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Senior Browser Extension Engineer
60,000 - 60,000 GBP
Trafalgar Talent Ltd
West Street, Fareham
60,000 - 60,000 GBP
Requirements
Must:
We are looking for candidates with a minimum of 5 years of commercial experience using TypeScript and React, including advanced TypeScript features. Strong JavaScript expertise is essential, particularly in asynchronous programming, closures, and functional patterns. Candidates should have in-depth knowledge of browser extension architecture and APIs, as well as experience with Redux, Webpack, Jest, and other front-end tools to maximize performance and scalability. Strong debugging skills and the ability to resolve complex technical issues are also necessary. A passion for software craftsmanship, mentoring, and driving best practices will set you apart.
Technologies
Jest
NPM
Webpack
UX UI Design
Responsibilities
As a Senior Browser Extension Engineer, you will architect and develop robust, high-performance browser extensions using TypeScript, React, and modern frontend tooling. Your role will involve designing scalable, well-structured solutions to complex technical challenges, debugging and reverse-engineering unfamiliar code, and driving performance optimizations to enhance UI responsiveness. You will also ensure fault-tolerant integrations that adapt to diverse website implementations.
Collaboration is key, as you will work closely with engineers, designers, and product teams to align browser extension functionality with app and web platforms. You will provide technical leadership during cross-functional discussions and partner with support and QA teams to diagnose and resolve technical issues. Additionally, mentoring junior engineers and enforcing high technical standards through thorough code reviews will be important aspects of your role.
You will develop privacy-first features, ensuring secure handling, storage, and transmission of sensitive data while advocating for secure coding practices and proactively mitigating security risks. Testing and quality assurance will also be part of your responsibilities, as you improve test coverage for internal npm packages and shape the automated testing strategy for browser extensions.
Description
This position offers an exciting opportunity to work on complex engineering challenges and influence key technical decisions that impact millions of users worldwide. We provide an exceptional benefits package, including a salary range of £50,000 - £60,000, up to a 10% annual performance-based bonus, and 28 days of annual leave (with additional accrual for length of service).
Additional benefits include private healthcare and dental care (BUPA), a pension scheme, Netflix and Spotify subscriptions, gym and golf memberships, and access to an onsite bar, beer fridges, and a cocktail lounge. We also offer onsite hairdressers and company-funded meals, snacks, and drinks. Regular company events and social activities are part of our culture.
This is a fantastic opportunity to join a cutting-edge company that values innovation and technical excellence. Please note that this is an office-based role in Segensworth. If you have the skills and experience required, we encourage you to apply now!
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You can find JavaScript Developer salaries in the UK here.
How many JavaScript Developer jobs are in the UK?
Currently, there are 1091 JavaScript openings. Check also: React jobs, Angular jobs, Vue jobs, TypeScript jobs, NodeJS jobs - all with salary brackets.
Is the UK a good place for JavaScript Developers?
The UK is one of the best countries to work as a JavaScript Engineer. It has a vibrant startup community, growing tech hubs and, most important: lots of interesting jobs for people who work in tech.
Which companies are hiring for JavaScript Developer jobs in the UK?
BAE Systems, Graphcore, Computershare, DataAnnotation, RDT Ltd, Reedsy, Unisys among others, are currently hiring for JavaScript roles in the UK.
The company with most openings is Proactive Appointments Limited as they are hiring for 34 different JavaScript Developer jobs in the UK. They are probably quite committed to find good JavaScript Developers.
The company with most openings is Proactive Appointments Limited as they are hiring for 34 different JavaScript Developer jobs in the UK. They are probably quite committed to find good JavaScript Developers.