1 to 25 of 39 Permanent Front-End Engineer (Client-Side Engineer) Jobs in the City of London

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 strong sense of aesthetics. We would love to see your recent frontend works! If possible, please … with 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. Work More ❯

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 strong sense of aesthetics. We would love to see your recent frontend works! If possible, please … with 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. Work More ❯

understand the underlying concepts and user flows; however, you are not required or expected to have background in Machine Learning. We are looking to hire a software engineer with with a strong sense of aesthetics. We would love to see your recent frontend works! If possible, please include the link(s) to your portfolio in your … with 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. Work More ❯

understand the underlying concepts and user flows; however, you are not required or expected to have background in Machine Learning. We are looking to hire a software engineer with with a strong sense of aesthetics. We would love to see your recent frontend works! If possible, please include the link(s) to your portfolio in your … with 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. Work More ❯

understand the underlying concepts and user flows; however, you are not required or expected to have background in Machine Learning. We are looking to hire a software engineer with background in UI/UX design, and with a strong sense of aesthetics. We would love to see your recent frontend works! If possible, please include the … with 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. Work More ❯

understand the underlying concepts and user flows; however, you are not required or expected to have background in Machine Learning. We are looking to hire a software engineer with background in UI/UX design, and with a strong sense of aesthetics. We would love to see your recent frontend works! If possible, please include the … with 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. Work More ❯

A brilliant opportunity for a Front-End Software Developer to join an incredibly exciting start-up in London, which is currently in stealth mode developing exciting technology in the security space. Joining a company founded by experts in their field, who have already realised success with other start-ups, this offers the chance to work in … + equity in the business (£45k for Graduate Level, £55k - £60k for 2 years etc) Requirements for Software Developer Ideally, you will have least 1 year of front-end development experience but an exceptional graduate considered (i.e. 1st class degree from a top uni with A*A*A at A Level) Ideally, you will have experience … technologies which would be beneficial: JavaScript, Vue, Node, Yarn, Kotlin, Swift Strong problem-solving ability Natural ability to quickly pick up and learn new technologies Responsibilities for Front-End Software Developer Design and refine user interfaces that are responsive, inclusive, efficient, and scalable. Enhance frontend systems, development tools, and workflows on an ongoing basis. Work closely More ❯

A brilliant opportunity for a Front-End Software Developer to join an incredibly exciting start-up in London, which is currently in stealth mode developing exciting technology in the security space. Joining a company founded by experts in their field, who have already realised success with other start-ups, this offers the chance to work in … + equity in the business (£45k for Graduate Level, £55k - £60k for 2 years etc) Requirements for Software Developer Ideally, you will have least 1 year of front-end development experience but an exceptional graduate considered (i.e. 1st class degree from a top uni with A*A*A at A Level) Ideally, you will have experience … technologies which would be beneficial: JavaScript, Vue, Node, Yarn, Kotlin, Swift Strong problem-solving ability Natural ability to quickly pick up and learn new technologies Responsibilities for Front-End Software Developer Design and refine user interfaces that are responsive, inclusive, efficient, and scalable. Enhance frontend systems, development tools, and workflows on an ongoing basis. Work closely More ❯

Elite electronic quantitative finance fintech business seek a Front End React/TypeScript software expert to join their growing team. Our client is a top end and leading global trading/investment More ❯

Elite electronic quantitative finance fintech business seek a Front End React/TypeScript software expert to join their growing team. Our client is a top end and leading global trading/investment More ❯

in creating scalable and performant backend services, with a thorough understanding of asynchronous programming patterns, event-loop mechanics, and Node.js internals. Demonstrable hands-on experience using modern front-end build tools and bundlers (Webpack, Rollup, Vite). Comprehensive experience with modern testing tools and frameworks, such as Jest, Vitest, React Testing Library, Playwright, or Cypress, including More ❯

in creating scalable and performant backend services, with a thorough understanding of asynchronous programming patterns, event-loop mechanics, and Node.js internals. Demonstrable hands-on experience using modern front-end build tools and bundlers (Webpack, Rollup, Vite). Comprehensive experience with modern testing tools and frameworks, such as Jest, Vitest, React Testing Library, Playwright, or Cypress, including More ❯

Help Us Redefine the Future of Healthcare Frontend Software Engineer (React JS) '? Remote (UK-based) | '? Up to £80,000 Are you ready to use your frontend skills to make a real-world impact? Join a mission-driven team that's transforming clinical research through cutting-edge technology. At the intersection of innovation and healthcare, your work More ❯

Senior Front-End Engineer – DeFi/Web3 Startup Location: Hybrid (2–3 days/week in London) Salary: Up to £150,000 + Equity Type: Full-Time, Permanent Join one of the most exciting early-stage Web3 startups on the market. As the first Senior Front-End Engineer More ❯

Senior Front-End Engineer – DeFi/Web3 Startup Location: Hybrid (2–3 days/week in London) Salary: Up to £150,000 + Equity Type: Full-Time, Permanent Join one of the most exciting early-stage Web3 startups on the market. As the first Senior Front-End Engineer More ❯

Front-End Engineer – AI Infrastructure Global Web3 startup London - Hybrid working £140k - £150k + equity DATAHEAD has been exclusively retained by a global deep-tech startup pioneering the future of developer tooling through AI infrastructure. This early-stage company is creating a new layer of abstraction for developers to easily build intelligent … experience across FAANG, DeFi, and Ivy League institutions, they’re entering their next phase of growth and scaling their engineering team. The Opportunity: As their first dedicated Front-End Engineer , you’ll lead the development of high-performance, user-centric interfaces for their AI-driven products. Working directly with the founding team … you’ll help define and implement end-to-end UI/UX strategy and set architectural standards for scalable front-end systems. What You’ll Do: Drive front-end development and architecture for new AI products. Define UI/UX strategy and implement best practices with a bias More ❯

Front-End Engineer – AI Infrastructure Global Web3 startup London - Hybrid working £140k - £150k + equity DATAHEAD has been exclusively retained by a global deep-tech startup pioneering the future of developer tooling through AI infrastructure. This early-stage company is creating a new layer of abstraction for developers to easily build intelligent … experience across FAANG, DeFi, and Ivy League institutions, they’re entering their next phase of growth and scaling their engineering team. The Opportunity: As their first dedicated Front-End Engineer , you’ll lead the development of high-performance, user-centric interfaces for their AI-driven products. Working directly with the founding team … you’ll help define and implement end-to-end UI/UX strategy and set architectural standards for scalable front-end systems. What You’ll Do: Drive front-end development and architecture for new AI products. Define UI/UX strategy and implement best practices with a bias More ❯

Scalers HQ are working in partnership with a growing FinTech partner in the UK and we are are looking for a Senior Frontend React Engineer to join them on a contractual basis. The role: You’ll be working closely with product managers, designers and engineers across teams to create a world-class user experience for our … and user experience (UI/UX). Responsibilities Work on critical frontend applications used by a global network of sellers Develop greenfield products and enhance our existing front-end architecture Collaborate closely and pair with product designers Provide engineering advice for team issues, and be involved in wider technical decisions that positively impact the department and … the seller & customer experience in gradual, frequent iterations Experience required Have strong technical skills with: React, TypeScript, CSS, React Testing Library/Vitest, Playwright. Implemented performant, responsive front-end applications in agile Product teams. Have substantial experience working closely with product designers during discovery and implementation phases of projects. Have a strong understanding of the development More ❯

Scalers HQ are working in partnership with a growing FinTech partner in the UK and we are are looking for a Senior Frontend React Engineer to join them on a contractual basis. The role: You’ll be working closely with product managers, designers and engineers across teams to create a world-class user experience for our … and user experience (UI/UX). Responsibilities Work on critical frontend applications used by a global network of sellers Develop greenfield products and enhance our existing front-end architecture Collaborate closely and pair with product designers Provide engineering advice for team issues, and be involved in wider technical decisions that positively impact the department and … the seller & customer experience in gradual, frequent iterations Experience required Have strong technical skills with: React, TypeScript, CSS, React Testing Library/Vitest, Playwright. Implemented performant, responsive front-end applications in agile Product teams. Have substantial experience working closely with product designers during discovery and implementation phases of projects. Have a strong understanding of the development More ❯

Role : Senior Full Stack Engineer (FE or BE focussed) Salary range : 90-170k (+equity) Location : x3 days pw onsite in Central London (Mon/Wed/Fri) Tech stack includes : React, Typescript, Tailwind, Python & Postgres. Current team size: x6 engineers Senior Full Stack Engineer required on a Permanent basis for an More ❯

Role : Senior Full Stack Engineer (FE or BE focussed) Salary range : 90-170k (+equity) Location : x3 days pw onsite in Central London (Mon/Wed/Fri) Tech stack includes : React, Typescript, Tailwind, Python & Postgres. Current team size: x6 engineers Senior Full Stack Engineer required on a Permanent basis for an More ❯

Calling new graduates! Or people with 1-2 year’s experience (maximum). Fast growing company revolutionising the Hedge Fund industry are seeking a Front End Developer/Software Engineer. This is a great place to More ❯

Calling new graduates! Or people with 1-2 year’s experience (maximum). Fast growing company revolutionising the Hedge Fund industry are seeking a Front End Developer/Software Engineer. This is a great place to More ❯

Frontend-Leaning Full-Stack Engineer – AI x LegalTech | £150,000 + Equity | 5 Days/Week in Central London One of Europe’s fastest-growing AI startups is building next-gen tools that are redefining how legal professionals work with complex information. They’re hiring a frontend-leaning full-stack engineer to More ❯

Frontend-Leaning Full-Stack Engineer – AI x LegalTech | £150,000 + Equity | 5 Days/Week in Central London One of Europe’s fastest-growing AI startups is building next-gen tools that are redefining how legal professionals work with complex information. They’re hiring a frontend-leaning full-stack engineer to More ❯