Frontend Platform Engineer — Core Architecture & API

Replit; California (MO); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Competitive Salary & Equity

401(k) Program (US)

Health, Dental, Vision and Life Ins.

Short Term and Long Term Disability

Paid Parental Leave

Flexible Time Off (FTO) + Holidays

Commuter Benefits (In-Office & US Only

Monthly Wellness Stipend

Autonomous Work Environment

In Office Set-Up Reimbursement (In-Offi

Quarterly Team Gatherings

In Office Amenities (In-Office Only)

Job summary

Replit is seeking a Product Engineer focused on the frontend platform to own the frontend architecture behind core product experiences, including frameworks, the API and data layer, and testing infrastructure.

You'll partner with engineering, product, and design, work with the DevEx and Design Engineering teams, and help plan, ship, and operate the frontend foundations used across high-traffic, latency-sensitive workloads. This is a full-time role based in Foster City, CA with in-office days.

Qualifications

• Experience shipping and operating user-facing software in production.
• Designed frontend architecture other teams build on (frameworks, state, routing, SSR/CSR, migrations).
• Built and operated an API/data layer (REST/GraphQL, error handling, caching).
• Measured and improved client performance with instrumentation and monitoring.
• Made and explained architecture tradeoffs across UX, correctness, delivery speed, and maintainability.
• Comfortable in modern web stacks (TypeScript, React, Next.js, Node.js).

Responsibilities

• Design platform APIs and shared primitives (not just components) with clear contracts, documentation, and upgrade paths that other teams adopt
• Profile and instrument real user journeys, then ship the changes that move the numbers
• Roll out cross-cutting changes safely with codemods, migration paths, and staged rollouts
• Set technical direction in design and architecture reviews, and document the decisions and operational expectations behind them
• Work directly with product teams to turn their friction into reusable platform improvements

Skills

Frontend architecture

Team collaboration

UI performance

TypeScript

React

Next.js

Node.js

Tools

REST/GraphQL

Job description

Replit is seeking a Product Engineer focused on the frontend platform to own the frontend architecture behind core product experiences, including frameworks, the API and data layer, and testing infrastructure.

You'll partner with engineering, product, and design, work with the DevEx and Design Engineering teams, and help plan, ship, and operate the frontend foundations used across high-traffic, latency-sensitive workloads. This is a full-time role based in Foster City, CA with in-office days.