Senior Frontend Software Engineer (JS, TS, browser APIs) IRC269765

Description

Our client provides a human insight platform that allows organizations to gather feedback from real users interacting with their products.

We’re looking for a Senior Frontend Software Engineer with strong expertise in JavaScript, TypeScript, and browser APIs, to help drive the development of our browser extension used by participants across our research platform. This is a hands-on role focused on Manifest V3 WebExtensions, requiring experience with media APIs, cross-browser behavior (Chrome and Firefox), and a mindset for building resilient, privacy-aware client-side code.
This role is ideal for someone who thrives on technical challenges, loves working close to the browser, and can design efficient, clean implementations for real-world user interaction.

Requirements

• 6–8+ years of frontend development experience
• Deep knowledge of JavaScript and TypeScript
• Solid experience with WebExtensions API (Manifest V3), especially service_worker, runtime, tabs, webNavigation, storage, and scripting
• Experience working with Lit and React
• Hands-on use of media APIs such as getUserMedia, getDisplayMedia, MediaRecorder, etc.
• Understanding of browser behavior differences, especially between Chrome and Firefox
• Experience debugging browser extension issues and handling edge cases related to permissions and tab lifecycle
• Good sense of usability and performance in constrained environments (browser extensions)
• Proven ability to work independently in scoped initiatives with tight constraints
• Clear written and verbal communication in English

Job responsibilities

• Design and implement new features in our Manifest V3 WebExtension, with a strong focus on performance, maintainability, and security
• Handle media capture, tab management, and runtime messaging logic across browser contexts
• Collaborate with other engineers and product stakeholders to define technical approaches
• Ensure cross-browser compatibility and graceful fallbacks for unsupported features
• Write reliable, well-documented code with meaningful test coverage
• Participate in code reviews, demos, and technical discussions with a focus on pragmatic decisions and shared understanding
• Identify opportunities to simplify scope or streamline implementation without sacrificing quality

What we offer

Culture of caring. At GlobalLogic, we prioritize a culture of caring. Across every region and department, at every level, we consistently put people first. From day one, you’ll experience an inclusive culture of acceptance and belonging, where you’ll have the chance to build meaningful connections with collaborative teammates, supportive managers, and compassionate leaders. 

Learning and development. We are committed to your continuous learning and development. You’ll learn and grow daily in an environment with many opportunities to try new things, sharpen your skills, and advance your career at GlobalLogic. With our Career Navigator tool as just one example, GlobalLogic offers a rich array of programs, training curricula, and hands-on opportunities to grow personally and professionally.

Interesting & meaningful work. GlobalLogic is known for engineering impact for and with clients around the world. As part of our team, you’ll have the chance to work on projects that matter. Each is a unique opportunity to engage your curiosity and creative problem-solving skills as you help clients reimagine what’s possible and bring new solutions to market. In the process, you’ll have the privilege of working on some of the most cutting-edge and impactful solutions shaping the world today.

Balance and flexibility. We believe in the importance of balance and flexibility. With many functional career areas, roles, and work arrangements, you can explore ways of achieving the perfect balance between your work and life. Your life extends beyond the office, and we always do our best to help you integrate and balance the best of work and life, having fun along the way!

High-trust organization. We are a high-trust organization where integrity is key. By joining GlobalLogic, you’re placing your trust in a safe, reliable, and ethical global company. Integrity and trust are a cornerstone of our value proposition to our employees and clients. You will find truthfulness, candor, and integrity in everything we do.

About GlobalLogic

GlobalLogic, a Hitachi Group Company, is a trusted digital engineering partner to the world’s largest and most forward-thinking companies. Since 2000, we’ve been at the forefront of the digital revolution – helping create some of the most innovative and widely used digital products and experiences. Today we continue to collaborate with clients in transforming businesses and redefining industries through intelligent products, platforms, and services.