Staff Frontend Engineer

The role

A Staff Frontend Engineer will build a clinical design system and rethink hospital workflows. You will develop interfaces that render real-time clinical data and define frontend patterns and rendering architecture.

What you will do

• Build a clinical design system from scratch
• Push hospital workflows into the modern age
• Render real-time clinical data instantly
• Architect the data layer, caching, and subscription patterns over GraphQL
• Engineer for accessibility, resilience, and performance
• Turn complexity into clarity for clinical and operational data
• Define the frontend from first principles including patterns, state management, and rendering architecture

Required qualifications

• Minimum of 10 years of professional software engineering experience, with deep focus on frontend
• Expertise across the frontend stack including TypeScript, JavaScript, React, HTML, CSS, browser internals, rendering performance, state management and building real-time, reactive UIs against GraphQL
• Comfortable adopting new tools as needed
• Experience with client-side data loading and management: caching, freshness, ownership, and how to optimize push updates
• Understanding of the browser rendering cycle, how and when the DOM decides what to repaint, and the instinct to profile and optimize for a responsive, data-dense interface
• Well-versed in modern React patterns and functional programming principles, including advanced use of custom hooks to build performant, maintainable, and reusable component architectures at scale
• Deep fluency with async control flow in JavaScript (Promises, async/await) and a track record of diagnosing race conditions, ordering issues, and unhandled rejections in real-time systems
• Strong ability to work in a fast-paced, collaborative, and innovative team environment
• Exceptional problem-solving skills, with a track record of tackling challenging engineering problems
• Intellectually curious with a growth mindset
• Familiarity with open-source technology and a desire to explore and experiment with new solutions
• Experience building 0-1 with a strong product sense

Nice to have

• A passion for making a meaningful impact in the healthcare industry through software innovation is a plus

About the company

Lunar is a stealth technology company building a new type of software platform for health systems. Their platform is an AI-native hospital information system designed to transform clinical and operational workflows.