[Remote] Senior Frontend Engineer

Note: The job is a remote job and is open to candidates in USA. Seed Health is a microbiome science company pioneering clinically validated innovations for gut and whole-body health. The Senior Frontend Engineer leads frontend implementation for Seed's digital experience, building fast, accessible, pixel-perfect features on its React/Next.js platform while contributing to the shared design system. The role partners with Design and Product, owns frontend quality, and mentors engineers through code review and pairing.

Responsibilities

• Lead the frontend implementation of new features, from Figma through production
• Translate designs into production-ready code with obsessive attention to spacing, typography, motion, and responsiveness
• Own the frontend architecture behind your features: state management, data fetching, rendering performance, and test coverage
• Build accessible, performant interfaces that hold up across browsers and devices
• Ship safely: feature flags, A/B tests, instrumentation, and clear rollback paths
• Partner early with Design and Product to assess feasibility and resolve ambiguity
• Build composable, reusable React components into our shared library, following its architecture, APIs, and documentation standards
• Use design tokens and theming consistently so that a component built once is available everywhere
• Document what you add via usage guidelines, code examples, and Storybook stories
• Conduct thoughtful code reviews that hold the squad to a high standard in component design, accessibility, and visual fidelity
• Mentor engineers on the team through pairing
• Champion consistent use of the shared component library across our web applications

Skills

• 6+ years of professional experience in frontend engineering
• A strong portfolio or GitHub that shows your frontend work and your eye for UI craft
• A track record of shipping production frontend features end-to-end, on schedule
• Experience working day to day with designers and product managers
• Expert-level React and Next.js (TypeScript required)
• Strong understanding of design systems, design tokens, and component API design
• Strong fundamentals in state management, data fetching, rendering performance (Core Web Vitals), and testing
• Comfortable working from Figma designs and specs
• Experience with Storybook and at least one of CSS-in-JS, CSS Modules, or Tailwind CSS
• Working knowledge of web accessibility standards (WCAG)
• Clear communicator; able to articulate design and technical trade-offs to engineering, design, and product partners
• Comfortable building within an architecture someone else owns while still bringing an independent point of view
• Experience giving and receiving constructive feedback
• Experience translating motion design concepts into production-ready animations (Framer Motion, GSAP)
• Experience in high-growth DTC or e-commerce companies, ideally on a headless Shopify stack
• Fluency with AI-assisted development (Claude Code, Cursor, or similar)
• Knowledge of A/B testing frameworks and experimentation methodologies
• Background in health, wellness, or science-focused consumer brands
• Experience at a consumer brand known for design craft and obsessive attention to detail

Benefits

• Equity
• Multiple medical, dental, and vision plans, with generous employer contributions and coverage options
• Access to top-tier virtual care
• Complimentary Aaptiv membership for fitness and mental wellness
• HSA with employer contributions
• Fullscript discounts for supplements
• 12 free therapy sessions per year for all employees and eligible dependents
• Coaching, meditation, and 24/7 access to Spring Health’s digital tools and care navigation
• 401(k) plan through Betterment, featuring a 100% match on the first 3% and 50% on the next 2% of contributions—fully vested from day one
• 18 weeks of fully paid parental leave, with the flexibility to phase your return
• Four weeks of paid transition time at 80% capacity or four days per week
• 15 vacation days
• 7 sick/safe days
• 2 personal days
• 10 Recharge Days (Summer + Winter)
• 15 paid company holidays each year
• Remote-first culture that prioritizes autonomy and clarity
• $750 one-time remote work setup stipend
• $450 quarterly wellness and workplace stipends via JOON
• Pet insurance
• Life and disability coverage
• Learning & development
• A vibrant culture rooted in science and impact

Company Overview

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