Mid-Senior Full Stack Engineer (Machine Learning Company)

Backend EngineerDesign, build and maintain backend services in Elixir (Phoenix/OTP) and/or Rust for Oxen.ai's data and model platform. Ship full features end to end: APIs, data models, background jobs and the product UI that sits on top of them. Build reliable, concurrent systems for model inference, large-scale dataset workflows and fine-tuning pipelines. Integrate the 200+ models we serve and the cloud storage systems behind our repositories. Share ownership of customer support with the rest of the engineering team: answer questions, debug issues alongside customers, and turn what you learn into product fixes. Work closely with product, ML and design to turn customer feedback into shipped improvements quickly. Improve performance, observability and reliability across the stack. Contribute to open-source projects and community engagement around Oxen.ai.What You Have (Skills & Experience): 4+ years of professional software engineering experience, including significant production work in Elixir (or Rust, with real interest in Elixir). A strong grasp of OTP, concurrency and fault tolerance, or comparable depth in Rust's async and ownership model.

Experience building and shipping web applications across the stack, from database schema to user interface. Solid API design instincts and comfort with relational databases (Postgres or similar). A generalist mindset: you're happy to pick up a new language, tool or part of the codebase when the problem calls for it. Comfort working directly with customers: you communicate clearly, stay patient when someone is blocked, and can explain technical problems and fixes to people of any background. Strong communication skills and a collaborative mindset suited to early-stage teams.