> Markdown version of [/jobs/ext/4629379-senior-platform-engineer](https://www.wearedevelopers.com/jobs/ext/4629379-senior-platform-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Platform Engineer - **Company:** HRUBY RESTAURANT OPERATIONS, LLC - **Location:** San Francisco, CA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** TypeScript, Backend, Agentic-AI, Cloudflare - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/28_25303_83d222a6a22b71cd0afbf37349675a72 ## About the Role * Production experience building and operating stateful backend systems - work that outlasts the initial request * Professional experience writing production backend code in TypeScript * Based in the San Francisco Bay Area, or willing to relocate, * Experience building an agent runtime or agent harness * Production experience with Cloudflare Workers, Durable Objects, or other actor-based runtimes * Experience deploying long-running processes that persist across code releases * Background at next-gen AI/agentic companies or design-first product orgs ## Description You'll build and own the core execution engine (agent runtime) that manages session state, tool calls, and long-running processes - the backbone that lets AI agents operate reliably over extended sessions.