101 to 125 of 149 API Development Jobs in the UK

to grow their career with the markets area. To be successful as a C# Developer within the Core Risk team, you should have prior experience in: .Net 8 Web API development Database technologies, either SQL Server or MongoDB C# multithreading and concurrency Some other highly valued skills may include: Exposure to Kubernetes & Container Orchestration Authentication & Security Distributed Systems … Glasgow Campus. Purpose of the role To design, develop and improve software, utilising various engineering methodologies, that provides business, platform, and technology capabilities for our customers and colleagues. Accountabilities Development and delivery of high-quality software solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code is scalable, maintainable, and optimized for performance. Cross-functional collaboration … in their assigned area of expertise Thorough understanding of the underlying principles and concepts within the area of expertise They lead and supervise a team, guiding and supporting professional development, allocating work requirements and coordinating team resources. If the position has leadership responsibilities, People Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment More ❯

background as a Software Architect or Lead Engineer. Strong experience with Swift, particularly in mobile app development. Strong Experience working with APIs Exposure to Swift Vapor for server-side API development (desirable, not essential). Proficiency in modern JavaScript/TypeScript stacks Node.js, Angular. Experience in small or mid-sized software companies. Strong communication and collaboration skills. Salary More ❯

LangChain, LlamaIndex, or similar technologies Advanced programming skills in Python or JavaScript for rapid prototyping and system integration Familiarity with workflow automation solutions (UiPath, Power Automate, Zapier, n8n) and API development Practical knowledge of vector databases and embedding technologies for RAG system implementation Outstanding interpersonal skills - capable of converting business challenges into technical AI strategies Background in agile More ❯

all other internal teams WHAT YOU WILL WORK ON Rapid prototypes: Build, ship, learn, test, and iterate fast AI & Automation: Explore and integrate AI tools (OpenAI, Claude, Gemini) MCP & API development: Maintain and develop our MCPs and extend MailerLites capabilities Tech research: Stay ahead of industry trends, experiment with new tools and bring forward innovative solutions Direct impact … You will work closely with the CTO on R&D priorities and shape the next-gen of the MailerLite platform WHAT WE EXPECT FROM YOU Strong development background: Proficient in at least one major programming language. We use PHP & Laravel, but for this position we expect someone stronger at Typescript, Python or Go. Language is not important as long … We know that these tools havent been on the market for long, but we are looking for someone with practical experience using APIs like OpenAI/Anthropic/Gemini API & System knowledge: REST APIs, webhooks, distributed systems design Fast iteration mindset: Ability to go from idea to prototype to validation quickly Curiosity and autonomy: You have a love of More ❯

clients. The Role Take ownership of planning and delivering integrations across multiple platforms. You'll collaborate with remote developers, internal stakeholders and client IT teams, while shaping a standard API framework and creating reusable documentation. Key Duties: Scope, plan and manage integrations from discovery to go-live Translate business needs into clear developer specifications Oversee API development … compliance and strong data security Produce integration guides and templates for future projects About You Proven experience managing B2B system integrations (ERP, e-commerce, order management or similar) Solid API knowledge (REST/GraphQL/EDI) and data mapping skills Confident project manager (Agile/Prince2 a plus) Excellent communicator, able to bridge technical and non-technical teams UK More ❯

scaling infrastructure, workflows, and tools to power Large Language Models (LLMs). Partnering with researchers to overcome challenges in agent-generated code. Building frameworks for annotation, training, and model development at scale. What We're Looking For: 4+ years' experience in ML/AI (LLMs, recommender systems, data mining, or similar). Proven hands-on work with LLM agents … . Advanced debugging, experimentation, and optimisation skills. Master's or PhD in Computer Science, AI, ML, or related field . Bonus Skills: Research background (papers, Kaggle Master). Backend API development + frontend (React/JavaScript) for annotation tools. Contract Details: Contract: Outside IR35 Duration: 6-12 months (extension very likely) Location: Remote (UK-based) ?? Apply today to More ❯

Lead Customer Integration Team Join a fast-growing HR software company as a Technical Lead for their Integration team with Client Facing experience, leading/mentoring technical teams and API development & integrations experience (C#, .NET, SQL Server). Their cutting-edge HRIS platform streamlines everything from recruitment, onboarding to payroll and performance management click apply for full job More ❯

within AI roles Have experience in Machine Learning, NLP, and GenAI Be proficient in Python and data libraries Maintain previous experience with SQL/NoSQL databases Have experience in API development/integrationAbility to analyze model performance In return our client offers outstanding benefits and a great working environment. Please apply for more opportunity on this AI Engineering More ❯

Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have (not essential): Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have (not essential): Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

maintainable pipelines Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have: Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

Quick learner with a passion for new technologies Experience in startups or top-tier consultancies is a plus Nice to Have (not essential): Familiarity with dashboarding tools, Typescript, and API development Exposure to Airflow, DBT, Databricks Experience with ERP (e.g. SAP, Oracle) and CRM systems What's On Offer: Salary: £50,000-£75,000 + share options Hybrid More ❯

Software Architect or Senior Engineering roles. Strong expertise with Angular.JS/TypeScript. Solid hands-on experience with Swift, ideally Swift Vapor for Back End services. Proven track record in API design and development. Excellent interpersonal and communication skills to engage with both technical and non-technical stakeholders. Package & Location Salary: £85,000 per annum + Benefits Location: Central London More ❯

Software Architect or Senior Engineering roles. Strong expertise with Angular.JS/TypeScript. Solid hands-on experience with Swift, ideally Swift Vapor for Back End services. Proven track record in API design and development. Excellent interpersonal and communication skills to engage with both technical and non-technical stakeholders. Package & Location Salary: £85,000 per annum + Benefits Location: Central London More ❯

per day Inside IR35 Overview: Looking for an experienced Technical Lead to join a high-performing engineering team. This role offers the chance to take ownership of full-stack development projects, guide a small team of developers, and deliver high-quality, scalable software solutions using modern cloud technologies. Key Responsibilities: Lead end-to-end software development, from design … and maintain RESTful APIs using TypeScript and Node.js. Build responsive, user-friendly frontends with Angular or React. Design and deploy scalable applications using AWS serverless technologies such as Lambda, API Gateway, and DynamoDB. Oversee data solutions leveraging Amazon Aurora Postgres. Conduct code reviews, ensure best practices, and mentor other developers. Collaborate closely with product, design, and architecture teams to … ensure successful project delivery. Key Skills & Experience: Strong experience with TypeScript and Node.js for Back End/API development. Skilled in Angular or React for Front End development. Experience with AWS cloud-native/serverless architecture. Solid understanding of CI/CD pipelines, Git, and modern DevOps practices. Knowledge of Java Spring Boot is a plus. Excellent communication and More ❯

with cross functional teams to design and implement leading edge 3D graphics solutions for gamers and customers, and play a pivotal role in the innovation of GPU drivers and API development, and have technical ownership on key sections of projects. Your Role As a Senior Graphics Engineer, you will enjoy developing and optimising real time rendering pipelines to … standard features and extensions for Open GL ES and Vulkan. Your role as Senior Graphics Engineer will also see you being heavily involved in performance optimization and analysis, middleware development, and hardware integration. This will involve enhancing GPU drivers, analysing, graphic workloads, creating graphic based middleware libraries, as well as defining and integrating GPU requirements into the operating system. … innovative and collaborative environment. Working Pattern: Hybrid Determination: Inside IR35 About You Expert-level of proficiency in C and C++ programming languages Proven expertise in real-time embedded software development for mobile devices. Excellent knowledge of computer graphics, including OpenGL, OpenGL ES, Vulkan, or DirectX APIs. Deep understanding of graphics pipelines and modern mobile GPU architectures. Excellent system-level More ❯

Technologies: Java API development Angular JS Continuous Integration Software Architecture Endeavour Recruitment is urgently recruiting for an experienced Software Architect to join an excellent, reputable, London-based European organisation in the medical sector. This is an fantastic opportunity, initially for a contract till the end of the year, with strong possibility of extension. Skills/Experience required : Strong … Java Software Application development experience. Angular JS Continuous integration (Jenkins/Maven/Nexus/Sonar) Please apply for further details on this excellent, not-to-be missed contract opportunity. More ❯

technology delivery, designing data models, processes, and applications that enable digital transformation and organisational scalability. This role requires balancing long-term architectural vision with immediate transformation needs, guiding integration, development, and adoption of best-fit technologies across a complex, multi-system environment. You will also play a key role in evaluating and integrating systems from acquired entities, ensuring architectural … stakeholder management and influencing skills across business and technical domains. Proven experience with ERP, CRM, and financial systems (e.g., NetSuite, SAP, Microsoft Dynamics). Solid understanding of systems architecture, API design, and modern integration patterns. Knowledge of data architecture principles, governance frameworks, and integration methodologies. Ability to assess and recommend emerging technologies that drive efficiency and scalability. Experience working … equivalent). Experience leading technical teams, external consultants, or project delivery functions. Proven success delivering enterprise transformation or multi-system integration projects exceeding £500k . Hands-on experience with API development , data migration , and system integration projects. Background in legacy system modernisation , particularly ERP transitions. Exposure to M&A technology integration (due diligence and post-acquisition) highly advantageous. More ❯