26 to 50 of 95 API Development Jobs in the UK

translate business requirements into scalable technical solutions. Work with structured and unstructured data sources, ensuring quality, integrity, and availability of data. Contribute to the development of data models and data architecture best practices. Implement and optimise ETL processes using Python and modern frameworks. Maintain clear and reusable codebases across … governance, security, and compliance processes across all data workflows. Key Skills & Experience Essential: Active DV (Developed Vetting) Security Clearance Strong proficiency in Python and API development Experience or strong interest in data engineering, data pipelines, and automation Solid understanding of TypeScript/JavaScript and back-end integration principles ...

design build deploy) Contributing to architecture and best practices Collaborating closely with product and engineering teams What they’re looking for: 5+ years’ software development experience Strong Next.js/React/TypeScript background Experience building scalable web applications Solid understanding of SSR, SSG & frontend performance API development ...

Responsibilities Develop, enhance, and maintain Java-based applications and microservices. Work within cross-functional Agile teams (Developers, BAs, QAs, DevOps). Contribute to API development, integration, and backend service build. Deliver clean, testable, maintainable code aligned with best practices. Participate in code reviews, pair programming, and continuous improvement. ...

SoftwareDeveloper(API Development/Backend Node.js, C#, Fullstack) Birmingham, West Midlands (Hybrid 1 day onsite a week) 55k + Benefits Were partnering with a leading enterprise software house in Birmingham that is expanding its engineering team. Theyre looking for a Software Engineer with strong API and backend … development experience to work on complex, high-performing systems used by global clients click apply for full job details ...

Potential for long-term extensions or permanent conversion 🛠️ Tech Stack/Environment Python (core backend focus) TypeScript + React (for fullstack feature ownership) AWS API development Modern cloud-based product environment Collaborative scaleup engineering culture 🎯 What They’re Looking For Strong Python backend engineering experience Comfortable owning API … service-layer development Ability to contribute across the stack when needed using React/TypeScript Experience working in product-led, fast-moving environments Engineers who can ramp quickly and deliver from day one They’re moving quickly, with interviews taking place this week, and can get people started within ...

Inside IR35 Contract Overview We are looking for a Python AI Engineer (with Databricks exposure) with hands-on experience in Generative AI, backend development, and database-driven applications. The role involves designing and building AI-enabled applications, developing APIs and services to deploy AI models, and integrating them with … enterprise databases and cloud platforms. The candidate should be comfortable working across AI solution design, backend development, and data engineering. Key Responsibilities Design and develop AI and Generative AI applications using Python. Build backend services and APIs using Flask or Django for AI-powered systems. Work with enterprise databases ...

. Exposure to analytics, reporting, and BI tools such as Apache Superset, Lightdash or OpenSearch Willingness to work across the stack by contributing to API development and, at times, UI components (Vue.js, Zoho, or similar). Excellent communication and collaboration skills, with the ability to work independently … Regular offsites to enjoy face-to-face time and to bond further with your colleagues A dynamic environment that offers room for growth and development to all employees A friendly, international, and multicultural team We are proud to be an equal opportunity employer. We celebrate diversity and are passionate ...

/finance experience. Experience with writing unit and integration tests and maintaining CI/CD pipelines. Preferred Qualifications & Experience Experience with GraphQL or REST API development. Knowledge of asynchronous programming, message queues, or real-time streaming architectures. Familiarity with cloud platforms (AWS, GCP, Azure) and container orchestration (Kubernetes/ ...

Role purpose/summary Core Skills: Backend: Java, Spring Boot, SQL/Report Writing Cloud: AWS, EBSA Additional Skills: Frontend: React, Next.js (non-essential) API development, microservices, CI/CD pipelines, containerization (Docker/Kubernetes), Greenfield development experience All profiles will be reviewed against the required skills ...

SaaS business is hiring a Senior Back End Engineer to help build and evolve its platform, with a strong focus on modern AI-assisted development workflows. This is a hands-on role suited to someone who is already leveraging AI engineering tools day to day to improve speed, quality … across a modern TS/JS stack Working alongside legacy PHP systems, helping evolve and modernise the platform Using AI engineering tools to accelerate development, debugging and delivery Designing scalable services and clean system boundaries Integrating third-party APIs including AI, analytics and external services Collaborating closely with product ...

libraries such as: tidyverse (data manipulation and visualization) data.table (high-performance data processing) caret/mlr3 (machine learning) shiny (interactive dashboards) plumber (API development) Create reusable R modules and packages for internal use Configure and manage R environments across local, server, and cloud platforms Optimize R code … privacy standards Promote coding standards, testing, and peer reviews for R scripts Evaluate and recommend new tools or libraries to enhance productivity Working with development teams to facilitate package development and deployment Configuring and managing package sources, including mirrors and custom repositories Ensuring the availability and accessibility ...

needs, the company’s platform features and technologies from the ground up. Experience needed as a Back End Developer: 3+ years of Node.js development Type Script/Strong JavaScript skills React REST API development ...

C# .NET Developer (C#, .NET, Azure) position, you should have: Strong commercial experience with C# and modern .NET/.NET Core Experience with Azure development and Azure DevOps (CI/CD) Experience with SQL Server or Entity Framework and API development Good understanding of dependency injection, performance … secure coding Strong communication skills and stakeholder engagement experience This C# .NET Developer (C#, .NET, Azure) opportunity will accelerate your development, giving you exposure to a range of projects rather than a single system. Youll work alongside experienced engineers and have a clear route into Project Leadership ...

role focuses on developing reliable, high-performance backend services and supporting the infrastructure they run on. You’ll work primarily with Python, contributing to API development, system design, and automation, while ensuring everything is robust, maintainable, and production-ready. You’ll be part of a collaborative, remote-first … engineering team, working across the full lifecycle of backend development—from design through to deployment and ongoing improvement. What You’ll Do Build & Scale Backend Services Develop and maintain backend services using Python (FastAPI or similar frameworks) Design systems that are scalable, efficient, and reliable Turn product and technical ...

role focuses on developing reliable, high-performance backend services and supporting the infrastructure they run on. You’ll work primarily with Python, contributing to API development, system design, and automation, while ensuring everything is robust, maintainable, and production-ready. You’ll be part of a collaborative, remote-first … engineering team, working across the full lifecycle of backend development—from design through to deployment and ongoing improvement. What You’ll Do Build & Scale Backend Services Develop and maintain backend services using Python (FastAPI or similar frameworks) Design systems that are scalable, efficient, and reliable Turn product and technical ...

will be joining a team that is actively investing in AI capabilities, cloud architecture, and next-generation data platforms , with significant learning and development opportunities. 📊 Salary & Levels 🔹 Junior-to-Mid Level Data Engineer – Up to £120,000 Strong technical foundation with ambition to grow Hands-on builder mindset with … mentor others Both roles come with a bonus and strong long-term progression potential. 🧠 Key Technical Skills Advanced SQL (Postgres strongly preferred) Strong Python development (Pandas essential) Experience with commodities pricing/financial markets Building and maintaining data pipelines (ETL/ELT, streaming) Working with time-series/analytical ...

Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on C# .Net backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City … office on a fulltime basis, Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns ...

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 . You'll lead and grow a team that builds the core software powering our data-driven … 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 ...

seeking a highly skilled and innovative Agentic AI Engineer to join our team and drive the development and deployment of cutting-edge generative AI solutions within the Microsoft ecosystem . This position is well-suited for candidates with a background in software engineering, data science, or machine learning … applications utilizing Microsoft platforms such as M365, Copilot Studio, and Azure AI Foundry, and have at least one year of relevant experience. Strong software development background with proficiency in Python. Experience with API development using FastAPI, Flask, or Django. Knowledge of Docker and containerized deployments. Hands ...

earning substantial bonuses. What's in it for you: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Your role: As a Senior Software Developer within the trading engine team … team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City ...

excellent opportunity to join this innovative and fast-growing AI tech. organisation! Skills/experience 2+ years solid commercial Python coding experience (backend, API development would be great). Good understanding of Docker, Kubernetes, and scalable distributed systems . An Agile mindset and Experience working in agile teams ...

developing, and maintaining data infrastructure to ensure the seamless inflow, data sanitation/consolidation and automated report production for clients. Key Responsibilities: Design and Development: Design, develop, and maintain scalable ETL pipelines to process and integrate data from various sources. Implement data validation routines to ensure data quality … understand data requirements. Database Management: Design and maintain relational database schemas to support business needs. Ensure efficient storage, retrieval, and management of large datasets. API Management: Develop and maintain APIs for data access and integration. Utilize tools like Postman for API testing and documentation. A good understanding ...

IR35 Day rate: Up to £600 per day Duration: Initial 3 months but will most likely extend Start date: ASAP Key words: ElementSuite, Integration, API, Dataflows We are looking for a HRIS system Integration Engineer to connect our Clients core HRIS (ElementSuite) with their AI recruitment tool (Talent.AI … data flow, writing the middleware or scripts to sync these systems, and ensuring that data remains secure and accurate across all platforms. Core Responsibilities - API Development & Mapping: Use REST APIs to create seamless data synchronisation between ElementSuite, Aslan, and Talent.AI. - Workflow Automation: Automate the _Hire-to-Onboard_ journey ...

engineering with clear documentation and stakeholder collaboration. Your Skills and Experience To be successful, you will bring: • Strong Python skills for backend services, SDKs, API development, authentication and testing. • Hands‐on experience working with LLMs, embeddings, prompt engineering, tool calling and RAG design. • Practical knowledge of GCP services ...

engineering with clear documentation and stakeholder collaboration. Your Skills and Experience To be successful, you will bring: • Strong Python skills for backend services, SDKs, API development, authentication and testing. • Hands‐on experience working with LLMs, embeddings, prompt engineering, tool calling and RAG design. • Practical knowledge of GCP services ...