Senior Product Engineer, Treasury (Elixir) (Fully Remote)

Undisclosed Partner Company; United States; Remote; USD 160,000 - 260,000; Full time

Job summary

Undisclosed Partner Company in the United States is building an AI-powered finance platform for treasury and payments with a small, senior team. You will own product features end-to-end and shape architecture with the founders, contributing to a hands-on, collaborative, remote-first culture.

Design and operate Elixir/Phoenix services for high-volume financial transactions; build infrastructure for AI-driven spending workflows; ensure reliability, observability, and scalable architectures that

Qualifications

• 5+ years in software engineering with Elixir and Phoenix.
• Experience with distributed systems, PostgreSQL, Kubernetes, and CI/CD.
• Daily use of AI coding tools, especially Claude Code.

Responsibilities

• Design and operate Elixir/Phoenix services for high-volume financial transactions.
• Build infrastructure for AI-driven spending workflows and ensure reliability.

Skills

Elixir

Phoenix

Distributed systems

PostgreSQL

Kubernetes

CI/CD

Claude Code

Job description

• Join a small, senior team building an AI-powered finance platform for treasury and payments.
• Own product features end-to-end and shape architecture with founders.

Key Responsibilities:

• Design and operate Elixir/Phoenix services for high-volume financial transactions.
• Build infrastructure for AI-driven spending workflows and ensure reliability.

Requirements:

• 5+ years in software engineering with strong Elixir and Phoenix skills.
• Experience with distributed systems, PostgreSQL, Kubernetes, and CI/CD.
• Daily use of AI coding tools, especially Claude Code.

Undisclosed Partner Company

They are building an AI-powered finance platform that transforms how enterprises manage payments, treasury, and financial operations. The company has a small, senior team with a collaborative, remote-first culture focused on end-to-end ownership and innovation.