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Senior Developer United Kingdom Jobs

109 Job Offers

Senior C# Developer
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Lead the development of low-latency trading platforms at Barclays in London. Utilize your expertise in .Net 8 and Kubernetes to build high-performance, scalable systems. Collaborate directly with quant teams and traders. Enjoy top benefits including private medical care and a competitive pension.
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United Kingdom , London
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Not provided
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Barclays
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Senior Backend Software Developer - Python/Django
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Join Xelix, a fast-growing AI fintech scale-up, as a Senior Backend Developer. You will build robust, scalable Python/Django solutions and REST APIs in a hybrid London role. We seek 4+ years of Python/Django experience with AWS and CI/CD tools. Enjoy great benefits, a dog-friendly office, and a h...
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United Kingdom , London
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70000.00 - 80000.00 GBP / Year
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Xelix
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Until further notice
Senior Frontend Developer
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Join our team as a Senior Frontend Developer in Warrington, UK. You will build a scalable SaaS applicant tracking system using Angular 18 and .NET 8. We require 4+ years of commercial experience with Angular 17+, TypeScript, and modern CSS. Collaborate with designers and developers to translate U...
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United Kingdom , Warrington
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55000.00 - 65000.00 GBP / Year
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360 Resourcing Solutions
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Senior Developer
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Join our award-winning Technology Team in Chester as a Senior Developer. You will be a key technical contributor and role model, building scalable PHP solutions with Laravel/Symfony and modern front-end tech like React. Enjoy extensive benefits, including a bonus scheme, 33 days' holiday, enhance...
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United Kingdom , Chester
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55000.00 GBP / Year
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360 Resourcing Solutions
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Senior .NET Developer
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Join our team as a Senior .NET Developer in Warrington. Play a vital role in building a cloud-based SaaS ATS platform using .NET 8 and Angular 18. Leverage your expertise in C#, Azure/AWS, and RESTful APIs to deliver high-quality, scalable solutions. You will also mentor junior developers and wor...
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United Kingdom , Warrington
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55000.00 - 65000.00 GBP / Year
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360 Resourcing Solutions
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Senior Front-end Developer
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Lead the front-end development of a high-profile UK public-sector digital service using Next.js, React, and TypeScript. This senior role involves technical ownership, setting architecture standards, and mentoring within a Scrum team. We offer strong benefits including private medical cover and a ...
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United Kingdom
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Not provided
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NEC Software Solutions
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Senior Developer
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Join tmGroup to shape the future of legal tech with award-winning conveyancing solutions. As a Senior Full-Stack Developer, you'll design and build scalable platforms using .NET/C#, TypeScript, and AWS. Enjoy a flexible remote role with competitive benefits, while mentoring a team and working on ...
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United Kingdom , Swindon
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Not provided
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360 Resourcing Solutions
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Senior Software Developer
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Join our team as a Senior Software Developer specializing in AI/ML. You will design and deploy production-ready machine learning systems using Python, PyTorch/TensorFlow, and LLMs. This role involves building end-to-end ML pipelines, RAG applications, and computer vision/NLP solutions. We offer 3...
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United Kingdom
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Not provided
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Activate Group Limited
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Senior Gen AI Developer
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Senior Gen AI Developer role in London. Build innovative AI solutions using LLMs, RAG, and cloud platforms. Join a collaborative, trust-based team with excellent benefits.
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United Kingdom , London
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Not provided
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PA Consulting
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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.