24 of 24 JavaScript Engineer Jobs in the UK

## Frontend Software Engineer (JavaScript/TypeScript & React)Apply: Cambridge Office, United Kingdom: Full time: Posted Today: JR101413Darktrace is a global leader in AI-driven cybersecurity, helping organizations stay ahead of evolving threats every day.Darktrace was built on a genuinely differentiated idea: that Adaptive AI could detect … curiosity to grow beyond them. Our Values: Own It | Win as One | Raise Our Bar | Move First. Learn Fast **Job Description:**The Frontend Software Engineer will work both collaboratively and independently to deliver cutting edge cyber security solutions. You will be tasked with creating and maintaining dynamic user interfaces ...

# Frontend Software Engineer (JavaScript/TypeScript & React)DDarktraceCambridgeFull timevia WorkdayPosted 23 Apr 2026Apply on darktrace.com →Darktrace is a global leader in AI for cybersecurity that keeps organizations ahead of the changing threat landscape every day. Founded in 2013, Darktrace provides the essential cybersecurity platform protecting nearly … services are supported by over 2,400 employees around the world. To learn more, visit http://www.darktrace.com.Job Description:The Frontend Software Engineer will work both collaboratively and independently to deliver cutting edge cyber security solutions. You will be tasked with creating and maintaining dynamic user interfaces, enhancing ...

ADLIB is seeking a Lead JavaScript Engineer to join their high-growth, product-led team. In this role, you will create and scale a modern platform used by thousands of customers. Your responsibilities include owning the architecture, guiding a team of engineers, and driving best practices. With ...

Software Engineer (PHP & JavaScript) Bristol, hybrid, typically 1 day a week in the office 50,000 to 60,000 + 28 days holiday + bank holidays, PMI, pension, social events If you like the idea of owning proper, business critical software rather than being one tiny … backend, building and evolving the core systems that power operations, reporting, analytics and their B2B customer portal, while also being comfortable in a modern JavaScript front end. You will work closely with the Head of Development on solution design and architectural decisions, and with end users across the business ...

make the booking process an intuitive and enjoyable digital experience? We're excited to execute these ideas and are looking for an experienced engineer to join us on the journey. The Role We're looking for a Lead Engineer to join our small, full-stack engineering team. … working alongside our other Senior Engineer as one of just two developers responsible for the entire Encore platform — from the customer-facing web app to our React Native mobile app, backend services, and infrastructure. You’ll join at a pivotal moment: we're mid-way through launching Encore ...

your key areas of focus will be enhancing product scalability and usability, helping consistently deliver features that support our customers' success. As a senior engineer, you will work collaboratively with the rest of our cross-functional team to plan and deliver new features and enhancements. You will take ownership … Support our product and engineering managers in prioritisation, scoping and leading delivery of product features Write complex, performant frontend business logic in JavaScript Write and upgrade UI components using JavaScript and Vue.js Write automated tests to assure quality (unit and end-to-end testing) Support, mentor and coach ...

hard technical problems where poor performance or unreliable code shows. What you'll build You'll design and develop scalable applications and APIs in JavaScript, TypeScript and React, and integrate them with the Python APIs behind the platform. Your work will include: Building responsive, data-intensive web and desktop … reviews, CI/CD improvements and decisions on new tools and architecture What you'll need You don't need to be a Python engineer, but you'll work closely with Python APIs, so some familiarity helps. You should be comfortable with HTML5, CSS3, responsive design, browser compatibility ...

Senior Full-Stack Software Engineer (Java & React/Javascript/Angular)****Would you like to help create products to support the sharing of scientific knowledge?****Do you enjoy collaborating to solve complex technical problems?****About the team:**Our dynamic Agile Teams deliver the technology which facilitates researchers … publish quality scientific research. As a Software Engineer, you will build capabilities to improve the quality of scientific research.**About the role:**As a Senior II Software Engineer, you will build capabilities to support scientific researchers through the process of submitting the research for publication. We are continually ...

refocussing the CMS team on higher-value marketing work and making the wider CMS operation more scalable and manageable. As a Senior Software Engineer, you’ll support the Principal Engineer in exploring proof of concepts (POCs), deep diving into agentic opportunities and helping shape how AI can contribute … future of the platform. What you'll be doing: Support the Principal Engineer in exploring technical opportunities across the CMS and wider web and marketing platforms. Explore and prototype proof of concepts (POCs), turning promising ideas into practical options for the team. Deep dive into agentic opportunities and consider ...

refocussing the CMS team on higher-value marketing work and making the wider CMS operation more scalable and manageable. As a Senior Software Engineer, you’ll support the Principal Engineer in exploring proof of concepts (POCs), deep diving into agentic opportunities and helping shape how AI can contribute … future of the platform. What you'll be doing: Support the Principal Engineer in exploring technical opportunities across the CMS and wider web and marketing platforms. Explore and prototype proof of concepts (POCs), turning promising ideas into practical options for the team. Deep dive into agentic opportunities and consider ...

refocussing the CMS team on higher-value marketing work and making the wider CMS operation more scalable and manageable. As a Senior Software Engineer, you’ll support the Principal Engineer in exploring proof of concepts (POCs), deep diving into agentic opportunities and helping shape how AI can contribute … future of the platform. What you'll be doing: Support the Principal Engineer in exploring technical opportunities across the CMS and wider web and marketing platforms. Explore and prototype proof of concepts (POCs), turning promising ideas into practical options for the team. Deep dive into agentic opportunities and consider ...

refocussing the CMS team on higher-value marketing work and making the wider CMS operation more scalable and manageable. As a Senior Software Engineer, you’ll support the Principal Engineer in exploring proof of concepts (POCs), deep diving into agentic opportunities and helping shape how AI can contribute … future of the platform. What you'll be doing: Support the Principal Engineer in exploring technical opportunities across the CMS and wider web and marketing platforms. Explore and prototype proof of concepts (POCs), turning promising ideas into practical options for the team. Deep dive into agentic opportunities and consider ...

Odro Ltd. is seeking a Senior Javascript Developer in the Glasgow area. The role spans the full stack, from greenfield product work to maintaining legacy Node.js applications, using NestJS, TypeScript, GraphQL via Hasura, PostgreSQL and Vue.js. This is a hybrid role with two days per week in our Glasgow ...

inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. Software Engineer III (Java & JavaScript) Do you enjoy designing and developing scalable, high-performance applications using Java and JavaScript? About the team: You will … Understanding of data modelling principles. Ability to work with complex data models. Proficiency in development languages including but not limited to: Java/J2EE, JavaScript, JSP, HTML, Node.js, React, XML, SQL, Windows, UNIX. Experience with Keycloak, Auth0, or another identity provider, including realm configuration, authentication flows, and OIDC client ...

developer to join our team in London. You will enhance our in-house frameworks and core applications, tackling new features and bug fixes with JavaScript, Node.js, and React. Collaborate with project managers, designers and engineers to tailor solutions that meet business needs, uphold quality, and embrace DevOps practices including ...

Dayshape, Edinburgh-based, is seeking a senior software engineer to join the engineering team. You will enhance frontend features, ensure scalable and accessible UI, and work closely with product and QA to deliver value. You’ll own features end-to-end, write tests, and mentor teammates while maintaining ...

Summary As a Lead Software Engineer in Post Tech Technology – Margin and Collateral Services, you will play a pivotal role in an agile team dedicated to enhancing and delivering trusted technology products. You will drive critical technology solutions across multiple technical areas, supporting our firm’s business goals. Your ...

enjoy designing and developing scalable, high-performance applications using Java and JavaScript? Do you enjoy designing and developing scalable, high-performance applications using Java and JavaScript? About The Team You will join the Identity & Access Management team, which owns the authentication and authorisation infrastructure underpinning Elsevier’s global … dimensional data modelling principles Intermediate knowledge of multiple data storage subsystems Confident practitioner in development languages including but not limited to: Java/J2EE, JavaScript, JSP, HTML, Node.js, React, XML, SQL, Windows, Unix. Experience with Keycloak, Auth0, or another identity provider, including realm configuration, authentication flows, and OIDC client ...

Nexus Jobs Limited in Central London is seeking a Javascript Front End Developer to shape the payments experience across platforms. You will craft clean, fast interfaces using Vanilla JS and collaborate with Front-End & Back-End Developers, Architects and Designers. Ideal candidates thrive in an agile environment, can mentor ...

contribute to a culture of inclusion and respect. Discover how you can grow and thrive with us. Job Summary: As a Lead Software Engineer in Post Tech Technology – Margin and Collateral Services, you will play a pivotal role in an agile team dedicated to enhancing and delivering trusted technology ...

Understanding of data modelling principles. Ability to work with complex data models. Proficiency in development languages including but not limited to: Java/J2EE, JavaScript, JSP, HTML, Node.js, React, XML, SQL, Windows, UNIX. Experience with Keycloak, Auth0, or another identity provider, including realm configuration, authentication flows, and OIDC client ...

protects governments, critical infrastructure and some of the world's largest enterprises against identity fraud, deepfakes and sophisticated cyber threats. As a Web Security Engineer you'll collaborate closely with the web development team to ensure security is at the centre of all web based applications. Joining a specialist ...

Javascript and Agile Software Developer – Central London TheClient Developerwill be responsible for thedevelopment and deliveryof all client side aspects of our product,developing new featuresandlaunching new platforms. A successful candidate will have aproven abilityin delivering customer facingJavaScript applications, in an Agile softwaredevelopment environment and a passion for building … 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 ...

Elsevier is seeking a Senior Software Engineer I to design and implement scalable Java and JavaScript applications. You will join the Identity & Access Management team, contributing to authentication and authorisation infrastructure on AWS ECS and EKS. Expect challenging research, design, mentoring, and collaboration with product and customers ...