Technical Lead

Highly skilled and experienced Senior Developer with in-depth expertise in building and maintaining browser extensions, advanced JavaScript programming, and web automation. The ideal candidate should have strong problem-solving abilities, be comfortable working with complex browser APIs, and possess a deep understanding of modern web architecture and security contexts like CORS and shadow DOM. Key Responsibilities: - Design, develop, and maintain browser extensions for Chrome, Firefox, and other major browsers using their respective extension APIs. - Work extensively with Chrome Extension Manifest V3, background/service workers, content scripts, message passing, and permission models. - Write clean, efficient, and modular JavaScript code from vanilla JS to advanced OOP patterns and Promises. - Handle complex async workflows, fetch APIs, and interactions across cross-origin iframes securely. - Leverage the Shadow DOM for creating encapsulated UI components and handle styling/scripting challenges. - Implement and maintain web automation logic using native DOM APIs and event simulations. - Drive architectural decisions, evaluate technical trade-offs, and provide innovative solutions. Required Skills & Qualifications: Browser Extension Expertise: - Strong experience with Chrome Extensions APIs (Manifest V3), Firefox WebExtension APIs - Deep understanding of extension architecture: background scripts, content scripts, messaging, permissions, etc. - Knowledge of Chrome debugging tools, devtools integration, and browser internals. JavaScript: - Expert-level knowledge in vanilla JavaScript including ES6+, dynamic imports - Strong grasp of OOP in JS, prototypes, and closures - Mastery of Promises, async/await, and event loops Web APIs and Architecture: - Proficiency in DOM traversal, manipulation, and event handling - Experience working with fetch, XHR, and real-time APIs - Understanding of CORS, Cross-Origin Frame Messaging, and Web Security Advanced Web Features: - Hands-on with Shadow DOM, Web Components, and encapsulated styles - Familiarity with OAuth, SSO integration, and token-based auth workflows Automation & Scripting: - Strong skills in web automation, synthetic events, and page interaction scripting - Experience with tools like Puppeteer, Playwright, or custom DOM-based automation logic (a plus) Nice to Have: - Experience with TypeScript - Familiarity with CI/CD pipelines and automated testing for extensions - Contributions to open-source extension projects or plugins - Experience working in Agile teams Contact Person: Sarita Rathi