1 to 25 of 242 Permanent API Development Jobs in the UK

Senior .Net Developer, C#/VB.Net, API, SQL, NW London to £85K A Back End Developer is required to join this established financial software house based in North London. They work with some of the leading brands in retail and media, offering financial management systems developed in house … required with expertise in Visual Basic .NET, C#, SQL Server, and SAP Business One integration. The ideal candidate should have strong skills in RESTful API development, database optimization, and Azure DevOps pipeline management. Knowledge of API security, CI/CD automation, and Swagger documentation is recommended. Responsibilities ...

Senior .Net Developer, C#/VB.Net, API, SQL, NW London to £85K A Back End Developer is required to join this established financial software house based in North London. They work with some of the leading brands in retail and media, offering financial management systems developed in house … required with expertise in Visual Basic .NET, C#, SQL Server, and SAP Business One integration. The ideal candidate should have strong skills in RESTful API development, database optimization, and Azure DevOps pipeline management. Knowledge of API security, CI/CD automation, and Swagger documentation is recommended. Responsibilities ...

define technical requirements, make trade-offs and ensure that solutions are both sustainable and maintainable in the long term. Experience with mobile app development, particularly React Native, is a strong plus and a passion for promoting wellbeing and reducing stress through technology is essential. This role requires wearing many … including monitoring and maintenance Passionate about building innovative solutions and thriving as an individual contributor (IC) within a dynamic team Experience with mobile app development (React Native) is a plus, especially for those with strong web frontend experience An interest in reducing stress and promoting wellbeing through technology Experience ...

powered applications, intelligent agents, APIs, and integrations while ensuring solutions align with enterprise architecture, security standards, and AI governance policies.**Essential Responsibilities****AI Solution Development*** Design, develop, deploy, and maintain AI-powered applications, intelligent agents, and automation solutions.* Build AI workflows utilizing Large Language Models (LLMs), Retrieval Augmented Generation … practical solutions that deliver measurable business value.* Monitor AI solution performance and continuously improve accuracy, reliability, cost efficiency, and user experience.**Full-Stack Application Development*** Design, develop, test, and maintain modern web applications using front-end and back-end technologies.* Build secure RESTful APIs, microservices, and system integrations.* Develop ...

days onsite is mandatory) Rate: £400 - £475 Role Summary We are looking for a highly skilled Application Developer with strong expertise in identity API development, data ingestion and transformation, and event-driven (Pub/Sub) architectures . This role focuses on building secure, scalable identity and access workflows … orchestrate identity provisioning and identity lifecycle management. Build policy-based orchestration workflows for adaptive authentication and contextaware access using industry standards (like OPA). API Development Design, build, and secure RESTful APIs and backend services supporting identity, provisioning, and governance workflows. Integrate APIs with our new authentication service ...

days a week onsite)- £40-50k depending on experience We're looking for a Mid-Level Node.js Developer to join a growing development team working on a technology led QA and automation platform. This is a hands on development role where you'll be building and improving … using Node.js and TypeScript. You'll work closely with other developers and wider technical teams in a collaborative, TDD focused environment, contributing to the development of reliable, scalable software. Skills & Experience Required- 2-3 years of commercial experience developing applications with Node.js Strong knowledge of Typescript Good understanding ...

range of well-known clients. You'll work across backend services, APIs and cloud infrastructure, while also having the opportunity to contribute to frontend development where appropriate. Working within a collaborative product team, you'll be involved throughout the software development lifecycle, helping to deliver secure, high-performing … application architecture. Contribute to technical discussions and continuous improvement initiatives. Tech Stack Essential C# .NET/.NET Core TypeScript REST APIs Microsoft Azure Backend Development API Development Desirable React Node.js Azure Functions CI/CD Infrastructure as Code Docker Microservices Headless CMS Cloud-Native Development About ...

range of well-known clients. You'll work across backend services, APIs and cloud infrastructure, while also having the opportunity to contribute to frontend development where appropriate. Working within a collaborative product team, you'll be involved throughout the software development lifecycle, helping to deliver secure, high-performing … application architecture. Contribute to technical discussions and continuous improvement initiatives. Tech Stack Essential C# .NET/.NET Core TypeScript REST APIs Microsoft Azure Backend Development API Development Desirable React Node.js Azure Functions CI/CD Infrastructure as Code Docker Microservices Headless CMS Cloud-Native Development About ...

build, test and support market-leading cloud-based software for UK and NL services, as well as wider international clients. Working within a collaborative development team, you will deliver secure, high-quality applications across the full software lifecycle, using Microsoft Azure, C#/.NET, Angular and modern delivery pipelines. … delivery on active projects and contribute to stable, well-tested releases. In the medium term, you will shape new external software solutions and influence development standards, architecture and quality. Over time, you will broaden your technical scope, develop your mentoring capability and build a pathway into greater technical leadership ...

Tech: C# .Net, ASP.NET, WPF, MySQL Challenge: Greenfield High Data Throughput platform, API development, industry specific challenges Firm: Well-known fintech50 business, City of London, 10 man flat Dev Team Pay: 80k, Bonus- training budget, Pension, Life/Health, Some Flex Working Development Team Lead Fintech Quant … Lead Developer will Manage the Dev. team including recruitment Build and deliver business requirements Collaborate with Product Owner on defining development requirements and schedule Become enlightened on the system architectureThe environment is that of Facebook or Google, relaxed open with time to think and make the right decisions. ...

/d Umbrella inside IR35 About The Project The Developer Experience (DevX) Standards and Controls function is building a platform for control owners and development teams to manage/view their compliance with a range of software development controls. The candidate would be working on Kotlin and Java … built using modern coding techniques. Role purpose/summary Experience in Kotlin (or significant Java experience with a willingness to learn Kotlin) Experienced in API development, SQL/databases, HTML/Javascript Excellent writing skills and attention to detail in code Proactive person who will not wait ...

though also like the idea of the equally important social/client-facing aspect of the role. The role is responsible for defining the development architecture across a blend of in-house bespoke solutions and 3rdparty products and helping to shape the longer-term strategic development architecture … developing architecture strategy and target architecture model. You will be working closely with delivery team members to coach and promote best-practice solution development architecture as well as supporting business analysts and product owners in planning and story-mapping for new development. You will act as technical design authority ...

Ideally looking for experience in - expertise in LookML Semantic model Development - Development of custom visualisations using Looker API - Development of custom calculations using link vertex AI - Creation of LookML dashboards - Ability to use strong Github expertise Head of Data, Analytics & Digital Transformation Manchester City Centre, Greater ...

Full-Time/Contract TBA Job Summary: We are seeking an experienced Software Developer with strong skills in .NET technologies, Azure cloud services, REST API development, and SQL Server. The ideal candidate will have a proven track record in building scalable business applications, working in Agile teams … both backend and frontend environments. Job Description: We are seeking an experienced Software Developer with strong skills in .NET technologies, Azure cloud services, REST API development, and SQL Server . The ideal candidate will have a proven track record in building scalable business applications, working in Agile teams ...

Full-Time About MAXTRAMAX MAXTRAMAX delivers innovative technology solutions that help organizations improve efficiency, security, and operational performance. Our expertise spans Artificial Intelligence, Software Development, Digital Transformation, Network Infrastructure, Cybersecurity, and Defense & Security Technology. We are expanding our AI capabilities and are seeking an experienced AI Software Engineer … implement emerging AI technologies. Collaborate with software developers, data engineers, and project stakeholders. Prepare technical documentation and architecture specifications. Support the full software development lifecycle using Agile and DevSecOps practices. Required Qualifications Bachelor's or Master's degree in Computer Science, Artificial Intelligence, Software Engineering, Data Science, Mathematics ...

Engineering community to develop our data and MLOps capability infrastructure Strong experience in software engineering with proficiency in a language such as Python for API development, data engineering and automation tasks A background in working with storage solutions such as PostgreSQL, MySQL, and BigQuery Experience in API … development using tools such as FastAPI or Flask , enabling data access and integration across systems Solid knowledge of cloud platforms (GCP and/or AWS), with the ability to design and deploy data solutions at scale Experience with IAC and CI/CD pipelines to ensure reliable, repeatable ...

London, United Kingdom | Posted on 04/08/2026 Work Experience Software Engineer, SolidWorks API, C#, .NET, DriveWorks, AEC, Design Automation, CAD Developer, C# Developer, .NET Developer, SQL, DAC, VBA, Python, PowerShell, CAD Automation, API, Scripting, Automation Developer City London Province City of London Country United Kingdom … DOE+ Car Allowance or Company Car Location - Hybrid (Dartford, Nottingham, Sheffield or Manchester) Are you a C#/.NET developer with expertise in SolidWorks API and design automation? Join a prestigious industry leader in construction innovation and technology solutions, dedicated to shaping the future of the sector through advanced ...

Development Manager (Platform) is responsible for leading the day-to-day development and delivery of SHG’s in-house reservation system, Hermes, built primarily in .NET. The role ensures highquality engineering, effective Agile ways of working, and the smooth delivery of enhancements, maintenance and integrations across the platform. … develop a team of software engineers, inherit and strengthen an established team culture, and work closely with the Solution Architect to ensure all development aligns with architectural standards and the wider technology strategy. Key Responsibilities: Manage the planning, delivery and quality of all development work on the Hermes ...

will play a pivotal role in architecting and developing our next-generation web application and API. This role requires technical leadership, hands‐on development, and mentoring of junior developers. You will drive the adoption of best practices, ensuring scalability, security, and performance. If you are passionate about software development … eligible for visa sponsorship only for candidates that are already based in the UK. Key Responsibilities Technical Leadership: Lead the technical design and development of scalable, secure web applications and APIs, driving best practices across the development lifecycle. Architecture & Design: Oversee system architecture decisions, ensuring alignment with business ...

Lead Developer/Team Lead – FintechTech: C# .net, Azure, SQL, Team City, GIT, TFSChallenge: Greenfield Trading platform, API development, industry specific challengesFirm: Well-known Insurtech software business, West London, 10 man flat Dev TeamPay: 65k, Bonus- 750 training budget, Pension, Life/Health, Some Flex WorkingQuant is urgently … looking for a Lead Developer/Development Manager to join our high profile client. Current challenges include cloud migration, greenfield trading platform development, and bank based API creation. Our client is a well known fintech software house in the City. Day to Day the Lead Developer/ ...

world work better for people. Overview We are looking for an AI Developer to join our dynamic team and contribute to the design, development, and deployment of AI-powered applications and intelligent workflows. The ideal candidate will have a strong background in Python development, experience integrating … into production systems, and the ability to build scalable, secure, and high-performance applications. Experience with data processing, cloud-native architectures, and modern AI development patterns will be highly valued. Responsibilities Develop, test, and maintain AI-powered applications and intelligent workflows using Python in a cloud-native environment Design ...

perfect time to join us! About the Role Level:4 Department: Technology Location: London I Southampton Contract type: Permanent Quilter is building a new API and Integration Platform. As API Product Owner you will own the "what and when" of that platform, turning the API strategy into … prioritised, deliverable backlog and ensuring each API we build delivers real value to integrating organisations. You will work hand-in-glove with the Lead Integration Platform Architect (who owns the "how"), our engineering teams and our delivery partner, and you will play a central role in proving the platform ...

perfect time to join us! About the Role Level:4 Department: Technology Location: London I Southampton Contract type: Permanent Quilter is building a new API and Integration Platform. As API Product Owner you will own the "what and when" of that platform, turning the API strategy into … prioritised, deliverable backlog and ensuring each API we build delivers real value to integrating organisations. You will work hand-in-glove with the Lead Integration Platform Architect (who owns the "how"), our engineering teams and our delivery partner, and you will play a central role in proving the platform ...

Healthcare sectors . They are now looking for a talented Senior Full Stack Developer to join their engineering team and contribute to the continued development of their platform, editor and supporting cloud services. Responsibilities: Build and deliver new functionality across the core platform and React-based editor , supporting … discovery, sprint planning, roadmap discussions, demonstrations and retrospectives Evaluate technical challenges and contribute to architectural decisions and system improvements Diagnose and resolve application and API issues across both local and cloud-based environments Improve the performance, reliability and security of applications and services Contribute to the evolution ...

perfect time to join us! About the RoleLevel:4Department: TechnologyLocation: London I SouthamptonContract type: PermanentQuilter is building a new API and Integration Platform. As API Product Owner you will own the "what and when" of that platform, turning the API strategy into a prioritised, deliverable backlog … ensuring each API we build delivers real value to integrating organisations. You will work hand-in-glove with the Lead Integration Platform Architect (who owns the "how"), our engineering teams and our delivery partner, and you will play a central role in proving the platform through priority business ...