Developer Relations Engineer
About Vast.ai
Vast.ai runs one of the largest GPU marketplaces in the world. Over 20,000 GPUs, from RTX 4090s up to B300s, rented by more than 25,000 customers a month who train, fine-tune, and serve AI models on them. We are profitable, the team is flat, and we ship quickly. Your application goes straight to the hiring team.
The role
This is an engineering job that happens in public. You will be our heaviest user.
Most of your week goes to renting GPUs on Vast and building things on them. Serving open source models with vLLM and SGLang. Fine-tuning. Running ComfyUI pipelines. Keeping live inference endpoints up, including token endpoints on markets like OpenRouter. Writing the example repos, Docker templates, and benchmarks that other developers copy.
The rest of your week is spent showing your work. Short videos, technical write-ups, answers in Discord and on Reddit, hackathons. You are not building the Vast product. You are using it harder than any of our customers, in the open, and reporting back everything that breaks.
If you want a content calendar and a campaign plan, this is the wrong job. If you already spin up GPUs on weekends because you want to see whether the new model actually runs, keep reading.
