Permanent 'Senior Front-End Engineer (Client-Side Engineer)' Job Vacancies

76 to 91 of 91 Permanent Senior Front-End Engineer (Client-Side Engineer) Jobs

Senior Front End Engineer

Ringway, Altrincham, Cheshire, England, United Kingdom
The Hut Group
brands, utilise the latest technologies, innovate and make empowered choices that help shape the future of the THG commerce. About the Role We are seeking a highly skilled Senior Frontend Software Engineer to join our squads exclusively focused on building performant, secure, and accessible headless ecommerce frontends. You’ll work predominantly in … for a frontend specialist with strong technical depth, a keen eye for detail, and a passion for driving user-facing innovation within a complex ecommerce landscape. As a Senior Frontend Engineer you will: Help shape & define the technical architecture of the application, including the system's components, data structures, communication protocols, and More ❯
Employment Type: Full-Time
Salary: Competitive salary
Posted:

Senior Software Engineer – Frontend

London Area, United Kingdom
Zettafleet
the Machine Learning team to understand the underlying concepts and user flows; however, you are not required or expected to have background in Machine Learning. This is a senior-level role, and we are looking to hire a software engineer with background in product design, UI/UX design, and with a … a startup work environment and wider ecosystem. Why join us? Work in an environment conducting cutting-edge research in AI. An official role title of “Founding Engineer” – make an impact on day one. Competitive salary, equity and benefits package. 28 days + public holidays allowance. Opportunities for professional growth and progression with your career. More ❯
Posted:

Senior Software Engineer – Frontend

City of London, London, United Kingdom
Zettafleet
the Machine Learning team to understand the underlying concepts and user flows; however, you are not required or expected to have background in Machine Learning. This is a senior-level role, and we are looking to hire a software engineer with background in product design, UI/UX design, and with a … a startup work environment and wider ecosystem. Why join us? Work in an environment conducting cutting-edge research in AI. An official role title of “Founding Engineer” – make an impact on day one. Competitive salary, equity and benefits package. 28 days + public holidays allowance. Opportunities for professional growth and progression with your career. More ❯
Posted:

Senior Software Engineer – Frontend

london, south east england, united kingdom
Zettafleet
the Machine Learning team to understand the underlying concepts and user flows; however, you are not required or expected to have background in Machine Learning. This is a senior-level role, and we are looking to hire a software engineer with background in product design, UI/UX design, and with a … a startup work environment and wider ecosystem. Why join us? Work in an environment conducting cutting-edge research in AI. An official role title of “Founding Engineer” – make an impact on day one. Competitive salary, equity and benefits package. 28 days + public holidays allowance. Opportunities for professional growth and progression with your career. More ❯
Posted:

Senior Software Engineer – Frontend

london (city of london), south east england, united kingdom
Zettafleet
the Machine Learning team to understand the underlying concepts and user flows; however, you are not required or expected to have background in Machine Learning. This is a senior-level role, and we are looking to hire a software engineer with background in product design, UI/UX design, and with a … a startup work environment and wider ecosystem. Why join us? Work in an environment conducting cutting-edge research in AI. An official role title of “Founding Engineer” – make an impact on day one. Competitive salary, equity and benefits package. 28 days + public holidays allowance. Opportunities for professional growth and progression with your career. More ❯
Posted:

Senior Software Engineer – Frontend

slough, south east england, united kingdom
Zettafleet
the Machine Learning team to understand the underlying concepts and user flows; however, you are not required or expected to have background in Machine Learning. This is a senior-level role, and we are looking to hire a software engineer with background in product design, UI/UX design, and with a … a startup work environment and wider ecosystem. Why join us? Work in an environment conducting cutting-edge research in AI. An official role title of “Founding Engineer” – make an impact on day one. Competitive salary, equity and benefits package. 28 days + public holidays allowance. Opportunities for professional growth and progression with your career. More ❯
Posted:

Senior Frontend Typescript/React Engineer - Trading AVP

London, South East, England, United Kingdom
Robert Walters
system evolution, and ensure strategic tech integration. Enjoy flexible work, ongoing training, and a supportive, inclusive environment. Key Responsibilities: Design and develop modern, high-performance front-end applications using React and TypeScript, ensuring they meet the demanding needs of real-time trading environments. Plan and deliver solutions that align with business goals … and support intricate trading workflows Build resilient and maintainable user interfaces by implementing comprehensive testing strategies and code reviews Ensure that all front-end components are well-architected, scalable, and integrate seamlessly Collaborate effectively with cross-functional teams-including traders, backend engineers, and product managers Contribute actively to the decommissioning of legacy … guidance, and ensure that delivered solutions address real-world challenges faced by end users. Key Requirements: Demonstrated expertise in developing sophisticated front-end applications using React.js, JavaScript/TypeScript Proven experience building real-time trading or financial applications where high performance and low latency are essential for business More ❯
Employment Type: Full-Time
Salary: £70,000 - £85,000 per annum
Posted:

Senior Frontend Engineer (Product) - AI SaaS - London (Hybrid)

London, UK
Hybrid / WFH Options
Stax - Deeptech Talent
D3/visx Storybook Tailwind CSS Jest Cypress Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record in front-end architecture (modular codebases, micro-frontends, design systems, scalability). Strong portfolio of data-heavy, real-time UIs and reusable component libraries. Expertise in TypeScript, CSS … and modern testing frameworks. Passion for developer experience, tooling, and mentoring. Degree in Computer Science or equivalent experience. Bonus points for: Open source contributions to front-end tooling, design systems, or data-visualisation libraries. Experience with WebSockets, PWAs, offline support, or design-token pipelines. How They Work Speed with craftsmanship: Continuous delivery … This is a chance to join a hyper-growth company at the forefront of AI-powered collaboration, tackling some of the most exciting challenges in front-end engineering today. Interested? Reach out to Stax for a confidential discussion. Please be advised that, owing to the expected volume of applications, we may only More ❯
Employment Type: Part-time
Posted:

Senior Frontend Engineer (Product) - AI SaaS - London (Hybrid)

City of London, Greater London, UK
Hybrid / WFH Options
Stax - Deeptech Talent
D3/visx Storybook Tailwind CSS Jest Cypress Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record in front-end architecture (modular codebases, micro-frontends, design systems, scalability). Strong portfolio of data-heavy, real-time UIs and reusable component libraries. Expertise in TypeScript, CSS … and modern testing frameworks. Passion for developer experience, tooling, and mentoring. Degree in Computer Science or equivalent experience. Bonus points for: Open source contributions to front-end tooling, design systems, or data-visualisation libraries. Experience with WebSockets, PWAs, offline support, or design-token pipelines. How They Work Speed with craftsmanship: Continuous delivery … This is a chance to join a hyper-growth company at the forefront of AI-powered collaboration, tackling some of the most exciting challenges in front-end engineering today. Interested? Reach out to Stax for a confidential discussion. Please be advised that, owing to the expected volume of applications, we may only More ❯
Employment Type: Part-time
Posted:

Senior Frontend Engineer (Product) - AI SaaS - London (Hybrid)

london, south east england, united kingdom
Hybrid / WFH Options
Stax - Deeptech Talent
D3/visx · Storybook · Tailwind CSS · Jest · Cypress · Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record in front-end architecture (modular codebases, micro-frontends, design systems, scalability). Strong portfolio of data-heavy, real-time UIs and reusable component libraries. Expertise in TypeScript, CSS … and modern testing frameworks. Passion for developer experience, tooling, and mentoring. Degree in Computer Science or equivalent experience. Bonus points for: Open source contributions to front-end tooling, design systems, or data-visualisation libraries. Experience with WebSockets, PWAs, offline support, or design-token pipelines. How They Work Speed with craftsmanship: Continuous delivery … This is a chance to join a hyper-growth company at the forefront of AI-powered collaboration, tackling some of the most exciting challenges in front-end engineering today. Interested? Reach out to Stax for a confidential discussion. Please be advised that, owing to the expected volume of applications, we may only More ❯
Posted:

Senior Frontend Engineer (Product) - AI SaaS - London (Hybrid)

slough, south east england, united kingdom
Hybrid / WFH Options
Stax - Deeptech Talent
D3/visx · Storybook · Tailwind CSS · Jest · Cypress · Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record in front-end architecture (modular codebases, micro-frontends, design systems, scalability). Strong portfolio of data-heavy, real-time UIs and reusable component libraries. Expertise in TypeScript, CSS … and modern testing frameworks. Passion for developer experience, tooling, and mentoring. Degree in Computer Science or equivalent experience. Bonus points for: Open source contributions to front-end tooling, design systems, or data-visualisation libraries. Experience with WebSockets, PWAs, offline support, or design-token pipelines. How They Work Speed with craftsmanship: Continuous delivery … This is a chance to join a hyper-growth company at the forefront of AI-powered collaboration, tackling some of the most exciting challenges in front-end engineering today. Interested? Reach out to Stax for a confidential discussion. Please be advised that, owing to the expected volume of applications, we may only More ❯
Posted:

Senior Frontend Engineer (Product) - AI SaaS - London (Hybrid)

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Stax - Deeptech Talent
D3/visx · Storybook · Tailwind CSS · Jest · Cypress · Playwright What You Bring 8+ years building and evolving large-scale web applications. Proven track record in front-end architecture (modular codebases, micro-frontends, design systems, scalability). Strong portfolio of data-heavy, real-time UIs and reusable component libraries. Expertise in TypeScript, CSS … and modern testing frameworks. Passion for developer experience, tooling, and mentoring. Degree in Computer Science or equivalent experience. Bonus points for: Open source contributions to front-end tooling, design systems, or data-visualisation libraries. Experience with WebSockets, PWAs, offline support, or design-token pipelines. How They Work Speed with craftsmanship: Continuous delivery … This is a chance to join a hyper-growth company at the forefront of AI-powered collaboration, tackling some of the most exciting challenges in front-end engineering today. Interested? Reach out to Stax for a confidential discussion. Please be advised that, owing to the expected volume of applications, we may only More ❯
Posted:

Senior Software Engineer (Front End) - Hybrid

Manchester, Lancashire, United Kingdom
Hybrid / WFH Options
platform (Azure/AWS your call) Driving a culture shift across engineering CI/CD, SRE, DevEx, clean code Setting engineering standards: quality gates, testing practices, observability, automation Senior engineering leader (Head of/Director level) with strong architectural credentials Cloud-agnostic setup (AWS, Azure, or GCP your influence matters) TypeScript across services and frontend (frameworks are flexible More ❯
Posted:

Senior Frontend Engineer 3D Visualization (React, WebGL, Python)

Guernsey, UK
US Tech Solutions
Duration: 3 Months Possible extension Location : UK- Remote Key Responsibilities: Develop a high-performance 3D brain visualization tool in the browser using WebGL and Three.js . Build and maintain React components to enable user interaction with different types of media More ❯
Employment Type: Part-time
Posted:

Senior Frontend Engineer - 3D Visualization (React, WebGL, Python)

United Kingdom, UK
US Tech Solutions
Duration: 3 Months – Possible extension Location : UK- Remote Key Responsibilities: Develop a high-performance 3D brain visualization tool in the browser using WebGL and Three.js . Build and maintain React components to enable user interaction with different types of media More ❯
Posted:

Mid/Senior Frontend Engineer (UK)

London, United Kingdom
Mayday Holdings Limited
time accounting. We're founded by two experienced entrepreneurs: David Tuck , an accountant then CFO by training who founded Chaser; and James Scott-Griffin , a software engineer who was CTO at Idio (now Optimizely) and Rungway. We've had a brilliant first four years. We've built an incredible initial team in the UK … if you aren't - we're looking for great people, so your experience is more valuable than the specifics. About You You're an experienced frontend engineer with multiple years of working in startups; You have a strong, pragmatic problem solving mindset; You're comfortable working both collaboratively and on your own as location More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:
Senior Front-End Engineer (Client-Side Engineer)
10th Percentile
£57,500
25th Percentile
£67,500
Median
£77,500
75th Percentile
£83,250
90th Percentile
£83,925