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Senior Developer United Kingdom Jobs

104 Job Offers

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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Not provided
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Citi
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Until further notice
Python Counterparty Credit Risk Senior Developer, Vice President
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Senior Python Developer, Vice President role at Citi in London, driving counterparty credit risk applications within the Analytical Calculation Engine (ACE) team. Expert-level Python, derivatives pricing, and CI/CD skills required. Collaborate with Quant and Front Office teams on distributed comp...
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United Kingdom , London
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Not provided
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Citi
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Senior Salesforce Developer
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Senior Salesforce Developer sought to lead Service Cloud and Experience Cloud solutions in London. This hybrid role demands proven Salesforce expertise, Agile experience, and full SDLC proficiency. You will design scalable solutions, leverage CI/CD tools, and collaborate with stakeholders to enha...
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United Kingdom , London
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73000.00 - 85000.00 GBP / Year
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360 Resourcing Solutions
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Senior PHP Developer
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Senior PHP Developer (Symfony) – Leeds, Hybrid (2 days onsite). Up to £65,000. Join a collaborative tech team building scalable web platforms and APIs for a global education leader. You’ll own backend development, refactor code, and mentor juniors. Ideal for a senior engineer with strong PHP, MyS...
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United Kingdom , Leeds
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60000.00 - 65000.00 GBP / Year
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Fynity
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Senior Integration Analyst & Developer
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Senior Integration Analyst & Developer (Oracle) – Fully Remote, £600/day (Outside IR35). Join a major Finance and Project Accounting integration programme. Leverage your 6+ years of Oracle Fusion Cloud expertise, including OIC, SQL/PLSQL, BIP, and VBCS, to design and deliver end-to-end integratio...
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United Kingdom , Greater London
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Not provided
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Outsource UK
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Senior C# Developer
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Senior C# Developer sought by a top London financial institution for a contract role. You will build scalable, high-performance applications using the .NET ecosystem and modern architecture. Key requirements include extensive C# expertise, Agile experience, and familiarity with cloud platforms an...
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United Kingdom , London
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Not provided
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Hunter Bond
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Senior C++ Developer
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Senior C++ Developer sought to shape the future of betting and gaming at Betfred in Manchester. Leverage 8+ years of C++20 and Qt/QML 6 expertise to lead technical direction, design high-performance APIs, and drive DevOps best practices. Join a global leader migrating to a proprietary platform, o...
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United Kingdom , Manchester
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50000.00 - 65000.00 GBP / Year
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360 Resourcing Solutions
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Senior Front End Developer
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Senior Front End Developer sought to shape the future of betting and gaming at Betfred in Manchester. You will join a new team building on a proprietary platform, requiring expert ReactJS, ES2015, and Node.js skills. Key benefits include a £50k-£65k salary, generous bonuses, and enhanced parental...
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United Kingdom , Manchester
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50000.00 - 65000.00 GBP / Year
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360 Resourcing Solutions
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Senior .NET Developer
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Senior .NET Developer sought to shape the future of betting and gaming at Betfred in Manchester. You will leverage expertise in C#, N-Tier architecture, and WebAPI to integrate front ends with back-end services on a proprietary platform. Key requirements include significant commercial .NET experi...
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United Kingdom , Manchester
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50000.00 - 65000.00 GBP / Year
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360 Resourcing Solutions
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Senior Java Developer
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Senior Java Developer sought by Barclays for their LF Custody platform team in Glasgow. This senior technical role focuses on hands-on development and engineering leadership, not people management. You will design and deliver scalable solutions using Java J2EE, Spring, and messaging technologies ...
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United Kingdom , Glasgow
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Not provided
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Barclays
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Senior Intelligent Automation & Low-Code Developer
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Senior Intelligent Automation & Low-Code Developer sought to design and deploy cutting-edge solutions using Microsoft Power Platform and Copilot. This London-based role involves client engagement, mentoring junior developers, and driving AI-driven automation. Ideal candidates have proven Power Pl...
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United Kingdom , London
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Not provided
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Ten10
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Senior Angular Developer
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Senior Angular Developer sought for a hybrid role based in Budapest with monthly travel to Vienna. You will design scalable front-end applications using Angular, TypeScript, and SCSS, collaborating with UX and backend teams. Requires 5+ years of experience, proficiency in Jest testing, and famili...
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Location
United Kingdom
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56000.00 - 67200.00 GBP / Year
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Lawrence Harvey
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Senior Software Developer
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Senior Software Developer needed for a 12-month contract in Warton (hybrid, 1–2 days on site). You’ll develop .NET (C#) desktop applications (WPF/WinForms) integrated with Oracle databases for the RAF’s critical ESS platform. Requires strong C#/.NET, VB6, and WPF/WinForms skills. Earn £34.77 PAYE...
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United Kingdom , Warton
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34.77 - 44.31 GBP / Hour
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Outsource UK
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Senior Java Developer
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Senior Java Developer sought by Citi Belfast to design and deploy microservices and RESTful APIs using Spring Boot. Requires 5+ years of core Java expertise, multi-threading, and Spring Framework proficiency. Join a global banking leader offering hybrid work, 27 days leave, private medical care, ...
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United Kingdom , Belfast
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Not provided
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Citi
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Senior Salesforce Developer
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Senior Salesforce Developer needed in London to drive Public Sector Solutions using OmniStudio, Apex, and LWC. You’ll build on the Salesforce Industries Cloud, implementing OmniScripts, Flows, and custom components. Requires 3+ years’ experience, UK Security Clearance (SC) eligibility, and strong...
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United Kingdom , London
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Not provided
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NTT DATA
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Senior Full Stack Developer
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Senior Full Stack Developer role in London with an innovation-led organisation using AI and digital products to solve complex societal challenges. You’ll own a core platform, build new features, integrate AI, and ensure scalability. Requires strong experience in React, TypeScript, C#, and AWS. A ...
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United Kingdom , London
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65000.00 - 75000.00 GBP / Year
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Data Idols
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Senior Python Developer
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Senior Python Developer needed in Belfast for Citi’s Wholesale Credit Risk Technology team. You will design innovative solutions using Python, FastAPI, and modern AI frameworks like LLMs and RAG. Requires 5+ years of enterprise development experience with CI/CD, Kubernetes, and strong collaborati...
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United Kingdom , Belfast
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Not provided
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Citi
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Senior Java Developer - Fixed Income Algo Technology
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Senior Java Developer role in London, focusing on Fixed Income Algo Technology. You will design low-latency, high-throughput trading components using Core Java, Kafka, and Chronicle. Collaborate directly with Traders and Quants to build robust back-testing frameworks and live trading systems. Ben...
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United Kingdom , London
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Not provided
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Citi
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Senior PHP Laravel Developer
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Senior PHP Laravel Developer sought for an AI-forward organization in Greater Manchester, UK. This role goes beyond standard coding, offering influence over architectural decisions and technical strategy. You will build end-to-end features using Laravel and Vue.js, optimize large-scale data proce...
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United Kingdom , Greater Manchester
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Salary
50000.00 - 70000.00 GBP / Year
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Broster Buchanan
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Senior Integrations Developer - Microsoft / .NET
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Seeking a Senior Integrations Developer to design and maintain software systems using .NET 8, Azure, and SQL Server. You will develop web integrations and APIs, working with internal teams and third-party solutions. This UK-based role requires strong C# and Azure services expertise, with a focus ...
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Location
United Kingdom
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Salary
50000.00 - 55000.00 GBP / Year
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360 Resourcing Solutions
Expiration Date
Until further notice

About the Senior Developer role

Senior Developer Jobs represent the pinnacle of technical expertise and leadership within software engineering teams. Professionals in these roles are seasoned experts who not only write high-quality code but also architect complex systems, guide technical strategy, and mentor less experienced engineers. They are the crucial bridge between high-level business objectives and practical, robust technical implementation, ensuring that software solutions are scalable, secure, and aligned with long-term organizational goals.

Typically, a Senior Developer is responsible for the entire software development lifecycle of significant components or applications. This includes leading the design and architecture of new systems, often leveraging modern paradigms like microservices and event-driven architecture. They write, review, and debug complex code, setting standards for quality and maintainability. A key part of their role involves making pivotal technology stack decisions, selecting frameworks, databases, and tools that best fit project requirements. They collaborate closely with cross-functional teams, including product managers, business analysts, and other stakeholders, to translate business needs into technical specifications. Furthermore, Senior Developers are expected to drive best practices in coding, testing, and deployment, frequently overseeing CI/CD pipelines and advocating for DevOps and security principles (DevSecOps).

The common skill set for these jobs is both deep and broad. Mastery of one or more core programming languages (such as Java, Python, C#, or JavaScript) and their associated ecosystems is fundamental. Expertise in relevant frameworks (e.g., Spring Boot, .NET Core, React, Angular) is essential. Senior Developers possess a strong grasp of system design principles, database management (both SQL and NoSQL), and API design (REST, GraphQL). Experience with cloud platforms (AWS, Azure, GCP), containerization (Docker), and orchestration (Kubernetes) is increasingly standard. Beyond technical prowess, soft skills are critical: leadership, clear communication, effective mentorship, problem-solving, and the ability to manage time and priorities across multiple projects are what distinguish a senior professional.

Typical requirements for Senior Developer jobs often include a bachelor’s degree in computer science or a related field (or equivalent practical experience) and a substantial track record, usually between 5 to 10+ years of progressive software development experience. Demonstrated experience in leading development initiatives, making architectural decisions, and working within Agile/Scrum methodologies is commonly sought. The role demands a proactive, strategic thinker who stays abreast of emerging technologies and can drive innovation while ensuring system reliability and performance. For those seeking to advance their impact beyond pure coding into areas of design, strategy, and team leadership, exploring Senior Developer jobs is the definitive next step in a thriving tech career.