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Developer United Kingdom Jobs

461 Job Offers

Senior Optimizely Developer
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Seeking a Senior Optimizely Developer in London to lead complex development streams for enterprise clients. You'll need 4+ years in .NET and 2+ years with Optimizely CMS, plus cloud and CI/CD expertise. Take ownership, mentor developers, and deliver high-quality, scalable solutions autonomously.
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United Kingdom , London
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Not provided
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360 Resourcing Solutions
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BackEnd Technical Support Developer
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Backend Technical Support Developer role in London combining Node.js, React, TypeScript, and AWS. You’ll solve production issues, debug client problems, and collaborate with customer success teams. Requires 3+ years Node.js, strong JavaScript, REST API, SQL, and Git skills. Includes on-call bonus...
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United Kingdom , London
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50000.00 GBP / Year
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rmg digital
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Senior AI Developer
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Join WorkNest Secure in Leeds as a Senior AI Developer. Build and deploy production AI/ML models using Python, TensorFlow/PyTorch for cybersecurity threat detection. A hybrid role requiring cloud (AWS/Azure) and MLOps experience. Enjoy flexible working while pioneering proactive defence solutions.
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United Kingdom , Leeds
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WorkNest
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Front End React Web Developer
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Join our team in Crick, Northamptonshire as a Front End React Web Developer. This temporary role requires expertise in React, JavaScript, and TypeScript, with a focus on SEO and Google Analytics. You will collaborate with Product Owners to optimize a React-based website, enhancing our online pres...
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United Kingdom , Crick, Northamptonshire
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Broster Buchanan
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Senior GenAI Developer - Innovation Labs
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Lead the design and development of cutting-edge AI services at Citi Innovation Labs in London. This senior role requires deep expertise in Python, AI/ML, and cloud architectures to deliver complex, production-ready solutions. You will drive innovative projects, guiding technology vision and engag...
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United Kingdom , London
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Citi
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Java / Angular Software Developer
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Join a high-performing Agile team in Manchester as a Java/Angular Developer. You will design, develop, and maintain modern full-stack applications using Java, Spring Boot, and Angular. This role requires 5+ years of experience building RESTful APIs and scalable services. Strong skills in SQL/NoSQ...
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United Kingdom , Manchester
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RED Commerce - The Global SAP Solutions Provider
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Software Developer
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Join a top-tier tech team in London's finance sector as a C++ Developer. Work on a cutting-edge, high-throughput data platform using C++ and Python. Enjoy end-to-end SDLC involvement with real influence on key technical solutions. A strong academic background and experience with RESTful microserv...
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United Kingdom , London
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350000.00 GBP / Year
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Hunter Bond
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Software Developer
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Join a leading finance tech team in London as a C++ Developer. Work with top-tier engineers on cutting-edge, high-performance data platforms. Utilize your strong C++ and Python skills to build scalable financial software and RESTful microservices. This role offers end-to-end project involvement i...
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United Kingdom , London
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350000.00 GBP / Year
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Hunter Bond
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Python Developer
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Join a leading London fintech as a Python Developer. Build scalable, high-performance data platforms using Python, REST microservices, and big data tools like Spark & Kafka. Work with elite engineers on innovative finance software and impact the full SDLC. Strong Python, SQL, and data engineering...
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United Kingdom , London
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140000.00 GBP / Year
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Hunter Bond
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Software Developer
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Join a leading London AI startup as a Software Developer. Utilize your expert Python and FastAPI skills to build scalable backend systems powering real-world AI innovation. You'll design high-performance APIs, handle real-time data, and shape the technical roadmap in a dynamic, collaborative envi...
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United Kingdom , London
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100000.00 GBP / Year
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Hunter Bond
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Packaging Developer
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Join our Deodorant Category Technology Centre in Leeds as a Packaging Developer. You will deliver innovative packaging for iconic brands, leading projects from concept to launch. We seek a technical expert with packaging development experience and strong project management skills. Enjoy a competi...
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United Kingdom , Leeds
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Unilever
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Microsoft Dynamics 365 CRM Developer
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Take technical ownership of a customised Microsoft Dynamics 365 CRM platform for a UK organisation. This hands-on developer role requires strong coding skills in D365, JavaScript/.NET, and Power Automate. You will manage wave updates, modernise the estate, and enhance Sales & Customer Insights. E...
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United Kingdom , Coventry
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60000.00 GBP / Year
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IN2 Consult
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Senior Front-End Developer
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Join Citi Tech in London to engineer the future of global finance. As a Senior Front-End Developer, you'll build a greenfield FX Options Trading Platform using React and TypeScript. Collaborate with global teams on real-time data applications and champion modern CI/CD practices. Enjoy a competiti...
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United Kingdom , London
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Citi
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Oracle Report Developer
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Join our IT team in Rochester as an Oracle Report Developer. You will design and optimize reports using Oracle SQL, PL/SQL, and tools like BI Publisher. This role requires 3-6+ years' experience with Oracle ERP databases and performance tuning. We offer a collaborative environment where excellenc...
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United Kingdom , Rochester
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31.31 GBP / Hour
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Outsource UK
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Quantitative Developer
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Join Barclays in London as a Quantitative Developer. You will design and maintain high-performance analytics and trading platforms using Python and C++. This role focuses on the innovative Analytics Service, enhancing library APIs within financial risk and pricing systems. Strong communication an...
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United Kingdom , London
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Barclays
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Frontend Developer - React
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Join Xelix, a fast-growing AI fintech, as a Frontend Developer in London. You'll build scalable React applications using TypeScript and modern CSS, collaborating closely with designers. Enjoy a hybrid role with great benefits like private healthcare, a learning budget, and a dog-friendly office. ...
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United Kingdom , London
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60000.00 - 75000.00 GBP / Year
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Xelix
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Senior Python Backend Software Developer
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Join Xelix, a fast-growing AI scale-up, as a Senior Python Backend Developer. You will build robust, scalable solutions using Python, Django/Flask, and AWS in our London office (hybrid). We offer private medical cover, enhanced leave, and a dynamic environment focused on impact and growth.
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United Kingdom , London
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70000.00 - 95000.00 GBP / Year
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Xelix
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CRM Functional Developer
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Join Dental Directory as a CRM Functional Developer in Witham. You will lead the design and optimisation of our Dynamics 365 CRM & Field Service platform, translating business needs into scalable solutions. We seek strong expertise in D365, Power Platform, and excellent communication skills. Enjo...
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United Kingdom , Witham
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40000.00 - 50000.00 GBP / Year
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360 Resourcing Solutions
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Senior AWS Data Platform Developer
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Join Barclays in Glasgow as a Senior AWS Data Platform Developer. You will build a sustainable data infrastructure using AWS services, Python/Scala, and Apache Spark. Develop high-quality, scalable solutions in a collaborative, agile environment. We offer private medical care, pension contributio...
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United Kingdom , Glasgow
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Barclays
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Junior Dynamics 365 & Power Platform Developer
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Launch your software development career in London with this Junior Developer role. You will build solutions using Microsoft Dynamics 365, Power Apps, and Power Automate, supported by expert training. Develop Power BI reports, provide application support, and help streamline processes. Ideal for a...
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United Kingdom , London
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Not provided
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National Legal Service Solicitors
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About the Developer role

Discover the dynamic world of developer jobs, a cornerstone of the modern digital economy. Developers are the creative and technical masterminds behind the software, applications, and systems that power our daily lives. From the websites we browse to the mobile apps we use and the complex enterprise software running global businesses, developers are the architects of our digital future. This profession involves designing, coding, testing, and maintaining the software that drives innovation across every industry.

A developer's primary responsibility is the entire software development lifecycle. This begins with analyzing user needs and then designing robust software solutions to meet those requirements. The core of the role involves writing clean, efficient, and well-documented code in various programming languages. Developers build and maintain the backbone of applications, which includes creating and managing Application Programming Interfaces (APIs), backend services, and database structures. They are responsible for implementing key architectural patterns like microservices to ensure systems are scalable, reliable, and performant. A significant part of their work involves integrating different systems, such as connecting applications to databases, message queues, and third-party services.

Beyond initial creation, developers are tasked with continuous improvement and maintenance. This includes identifying and fixing bugs, optimizing applications for speed and stability, and implementing security best practices to protect against vulnerabilities. They conduct rigorous testing, including unit and integration tests, to ensure software quality. Furthermore, developers collaborate closely with other teams, such as frontend engineers, quality assurance (QA) specialists, and DevOps teams, to enable seamless continuous integration and deployment (CI/CD) pipelines. In many modern environments, developers also work on containerizing applications using tools like Docker and orchestrating them with platforms like Kubernetes. For senior and leadership roles, responsibilities expand to include mentoring junior team members, managing project timelines, making strategic technology decisions, and overseeing a team's output and professional development.

Typical skills and requirements for developer jobs are diverse. A strong foundation in computer science principles is essential. Proficiency in one or more programming languages (such as Go, Java, Python, JavaScript, or C#) is a fundamental requirement. Developers must understand software architecture, including concepts like RESTful APIs, microservices, and event-driven systems. Experience with databases (SQL and NoSQL), version control systems like Git, and operating systems is standard. As the field evolves, knowledge of cloud platforms (AWS, Azure, GCP), containerization, and infrastructure-as-code is increasingly valuable. Crucially, soft skills are just as important; problem-solving abilities, analytical thinking, clear communication, and the capacity to work collaboratively in a team are highly sought after. Most positions require a bachelor's degree in computer science or a related field, or equivalent practical experience. Whether you are an entry-level programmer or an experienced applications development manager, developer jobs offer a challenging and rewarding career path for those passionate about building the technology of tomorrow.