Salary: 60,000 - 60,000 GBP per year Requirements:
* As a Senior Browser Extension Engineer, I seek candidates with strong commercial experience in TypeScript and React, including advanced TypeScript features and performance optimization for React applications. You should have in-depth knowledge of front-end tooling, such as Redux, Webpack, and Jest, utilizing these tools to maximize performance and scalability in large-scale applications. A deep understanding of browser extension architecture and APIs is essential, along with hands-on experience in implementing and maintaining complex features. Candidates must demonstrate strong software engineering fundamentals, with proven expertise in event-driven and object-oriented programming and their associated design patterns. Additionally, strong JavaScript expertise, particularly in asynchronous programming, event loop mechanics, closures, and functional patterns, is required.
Responsibilities:
* In this role, I will need you to architect and develop robust, high-performance browser extensions using TypeScript, React, and modern frontend tooling. You will clarify and solve ambiguous problems by identifying key requirements, breaking them down into manageable, testable components, and delivering well-engineered solutions. Assessing and integrating third-party tools and libraries will be part of your responsibilities, making strategic decisions to balance trade-offs effectively. You will drive performance optimizations by eliminating bottlenecks, enhancing UI responsiveness, reducing load times, and streamlining event handling. It will also be important for you to quickly understand and debug unfamiliar code, using reverse engineering when necessary to analyze other extensions and diagnose issues.
* Additionally, I expect you to provide technical representation in cross-functional discussions, advising on feasibility, architectural considerations, and key trade-offs to guide smart product decisions. Building privacy-first features while prioritizing secure handling, storage, and transmission of sensitive data will be crucial. Staying vigilant to security threats, applying fundamental browser security principles, and advocating for secure coding practices will be part of your role. Furthermore, you will improve test coverage for internal npm packages by writing unit and integration tests, driving modularity, maintainability, and shaping our automated testing strategy.
Technologies:
* Architect
* Frontend
* JavaScript
* Jest
* NPM
* React
* Redux
* Security
* TypeScript
* Webpack
* UX UI Design
More:
I am looking for someone who is passionate about developing high-performance browser extensions that integrate seamlessly into our ecosystem while tackling complex engineering challenges. You will have the opportunity to influence key technical decisions and contribute to both strategic architecture and hands-on implementation. Your expertise will help us ensure that we build robust and secure solutions that enhance user experience while maintaining privacy and performance.