Principal Frontend Engineer
Summary
Principal Frontend Engineer at Career Renew in San Francisco builds and scales a high-traffic digital card marketplace using React, TypeScript, and Next.js, handling millions of transactions monthly.
Overview
Principal Frontend Engineer – Hybrid role in San Francisco.
Salary range: $220K-$270K + bonus (10‑12%) + significant equity.
We are building a cutting‑edge digital card marketplace that offers grading, authentication, secure vaulting, and digital pack openings (Slab Packs™). Our platform is scaling from 1.5billion to 2.5billion transactions per month.
What will you be doing?
- Define and own the architectural vision for all web applications, ensuring systems are modular, performant, and resilient at scale.
- Lead the modernization of the frontend architecture – migrating monolith repos to microservices and building net‑new category launches (new categories ship in 2‑3 months).
- Design high‑concurrency frontend systems that can handle a million+ users hitting the site within minutes during drops and promotional moments.
- Set the standard for the frontend discipline by establishing patterns, build pipelines, and best practices across the engineering organization.
- Partner with product, marketing, and executive leadership to influence the roadmap and ensure technical debt is managed as the platform rapidly scales into new categories.
Requirements
- 8‑15 years of experience in frontend engineering with 2+ years in staff/principal roles at B2C companies (Mandatory).
- 2+ years in staff/principal architectural leadership capacity; owned frontend architecture end‑to‑end, not just shipped features (Mandatory).
- Experience at a marketplace, e‑commerce, or real‑time consumer platform (e.g., Goat, StockX, Fanatics, DraftKings, Uber) (Mandatory).
- Designed systems handling high‑traffic events (drops, auctions, promotions, live transactions) for real users (Nice‑to‑have).
- Degree in Computer Science or related technical field (Mandatory).
- Expert in React, TypeScript, and Next.js (Mandatory).
- AI‑native engineering; fluent in Claude, Cursor, and able to use an in‑house harness for daily development (Mandatory).
- Strong system architecture and web performance optimization experience (Mandatory).
- Experience with SSR/SSG, AWS, and modern build tools (Nice‑to‑have).
- Can set standards and design direction for a growing, distributed team (Mandatory).
- Articulates technical decisions clearly to non‑technical stakeholders (product, marketing, execs) (Mandatory).
- Consumer‑facing depth; has built dynamic, user‑facing products at scale (Mandatory).
