51 to 75 of 121 API Development Jobs

Python Developer- DevOps & PostgreSQL

Hiring Organisation
Vallum Associates
Location
United Kingdom
IR35 500GBP/Day Job Description: Python developer responsible for building scalable automation solutions to streamline database operations. Required Skills. Hands on experience with API development using Python and FastAPI. Strong problem-solving, debugging, and analytical skills. Responsibilities: Design, develop and maintain automation solutions for databases operations … rollouts Build and Integrate API for Database Management Operations and automation workflows Troubleshoot automation issues across scripting, API s and containerized environments. Containerize and deploy application/services using Docker and Kubernetes Administration for Kubernetes Resources (Pods, Ingress, Services, Secrets, CRDs, etc) Nice to have Exposure on enhancing ...

Data Integration Developer

Hiring Organisation
Hays Technology
Location
Birmingham, West Midlands, West Midlands (County), United Kingdom
Employment Type
Contract
Contract Rate
£500 - £525/day £525 outside IR35
MariaDB Database Backups from Learning Pool - Existing Data Lake assets - Power BI consumption layer In parallel, they are implementing Learning Pool User Provisioning via API, enabling automated CRUD operations for LMS accounts. A dedicated resource is required to deliver the ingestion pipelines, modelling, API integrations, and operational components. … API Development - Build integration to the Learning Pool External Extended API for Create, Retrieve, Update, and Delete LMS users. - Implement all mandatory and optional schema attributes, including: Organisation hierarchy Position hierarchy Manager/appraiser assignments Custom fields Preferences Implement robust error-handling for all LP error codes. ...

Associate Software Engineer

Hiring Organisation
X-On Health
Location
Woodbridge, Suffolk, East Anglia, United Kingdom
Employment Type
Permanent
Salary
£35,000
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 ...

Graduate AI Software Engineer

Hiring Organisation
X-On Health
Location
Woodbridge, Suffolk, East Anglia, United Kingdom
Employment Type
Permanent
Salary
£35,000
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 ...

Junior Java Developer

Hiring Organisation
Cook Systems International
Location
Memphis, Tennessee, United States
Employment Type
Any
Salary
USD Annual
support test execution including system level and integration tests. Resolve production problems of medium to high complexity. Duties would include Web Service/API development, Graphical User Interface Design & Development in the Web environment. The successful candidate should be able to demonstrate the ability to develop ...

Frontend Developer

Hiring Organisation
Intent HQ
Location
United Kingdom
production-quality experiences. A product-oriented mindset—focused on usability, business value, and the “why” behind features. Solid Fullstack fundamentals with Node.js or Python , API development, and debugging across the stack. Understanding of testing best practices, CI/CD workflows, and cloud-native development. Nice to Have Experience … clean, intuitive UX. Experience with Next.js , monorepos, or modular architectures. Familiarity with any part of the company’s tech ecosystem. Tech Environment Agent & AI Development Google ADK, Mastra, MCP (Model Context Protocol), Agent-to-Agent systems Frontend TypeScript, React, Redux Next.js Shadcn, Material UI, Tailwind CSS Backend & APIs Python ...

Backend Software Engineer

Hiring Organisation
Bruin Financial & Professional Services
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £650 per day
office, Tuesday–Thursday), the successful candidate will be responsible for designing, developing, and maintaining modern cloud-based systems. You will work across backend development, DevOps, and infrastructure as code, collaborating closely with global teams in Australia, the U.S., and locally in Manchester. Key Responsibilities: Backend Development (50%) Design … collaboration with Product Owners. DevOps/Cloud Operations (40%) Work with AWS to manage, optimise, and secure cloud infrastructure. Deploy and maintain services across development, testing, and production environments. Detect and prevent security threats, including account takeover attempts. Drive continuous improvement in technical standards, tools, and processes. Infrastructure ...

Python Developer

Hiring Organisation
Infoplus Technologies UK Ltd
Location
Sheffield, South Yorkshire, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
From £400 to £420 per day
Description: Python developer is responsible for building scalable automation solutions to streamline database operations. Required Skills. Hands on experience with API development using Python and FastAPI. Strong problem-solving, debugging, and analytical skills. Responsibilities: Design, develop and maintain automation solutions for databases operations and rollouts Build and Integrate … API for Database Management Operations and automation workflows Troubleshoot automation issues across scripting, API s and containerized environments. Containerize and deploy application/services using Docker and Kubernetes Administration for Kubernetes Resources (Pods, Ingress, Services, Secrets, CRDs, etc) Nice to have Exposure on enhancing observability with knowledge ...

MuleSoft Developer

Hiring Organisation
University of the Arts London
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£44,375 - £57,344 per annum
solving complex technical challenges and wants to make a real impact in a creative, forward-thinking environment. Experience Strong knowledge and experience in integration development, with a specific focus on MuleSoft Anypoint platform. Strong knowledge of API development, integration patterns, and data transformation using DataWeave. Proficiency …/CD tools (e.g. Jenkins, Azure DevOps). Familiarity with enterprise systems integration (e.g. Salesforce, Moodle) and protocols (REST, SOAP, JMS). Understanding of API security standards (OAuth 2.0, SAML, encryption). UAL is a world-class University shaping the creative industries worldwide, with staff having access ...

Software Developer

Hiring Organisation
Sanderson Recruitment
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£60,000
Looking For: Essential Skills Strong proficiency in .NET (C#, ASP.NET) Experience working with SQL Server Familiarity with Azure services Solid understanding of REST/API development Experience with Angular Proficiency in TypeScript, JavaScript, HTML, CSS Good understanding of Agile methodologies , including Scrum Desirable Skills Microservices architecture NServiceBus ...

Mainframe Developer with CICS Webservices

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £350 to £400 per day
week Key Skills Required Mainframes CICS Webservices Required Skills Experience working in ZOS Connect EE and DB2 REST, with extensive knowledge in CICS webservices. Development experience using FileAid, Xpeditor, IBM Explorer for z/OS, and Visual Studio. Proficient with SOAP, WSDL, and JSON, with a comprehensive understanding … including OOP and functional programming (Java 8+). Familiarity with Spring Boot annotations, configuration, and how it simplifies Spring application setup and deployment. RESTful API development experience. Option 2: Integration & Middleware Skills Hands-on experience using DataPower appliances. Development experience using XSLT, Gateway Script, and XPath. ...

Backend Software Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Manchester, North West, United Kingdom
Employment Type
Permanent
Salary
£45,000
part of a cross-functional team responsible for designing, building, and evolving high-quality digital products. You'll contribute across the full development lifecycle, with a strong focus on backend services, APIs, cloud infrastructure, and performance - while continuing to grow your technical depth in a supportive engineering culture. What … engineering standards, knowledge sharing, and continuous improvement What we're looking for Experience building web applications using a modern backend stack Strong fundamentals in API development and relational databases Hands-on experience with .NET Core, C#, TypeScript , and React Exposure to cloud platforms and Infrastructure as Code Familiarity ...

Data Scientist with Python AI/ML

Hiring Organisation
Accord Tecnologies.Inc
Location
Atlanta, Georgia, United States
Employment Type
Any
Salary
USD Annual
Python & AI/ML with deep expertise in backend engineering, LLM-based applications, RAG architectures, and AI agent frameworks. You will lead the design, development, and deployment of production-grade AI systems built on Python, modern LLM tooling, retrieval engines, embeddings, and vector databases. This is a hands … leadership role focused on building scalable and intelligent AI products. Investment Banking and financial domain is needed. Key Responsibilities Lead the architecture and development of LLM-driven applications, AI agents, and RAG-based systems. Provide technical guidance, conduct code reviews, and mentor junior team members. Drive best practices ...

Full Stack Developer - .Net & Angular

Hiring Organisation
Hireful
Location
West Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
experienced Full Stack .Net (C#) Developer, with solid experience in API development , keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input? Are you keen to work in a full stack … building smart APIs, delivering seamless user experiences, and solving real-world customer challenges. This is your chance to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input. CLICK APPLY and send a CV through. ...

Full Stack PHP Developer

Hiring Organisation
CAPSIL Group
Location
Manchester, UK
considering remote applications. This role sits outside of IR35 and has rate of £200 per day. Your day-to-day duties would include: • Development and maintenance of our web applications, including the APIs powering our systems. • Collaborating with product owners to delivery technical tasks. • Working closely with … candidate would be proficient and have experience in/with the following: • PHP • Laravel (proven experience required ) • React/NextJS (proven experience required) • RESTful API Development • MySQL • Git Additional experiences which would be beneficial but not required: • CI/CD Pipelines and automations • Agile Environment (Linear) • Laravel Forge ...

Full Stack PHP Developer

Hiring Organisation
CAPSIL Group
Location
United Kingdom
considering remote applications. This role sits outside of IR35 and has rate of £200 per day. Your day-to-day duties would include: • Development and maintenance of our web applications, including the APIs powering our systems. • Collaborating with product owners to delivery technical tasks. • Working closely with … candidate would be proficient and have experience in/with the following: • PHP • Laravel (proven experience required ) • React/NextJS (proven experience required) • RESTful API Development • MySQL • Git Additional experiences which would be beneficial but not required: • CI/CD Pipelines and automations • Agile Environment (Linear) • Laravel Forge ...

Lead Full Stack Developer

Hiring Organisation
Understanding Recruitment
Location
North London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£43,000 - £75,000 per annum
education sector looking to hire a Lead Full Stack Developer. This role will involve taking ownership of key web projects, guiding the development team, and shaping the architecture of their AWS-based platform to support the organisation's digital growth. As the Lead Full Stack Developer … ensure high-quality delivery across the stack. Skills required for the Lead Full Stack Developer are: * Strong experience with Angular (latest version) for frontend development* Experience with Node.js and backend API development* Experience with AWS serverless architecture, including Lambda, Cognito, and other cloud services* Proven ability ...

Senior Software Engineer - Ansible (Waterford Office, Ireland or Brno Office, Czech Republic)

Hiring Organisation
Red Hat, Inc
Location
Waterford, Ireland
Employment Type
Permanent
Salary
EUR 125,000 - 150,000 Annual
Ansible engineering team is looking for a Senior Software Engineer with a focus on backend web and API development to join our team. In this role, you will work closely with a group of talented engineers helping to improve efficiency and drive results through your contributions. The ideal … bring Significant experience with Python, Django/Django Rest Framework and tools as pytest Experience with Linux Experience with utilizing container management platforms and development environments like Kubernetes, OpenShift, Docker/Docker Compose, and Podman Experience with SQL and relational databases such as PostgreSQL Experience with CI/ ...

Junior Developer - PHP / React - Billingham / Teeside

Hiring Organisation
Reed
Location
Billingham, Cleveland, England, United Kingdom
Employment Type
Full-Time
Salary
£28,000 - £30,000 per annum, Inc benefits
both languages. Technologies PHP/Laravel JavaScript/Typescript (React/Express) SQL and MongoDB. Docker Git Linux/WSL Microservices Agile (Scrum) methodology, API development Salary is up to £30K for this role. Benefits include hybrid working (after probation period), flexible working, 20 days holiday +BH, pension ...

Microsoft Teams App Developer / Microsoft 365 Solutions Developer

Hiring Organisation
Lynx Recruitment Ltd
Location
High Wycombe, Buckinghamshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Fluent UI Backend & Cloud ASP.NET Core (C#) or Node.js Azure Functions and/or Azure App Service Azure SignalR or WebSockets Microsoft Graph API (Teams, users, meetings) Architecture & Concepts Real-time systems Role-based identity and permissions Secure enterprise authentication High-availability, fault-tolerant design What We’re Looking … Essential Proven experience building custom Microsoft Teams applications Strong Microsoft 365 and Azure experience Solid React and TypeScript skills Backend API development experience (C#/.NET or Node.js) Experience with real-time communication patterns Strong enterprise UX mindset — clear, accessible, and foolproof Ability to work with platform constraints ...

Full Stack Developer

Hiring Organisation
Understanding Recruitment
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 per annum
architecture, ensuring the platform is robust and scalable. Skills required for the Full Stack Developer are: * Strong experience with Angular (latest version) for frontend development* Proficiency in Node.js and backend API development* Experience with AWS serverless architecture, including Lambda, Cognito, and other cloud services* Ability to work ...

Full Stack Developer - .Net & Angular

Hiring Organisation
Hireful
Location
West Midlands, United Kingdom
Employment Type
Permanent
Salary
GBP 50,000 Annual
experienced Full Stack .Net (C#) Developer, with solid experience in API development , keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input? Are you keen to work in a full stack ...

Cloud Application Developer

Hiring Organisation
Sanderson Government and Defence
Location
Manchester, North West, United Kingdom
Employment Type
Permanent
Salary
£70,000
architecture and technologies in AWS environments. Experience with web application services such as NGINX, Apache, JBoss. Experience of Test Driven or Behaviour Driven development. API development and integration (preferably using Go but not essential). Experience with monitoring systems e.g., ELK, Nagios, New Relic, DataDog, Splunk etc. Working ...

IT Software Developer

Hiring Organisation
Ideal Personnel and Recruitment Solutions
Location
Milton Keynes, Buckinghamshire, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £50,000 per annum
Consultant. We’re looking for someone who can bring enthusiasm and energy with them into the existing team. Duties and Responsibilities: To perform software development of delivered Infor M3 objects or the creation of new objects using Java programming language & associated tools and frameworks To analyse and interpret client … requirements To effectively interpret functional specifications and translate into technical software applications and/or design documentation Requirements: Java development or any other programming language experience Modern Web Technologies (Angular, TypeScript, JavaScript, CSS, HTML5, Node) SQL Use of REST APIs (JSON/XML) Experience across the board with ...

Backend Software Engineer C# .Net SQL - Sports Trading

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
earning substantial bonuses. What's in it for you: Salary to £90k 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 Backend Software Engineer 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 ...