Staff DevEx Engineer

Replit•Foster City, CA

1d•Hybrid

About The Position

Replit is the agentic software creation platform that enables anyone to build applications using natural language. With millions of users worldwide, Replit is democratizing software development by removing traditional barriers to application creation. This role focuses on accelerating engineering velocity and reducing friction in the Replit development experience by stewarding codebases, tooling, and developer workflows. The Staff DevEx Engineer will directly impact every engineer who ships code at Replit, acting as a force multiplier across all product development teams to enable faster feature delivery, happier developers, and reduced operational overhead. The position requires technical depth in a complex, polyglot codebase and a product mindset to understand infrastructure's impact on developer productivity and customer value. The role also involves close partnership with the AI team on the internal AI platform, which generates over 60% of merged PRs, to improve its output and shape its default stack strategy. This is an early hire in this area, offering agency and an accelerated career path as the team grows.

Requirements

Experienced software engineer (senior through staff) with a track record of improving developer productivity at scale.
Strong proficiency in TypeScript and/or Go and/or Nix.
Expertise in modern build systems and toolchains (e.g., Vite, webpack, esbuild, Go's build/module system).
Proficiency with linters, formatters, testing frameworks, and code generation tools.
Experience managing monorepos or large-scale codebases.

Nice To Haves

Experience building self-service developer platforms (CI/CD, infra, or tooling) used by many engineering teams.
Experience with AI-native development workflows — e.g., OpenCode, Claude Code, Cursor, custom agent skills.
Open-source leadership or community contributions.
Prior tech lead experience.

Responsibilities

Maintain and evolve our codebase structure — a complex TypeScript monorepo, Go services, npm packages, and internal Agentic tooling.
Own the build and test pipelines and optimize them to minimize build times and improve developer iteration speed.
Drive code generation and type-safe interfaces across service boundaries (e.g., GraphQL, Protocol Buffers, gRPC, OpenAPI).
Set the standards for code quality using automation tools such as TypeScript, ESLint, Prettier, and Go linters/formatters — building custom rules and plugins to enforce Replit-specific requirements.
Streamline development setup and the onboarding experience.
Work with platform teams to improve deployment processes, infrastructure integrations, and external tooling.
Keep things fresh and modern in our codebase by adopting and leading migrations to better and faster tools.
Partner with the AI team on our internal AI platform (which generates >60% of all merged PRs at Replit) to improve the Agent's output and shape strategy around its default stack.
Help manage dependencies both internal (public and private) and external, including being the face of the company when interfacing with open-source libraries (e.g., sponsorships, upstream contributions).