Senior Product Engineer (Treasury, Elixir)

Join our team as a Senior Product Engineer specializing in Treasury and Elixir. In this role, you will build and scale the core services behind our treasury platform, which handles billions in transaction volume. You will work directly with the founders on product direction and own features end-to-end, from product framing to front-end development. This is a remote position with a focus on work-life balance, health, and community involvement.

• Design, build, and operate Elixir/Phoenix services, including APIs, data pipelines, and async processing.
• Own features end-to-end, from product framing through the front-end needed to ship, ensuring reliability and operational rigor.
• Collaborate directly with founders on product direction, and work alongside a small, senior team across treasury, product, and data/AI.
• Clear communicator across technical and non-technical teams; fluent English
• Strong PostgreSQL; hands-on with cloud infrastructure, Kubernetes, and CI/CD
• Ships features end-to-end — product framing through front-end — without a handoff
• 5+ years of professional experience, with strong production Elixir and Phoenix
• Solid grounding in distributed systems, concurrency, and async processing
• Demonstrated, fluent use of AI coding tools (esp. Claude Code) in real day-to-day work
• US-based and able to work EST hours — you'll be embedded with an EST-based treasury team
• Python or other backend languages
• Payments, treasury, or fintech domain experience
• Event-driven architectures, message queues, workflow orchestration
• Exposure to AI/ML-powered products