Posted Jul 14, 2026

[Remote] Staff Backend Engineer (Infrastructure) — Early-Stage AI Infra Startup

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Note: The job is a remote job and is open to candidates in USA. William and William Recruiting is partnering with a well-funded, early-stage AI infrastructure startup that builds the testing and observability layer for AI systems. The role involves owning the infrastructure to scale the platform significantly and transitioning it into a database company, working closely with the CEO and a small engineering team. Responsibilities • You will own the infrastructure that scales the platform 10–100x over the next several months • The system handles roughly 1,000 concurrent jobs for most customers today, one customer already needs 100K, and the near-term target is a million, so the platform must climb two orders of magnitude in a matter of months • You will scale the existing system first, and then you will prototype and build the company's own indexing engine and purpose-built data layer, which becomes the core technical moat • You will report directly to the CEO on an eight-person team that ships to production multiple times a day • The ramp follows a crawl-walk-run arc • In month one you will audit the system end-to-end and propose solutions, in month three you will prototype the internal indexing layer, and by month six you will have a working data layer that the platform builds on top of Skills • 5+ years of strong production backend in Python or TypeScript/Node • You've owned real-time or near-real-time systems at scale: queues, streaming, low-latency APIs • You've built or core-contributed to a real data system (Redis, Kafka, Postgres, ClickHouse, Temporal, a vector DB, or similar). This is the differentiator, not a nice-to-have • You ship end-to-end: schema design, API, observability, on-call • You're effective in a small team with no PM hand-holding and define your own scope • AI-native in your workflow (Claude Code, Cursor, Codex) • Bonus: you'd build a database for fun on a weekend, and you've got one specific area you're exceptional at; they build the role around the spike Benefits • Visa sponsorship available • 100% covered health, vision, and dental • All AI tools and tokens fully paid • Quarterly offsites Company Overview • We Build the Teams That Build High-Growth Organizations We don't just fill seats. It was founded in 2025, and is headquartered in Dallas, Texas, US, with a workforce of 2-10 employees. Its website is .