101 to 125 of 269 API Development Jobs in the UK

Senior Software Engineer

Hiring Organisation
Bright Purple Resourcing
Location
Poole, Dorset, South West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
Fully remote within the UK 12 month fixed term contract with strong possibility for extension 33 days' annual leave Pension and private healthcare Professional development and a clear route to progression A supportive, mission-driven team Work that makes a visible difference to people's lives What … What you'll bring Extensive commercial experience with C#, .NET and SQL Strong Azure experience, including cloud adoption frameworks A proven track record in API development and modern system architecture Hands-on experience with CI/CD pipelines, version control, automated testing and code reviews A calm, practical ...

Junior Software Engineer (Data Products)

Hiring Organisation
Yapily
Location
London, UK
Employment Type
Full-time
/Sub, BigQuery, Cloud Storage Cross-functional Collaboration: Partnering with BI, infrastructure, and productteams to understand data requirements and deliver technical solutions. API Development: Helping build and document APIs that deliver a seamless dataexperience for internal and external stakeholders. Database Operations: Working with SQL and NoSQL databases, helping … understanding of CI/CD concepts. Problem-Solving Mindset: A proactive approach to debugging and a genuinecuriosity about how data flows through a system. API Awareness: Basic understanding of REST APIs and how microservicescommunicate. Educational Background: A degree in Computer Science, Software Engineering, ora related field (or equivalent practical ...

Senior Data Scientist, Agentic Systems

Location
City of Westminster, England, United Kingdom
with Research, Product, and Engineering to rapidly prototype, test, and refine new capabilities through short feedback loops. Take solutions from prototype to production, including API development, CI/CD pipelines using GitHub Actions, and Kubernetes deployments across multiple environments using core AWS services such … Platform & Systems Self‐Sufficiency This is you if you're comfortable owning infrastructure end‐to‐end — deploying a database, designing a schema, shipping an API — without a dedicated platform or DevOps team.* Experience designing APIs and deploying containerized services using Docker and Kubernetes. Bonus: Experience with graph‐aware retrieval ...

Senior Software Developer

Location
Bridgend, Wales, United Kingdom
Purpose** This role demands deep expertise in Microsoft Dynamics 365, Azure Cloud, and Microsoft Power Platform, paired with strong skills in web technologies, API development, and systems design. You will lead the customization and optimization of our Dynamics 365 CRM, mentor team members, and collaborate with technical leadership … Responsibilities** Relying on extensive experience and judgment, this role offers substantial latitude for decision-making with minimal oversight, including:**Microsoft Dynamics 365 CRM Development*** Customize and optimize Microsoft Dynamics 365 CRM to align with business requirements.* Integrate client APIs into Dynamics 365 using Azure Cloud services and Microsoft Power ...

Liferay Front End Developer

Location
Greater London, England, United Kingdom
Dozer (a fast and flexible framework for mapping back and forth between Java Beans) & XML: A minimum of 5 years’ work experience in Software Development Experience with implementing service-oriented architecture (SOA) Designs and develops Enterprise application integration (EAI) using any ESB products like Fuse, Camel, TIBCO, IBM message … experience in architecting and developing J2EE based web applications (JSP, Servlet, JDBC, JMS, JAXB) Expert level experience with SOAP and REST web services , open API development, and SOA concepts, using Spring with groovy, XML, JSON, and XSLT Solid understanding of integration & design patterns Gain adoption of platform delivery ...

Software Engineer

Location
Greater London, England, United Kingdom
practices to build robust systems and contribute to high‐quality project outcomes. You will be responsible for producing clean, maintainable code using modern software development techniques and tools (such as Git), and work on backend APIs and data engineering pipelines with a focus on reliability and efficiency. Your role … will involve supporting cloud deployment, utilising Docker and Linux as part of the development and deployment process. We’re looking for someone with a co‐operative, can‐do attitude who can build high‐quality data engineering solutions. If this sounds like you, we can’t wait to hear from ...

PHP Developer

Location
Shoreham-by-Sea, England, United Kingdom
Developer Application Deadline: 2 November 2026 Department: Software Development Employment Type: Permanent Location: Shoreham-by-Sea Reporting To: Mark Bolt Compensation: £45,000 - £50,000/month Description Established in 2003, Focus Group is proud to be one of the UK’s fastest growing independent providers of essential business … supporting existing functionality across Focus Group’s portfolio of internal applications and services. This multi-faceted role will involve working closely with the internal development team developing set deliverables that are fit for purpose. Key Responsibilities Principal Responsibilities/Duties Develop change requests and fixes on Focus Bespoke ...

Senior Data Platform Engineer (Python & Databricks)

Location
City of Edinburgh, Scotland, United Kingdom
About Codelitt At Codelitt, we are more than a product-development company. We are creators, innovators, and problem solvers. We partner with companies around the world to design and build meaningful digital products, modernize complex systems, and solve challenging technical problems. Our globally distributed team values technical excellence, ownership … platform. We process our payment in US dollars, however you can receive it in your local currency. What You’ll Do Data Platform Development Build and maintain components of a large-scale financial data platform. Develop reliable data pipelines for ingesting, transforming, and delivering financial data. Design data models ...

Senior Developer

Location
Birmingham, England, United Kingdom
maintainable engineering practices. Partner with product, engineering, and business stakeholders to translate requirements into scalable technical solutions. Apply secure and resilient engineering practices across development and delivery (DevSecOpsmindset). Monitor emerging technology trends, including AI opportunities and risks, and pragmatically apply them to improve engineering outcomes. … preventive action as necessary and suggesting and implementing improvement activities. Key Stakeholders: Lead Back End Engineer Product Owners QA DevOps/Platform Head of Development Security Business Stakeholders including product owners Technical/Professional Qualifications/Requirements: Technical: Minimum 6 years of commercial software engineering experience. Strong commercial experience ...

FullStack ASP.NET Developer - Insuretech

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Tech: JavaScript, ASP.NET MVC 5, Entity Framework Code First, Restful API, Angular, SQL, Azure Challenge: Greenfield platform, API development, industry specific challenges Firm: Well-known Insuretech business, City of London, 5 man flat Dev Team Pay: 75k, Bonus- 750 training budget, Pension, Life/Health, Some Flex … individualised, algorithmic financial products, bringing together investment banks, insurance companies, asset managers and commercial banks. You will be responsible for the design, planning and development of front-end solutions, based on industry requirements and resulting from cooperation with the team and our customers You will need to establish testing ...

Back-End Developer

Location
Belfast, Northern Ireland, United Kingdom
projects where innovation meets innovation, shaping user experiences that captivate and inspire. If you're driven to push the boundaries of App and Software development, this is your chance to make a significant impact. We are looking for an experienced and forward thinking Developer, who wishes to work … Strong understanding of MVC architecture , ORMs (Eloquent) , and service containers . Experience with MySQL databases, including schema design and query optimisation. Solid understanding of API development (REST, JSON). Proficient in Git and modern version control workflows (GitHub/Bitbucket). Experience with queuing systems (e.g. Laravel Queues ...

Software Engineers

Location
Douglas, Isle of Man, United Kingdom
Experience Software engineering and application development. Microsoft technologies including Azure, .NET, C#, Power Platform and associated services. Solution architecture and technical design. Salesforce development, administration or platform engineering, or transferable software engineering skills with the ability to develop Salesforce expertise. Cloud Operations Engineering, platform engineering, infrastructure engineering or site … reliability engineering. Test automation, quality engineering and automated testing frameworks. API development, application integration and distributed systems. DevOps tooling, CI/CD pipelines and automation practices. Monitoring, observability, incident management and operational resilience. Agile software delivery and modern engineering methodologies. Strong analytical, troubleshooting and problem-solving skills. Excellent ...

Mid-Level Full-Stack Software Engineer

Location
Greater London, England, United Kingdom
maintain robust APIs and user interfaces for our enterprise applications. The ideal candidate will be passionate about clean code, scalable architecture, and collaborative development, working closely with engineering and Product teams to build high quality products. Exposure to modern AI tools and services (such as GitHub Copilot or APIs … Core. Work with data from SQL (MS-SQL server) and NoSQL (MongoDb) databases and external APIs. Ensure secure coding practices are followed throughout the development lifecycle. Collaborate with cross-functional teams to integrate APIs with frontend and backend systems. Build and maintain responsive, accessible user interfaces using React, JavaScript ...

Google Edge Mid Market Delivery Exec

Location
City Of London, England, United Kingdom
about more than a lift-and-shift — it's about rearchitecting how companies build, deploy, and scale software. From containerized microservices on GKE to API-first architectures on Apigee to AI-augmented development with Gemini Code Assist, we help clients transform their application estates into modern, cloud-native … Google Cloud domains: Data & AI: Build data pipelines and analytics solutions using BigQuery, Dataflow, and Looker. Generative & Agentic AI: Contribute to the design and development of AI solutions using Vertex AI, Gemini models, and Retrieval-Augmented Generation (RAG). Security Operations (SecOps) & Cyber Defense: Design and build solutions that ...

Senior Manager of Software Engineering

Location
Glasgow, Scotland, United Kingdom
mentoring, and cross-team coordination. Job responsibilities Builds and sustains a high performance engineering team through structured hiring, onboarding, regular one-to-ones, performance development, and active coaching of engineers at all levels Creates an environment where engineers are empowered to do their best work, with clear goals, rapid … agile environment Formal cloud training or certification on software engineering concepts and applied experience Hands-on practical experience delivering system design, application development, testing, operational stability, scalability Advanced in one or more programming language(s) such as go, java, python, terraform Proficiency in automation and continuous delivery methods Proficient ...

Full Stack Javascript Software Engineer

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
Challenge: Greenfield Trading platform, API development, industry specific challenges Firm: Well-known Fintech Trading Platform Vendor, Surbiton, 30 man flat global Dev Team Pay: 80k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingFull Stack Javascript Software Engineer Quant Capital is urgently looking for a Full … pricing of derivatives to most of the buy side. I am seeking a full stack developer to work as part of a larger development team focused on driving innovation across a cloud-enabled, microservices platform for the Institutional & Investment Management divisionThis is an opportunity for an individual with ...

AI Platform Engineer (Sharepoint, OpenAI)

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £480/day £480 p/d Inside IR35
ready solutions including testing, CI/CD, logging and documentation. - Provide technical leadership and mentorship to a junior engineer. Essential Skills & Experience - MCP server development and AI agent tooling - Azure OpenAI, Azure AI Search, RAG and prompt engineering - SharePoint Online and Microsoft Graph API - Hybrid semantic/vector … search - Enterprise API development and document processing - Azure (Functions and/or Container Apps) - Entra ID and OAuth/OIDC- CI/CD, testing and production support - Software engineering experience, ideally using Python and/or C#/.NET Desirable Skills - Microsoft 365 Copilot - Microsoft Purview - Enterprise knowledge ...

Software Engineer

Location
United Kingdom
excellence. Operating in key financial centres across the Americas, Asia, Europe and the Middle East, our international presence offers a unique springboard for career development and cross-cultural immersion. Our side-by-side financial and legal services are similarly ripe for interdisciplinary learning and growth. The Maples Group looks … while continuously improving existing applications Upholding high code quality standards and ensuring comprehensive test coverage Ensuring security, stability, and capacity are embedded in the development and deployment of services Integrating software components and third-party apps Leveraging Azure Cloud services to boost performance and scalability Designing and deploying Infrastructure ...

Senior AWS Cloud Engineer

Hiring Organisation
Mars Recruitment
Location
Abingdon, Shippon, Oxfordshire, United Kingdom
Employment Type
Permanent
Salary
£70000 - £75000/annum plus bonus & benefits
used regularly for automation, operational tasks, and reducing manual intervention. Integration services: proficient in AWS integration services (EventBridge, SQS, SNS, Step Functions, Lambda and API Gateway) and able to work with Azure Integration Services (Logic Apps, Service Bus, Event Grid and API Management) for integration design and implementation. … design using AWS Organizations and Control Tower, IAM and IAM Identity Center, VPC networking, and security services such as GuardDuty, Security Hub and CloudTrail. API Development: solid experience with SOAP and REST APIs, including design, development, and secure management. Experience with GitHub version control, including branching strategies ...

AI Engineer

Location
Greater London, England, United Kingdom
Department/Division : Business Technology Duration : Permanent Reports to :IT Development Manger Type of Role : Hybrid Budget Responsibilities : No Reference number : 10740 The Role Reporting to the IT Development Manager, with a dotted line to the Director of Helix, you will be a senior, experienced AI Engineer … based systems, with particular attention to legal accuracy, confidentiality, security, provenance and responsible use. Platforms and technical delivery: Use approved OpenAI capabilities, including relevant API, Skills and Work capabilities, alongside FleetAI and other approved platforms where they best meet the use case and governance requirements. Build production-minded back ...

Senior Full Stack Engineer - Lyst Shop (11 Month FTC - Maternity Cover)

Location
Greater London, England, United Kingdom
shopping through AI and technology. We are looking for an experienced Senior Full-stack Engineer to join our Shop Experience team within the Product Development tribe. You will play a key role in shaping seamless, trustworthy, and high-performing shopping experiences for millions of users around the world. … product experiences are built by collaborative teams with strong technical foundations and a deep understanding of user needs. You will focus on: Full-stack Development: You will design, build, and evolve scalable web applications and backend services using React, TypeScript, and Python (Django). You’ll contribute across ...

Senior Software Engineer

Hiring Organisation
Method-Resourcing
Location
City of London, London, United Kingdom
Employment Type
Permanent
throughput applications Low-latency engineering experience Strong analytical and mathematical problem-solving ability Experience with cloud platforms, ideally GCP Docker/containerisation experience REST API development experience Experience with event-driven architecture or messaging Exposure to AI, machine learning or AI-enabled systems Strong understanding of performance, reliability ...

Machine Learning Engineer, Associate Director (Manchester)

Location
Manchester, England, United Kingdom
operations, including containerization (Docker, Kubernetes/AWS EKS), cloud platforms (AWS/Azure), workflow orchestration (Airflow), automated testing for ML systems, and API development for model deployment Technical leadership and influence – Track record of mentoring and coaching engineers, driving ML initiatives in fast‐moving environments, leading through technical ...

Machine Learning Engineer, Associate Director (London)

Location
Greater London, England, United Kingdom
operations, including containerization (Docker, Kubernetes/AWS EKS), cloud platforms (AWS/Azure), workflow orchestration (Airflow), automated testing for ML systems, and API development for model deployment Technical leadership and influence – Track record of mentoring and coaching engineers, driving ML initiatives in fast-moving environments, leading through technical ...

Machine Learning Engineer, Associate Director (London)

Hiring Organisation
Fitch Ratings
Location
London, UK
Employment Type
Full-time
operations, including containerization (Docker, Kubernetes/AWS EKS), cloud platforms (AWS/Azure), workflow orchestration (Airflow), automated testing for ML systems, and API development for model deploymentTechnical leadership and influence – Track record of mentoring and coaching engineers, driving ML initiatives in fast-moving environments, leading through technical excellence ...