AI Jobs - December 2025

Stellar is building an AI voice agent platform for customer support and is hiring founding software engineers to scale the platform globally. Responsibilities include building performant APIs and backend services in Go and TypeScript (Node.js), developing fro…

E2B is a fast growing Series A startup with 7-figure revenue. We've raised over $32M in total since our funding in 2023 and are supported by investors like Insight Partners. Our customers include Perplexity, Hugging Face, Manus, and Groq. We're building the n…

Viam is an open source robotics and AI developer platform aiming to bring software engineering maturity to robotics and automation. The company (~100 people, ~70 engineers) is hiring for Staff and Senior Software Engineer roles on infrastructure/backend teams…

Sphere Semi is applying AI techniques to automate the design of analog and mixed signal chips. Our techniques have been able to achieve state of the art PPA (power performance area) with relatively modest compute. We’re scaling up and that means we need to re…

Radar is a geo-location developer platform handling 1B+ API calls per day. Main languages are Rust and TypeScript, with additional use of Python, Scala, and Terraform. Based in NYC (HQ in Union Square) and remote-friendly (US). Projects include HorizonDB (a g…

At Float, we're building capital markets infrastructure. Our AI-native platform is tackling decades-old inefficiencies, creating technology that enables financial institutions to interact seamlessly and automate intelligently. Based in SoHo, New York and back…