Senior Frontend Software Engineer

Courier Health, Inc.; New York (NY); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Medical, dental, vision

Unlimited PTO

401(k) match

Employee referral program

Paid parental leave

Healthy lifestyle stipend

Job summary

Courier Health, Inc. is seeking a senior frontend engineer to own architecture, state management, and the ongoing evolution of a health-tech UI. You will help define a design system, establish patterns, and ship high-impact features with product and design teams.

You will mentor engineers, set quality standards, and apply LLm-assisted development to scale the frontend as usage grows. This is a hands-on, early-stage role with broad ownership.

Qualifications

• 6+ years of professional software engineering experience with React and TypeScript.
• Proven ownership of a UI design system and shared component library.
• Experience building frontend architecture at scale for health-tech.
• Comfort with ambiguity and early-stage ownership.
• B.S. or higher in CS or equivalent industry experience.

Responsibilities

• Own frontend discipline and architecture decisions.
• Design system evolution and shared components.
• Ship end-to-end features with product and design.
• Mentor engineers and drive code quality.
• Collaborate on on-call rotation and observability.

Skills

React

TypeScript

UI architecture

Mentoring

Tools

GraphQL

Playwright

TailwindCSS

Job description

• Our product is how life sciences teams see and act on what’s happening with their patients
• Every screen either helps someone start therapy sooner or gets in the way. We exist to get patients faster, better access to life-saving therapies, and the interface is where that promise holds up or breaks down. This role owns that
• You’ll be a senior frontend voice at a company where the frontend is still being written. The architecture, the design system, the patterns the rest of the team will follow for years - much of it doesn’t exist yet. You’ll build it, and then use it to ship the features customers feel
• If you’ve spent your career inheriting someone else’s component library, this is the other side of that. You set the standard, then live with it
• The product surface is growing fast, the problems are real, and the decisions you make in your first six months will still be visible three years from now
• A design system the whole team builds on. Shared components, patterns, and primitives that make the right thing the easy thing
• Not a storybook nobody opens - a foundation engineers reach for because it’s faster than rolling their own. You’ll define it, evolve it, and hold the line on quality as the product grows
• Frontend architecture that scales with the product. Our user base and surface area are both growing quickly
• You’ll make the structural calls - state, data fetching, module boundaries, performance — that keep the codebase fast to work in at ten times its current size. Get these right early and nobody notices. Get them wrong and everyone does
• Features customers feel, owned end to end. You’ll work directly with product and design to scope and ship the things that matter most, from first sketch to production. Strong UX instincts matter here. You’ll push back on a flow that doesn’t work and propose a better one
• A shipping pipeline engineers trust. Tooling, e2e testing, deployment, and observability that give the team confidence to ship continuously instead of carefully
• You’ll use LLM-assisted development as a real multiplier, not a novelty, and help others do the same. You’ll take part in an on-call rotation - we build it, we support it. And you’ll raise the ceiling around you by mentoring engineers and setting the bar for craft

Benefits

• Medical, dental, vision
• Unlimited PTO
• 401(k) match
• Employee referral program
• Paid parental leave
• Healthy lifestyle stipend

Experience with e2e testing and the tooling that keeps quality high as a team scalesStrong UX instincts and a user-centered mindset. You care what it feels like to use, not just whether it rendersProven ownership of a UI design system — you’ve built and evolved a shared component library, not just consumed oneComfortable with ambiguity and early-stage ownership. You’d rather define the pattern than wait for oneB.S. or higher in computer science or a relevant field, or equivalent industry experience6+ years of professional software engineering experience with React and TypeScriptExperience with GraphQL, Playwright, and TailwindCSSOwned the frontend discipline at an early-stage software companyBuilt LLM-integrated featuresWorked in health-tech or healthcare