Senior Frontend Engineer I - eCommerce

Responsibilities

• Own frontend features and components across checkout, payments, scheduling, sales-assisted, and partner booking flows.
• Build accessible, high-performance customer-facing features with React, Next.js, and TypeScript.
• Contribute to frontend architecture using server and client components, TanStack Query, Zustand, React Hook Form, and Zod.
• Integrate commerce APIs and third-party services including payment, authentication, mapping, analytics, and promotion systems.
• Ship and analyze growth experiments across the booking funnel, including conversion and guardrail metrics.
• Instrument product behavior, errors, performance, consent, and marketing attribution.
• Write unit, component, API-mocked, and end-to-end tests using Vitest, Testing Library, MSW, and Playwright.
• Own production outcomes through feature flags, dashboards, monitoring, and incident follow-through.
• Collaborate with Product, Design, Marketing, and Backend teams on component libraries and API contracts.
• Provide technical guidance through design reviews and code reviews, and mentor junior engineers.

Requirements

• Typically 4+ years of professional frontend engineering experience, including at least 3 years building production applications with React and TypeScript.
• Strong experience with Next.js or a comparable React framework, including server-side rendering, routing, and server/client rendering tradeoffs.
• Deep understanding of semantic HTML, modern CSS, responsive layout, browser behavior, networking, caching, and rendering performance.
• Experience with state management, data fetching, complex validated forms, and transactional or payment flows.
• Strong testing experience across unit, component, and end-to-end layers.
• Working knowledge of WCAG 2.1 AA, Core Web Vitals, frontend observability, and product analytics.
• Hands-on experience with CI/CD practices and cloud hosting such as GitHub Actions and AWS.
• Track record of leading complex features from design through production in ambiguous environments.
• Strong communication and cross-functional collaboration skills.
• Preferred experience includes Stripe.js, Affirm, commercetools, Voucherify, Tailwind CSS, design systems, consent management, multi-region products, growth engineering, marketing attribution, Auth0, scheduling or booking systems, consumer healthcare, and regulated industries.

Benefits

• Free whole-body scans for each team member.
• Growth opportunities and flexible career development paths.
• Weekly team gatherings for connection and socializing.
• Flexible vacation policy with encouragement to take time away.
• Commuter benefits covering transit and parking costs.
• 401(k) plan with pre-tax contributions and no current company matching contributions.
• Health, dental, vision, and mental health coverage.
• The role requires applicants to be legally authorized to work in the United States without current or future employer sponsorship.
• The base salary is $145,000 to $170,000 in local currency, depending on experience and geographic location.