1 to 25 of 34 Permanent Front-End Engineer (Client-Side Engineer) Jobs in the South East

FRONT END ENGINEER (AI/… ML START UP COMPANY) UP TO 75k LONDON - HYBRID (2 DAYS A WEEK) React, Javascript, Typescript, GraphQL, TDD, CSS, HTML A start-up company is hiring a Front-End Engineer to join their growing team to work on R&D projects in Machine Learning and Data Visualisation. They are looking for a … front-end engineer that is seeking career progression to more senior roles at a faster pace than most. THE ROLE: As a Front-End Engineer, you will have an expansive range of responsibilities, including: Design, development and upkeep of required software using React. Design More ❯

Role: Front-End Engineer within Quant/Research Location: London (Hybrid) Comp: Up to £175,000 + exceptional guaranteed bonus + full package Company: Award-winning Quant Fund, founded by Computer Scientists Why this stands out: Tech Lead is not only an absolute/distinguished beast but one of the nicest people...probably … flat structured, elite team = real & visible impact Beautiful offices with all the expected perks like food, gyms, etc What you will be working on: Building next-gen front-end systems powering real-time trading Crafting interactive dashboards and research tools with live insights and streaming data Working with the quants to turn complex models into intuitive … powered interfaces for instant updates Applying modern React patterns, component architecture, and performance optimisations to mission-critical apps Shaping the future of trading interfaces, using the latest front-end tech to solve unique quant challenges Innovating! Ideal background: Minimum 1 year+ experience with React/TypeScript/Next.js etc Ideally someone Python Solid CompSci fundamentals (degree More ❯

We're working with a fast-scaling digital banking platform that's reimagining how technology powers financial experiences. They're now looking for a Lead Frontend Developer to take ownership of their core web architecture, design systems, and digital experiences More ❯

Job Role: Senior Software Engineer, Frontend Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with a modern Next.js TypeScript More ❯

Job Role: Senior Software Engineer, Frontend Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with a modern Next.js TypeScript More ❯

Job Role: Senior Software Engineer, Frontend Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with a modern Next.js TypeScript 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. Portfolio We would love to see your recent frontend works! If possible … 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. Portfolio We would love to see your recent frontend works! If possible … 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. Portfolio We would love to see your recent frontend works! If possible … 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 ❯

About the Job Senior Frontend Engineer – London (Victoria) | Hybrid £80k - £110k Are you ready to craft the next generation of data-driven digital experiences for one of Europe’s most technically advanced SaaS innovators? Our client, a pioneer in B2B SaaS solutions , is building “Your Shipping Analytics Supercomputer” , providing cutting-edge data visualisation and … technical role that blends creativity, collaboration, and engineering excellence, ideal for someone who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a … a £100m AI start-up exit , they’re focusing all their attention on this next big venture. This is an outstanding opportunity to design and deliver the front-end of a platform that’s redefining how businesses interact with data. If you’re a passionate engineer who loves solving complex problems through More ❯

About the Job Senior Frontend Engineer – London (Victoria) | Hybrid £80k - £110k Are you ready to craft the next generation of data-driven digital experiences for one of Europe’s most technically advanced SaaS innovators? Our client, a pioneer in B2B SaaS solutions , is building “Your Shipping Analytics Supercomputer” , providing cutting-edge data visualisation and … technical role that blends creativity, collaboration, and engineering excellence, ideal for someone who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a … a £100m AI start-up exit , they’re focusing all their attention on this next big venture. This is an outstanding opportunity to design and deliver the front-end of a platform that’s redefining how businesses interact with data. If you’re a passionate engineer who loves solving complex problems through More ❯

About the Job Senior Frontend Engineer – London (Victoria) | Hybrid £80k - £110k Are you ready to craft the next generation of data-driven digital experiences for one of Europe’s most technically advanced SaaS innovators? Our client, a pioneer in B2B SaaS solutions , is building “Your Shipping Analytics Supercomputer” , providing cutting-edge data visualisation and … technical role that blends creativity, collaboration, and engineering excellence, ideal for someone who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a … a £100m AI start-up exit , they’re focusing all their attention on this next big venture. This is an outstanding opportunity to design and deliver the front-end of a platform that’s redefining how businesses interact with data. If you’re a passionate engineer who loves solving complex problems through More ❯

vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store shopping experience. Role: We’re looking for an experienced Frontend Engineer to work closely with product, design, mobile, and machine learning team members to design & build experiences that re-define retail shopping. You'll help help build engaging & intuitive More ❯

vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store shopping experience. Role: We’re looking for an experienced Frontend Engineer to work closely with product, design, mobile, and machine learning team members to design & build experiences that re-define retail shopping. You'll help help build engaging & intuitive More ❯

vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store shopping experience. Role: We’re looking for an experienced Frontend Engineer to work closely with product, design, mobile, and machine learning team members to design & build experiences that re-define retail shopping. You'll help help build engaging & intuitive More ❯

Senior Frontend Engineer – Next.js/React Location: Monument WeWork in London Type: Full-Time About Admanage.ai We’re building the Cursor for ad management. Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every More ❯

Senior Frontend Engineer – Next.js/React Location: Monument WeWork in London Type: Full-Time About Admanage.ai We’re building the Cursor for ad management. Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every More ❯

Senior Frontend Engineer – Next.js/React Location: Monument WeWork in London Type: Full-Time About Admanage.ai We’re building the Cursor for ad management. Admanage.ai helps companies launch ads 10x faster on Meta & TikTok. Created by top performance marketers who’ve managed over $50M+ in ad spend. Our mission? Level the playing field by giving every More ❯

on a mission to make AI safe and reliable for everyone. To help us achieve this, we're seeking a Front End Software Engineer to join our team! We're particularly looking for someone with strong front end engineering and Typescript experience and with some experience of backend … office in London (Hammersmith). We're excited to have you contribute to our mission! Responsibilities: As a Safe Intelligence Front End Software Engineer, you will: Make key contributions to software development on our TypeScript-based frontend systems, primarily utilizing React to craft intuitive and highly functional user interfaces. Develop simple and More ❯

on a mission to make AI safe and reliable for everyone. To help us achieve this, we're seeking a Front End Software Engineer to join our team! We're particularly looking for someone with strong front end engineering and Typescript experience and with some experience of backend … office in London (Hammersmith). We're excited to have you contribute to our mission! Responsibilities: As a Safe Intelligence Front End Software Engineer, you will: Make key contributions to software development on our TypeScript-based frontend systems, primarily utilizing React to craft intuitive and highly functional user interfaces. Develop simple and More ❯

on a mission to make AI safe and reliable for everyone. To help us achieve this, we're seeking a Front End Software Engineer to join our team! We're particularly looking for someone with strong front end engineering and Typescript experience and with some experience of backend … office in London (Hammersmith). We're excited to have you contribute to our mission! Responsibilities: As a Safe Intelligence Front End Software Engineer, you will: Make key contributions to software development on our TypeScript-based frontend systems, primarily utilizing React to craft intuitive and highly functional user interfaces. Develop simple and More ❯

fixed income 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 systems by facilitating the adoption of … gather requirements, provide technical 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 success. Comprehensive More ❯

Senior Frontend Engineer | React & TypeScript | Salary £70-80k | Hybrid (Surrey once a fortnight) Would you like to build products that directly impact the daily lives of people across the entire UK I’m working with a long-established Tech4Good organisation (20 years strong) who provide essential digital services to councils nationwide. They’re expanding their … product range and are now looking for a Senior Frontend Engineer to take ownership of frontend development across two new products. You’ll be the React SME within the business - leading on frontend development best practices, mentoring other engineers, and helping to shape the company’s frontend strategy as they grow. You’ll work closely with … design system and lead the development of a new component library that will underpin the next generation of their products.This is a fantastic opportunity for a Senior Engineer who wants to take ownership, influence technical direction, and see the results of their work benefit millions across the UK. What you’ll need Excellent commercial experience with More ❯

UCL, Innovate UK, Microsoft, and Google, we're becoming the go-to AI education platform for all major exams worldwide. The Role We're seeking a talented Front-End Developer who will help us craft beautiful, engaging user experiences that rival the best consumer apps, while helping us pioneer the future of AI-powered education interfaces. More ❯

UCL, Innovate UK, Microsoft, and Google, we're becoming the go-to AI education platform for all major exams worldwide. The Role We're seeking a talented Front-End Developer who will help us craft beautiful, engaging user experiences that rival the best consumer apps, while helping us pioneer the future of AI-powered education interfaces. More ❯