Replit

Product Engineer, Product Platform (Frontend)

ReplitYesterday
Location

Foster City, CA

Type

Full Time

Salary

USD 200,000 – 300,000

Level

Senior

Role

Frontend Engineer

Posted

Jun 12, 2026

Full TimeSenior

The role

Summary

Replit seeks a Product Engineer to own the frontend platform architecture behind core product experiences, including application frameworks, API and data layers, testing infrastructure, and client performance. You'll work on a small, collaborative team designing platform APIs and shared primitives that enable other engineering teams to ship quickly and reliably. This role requires deep expertise in modern web stacks (TypeScript, React, Next.js, Node.js) and proven experience designing frontend architecture, managing API/data layers, and optimizing client performance at scale.

What you'll do

Frontend Architecture Design and Ownership: Design and maintain sound, consistent frontend architecture including frameworks, state management, routing, and server-side rendering (SSR) vs client-side rendering (CSR) strategies. Ensure the architecture is intuitive and easy for other product teams to build upon, supporting rapid feature development while maintaining code quality and performance.
Platform API and Data Layer Development: Design, build, and operate reliable APIs and data layers with clear contracts, comprehensive documentation, and sensible error handling. Implement effective caching strategies and upgrade paths that other teams can adopt. Support both REST and GraphQL paradigms as needed for different product requirements.
Client Performance Optimization and Instrumentation: Profile real user journeys and instrumenting user-facing surfaces with comprehensive monitoring. Ship performance improvements that move key metrics. Work on identifying and eliminating latency bottlenecks in high-traffic, latency-sensitive workloads.
Cross-Cutting Platform Changes and Migrations: Roll out platform-wide changes safely using codemods, migration paths, and staged rollouts. Ensure backward compatibility and minimize disruption to dependent teams during architectural transitions and infrastructure updates.
Technical Leadership and Documentation: Set technical direction through design and architecture reviews. Document architectural decisions, operational expectations, and best practices. Communicate complex technical tradeoffs clearly to both engineering and product teams.
Cross-Functional Partnership: Work directly with product teams, design engineers, and DevEx team to translate friction points into reusable platform improvements. Collaborate with design teams on design system integration and with DevEx on build tooling and CI/CD improvements.
Testing Infrastructure and Quality Assurance: Develop and maintain testing infrastructure that keeps user-facing surfaces safe to change. Implement monitoring and observability tools that provide confidence in platform reliability and enable rapid iteration.
Codebase Maintainability for AI and Humans: Ensure the codebase remains easy to navigate, change, and extend, including optimization for AI coding agents. Maintain clear naming conventions, logical file organization, and comprehensive documentation that supports different development approaches.

What we look for

Technical

Frontend Architecture DesignProven experience designing frontend architecture that other teams build upon, including decisions around frameworks, state management patterns, routing systems, and SSR/CSR tradeoffs. Demonstrated ability to evaluate architectural options and explain tradeoffs across user experience, correctness, delivery speed, and long-term maintainability.
Production Software DevelopmentExtensive experience shipping and operating user-facing software in production environments. Track record of designing systems that scale reliably and handling production incidents with appropriate monitoring and observability.
API and Data Layer DesignStrong experience building and operating API and data layers using REST and/or GraphQL. Proficiency with error handling strategies, caching mechanisms, rate limiting, and contract definition. Understanding of data consistency, eventual consistency patterns, and their implications for client applications.
Client Performance EngineeringMeasured expertise in identifying and improving client-side performance through instrumentation, monitoring, and optimization. Experience with performance metrics (Core Web Vitals, Time to Interactive, etc.), profiling tools, and the ability to connect performance improvements to user experience and business metrics.
Modern Web Stack ProficiencyComfortable working with TypeScript, React, Next.js, and Node.js. Understanding of modern frontend tooling, build systems, and the broader JavaScript ecosystem. Ability to work effectively across frontend and backend domains.
Platform ThinkingExperience designing shared platform primitives and abstractions that multiple teams depend on. Understanding of versioning strategies, deprecation paths, and API stability considerations. Ability to balance the needs of multiple consuming teams.

Education

Computer Science Degree or EquivalentBachelor's degree in Computer Science, Software Engineering, or related field, or equivalent practical experience demonstrating strong computer science fundamentals. Formal education in data structures, algorithms, and systems design is valuable but not required if offset by strong professional experience.

Experience

Senior-Level Frontend EngineeringMinimum 5-7 years of professional software engineering experience with at least 3-4 years focused on frontend architecture, platform engineering, or infrastructure work. Demonstrated progression from individual contributor to senior levels with scope and impact across multiple teams.
Architectural Decision MakingTrack record of making and defending significant architectural decisions in high-stakes environments. Experience evaluating multiple technical approaches and explaining tradeoffs to stakeholders with different technical backgrounds.
Large-Scale System OperationExperience operating systems serving significant traffic volume. Familiarity with monitoring, alerting, incident response, and continuous improvement processes for production systems.

Skills

Required skills

TypeScriptExpert-level proficiency with TypeScript for type-safe frontend and backend development. Understanding of advanced type system features and their application to building maintainable, scalable applications.
ReactDeep knowledge of React including hooks, state management integration, performance optimization patterns, and component architecture. Experience building reusable component abstractions and design systems.
Next.jsStrong experience with Next.js including server-side rendering, static generation, API routes, and middleware. Understanding of Next.js architecture and its use cases for building scalable frontend platforms.
Node.jsComfortable building backend services and APIs with Node.js. Experience with async programming patterns, performance considerations, and integration with databases and external services.
REST or GraphQL API DesignProven ability to design ergonomic, well-documented APIs. Experience with REST conventions or GraphQL schema design. Understanding of versioning, backward compatibility, and error handling in APIs.
Client Performance OptimizationHands-on experience measuring, diagnosing, and improving client-side performance. Familiarity with browser DevTools, performance monitoring tools, and optimization techniques like code splitting, lazy loading, and caching strategies.
Frontend Testing InfrastructureExperience building and maintaining testing infrastructure including unit tests, integration tests, and end-to-end tests. Familiarity with testing frameworks and approaches that support safe refactoring and architectural changes.

Nice to have

Platform or Infrastructure EngineeringBackground building platform layers, shared libraries, or infrastructure that multiple teams depend on. Experience designing for ease of adoption and understanding common pitfalls of platform work.
Monorepo ManagementExperience working in monorepo environments using tools like Turborepo, Nx, or similar. Understanding of workspace configuration, dependency management across packages, and optimization strategies.
Build Tooling and BundlingFamiliarity with modern build tools (Webpack, Vite, esbuild, etc.) and bundling strategies. Understanding of code splitting, tree shaking, and optimization for production builds.
DevOps and CI/CDExperience with continuous integration, continuous deployment pipelines, and infrastructure-as-code. Comfort with deployment strategies including blue-green deploys, canary releases, and feature flags.
Observability and MonitoringExperience implementing comprehensive observability including logging, metrics, distributed tracing, and alerting. Familiarity with tools like Datadog, New Relic, or similar platforms.
AI-Assisted DevelopmentExposure to AI coding assistants and understanding of how codebase structure, naming conventions, and organization can be optimized for AI tools. Interest in designing systems that work well with both human and AI developers.

Compensation & benefits

Salary

USD 200,000 – 300,000 (annual)

Stock options

Available

Benefits

Competitive Salary and Equity

Competitive compensation package including salary commensurate with experience and equity stake in Replit, aligning your interests with company success and long-term value creation.

Comprehensive Health Coverage

Full medical, dental, and vision insurance coverage for employees and eligible dependents, supporting overall health and wellness.

Retirement Planning

401(k) program with 4% employer match (US employees only), helping build long-term financial security and retirement savings.

Life Insurance and Disability Coverage

Life insurance and both short-term and long-term disability coverage providing financial protection for you and your family.

Paid Time Off and Parental Leave

Flexible time off (FTO) plus paid holidays, paid parental leave, medical leave, and caregiver leave supporting work-life balance and major life events.

Monthly Wellness Stipend

Monthly allowance for wellness activities and services, supporting physical and mental health outside of traditional insurance.

Commuter Benefits

Commuter benefits program for in-office employees, reducing commuting costs and supporting sustainable transportation options.

In-Office Setup Reimbursement

Reimbursement for office equipment and ergonomic setup for in-office employees, ensuring a comfortable and productive work environment.

Autonomous Work Environment

Culture emphasizing autonomy and trust, allowing engineers to work independently and make decisions without excessive micromanagement.

Quarterly Team Gatherings

Regular in-person team events and company-wide gatherings fostering connection, collaboration, and cultural alignment.

In-Office Amenities

High-quality office amenities including coffee, collaborative spaces, and equipment supporting productive in-office work for Foster City-based employees.

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Replit

Replit

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Replit is a platform that allows developers to code in the browser.

San Francisco, California, United StatesFounded 2015replit.com

Tech Stack

Languages
TypeScriptJavaScript/ES6+
Frameworks
ReactNext.jsNode.js
Databases
PostgreSQLRedis
Tools
GitFigmaDatadog or New RelicJestPlaywright or Cypress
Other
Server-Side Rendering (SSR) and Client-Side Rendering (CSR)State ManagementAPI Design PatternsCode Splitting and Performance OptimizationCodemod and Large-Scale Refactoring
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