reporting systems. Oversee all stages of the software development lifecycle (SDLC), from requirements gathering and system design to development, testing, and deployment. Ensure adherence to best practices in system security, data governance More ❯
Employment Type: Permanent
Posted:

Technical Lead

London Area, United Kingdom
McCabe & Barton
Benefits We are searching on behalf of our London Market Insurance client for a Technical Lead who will be responsible for overseeing the design, development, and implementation of technological solutions within the Reinsurance Segment. This role is critical in driving technical excellence, ensuring alignment with Lloyd’s, PRA, and … FSA regulatory frameworks, and managing both in-house and outsourced development teams. You will function as a bridge between business stakeholders and the technology teams, ensuring delivery of robust, scalable, and secure technology solutions. The role is responsible for providing hands-on technical oversight, including technology implementation approaches, for … and regulatory requirements. Architect, design, and implement technology solutions that enhance underwriting, claims, policy administration, and reporting systems. Oversee all stages of the software development lifecycle (SDLC), from requirements gathering and system design to development, testing, and deployment. Ensure adherence to best practices in system security, data governance More ❯
Posted:

Technical Lead, Reinsurance

London, United Kingdom
McNeil & Co
that helps others achieve their goals. In short, We Enable Possibility . The Position The Technical Lead will be responsible for overseeing the design, development, and implementation of technological solutions within the Reinsurance Segment. This role is critical in driving technical excellence, ensuring alignment with Lloyd's, PRA, and … FSA regulatory frameworks, and managing both in-house and outsourced development teams. You will function as a bridge between business stakeholders and the technology teams, ensuring delivery of robust, scalable, and secure technology solutions. The role is responsible for providing hands-on technical oversight, including technology implementation approaches, for … and regulatory requirements. Architect, design, and implement technology solutions that enhance underwriting, claims, policy administration, and reporting systems. Oversee all stages of the software development lifecycle (SDLC), from requirements gathering and system design to development, testing, and deployment. Ensure adherence to best practices in system security, data governance More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

MuleSoft Developer

Belfast
Hybrid / WFH Options
CGI
developing, and deploying integration solutions that connect multiple enterprise systems, applications, and data sources. This is an exciting opportunity to work on cutting-edge API-led connectivity, enhancing agility and scalability. CGI was recognised in the Sunday Times Best Places to Work list 2024 and has been named one … MuleSoft APIs and integrations to support digital transformation initiatives. • Collaborate with business and technology teams to understand integration requirements and deliver scalable solutions. • Develop API-led connectivity solutions using MuleSoft Anypoint Platform. • Create and maintain RAML and OpenAPI specifications for RESTful APIs. • Ensure best practices in API security … governance, and performance optimization. • Perform unit testing and integration testing to validate API functionality and reliability. • Troubleshoot and resolve technical issues in integration services. • Work with CI/CD pipelines and DevOps practices to automate API deployments. • Provide technical expertise and guidance to junior developers and stakeholders. • Stay More ❯
Employment Type: Permanent
Posted:

MuleSoft Developer

United Kingdom
CGI
developing, and deploying integration solutions that connect multiple enterprise systems, applications, and data sources. This is an exciting opportunity to work on cutting-edge API-led connectivity, enhancing agility and scalability. CGI was recognised in the Sunday Times Best Places to Work list 2024 and has been named one … MuleSoft APIs and integrations to support digital transformation initiatives. • Collaborate with business and technology teams to understand integration requirements and deliver scalable solutions. • Develop API-led connectivity solutions using MuleSoft Anypoint Platform. • Create and maintain RAML and OpenAPI specifications for RESTful APIs. • Ensure best practices in API security … governance, and performance optimization. • Perform unit testing and integration testing to validate API functionality and reliability. • Troubleshoot and resolve technical issues in integration services. • Work with CI/CD pipelines and DevOps practices to automate API deployments. • Provide technical expertise and guidance to junior developers and stakeholders. • Stay More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:
API Development
10th Percentile
£45,000
25th Percentile
£50,000
Median
£65,000
75th Percentile
£87,500
90th Percentile
£110,000