1 to 25 of 31 JavaScript Developer Jobs in London

We are on the lookout for a talented and motivated Full Stack JavaScript Developer to join a dynamic Engineering team. If you're passionate about creating innovative web and mobile applications while ensuring high performance and scalability, this is your opportunity to make an impact! Mid-Level Full … Stack JavaScript Developer Salary: 80,000 (depending on experience) plus benefits, perks and healthcare options Location: Hybrid/Travel to London Job Type: Permanent Security Clearance: SC clearance required We are on the lookout for a talented and motivated Full Stack JavaScript Developer to join a … web and mobile applications while ensuring high performance and scalability, this is your opportunity to make an impact! Your Role: As a Full Stack JavaScript Developer, you will: Provide technical leadership and mentorship to a team of developers, guiding them in best practices and delivering high-quality code. More ❯

We are on the lookout for a talented and motivated Full Stack JavaScript Developer to join a dynamic Engineering team. If you're passionate about creating innovative web and mobile applications while ensuring high performance and scalability, this is your opportunity to make an impact! Mid-Level Full … Stack JavaScript Developer Salary: £80,000 (depending on experience) plus benefits, perks and healthcare options Location: Hybrid/Travel to London Job Type: Permanent Security Clearance: SC clearance required We are on the lookout for a talented and motivated Full Stack JavaScript Developer to join a … web and mobile applications while ensuring high performance and scalability, this is your opportunity to make an impact! Your Role: As a Full Stack JavaScript Developer, you will: Provide technical leadership and mentorship to a team of developers, guiding them in best practices and delivering high-quality code. More ❯

Mid-Level Full Stack JavaScript Developer Salary: £80,000 (depending on experience) plus benefits, perks and healthcare options Location: Hybrid/Travel to London Job Type: Permanent Security Clearance: SC clearance required We are on the lookout for a talented and motivated Full Stack JavaScript Developer … web and mobile applications while ensuring high performance and scalability, this is your opportunity to make an impact! Your Role: As a Full Stack JavaScript Developer, you will: Provide technical leadership and mentorship to a team of developers, guiding them in best practices and delivering high-quality code. … Design, develop, and maintain both front-end and back-end components using JavaScript, Node.js, and modern frameworks such as React, Angular, or Vue.js. Collaborate closely with architects and other developers to design robust and scalable architectures for new and existing projects. Participate in agile development processes, including sprint planning More ❯

JavaScript Developer Location: London (onsite before moving to a hybrid model) Salary: Circa 60K – 66K + Benefits JavaScript Developer required by fast-growing, revolutionary tech company! This is a varied, challenging role where you’ll be responsible for designing and developing scalable backend systems to support More ❯

Javascript Developer UI – React, Typescript - FinTech Remote First | London (UK) | Up to £115k + Benefits Are you a Javascript developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If so, we’d love to More ❯

Javascript Developer UI – React, Typescript - FinTech Remote First | London (UK) | Up to £115k + Benefits Are you a Javascript developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If so, we’d love to More ❯

Senior Full Stack Developer/Engineer (JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on 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 … million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Full Stack Developer 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 More ❯

Job Title: Senior JavaScript Developer Location: Belfast, Northern Ireland About The Business: Join a dynamic and innovative team in Belfast, revolutionizing the pre-existing norms within this expansive domain. As a Senior React Developer you'll be part of a talented team of 25 professionals dedicated to … Remote first/Hybrid opportunities too Progression Opportunities: This client believe in investing in the team members' growth and development. As a Senior React Developer, you'll have access to a clear and defined career path, with opportunities to take on leadership roles, contribute to strategic decisions, and shape … and resources you need to advance your career and achieve your professional goals. How to Apply: If you're a passionate and experienced React Developer with a strong background in AWS, and you're ready to take your career to the next level feel free to reach out to More ❯

Job Title: Senior JavaScript Developer Location: Belfast, Northern Ireland About The Business: Join a dynamic and innovative team in Belfast, revolutionizing the pre-existing norms within this expansive domain. As a Senior React Developer you'll be part of a talented team of 25 professionals dedicated to … Remote first/Hybrid opportunities too Progression Opportunities: This client believe in investing in the team members' growth and development. As a Senior React Developer, you'll have access to a clear and defined career path, with opportunities to take on leadership roles, contribute to strategic decisions, and shape … and resources you need to advance your career and achieve your professional goals. How to Apply: If you're a passionate and experienced React Developer with a strong background in AWS, and you're ready to take your career to the next level feel free to reach out to More ❯

Job Title: Senior JavaScript Developer Location: Belfast, Northern Ireland About The Business: Join a dynamic and innovative team in Belfast, revolutionizing the pre-existing norms within this expansive domain. As a Senior React Developer you'll be part of a talented team of 25 professionals dedicated to … Remote first/Hybrid opportunities too Progression Opportunities: This client believe in investing in the team members' growth and development. As a Senior React Developer, you'll have access to a clear and defined career path, with opportunities to take on leadership roles, contribute to strategic decisions, and shape … and resources you need to advance your career and achieve your professional goals. How to Apply: If you're a passionate and experienced React Developer with a strong background in AWS, and you're ready to take your career to the next level feel free to reach out to More ❯

I am currently supporting a leading eCommerce client with a search for a contract Full Stack JavaScript Developer to support with the delivery of their innovative web applications. They are searching for someone with extensive experience using react, TypeScript and node.js. The team are also searching for someone More ❯

I am currently supporting a leading eCommerce client with a search for a contract Full Stack JavaScript Developer to support with the delivery of their innovative web applications. They are searching for someone with extensive experience using react, TypeScript and node.js. The team are also searching for someone More ❯

Full Stack Developer (JavaScript, Node.JS, React): Our client is a technology driven cloud native service provider. They are seeking an experienced Full Stack Developer to fundamentally contribute to the launch of a broader portfolio of products, in collaboration with a number of major global clients and partners. … Core Skills/Experience required for the Full Stack Developer Good knowledge of building a web application using Node.js, JavaScript, and ideally Typescript, React, React Native Experience in ORMs (like Sequelize), RESTful APIs, MQTT, gRPC, GraphQL. Comfortable working with 3rd-party APIs like Google APIs, FCM, Twilio SMS … message queues like RabbitMQ. Familiarity and operational knowledge of Linux and Docker. Experience building and maintaining CI/CD pipelines, GitHub Actions, and AWS developer tools like Code commit, build, deploy and pipeline. Excellent communication and teamwork skills An analytical mind, attention to details and security Enjoys working in More ❯

Technical Product Manager – Developer Tools/UI Frameworks - Javascript/Typescript Location: Central London (Hybrid – 2 days WFH) Salary: Up to £140,000 Benefits: Private healthcare, gym membership, hardware budget, and more A rare opportunity to join one of the most technically advanced frontend engineering teams in the … world. This high-growth software company has built what many in the industry consider the gold standard in JavaScript developer tools, relied upon by 90% of Fortune 500 companies, major investment banks, and tech-first businesses. Originally started as a side project by engineers for engineers, it has … A Computer Science degree or a similar technical background Experience as a QA Engineer, Product Manager, or Technical Business Analyst A good understanding of JavaScript and frameworks like React or Angular Familiarity with Agile environments and cross-functional team collaboration Strong analytical thinking and attention to detail A user More ❯

Technical Product Manager – Developer Tools/UI Frameworks - Javascript/Typescript Location: Central London (Hybrid – 2 days WFH) Salary: Up to £140,000 Benefits: Private healthcare, gym membership, hardware budget, and more A rare opportunity to join one of the most technically advanced frontend engineering teams in the … world. This high-growth software company has built what many in the industry consider the gold standard in JavaScript developer tools, relied upon by 90% of Fortune 500 companies, major investment banks, and tech-first businesses. Originally started as a side project by engineers for engineers, it has … A Computer Science degree or a similar technical background Experience as a QA Engineer, Product Manager, or Technical Business Analyst A good understanding of JavaScript and frameworks like React or Angular Familiarity with Agile environments and cross-functional team collaboration Strong analytical thinking and attention to detail A user More ❯

Job Description Frontend Software Developer with Javascript and HTML Our Client is looking to recruit Frontend Software Developer with at least 3 to 5 years experience of developing Frontend software with Javascript and HTML Working as part of the Digital team, you'll be responsible for … Travel Company. The Role You will be responsible for: Own the frontend of the eCommerce website, making continual improvements Collaborating with the back end developer and design resource to deliver improved UI & UX Participate in design discussions and be the voice of the customer on usability Skills and Experience … Excellent working knowledge of HTML, JavaScript, jQuery, CSS & React Framework Previously delivered multiple responsive websites Happy to develop from both wireframes and full designs Experience of working with and developing alongside a CMS (preferably with Umbraco) Capable of working with multiple (REST) APIs documented with e.g. OpenAPI/swagger More ❯

Job Title: Senior JavaScript/TypeScript Developer – UI (AI Interfaces) & Excel Add-in Location: London - (Hybrid) Type: Full-time About Us: Cornspring is a dynamic start-up developing Family Office services through a unique combination of innovative technology and data management excellence. Our platform leverages state-of-the … excellence in engineering, a powerful customer focus and attention to problem-solving through great design. Job Description: We are seeking an experienced Front-end Developer to join our team, focusing on building our Excel Add-in solutions and web portal platform. You will be responsible for developing sophisticated data … AWS services while delivering exceptional user experiences in both Excel and our React-based web portal. The Role We’re looking for a Senior JavaScript/TypeScript Developer who thrives at the intersection of elegant UI development and advanced Excel Add-in engineering. You’ll lead development on More ❯

Angular Developer - Contract We are looking for a contract Front End Angular Developer for a leading IT consultancy to work on a gaming client where you will be building and migrating design systems. This is initially a 3-month contract, INSIDE IR35 paying £400-420 per day to … start 5th May 2025 Experience building solutions from scratch using Angular Previous experience with building and migrating design systems. Significant experience writing native JavaScript Understanding of web design and user experience Experience within Agile software development process Must be a UK resident and able to work 1-2 days More ❯

Angular Developer - Contract We are looking for a contract Front End Angular Developer for a leading IT consultancy to work on a gaming client where you will be building and migrating design systems. This is initially a 3-month contract, INSIDE IR35 paying £400-420 per day to … start 5th May 2025 Experience building solutions from scratch using Angular Previous experience with building and migrating design systems. Significant experience writing native JavaScript Understanding of web design and user experience Experience within Agile software development process Must be a UK resident and able to work 1-2 days More ❯

TypeScript/React Developer – High-Performance Trading Platform Take ownership of automating and scaling a platform that is critical to the success of a cutting-edge high-frequency trading system, handling immense data volumes at extreme speeds. This is an opportunity to work at the forefront of Quantitative Investment More ❯

TypeScript/React Developer – High-Performance Trading Platform Take ownership of automating and scaling a platform that is critical to the success of a cutting-edge high-frequency trading system, handling immense data volumes at extreme speeds. This is an opportunity to work at the forefront of Quantitative Investment More ❯

Senior Netsuite Developer Our Client is a leading company looking to recruit a Senior Netsuite Developer with Javascript and SQL, possessing extensive Netsuite OneWorld expertise. Responsibilities: Develop applications for Netsuite using Javascript and Oracle SQL. Capture business requirements and develop solutions. Conduct user testing & training, and … equivalent certifications. Technical working knowledge of NetSuite OneWorld Financials platform, including relevant NetSuite certifications. At least 5 to 7 years of experience developing in Javascript and Oracle SQL, with a minimum of 5 years in NetSuite OneWorld. Extensive experience of all NetSuite financial modules and their interfacing with other More ❯

Angular Software Engineer Angular Material, Angular, UI, HTML5, CSS, NgRX, RXJS, TypeScript, UX Design. London based role - Applicant must be based in the UK – Perm Role Fin-Tech - Portfolio management – £80000 plus bonus and benefits Harrington Starr has partnered with More ❯

Angular Software Engineer Angular Material, Angular, UI, HTML5, CSS, NgRX, RXJS, TypeScript, UX Design. London based role - Applicant must be based in the UK – Perm Role Fin-Tech - Portfolio management – £80000 plus bonus and benefits Harrington Starr has partnered with More ❯

Job Description Senior Netsuite Developer Our Client is a leading company who are looking to recruit a Senior Netsuite Developer with Javascript and SQL with extensive Netsuite OneWorld expertise. You will have a degree in Computer Sciences or equivalent certifications. Must have technical working knowledge of NetSuite … OneWorld Financials platform, including relevant NetSuite certifications. Ideally have at least 5 to 7 years experience of developing in Javascript and Oracle SQL in order to develop applications for Netsuite including a minimum 5 years in NetSuite OneWorld. Experience of full software delivery lifecycle including capturing business requirements, developing More ❯