Senior Software Engineer, Infrastructure
Senior Infrastructure Engineer responsible for building and operating platform primitives including Kubernetes, CI/CD, observability, and developer tooling at a high-growth AI and data platform company.
Senior DevEx Engineer
Steward Replit's TypeScript monorepo, Go services, and developer tooling to accelerate engineering velocity and reduce friction. Partner with AI team to enhance agent-generated code, requiring senior-level expertise in build systems and large-scale codebases.
180k – 250kFoster City, CADevOps / SREHybrid
About the role
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).
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.
Skills
TypeScriptGoNixVitewebpackEsbuildGraphQLProtocol BuffersgRPCOpenapiEslintPrettierMonorepoCI/CD
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