Backend Jobs - December 2025

Gr4vy (pronounced Gravy) is a 'no-code' cloud payments orchestration platform. Gr4vy’s mission is to become the platform-of-choice by which all retailers deploy payment infrastructure around the world. Founded by former PayPal fintech leaders, Gr4vy aims to d…

Nango (YC W23) is an open-source developer infrastructure for product integrations. We power the integrations of Replit, Semgrep, Motion, Vapi, Exa, and hundreds of other AI companies. Small but highly experienced team, hard technical challenges (scale + infr…

Sphinx Defense builds software to solve complex national security problems for the United States and its allies. Founded by engineers and technologists, the company is building a vehicle-agnostic communication infrastructure enabling satellite operators to se…

At BambooHR, we build the HR software millions of employees and organizations use to manage their people operations. We believe in giving teams autonomy, building with care, and delivering a great user experience, all while supporting a healthy, balanced work…

DuckDuckGo is hiring multiple fully-remote, full-time roles to support its mission to raise the standard of trust online. The company has scaled to over 300 people and continuously hires for software engineering and leadership positions. They mention improvem…

Ontic provides software that helps corporate and government security teams identify threats, assess risk, and respond faster to keep people and organizations safe. Seeking a passionate full stack engineer with deep expertise across frontend and backend system…