Senior Frontend Engineer

Job Title: Senior Frontend Engineer

About the Role

We’re looking for a Senior Frontend Engineer to play a pivotal role in our Marketplace web rewrite initiative. You’ll lead the rebuild of our highest-traffic user journeys and establish the frontend architecture, patterns, and standards that will be used across the entire platform for years to come.

This is a senior-level role with Staff-level scope and impact . We’re growing our engineering levels thoughtfully, and we expect the right candidate to naturally progress into a Staff Engineer position as they expand their influence and ownership across teams.

Location: In-person at our NYC headquarters (4 days/week, Monday-Thursday)
Compensation: 170,000 - 210,000 base salary + equity (commensurate with experience)

What You’ll Do

• Own major initiatives end-to-end, starting with high-impact surfaces like Search Results (SRP) and Product Details (DLP) , with clear success metrics around Core Web Vitals, SEO, and conversion.
• Lead technical design for complex projects (RFCs/design docs), drive alignment with Product and Design, and make pragmatic, high-quality tradeoffs.
• Define and champion reusable frontend patterns in a modern Next.js App Router codebase — including routing, data fetching, caching, component architecture, error boundaries, and analytics.
• Raise the overall engineering quality bar through code reviews, standards, and hands-on mentorship for a junior-leaning team.
• Improve developer velocity by enhancing tooling and practices (Playwright testing, Datadog observability, CI/CD hygiene, etc.).
• Collaborate closely with backend engineers to shape efficient API contracts that unlock better frontend performance and faster iteration.

Tech Stack

• Frontend: Next.js (App Router), React, TypeScript, Tailwind CSS, shadcn/ui
• Testing: Playwright
• Observability: Datadog
• Backend: Ruby on Rails + Node.js on AWS (Postgres + MongoDB)

Qualifications

We’d love to hear from you if you have:

• 7+ years of experience building production-scale web applications (or equivalent senior-level impact).
• Deep expertise in React and modern frontend architecture, particularly with Next.js (SSR + App Router).
• Proven track record leading major rewrites or migrations of high-traffic web experiences, with measurable improvements in Core Web Vitals, SEO, conversion, and reliability.
• Strong technical judgment and comfort leading ambiguous, high-impact projects from ideation through rollout and measurement.
• A high engineering bar — disciplined testing, observability-first mindset, and passion for maintainable, scalable code.
• Excellent communication and mentorship skills, with the ability to elevate the entire team.

We encourage you to apply even if you don’t meet every single requirement. We value potential, strong problem-solving skills, and cultural fit.

Growth Path

This role is designed for growth. You’ll start by owning critical surfaces (SRP/DLP) and evolve into setting organization-wide frontend standards, influencing adjacent teams, and leading multiple high-impact initiatives as our rewrite program expands.