Senior Devex Engineer

Replit Replit · Enterprise · Foster City, CA · Hybrid · Engineering

Senior DevEx Engineer at Replit, focusing on improving developer experience and tooling for an agentic software creation platform. The role involves stewarding codebases, tooling, and developer workflows, and partnering with the AI team to enhance the internal AI platform which generates over 60% of merged PRs.

What you'd actually do

  1. Maintain and evolve our codebase structure — a complex TypeScript monorepo, Go services, npm packages, and internal Agentic tooling.
  2. Own the build and test pipelines and optimize them to minimize build times and improve developer iteration speed.
  3. Drive code generation and type-safe interfaces across service boundaries (e.g., GraphQL, Protocol Buffers, gRPC, OpenAPI).
  4. 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.
  5. 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.

Skills

Required

  • TypeScript
  • Go
  • Nix
  • modern build systems
  • toolchains
  • linters
  • formatters
  • testing frameworks
  • code generation tools
  • monorepos
  • large-scale codebases

Nice to have

  • self-service developer platforms
  • AI-native development workflows
  • Open-source leadership
  • community contributions
  • tech lead experience

What the JD emphasized

  • agentic software creation platform
  • internal AI platform
  • Agent's output
  • Agent's default stack
  • early hire

Other signals

  • improving the Agent's output
  • shape strategy around the Agent's default stack
  • internal AI platform