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Developer United Kingdom Jobs

453 Job Offers

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Full Stack Developer
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Join Barclays in London as a Full Stack Developer, driving innovation within investment banking’s Securitized Products division. Leverage your Angular and Core Java expertise to design high-quality software, mentor teams, and align technical solutions with business goals. Experience with Oracle, ...
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United Kingdom , London
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Barclays
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Senior Front Office Developer
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Senior Front Office Developer sought by Barclays in London to design and deliver high-quality software solutions using Python, Java, and .NET. You will tackle server-side and multi-threaded development in an Agile environment, collaborating across regions. Ideal candidates bring experience in web...
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United Kingdom , London
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Barclays
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Java Backend Developer
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Join our Data Infrastructure team in London as a Java Backend Developer. Drive large-scale pipeline migrations and core platform development using Flink and Lakehouse architecture. We seek an execution-focused engineer with strong Java, Python, Go, and GCP skills, capable of working autonomously ...
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United Kingdom , London
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650.00 - 750.00 GBP / Day
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Randstad
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Developer - Dynamics 365 CE
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Join a high-impact team in Brentford as a **Dynamics 365 CE Developer**. You will design and deliver customisations, integrations, and Power Platform solutions, leveraging **C#/.NET**, **JavaScript**, and **Azure DevOps**. This role offers technical leadership, 30 days holiday, private healthcare...
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United Kingdom , Brentford
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70000.00 - 75000.00 GBP / Year
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360 Resourcing Solutions
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Senior C# / .NET Developer
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Senior C# / .NET Developer sought for a 6-month contract (London, Hybrid) within a top-tier financial institution. You will design high-performance systems for Risk Management and Securities Lending, focusing on complex calculations and API design. Requires 10+ years of experience in Financial Se...
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United Kingdom , London
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550.00 - 585.00 GBP / Day
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Randstad
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Java Backend Developer
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Join a high-performance eBond Booking and Messaging team in London as a Java Backend Developer. You will build and adapt trading workflows, manage trade booking systems, and ensure seamless connectivity to external exchanges. Key requirements include expertise in Java 8+, Multithreading, RESTful ...
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United Kingdom , London
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600.00 - 625.00 GBP / Day
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Randstad
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Full Stack Developer - Apps and Mobile
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Full Stack Developer sought in Manchester to build scalable web and mobile apps using React, Angular, or Vue.js with React Native or Flutter. You’ll master back-end languages like Node.js or Python, manage SQL/NoSQL databases, and deploy on AWS or Azure. Enjoy 25 days holiday, a cycle scheme, and...
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United Kingdom , Manchester
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48000.00 GBP / Year
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360 Resourcing Solutions
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Senior Java Developer (AVP)
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Senior Java Developer (AVP) at Citi in Belfast. Join a global team redefining finance, building high-scale systems that process $5 trillion daily. You will develop robust applications using Core Java, Spring Boot, and Microservices, with hands-on AI tool experience. Enjoy 27 days leave, bonus, pr...
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United Kingdom , Belfast
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Citi
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Front End Developer
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Join Charles Tyrwhitt as a Front End Developer in London. You'll enhance our Salesforce Commerce Cloud platform and lead the migration to PWA or Storefront Next. We seek strong HTML5, CSS3, JavaScript, and React skills, plus ecommerce experience. Enjoy a competitive salary, hybrid working, and st...
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United Kingdom , London
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Charles Tyrwhitt
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SharePoint Developer and Administrator
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Senior SharePoint Developer & Administrator sought in London to lead migration from SharePoint 2016 to modern platforms (SE & Online). This role combines hands-on SPFx development with platform administration, including intranet design, governance, and system upgrades. Requires expertise in TypeS...
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United Kingdom , London
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Eutopia
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IT Integration Developer
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Seeking an IT Integration Developer in London to bridge internal systems with cloud SaaS platforms. You will design secure, event-driven API integrations using Azure Integration Services (API Management, Logic Apps, Functions). Ideal for experts in API security, OAuth 2.0, and middleware developm...
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United Kingdom , London
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80000.00 GBP / Year
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Transact
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Frontend Developer - React
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Join a growing team as a Frontend Developer (React) in London. You’ll build robust UI components using React, Redux, and TypeScript, collaborating on features from Figma designs. We value clean code, testing with Jest/Playwright, and problem-solving. Enjoy a competitive £60k-£75k salary, hybrid w...
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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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Lead Java Developer
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Lead Java Developer sought by Citi in Belfast to define architecture and build scalable, high-performance applications. You will leverage Java, RESTful services, and AI-powered tools while mentoring junior team members. This role demands expertise in clean coding, SOLID principles, and code quali...
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United Kingdom , Belfast
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Citi
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Front End Developer
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Join a high-growth construction tech company as a Front End Developer in Hitchin, UK. You’ll build modern web and mobile apps using React.js and JavaScript, integrating with hardware on live infrastructure projects. Ideal for engineers with 5+ years of experience in agile, fast-moving teams. Enjo...
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United Kingdom , Hitchin
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60000.00 - 70000.00 GBP / Year
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rmg digital
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Fx It Developer
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Join a London-based FX team as an FX IT Developer, building and enhancing front-office trading systems. You’ll collaborate with traders and analysts, using C# or Java and SQL to deliver agile projects. Ideal for recent graduates (2:1+) with a passion for financial markets and strong communication...
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United Kingdom , London
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Crédit Agricole
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Vb6 Developer
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Whitehall Resources seeks a VB6 Developer for a 6-month contract in Shropshire (2 days onsite, rest remote, inside IR35). You will support the critical CESA system within a legacy estate, developing LDC components and resolving defects. Ideal candidates have strong core development skills, experi...
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United Kingdom , Shropshire
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Whitehall Resources Ltd
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Systems Developer
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Join Games Workshop in Nottingham as a Systems Developer. You’ll deliver high-quality code, deconstruct complex problems, and support IT business change projects using Azure Development & Integration Services. Thrive in an agile environment, collaborating on code reviews and technical documentati...
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United Kingdom , Nottingham
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Not provided
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Games Workshop
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Quant Developer – Trading Analytics – Equity Derivatives Tech
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United Kingdom , London
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Citi
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Instructional Designer and E-Learning Developer
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Join LCG as an Instructional Designer and E-Learning Developer in Durham Gate, UK. Design engaging digital learning with Articulate Rise, lead projects from concept to delivery, and collaborate with stakeholders. Requires strong instructional design, project planning, and communication skills. En...
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United Kingdom , Durham Gate
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30000.00 - 32000.00 GBP / Year
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Learning Curve Group
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Senior Salesforce Commerce Cloud Developer
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United Kingdom , London
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70000.00 GBP / Year
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Salt
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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.