17 of 17 Permanent JavaScript Engineer Jobs in London

Senior Software Engineer/Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets, the company has … years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Software Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You … ll work across the full tech stack using JavaScript and Vue.js on the front end, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore new technologies and use the best tool for the job as well as own your own More ❯

Senior Software Engineer/Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets, the company has … years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Software Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You … ll work across the full tech stack using JavaScript and Vue.js on the front end, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore new technologies and use the best tool for the job as well as own your own More ❯

t just be writing code - you’ll be helping define how education is delivered at a global scale in the age of AI. Role Overview: The Senior Full Stack Engineer will join the founding engineering team to deliver a brand-new platform at the intersection of education and technology. You will work across the stack, influence key technical decisions More ❯

t just be writing code - you’ll be helping define how education is delivered at a global scale in the age of AI. Role Overview: The Senior Full Stack Engineer will join the founding engineering team to deliver a brand-new platform at the intersection of education and technology. You will work across the stack, influence key technical decisions More ❯

Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension Urgently hiring for x2 Full stack engineers, experienced required: 6+ years experience working with JavaScript/TypeScript for fast growth product companies. Frontend: React, Sass, and Storybook Backend: Node, Express, PostgreSQL Infrastructure: AWS ClickHouse … not required. Must have's are: Confidence with performing in Leetcode style interviews (Data Structures and Algorithms) A degree in Computer Science or Software Engineering related Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension * If interested, please apply here and we will reach More ❯

Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension Urgently hiring for x2 Full stack engineers, experienced required: 6+ years experience working with JavaScript/TypeScript for fast growth product companies. Frontend: React, Sass, and Storybook Backend: Node, Express, PostgreSQL Infrastructure: AWS ClickHouse … not required. Must have's are: Confidence with performing in Leetcode style interviews (Data Structures and Algorithms) A degree in Computer Science or Software Engineering related Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension * If interested, please apply here and we will reach More ❯

Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension Urgently hiring for x2 Full stack engineers, experienced required: 6+ years experience working with JavaScript/TypeScript for fast growth product companies. Frontend: React, Sass, and Storybook Backend: Node, Express, PostgreSQL Infrastructure: AWS ClickHouse … not required. Must have's are: Confidence with performing in Leetcode style interviews (Data Structures and Algorithms) A degree in Computer Science or Software Engineering related Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension * If interested, please apply here and we will reach More ❯

Software Engineer/Developer (JavaScript Node.js AWS API) London/WFH to £85k Are you a technologist Software Engineer who enjoys using a range of languages whilst continually learning? You could be progressing your career at a successful and growing Cyber Security Risk Management tech company, working on complex and interesting systems at the cutting edge of … technology used by insurance company to assess security risk. As a Software Engineer you'll join the Product Engineering team working on the development of websites, APIs and efficient database queries. As well as JavaScript and SQL you'll be working with TypeScript, Node.js and serverless AWS with a focus on backend development with exposure to the React …/WFH: You'll join the team in the London Bridge office three days a week with flexibility to work from home the other two. About you: You have JavaScript/TypeScript backend development experience You have a good knowledge of REST APIs You have strong SQL query writing skills You have experience of working on scalable systems with More ❯

Senior JavaScript Engineer/Developer (Vue.js API) London to £100k Do you have expertise with JavaScript? You could be progressing your career in a senior, hands-on Senior JavaScript Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes … been established 10 years, with recent funding of £125 million.You'll be working on complex and interesting systems and can enjoy a range of benefits and perks.As a Senior JavaScript Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the … business. You'll focus on front end components using JavaScript and Vue.js, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore new technologies and use the best tool for the job as well as own your own DevOps and deployment. More ❯

Full Stack JavaScript Engineer - £75K (2-days in London) A well-established, award-winning technology business with over 20 years of experience in retail digital transformation is seeking a Full Stack JavaScript Engineer to join their growing team. The company is recognised for its long-standing work with major retail clients and its proprietary platform, a … supporting an external client’s growth by delivering high-quality, scalable software within a dynamic, collaborative environment. This is an exciting opportunity for a technically strong and values-driven engineer who wants to work with purpose and impact. Tech Stack Frontend : ES6, React, Redux, React Hooks, Cordova Backend : Node.js, Express, TypeScript, Sequelize, PostgreSQL Infrastructure : Heroku, AWS, Twilio CI/… solution-oriented mindset within the team Balance technical quality with commercial delivery timelines Communicate effectively across technical and non-technical audiences About You Proven experience as a full stack JavaScript engineer in a modern development environment Strong understanding of web and mobile technologies A pragmatic problem-solver who enjoys working collaboratively Passionate about building great products and making More ❯

Full Stack JavaScript Engineer - £75K (2-days in London) A well-established, award-winning technology business with over 20 years of experience in retail digital transformation is seeking a Full Stack JavaScript Engineer to join their growing team. The company is recognised for its long-standing work with major retail clients and its proprietary platform, a … supporting an external client’s growth by delivering high-quality, scalable software within a dynamic, collaborative environment. This is an exciting opportunity for a technically strong and values-driven engineer who wants to work with purpose and impact. Tech Stack Frontend : ES6, React, Redux, React Hooks, Cordova Backend : Node.js, Express, TypeScript, Sequelize, PostgreSQL Infrastructure : Heroku, AWS, Twilio CI/… solution-oriented mindset within the team Balance technical quality with commercial delivery timelines Communicate effectively across technical and non-technical audiences About You Proven experience as a full stack JavaScript engineer in a modern development environment Strong understanding of web and mobile technologies A pragmatic problem-solver who enjoys working collaboratively Passionate about building great products and making More ❯

Staff to Principal JavaScript Engineer | £110,000–£150,000 + Equity | TypeScript | React | Node.js | Hybrid (3 Days in Victoria) A high-growth, VC-backed SaaS startup is redefining how modern businesses manage spend—streamlining everything from software requests to supplier approvals. With enterprise customers already onboard and 10x growth on the horizon, they’re looking for exceptional full … pride in clean code, smooth user experiences, and solving real customer problems Have a history of excellence in any domain—tech, academia, sport, or side projects Compensation & Equity Senior Engineer £90,000 - £110,000 Staff Engineer: £110,000 – £135,000 Principal Engineer: £135,000 – £150,000 Equity Options Benefits Hybrid working: 3 days/week in a More ❯

Staff to Principal JavaScript Engineer | £110,000–£150,000 + Equity | TypeScript | React | Node.js | Hybrid (3 Days in Victoria) A high-growth, VC-backed SaaS startup is redefining how modern businesses manage spend—streamlining everything from software requests to supplier approvals. With enterprise customers already onboard and 10x growth on the horizon, they’re looking for exceptional full … pride in clean code, smooth user experiences, and solving real customer problems Have a history of excellence in any domain—tech, academia, sport, or side projects Compensation & Equity Senior Engineer £90,000 - £110,000 Staff Engineer: £110,000 – £135,000 Principal Engineer: £135,000 – £150,000 Equity Options Benefits Hybrid working: 3 days/week in a More ❯

Lead Backend Engineer (Node.js Focus) | TypeScript | AWS | £120,000 + Equity | Hybrid (3 Days in Vauxhall) Step into a hands-on leadership role where your backend skills directly power real-world operations—from inventory management and logistics to store productivity and fulfilment speed. This is a backend-first engineering position (80% Node.js) at a fast-growing, premium delivery and More ❯

Lead Backend Engineer (Node.js Focus) | TypeScript | AWS | £120,000 + Equity | Hybrid (3 Days in Vauxhall) Step into a hands-on leadership role where your backend skills directly power real-world operations—from inventory management and logistics to store productivity and fulfilment speed. This is a backend-first engineering position (80% Node.js) at a fast-growing, premium delivery and More ❯

Javascript and Agile Software Developer ?" Central London The Client Developer will be responsible for the development and delivery of all client side aspects of our product, developing new features and launching new platforms. A successful candidate will have a proven ability in delivering customer facing JavaScript applications, in an Agile software development environment and a passion for building … Mentoring and supporting other developers with their day-to-day work. Monitor system performance and resolve any issues or failures in staging or production environments. Must have experience with JavaScript (vanilla JS, prototypes, scoping, design patterns, memory profiling). Track record of successful software delivery through all phases of development, including coding standards, code reviews, source control management, build … processes, testing, and operations. Working knowledge of object-oriented design, design patterns and extreme programming. Familiar with build automation and continuous integration 3Ability to write unit tests using JavaScript in a common library such as Jasmine. Any experience of the following sills would be pretty handy: Node.js or other programming languages Cross-platform development preferable on smart TV and More ❯

you need to have A solid background in support - ability to troubleshoot, find workarounds, and support high-end, high-value clients Good exposure to UI development with scripting skills - JavaScript Tech tools & skills such as CSS, Angular, Ajax, or React would be very useful SQL skills are also needed This is a high-priority hire, so interviews will be More ❯