Software Engineer - Reactjs (Tier 1 | BTech/B.E)

Overview

About us:
Luna is a health-tech company reimagining personal health through an integrated ecosystem of hardware, software, and intelligence. At its core is LifeOS, Luna’s adaptive health operating system that interprets biometric data from the Luna Ring and other future devices to deliver real-time guidance on energy, circadian rhythm, and recovery. With science-first design and a global user base, Luna aims to make precision health both accessible and aspirational.

About the role:
As a Software Engineer (Web) at Luna, you will own the frontend of our core products — from architecting component systems to shipping production features. You will work closely with designers, backend engineers, and product managers to translate ideas into performant, accessible, and maintainable web experiences. This is a hands-on engineering role; you will write code every day.

Responsibilities:

• Build and maintain high-quality React.js applications that are fast, scalable, and accessible.
• Architect reusable component libraries and design systems in collaboration with the design team.
• Write clean, well-tested TypeScript/JavaScript code with a focus on long-term maintainability.
• Optimise web performance — Core Web Vitals, lazy loading, code splitting, and bundle analysis.
• Integrate frontend applications with RESTful and GraphQL APIs.
• Participate in code reviews, provide constructive feedback, and uphold engineering standards.
• Collaborate with product and design to shape feature direction and UX decisions.
• Debug and resolve complex issues across browsers and devices.
• Stay current with the React ecosystem and advocate for best practices within the team.

Requirements:

• 1+ years of professional experience building production web applications.
• B.E/BTech from reputed university/college
• *Deep expertise in React.js *— hooks, context, performance optimisation, and component architecture.
• Proficiency in JavaScript (ES6+) and TypeScript.
• Solid understanding of HTML5, CSS3, and responsive/adaptive design
• Experience with state management solutions (Redux, Zustand, React Query, or similar).
• Familiarity with testing frameworks such as Jest and React Testing Library.
• Working knowledge of Git-based workflows, CI/CD pipelines, and code review practices.
• Strong communication skills and the ability to work independently in a remote-first environment.