26 to 50 of 83 API Development Jobs in the UK

product from the ground up. This is an opportunity to work on a genuinely interesting product where you'll have ownership across the entire development lifecycle, helping shape both the user experience and the underlying platform architecture. The Opportunity: We're looking for a Full-Stack Developer with strong … ease. As a Full-Stack Developer, you'll contribute across the full technology stack, from creating intuitive React interfaces and workflow builders through to API development, database design and security-focused architecture. What You'll Be Doing: Building and enhancing full-stack features using Next.js, React and TypeScript ...

full stack in a modern cloud environment, building products that genuinely help people develop and progress? We're working with an ambitious training and development company that is reshaping how organisations deliver learning. As their platform continues to scale, they're looking to hire an Intermediate Software Engineer with …/CD & Version Control: Git-based workflows and automated pipelines What We're Looking For 2-4 years' commercial software development experience Strong hands-on experience with Node.js and API development Solid frontend experience with React Exposure to cloud infrastructure, ideally AWS Experience working with relational ...

supporting a major NHS digital transformation programme and are looking for three experienced Full Stack .NET Developers. You'll be working on the development and enhancement of critical healthcare applications, helping deliver scalable, secure, cloud-native solutions that directly support NHS services and patient outcomes. This is an excellent …/CD pipelines and modern DevOps practices Essential Skills & Experience Backend Strong commercial experience with: C# .NET/.NET Core ASP.NET Core REST API development SQL Server Frontend Strong experience with: React TypeScript JavaScript HTML5 CSS3 Cloud & DevOps Strong Azure experience CI/CD pipelines Infrastructure and deployment ...

JavaScript The Role As a motivated Junior Software Developer, you'll join a collaborative engineering team working on core business platforms and new product development initiatives. You'll gain exposure to the full software development lifecycle, working alongside experienced developers to build, maintain, and improve scalable applications. Requirements … Computer Science degree or equivalent commercial experience Exposure to software development through university projects, commercial work, or personal projects PHP and MVC framework experience (Laravel preferred) HTML, CSS, JavaScript, and SQL Object-Oriented Programming (OOP) Git/Version Control Ability to write clean, maintainable, and organised code Strong communication ...

promptly Experience with Copilot, Copilot Studio, and Agents Strong knowledge of Exchange Online Strong understanding of the Microsoft 365 tenant platform Experience with Graph API and API development Experience with Entra backup solutions, including Rubrik Ability to identify risk mitigation opportunities and develop new policies and procedures ...

providing Next Gen Engineering Services dedicated to transforming businesses. Our services span all facets of Digital Transformation, DevOps & Cloud, Integration, Automation, Low Code Application Development and AI-enabled services. Sandhata is a privately held IT services company with bases in the UK and India operating worldwide to help clients … strong Python engineering with DevOps enablement and hands-on integration of LLM technologies into secure, scalable enterprise environments. The ideal candidate will bring practical development and platform engineering experience, strong DevSecOps skills, and the curiosity to solve emerging engineering challenges in this rapidly evolving Gen AI space. Key Responsibilities ...

stakeholders to turn complex requirements into real, scalable solutions. You will not be maintaining legacy systems or doing incremental work. This is greenfield AI development with serious commercial impact. What's In It For You? Up to 39 days' annual leave with service (including public holidays) Hybrid and flexible … core hours working Pension, Health Insurance, Life Assurance and Income Protection Cover Career Development Framework and Professional Certification programme Colleague Reward and Recognition scheme Volunteering opportunities, wellness sessions, and organised social events Free parking, eye care scheme, and daily fruit and cereal on-site Competitive salary based on experience ...

team on an initial 3-6 month contract. Location: Belfast (Hybrid) Contract: 3-6 Months Daily Rate Essential Skills 5+ years of commercial Python development experience Previous experience within FinTech, Banking, Payments, or Financial Services Strong knowledge of Python and API development (FastAPI, Flask, or Django) Experience ...

API Developer (Golang/Python) - Financial Services Inside IR35 Sheffield (1-2 days/month onsite) A leading financial services organisation is seeking an experienced API Developer to join their team on a contract basis. This is a great opportunity to work on modern, scalable systems within … decisions and best practices Support performance optimisation and scalability initiatives Required Skills & Experience Strong experience with Golang (preferred) or Python Proven track record in API development (design, build, integration) Understanding of modern software engineering practices Nice to Have Experience with React or Node.js Working knowledge of Python ...

develop new functionality and make non-functional improvements to our products and services. Understand business requirements and how they translate into technical design and development projects and tasks. Participate in architectural and design discussions and diagnose and troubleshoot complex technical issues Work with stakeholders to progress and report … projects and tasks Building Voice Agents: Developing and maintaining our Go-based Voice Agent API Development: Contributing to our unified AI API that acts as the gateway between our telephony products and various AI providers Tool Creation: Developing "Tools" (Function Calling) that allow LLMs to interact with ...

drive engineering modernisation, cloud adoption, and scalable analytics capabilities within a fast-paced financial environment. You will play a key role in the design, development, and enhancement of enterprise-grade investment and credit trading technology solutions. The role combines hands-on engineering with modern cloud-native delivery practices, automation … assisted software development approaches Responsibilities include: * Develop and enhance full-stack applications supporting investment and trading workflows * Build and optimise cloud-based data platforms and pipelines using Snowflake and DBT * Deliver reporting and analytics solutions using Sigma and Power BI * Support .NET application modernisation and API development ...

maintainable code Working with shared/common government tech stacks (Node.js, PostgreSQL, Redis) Investigating and resolving technical issues across the stack Applying secure development practices, including OWASP principles and vulnerability management Collaborating with stakeholders and communicating technical concepts clearly Tech stack includes: Node.js, HAPI (web framework) API development … DevOps, Jenkins, GitHub Actions) Jira and Azure DevOps for workflow management What we're looking for: Active SC Clearance (essential) Strong experience with Node.js development in production environments Ability to communicate with both technical and non-technical stakeholders Experience breaking down work, refining backlog items, and defining acceptance criteria ...

join our engineering team. This role offers the opportunity to work on scalable systems, modern applications, and cloud-based infrastructure while contributing to the development of innovative digital products and services. As part of a collaborative Agile team, you will work closely with engineers, product managers, designers, and other … technical design, architecture, and solution planning activities. Collaborate with cross-functional teams to deliver projects and product enhancements. Troubleshoot, diagnose, and resolve issues across development and production environments. Promote high standards of code quality, testing, and engineering best practice. Participate in Agile ceremonies and contribute to continuous improvement initiatives. ...

join our engineering team. This role offers the opportunity to work on scalable systems, modern applications, and cloud-based infrastructure while contributing to the development of innovative digital products and services. As part of a collaborative Agile team, you will work closely with engineers, product managers, designers, and other … technical design, architecture, and solution planning activities. Collaborate with cross-functional teams to deliver projects and product enhancements. Troubleshoot, diagnose, and resolve issues across development and production environments. Promote high standards of code quality, testing, and engineering best practice. Participate in Agile ceremonies and contribute to continuous improvement initiatives. ...

/.NET, TypeScript or C++. Strong AWS and cloud-native engineering experience. Experience with Docker, Kubernetes and event-driven architectures. Strong backend engineering and API development experience. Experience building scalable distributed systems. Strong engineering mindset with a passion for modern technologies and AI tooling. Highly Desirable Commodity trading ...

production systems and own their reliability Tech Stack Skills: Language: C# on .NET (primary, and what youll write every day) Frameworks: ASP.NET Core (Web API), Azure Functions (isolated worker) Database: SQL Server, accessed via Entity Framework Core and/or Dapper (youll write queries, design schemas, and optimise performance … foundation . The Azure-specific skills can be learned on the job. Requirements: You Must Have 7+ years professional software development experience, primarily in C#/.NET, including time leading, mentoring, or coaching other engineers People leadership: youve coached, mentored, or line-managed developers, and you get satisfaction from ...

BENEFITS £50-60k salary depending on experience Hybrid working - 4 days per week on-site, 1 day remote Modern technology stack and greenfield development opportunities Opportunity to mentor and lead a growing engineering team High level of ownership and influence across architecture and delivery Collaborative and ambitious engineering … .NET MAUI mobile applications - contributing from concept through to deployment. ESSENTIAL SKILLS Strong commercial experience with C#/.NET Modern .NET 8/10 development experience Blazor/Razor Components ASP.NET Core REST API development Entity Framework Core AWS infrastructure experience MySQL CI/CD pipelines using ...

London, London Engineering Manager – Software & ML About this role We are looking for a Software Engineering Manager who brings a solid foundation in modern development and some experience with Machine Learning environments . Be one of the first applicants, read the complete overview of the role below, then send … Collaborate with Product Managers and Data Scientists to ensure ML models are effectively integrated into our production software. Build Robust Systems: Oversee the development of platforms that are performant, secure, and capable of handling the unique deployment needs of AI-powered features. Optimize Delivery: Enhance engineering and agile processes ...

Agentic AI tooling and orchestration frameworks LangChain/LangGraph PyTorch and ML libraries REST APIs Docker and containerisation CI/CD pipelines Git-based development workflows What we're looking for 4-6 years' experience within Software Engineering, AI Engineering, or Machine Learning Engineering roles Strong hands-on Python … engineering practices Exposure to Agentic AI frameworks or autonomous AI workflows Experience working with Azure and Databricks Good understanding of backend engineering and API development Experience collaborating across cross-functional engineering and product teams Ability to mentor or support junior engineers Strong communication and problem-solving skills Package ...

seeking Software Engineers and Senior Software Engineers to support the delivery of secure, scalable, and resilient digital services. You will contribute to the design, development, testing, and deployment of software solutions while collaborating with multidisciplinary teams in an agile environment. Senior Software Engineers will also provide technical leadership, guide … technical discussions. Implement robust, scalable, and maintainable code. Collaborate with product managers, architects, and engineers. Support testing, deployment, and operational activities. Follow secure software development and DevOps practices. Contribute to continuous improvement initiatives. Additional Responsibilities for Senior Software Engineers Lead technical design and architecture discussions. Establish engineering standards ...

platforms which are fundamental to delivering strategic business goals. What you will do Reporting to the Lead Engineer (Integration), this role supports the design, development, and maintenance of custom integrations that connect A&O Shearman’s key legal systems, and which support the ingestion, time recording, and document storage … continuous improvement of QA processes and tools. Support the Enterprise Architecture & Technology Platforms leadership team to collectively define, implement and operate the firm’s development of software solutions and tooling. Work with stakeholders from Enterprise Architecture, Data Governance and Information Security to ensure solutions are performant, compliant and secure. ...

platforms which are fundamental to delivering strategic business goals. What you will do Reporting to the Lead Engineer (Integration), this role supports the design, development, and maintenance of custom integrations that connect A&O Shearman’s key legal systems, and which support the ingestion, time recording, and document storage … continuous improvement of QA processes and tools. Support the Enterprise Architecture & Technology Platforms leadership team to collectively define, implement and operate the firm’s development of software solutions and tooling. Work with stakeholders from Enterprise Architecture, Data Governance and Information Security to ensure solutions are performant, compliant and secure. ...

platforms which are fundamental to delivering strategic business goals. What you will do Reporting to the Lead Engineer (Integration), this role supports the design, development, and maintenance of custom integrations that connect A&O Shearman’s key legal systems, and which support the ingestion, time recording, and document storage … continuous improvement of QA processes and tools. Support the Enterprise Architecture & Technology Platforms leadership team to collectively define, implement and operate the firm’s development of software solutions and tooling. Work with stakeholders from Enterprise Architecture, Data Governance and Information Security to ensure solutions are performant, compliant and secure. ...

platforms which are fundamental to delivering strategic business goals. What you will do Reporting to the Lead Engineer (Integration), this role supports the design, development, and maintenance of custom integrations that connect A&O Shearman’s key legal systems, and which support the ingestion, time recording, and document storage … continuous improvement of QA processes and tools. Support the Enterprise Architecture & Technology Platforms leadership team to collectively define, implement and operate the firm’s development of software solutions and tooling. Work with stakeholders from Enterprise Architecture, Data Governance and Information Security to ensure solutions are performant, compliant and secure. ...

Azure CLI used regularly for automation, operational tasks, and reducing manual intervention. Azure Integration Services: proficient in Logic Apps, Service Bus, Event Grid, and API Management for integration design and implementation. API Development: solid experience with SOAP and REST APIs, including design, development, and secure management. … Summer event and 4 sponsored weekends a year. If you’re an Azure Cloud Engineer looking for a career defining opportunity with progression and development, then please drop Lee at MARS an application. MARS Recruitment is an equal opportunities employer and positively welcomes applications from suitably qualified applicants regardless ...