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Senior Software Engineer, Front-End or Full Stack United Kingdom, London Jobs (Hybrid work)

18 Job Offers

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Senior Full Stack Engineer
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Join PolyAI as a Senior Full Stack Engineer in London. Develop cutting-edge AI voice assistants using Python, React, and Next.js in a high-ownership role. Enjoy a flexible remote policy, extended holidays, and share options while mentoring a collaborative team.
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United Kingdom , London
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PolyAI
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Senior UI Server Full Stack Engineer - Fixed Income Tech
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Join Citi's Fixed Income Tech team in London as a Senior Full Stack Engineer. Design and develop robust, scalable applications using Java 8+, Spring Boot, and message-driven systems. Enjoy a hybrid model, performance bonus, private medical care, and 27 days annual leave.
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United Kingdom , London
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Citi
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Associate Full-Stack Engineer (Front-End Leaning)
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Join Encord in London as an Associate Full-Stack Engineer, with a front-end focus. You will have end-to-end ownership of projects, working across the stack to build reliable, performant software. We offer a competitive package with equity, in a role perfect for a proactive problem-solver ready to...
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United Kingdom , London
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Encord
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Full-Stack Engineer
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Join Encord, a fast-growing AI infrastructure startup in London, as a Full-Stack Engineer. Take end-to-end ownership of projects, working across the entire stack with Python and TypeScript. Enjoy a competitive package, equity, and the chance to solve complex problems at the cutting edge of comput...
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United Kingdom , London
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Encord
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Senior Full-Stack Engineer
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Join a London-based team at the forefront of AI infrastructure. As a Senior Full-Stack Engineer, you will build a complex platform for ML training data, handling multi-modal data (image, video, 3D) with high performance. Take end-to-end ownership using Python, TypeScript, and React in a cutting-e...
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United Kingdom , London
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Encord
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Senior Full-Stack Engineer
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Join a pioneering team in London building the future of AI infrastructure. As a Senior Full-Stack Engineer, you'll tackle immense scale in computer vision, owning projects end-to-end. We seek an experienced engineer who builds reliable, performant systems from scratch. Enjoy a competitive package...
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United Kingdom , London
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Encord
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Senior Full Stack Engineer
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Join a leading consultancy as a Senior Full Stack Engineer in London. You will design and build impactful features using Java, Spring Boot, TypeScript, and React.js. Leverage your Azure and DevSecOps expertise to enhance architecture and performance for real-time pensions and trading systems. Thi...
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United Kingdom , London
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Formula Recruitment
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Senior Full Stack Engineer
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Join Team Web as a Senior Full Stack Engineer in London. Shape the future of Intercom's core website using React, Next.js, and AWS. Build robust, full-stack solutions while collaborating with marketing and design teams. Enjoy competitive salary, equity, comprehensive benefits, and a stocked kitchen.
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United Kingdom , London
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Intercom
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Senior Web Developer - Full Stack
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Join a leading entertainment group in London as a Senior Full Stack Web Developer. You will build web applications using Ruby, React, HTML, JSS, and JavaScript within an Agile environment. This is a key role for an experienced developer seeking a new challenge with a competitive benefits package.
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United Kingdom , London
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60000.00 GBP / Year
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Blu Digital
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Web Developer - Full-Stack
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Join a leading entertainment group in London as a Full-Stack Web Developer. You will build web applications using Ruby, React, HTML, JSS, and JavaScript. The role requires experience with Agile methodologies and offers a comprehensive benefits package.
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United Kingdom , London
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50000.00 GBP / Year
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Blu Digital
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Senior Full Stack Engineer
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Join our London team as a Senior Full Stack Engineer. You will own the full engineering lifecycle, designing scalable features for our payments platform. We seek a proactive leader with 5+ years' experience in backend development and cloud platforms. Enjoy a flexible, collaborative culture where ...
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United Kingdom , London
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Sokin
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Senior Full Stack Engineer
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Join an innovative nature-tech leader in London as a Senior Full Stack Engineer. You'll build scalable, cloud-based microservices with Golang/Python and craft user interfaces using React/TypeScript. This hybrid role offers the chance to own impactful features from concept to deployment, transform...
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United Kingdom , London
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100000.00 GBP / Year
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Formula Recruitment
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Senior Software Engineer - Java Full Stack, Futures Engineering
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Lead the development of a Cleared Derivatives back-office system in London. This senior Java Full Stack role requires 7+ years of back-end expertise, financial industry experience, and skills in microservices, Kafka, and Kubernetes. Contribute to ReactJS front-end and enjoy competitive compensati...
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United Kingdom , London
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Clear Street
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Software Engineer - Java Full Stack, Futures Engineering
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Join our Futures Engineering team in London as a Java Full Stack Software Engineer. You will build scalable microservices and event-driven systems with Java, Kafka, and Kubernetes, while contributing to ReactJS front-ends. This role requires 3+ years of Java experience within a financial institut...
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United Kingdom , London
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Clear Street
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Full Stack Developer
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Join VIDA in London as a core Full Stack Developer. Build a groundbreaking MSK platform, shipping impactful features across frontend and backend systems. We seek a product-minded engineer with 3+ years' experience in strongly typed backends and JS frameworks. Enjoy share options, learning leave, ...
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United Kingdom , London
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55000.00 - 70000.00 GBP / Year
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Vitrue Health
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Senior Full Stack Engineer
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Join a fast-growing tech company in London as a Senior Full Stack Engineer. You will design scalable applications using Vue.js, PHP, and MySQL, while mentoring a talented team. Enjoy a flexible culture and work on products impacting millions of users daily.
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United Kingdom , London
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Arrive
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Full Stack Developer
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Join Barclays in London as a Full Stack Developer to shape the future of FinTech. You will design high-quality software using Java 17+, Spring Boot, and Kafka in a microservices architecture. We offer private medical care, pension contributions, and a culture focused on innovation and technical e...
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United Kingdom , London
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Barclays
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Senior Full-Stack Engineer - Physical AI
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Join Encord in London as a Senior Full-Stack Engineer for Physical AI. Build the AI data infrastructure of the future, tackling large-scale data, 3D rendering, and ML models for top robotics firms. Enjoy high autonomy, end-to-end ownership, and a competitive package with equity in a fast-growing,...
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United Kingdom , London
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Not provided
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Encord
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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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