Platform Engineer
Harper, San Francisco
The role
You're an infrastructure-focused engineer with depth across databases, AWS, networking, observability, SRE, CI/CD, and AI tooling. You build the systems and tooling the rest of engineering depends on—optimized for performance, reliability, and developer velocity.
You work directly with founders and alongside the product engineers who ship features on top of what you build. You see where things break at scale, design the fix, and ship it before it becomes a fire. When something goes wrong at 2 AM, you're the one who gets paged—and you'd rather build the system that prevents the page than accept it as inevitable.
We are hiring platform engineers across all levels, which we determine during the interview process.
What you will do
- Own core infrastructure – Databases, AWS services, networking, CI/CD; the systems every engineer depends on
- Build for scale – Thousands of concurrent AI operations, sub-second response times, cost-effective under load