backend infrastructure Jobs - April 2026

Bustem helps e-commerce brands find and shut down copycats, counterfeiters, and unauthorized sellers. In <12 months the company reached $3M+ ARR, 150+ brands, profitable with no outside capital. Hiring a Founding Engineer to build core systems for detection a…

Promptless (YC) builds AI agents that automatically update customer-facing documentation. YC-backed seed-stage startup. Two founding roles in San Francisco (onsite): Founding Docs Practice Lead — own the documentation practice, onboard customers, build method…

Squint is the leading manufacturing intelligence platform. They're leveraging AI, spatial, and hardware capabilities to accelerate human potential and transform manufacturing across Food and Beverage, Automotive, and Consumer Packaged Goods. They focus on aug…