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Senior Software Engineer, Front-End or Full Stack United Kingdom Jobs

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Full Stack Engineer
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Join a fast-growing climate tech startup in London as a Full Stack Engineer. You will own features end-to-end, building with React and Python while leveraging AWS (Lambda, API Gateway, S3). This high-trust role demands an ownership mindset and deep technical strength to turn complex data into imp...
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United Kingdom , London
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50000.00 - 65000.00 GBP / Year
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Oho Group Ltd
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Full Stack Engineer (Kotlin and/or Python) – VP
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Join Citi as a VP Full Stack Engineer in London, leveraging Kotlin and/or Python to build scalable, high-performance systems for global finance. Design microservices on Kubernetes, champion DevOps and CI/CD, and collaborate on front office trading solutions. Benefit from hybrid work, 27 days leav...
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United Kingdom , London
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Citi
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Full Stack Engineer (C#/WPF UI) – VP
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United Kingdom , London
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Citi
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Full Stack Developer
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United Kingdom , London
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Barclays
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Full Stack Software Engineer
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Convergence Group seeks a Full Stack Software Engineer with 5+ years of C# expertise to build scalable web applications using React, Blazor, and Azure. Based in Solihull, UK, this hybrid role offers 33 days holiday, private medical, and enhanced pension. You will design intuitive front-ends, robu...
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United Kingdom , Solihull
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55000.00 - 65000.00 GBP / Year
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360 Resourcing Solutions
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Full Stack Engineer (C#/WPF UI) – VP
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United Kingdom , Belfast
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Citi
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Senior Full Stack Engineer - Decision Intelligence
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United Kingdom , Thursley
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360 Resourcing Solutions
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Full Stack Software Engineer (Robotic Systems)
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United Kingdom
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80000.00 - 90000.00 GBP / Year
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Zenovo
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Full Stack Application Development Technical Lead (Java/Python), Vice President
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Lead full-stack development at Citi as a Vice President in Belfast, driving Java/Python solutions for global financial systems. Leverage Spring Boot, React, and cloud-native architecture to deliver scalable applications. Integrate GenAI/LLM capabilities while mentoring teams in Agile environments...
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United Kingdom , Belfast
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Citi
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Senior Full Stack Engineer
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United Kingdom , London
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85000.00 GBP / Year
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360 Resourcing Solutions
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Full-Stack Senior Software Engineer, GenAI Data Products and Platform (VP)
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Join Citi as a VP Full-Stack Senior Software Engineer to build 'Citi Assist', a GenAI assistant for global employees. You’ll own end-to-end features using Python, TypeScript, and React, working with data pipelines and cloud infrastructure (OpenShift/Kubernetes). Based in London, this role offers ...
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United Kingdom , London
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Citi
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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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Full Stack Engineer / Software Engineer
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Full Stack Engineer sought for a high-impact Fintech role in the City of London. You will architect sophisticated internal tools using React, Next.js, and TypeScript, protecting millions of global transactions. Ideal for a Frontend Specialist with 4+ years in production-grade apps, skilled in mic...
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United Kingdom , City of London
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60.00 - 80.00 GBP / Hour
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Randstad
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Senior Java Engineer - Full Stack, Vice President
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Senior Java Full-Stack Engineer (Vice President) sought in London to design and build large-scale, mission-critical applications. This role demands 6-10 years of experience with Java, Spring Boot, and React/Angular, plus expertise in microservices and AI-powered development tools. You will drive ...
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United Kingdom , London
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Citi
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Full Stack Developer
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Seeking an SC Cleared Full Stack Developer for a remote, 6-month contract inside IR35. You will build full-stack applications using Python and React.js, with strong SQL and Git skills. This role involves designing PoCs and collaborating with cross-functional teams in a secure, regulated UK enviro...
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United Kingdom
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Whitehall Resources Ltd
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Full Stack Software Engineer
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Join a high-growth health-tech scale-up in London as a Full Stack Engineer. Leverage your strong Python and React skills to build and scale their core customer platform. Work in a hybrid model on a product used by 100k+ customers, with an AI-assisted engineering culture. This role includes equity...
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United Kingdom , London
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100000.00 GBP / Year
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Orbis Consultants
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Full Stack Engineer
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Join hyperexponential in London as a Full Stack Engineer. Build a scalable AI-powered platform for the insurance industry using Rust/Kotlin, React/TypeScript, and AWS. Design core platform services like authorization and APIs to enable product teams. Enjoy top benefits including a £5k training bu...
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United Kingdom , London
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hyperexponential
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Senior Full Stack Engineer
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Join a fast-growing team building a global, two-sided marketplace platform. As a Senior Full Stack Engineer, you'll design and scale high-volume systems with a backend focus. Enjoy high autonomy, a remote-first culture, and ownership from idea to iteration. Strong Java, React, and AWS experience ...
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United Kingdom , Oxford
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Orbis Consultants
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Senior Full Stack Software Engineer
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Join Retail Insight as a Senior Full Stack Engineer in Surrey/London. Design and build scalable analytics platforms using .NET Core, React, and modern databases. Enjoy a hybrid model, 25+ days leave, and strong career development in a collaborative team.
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United Kingdom , Surrey, Greater London
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Retail Insight
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Junior Full Stack Developer
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Join our team in Sunderland as a Junior Full Stack Developer. You will develop and modernize our internal platform using Python, AWS, and React in a regulated environment. This role offers ownership from concept to delivery, working on both legacy systems and new features. Enjoy benefits like fre...
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United Kingdom , Sunderland
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30000.00 - 35000.00 GBP / Year
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Green Energy Advice Bureau
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About the Senior Software Engineer, Front-End or Full Stack role

Explore senior-level opportunities in cutting-edge technology with our curated list of Senior Software Engineer, Front-End or Full Stack jobs. These roles represent the pinnacle of web and application development, where seasoned professionals architect, build, and maintain the sophisticated digital products that power modern businesses and user experiences. Senior engineers in these domains are technical leaders, responsible for the entire software development lifecycle, from conceptualization and design to deployment, optimization, and ongoing iteration. They bridge the gap between complex business requirements and elegant technical solutions, ensuring systems are scalable, maintainable, and deliver exceptional user value.

A Senior Front-End Engineer specializes in crafting the client-side layer that users directly interact with. Their core mission is to build intuitive, responsive, and high-performance user interfaces. Typical responsibilities include translating design mockups into functional, accessible code using frameworks like React, Angular, or Vue.js; optimizing applications for maximum speed and scalability; ensuring cross-browser compatibility; and implementing robust state management. They are deeply proficient in JavaScript/TypeScript, HTML, CSS, and modern build tools, with a keen eye for UX/UI principles and front-end performance metrics.

A Senior Full Stack Engineer possesses mastery across both the front-end and back-end spectrum. They design and develop complete applications, handling everything from user-facing components to server-side logic, databases, and APIs. Common duties involve architecting overall system design, developing RESTful or GraphQL APIs, designing data models, writing server-side code in languages like Node.js, Python, or Java, and integrating with various data storage solutions. They ensure the seamless flow of data and functionality between the client and server, making critical decisions on technology stacks and infrastructure considerations.

Typical skills and requirements for these senior roles extend beyond pure coding. Employers seek professionals with 5+ years of experience demonstrating a proven track record of shipping complex products. Expertise in modern frameworks and languages is a given, but equal emphasis is placed on software architecture, system design, and the ability to make long-term technical decisions. Strong collaboration skills are essential, as these engineers frequently work with product managers, designers, and other stakeholders to define requirements and translate them into technical specs. Leadership qualities such as mentoring junior developers, conducting code reviews, advocating for best practices, and driving technical excellence within a team are hallmarks of the position. A proactive problem-solving mindset, the ability to work in ambiguous environments, and a product-focused obsession with quality, performance, and user experience are the defining traits of successful candidates. Discover your next career-defining challenge by browsing our comprehensive selection of Senior Software Engineer, Front-End or Full Stack jobs today.

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