About the role

Senior Product Engineer at Moxie building payments and billing infrastructure for med sp...

Responsibilities

Own and deliver medium-to-large FinOps projects end-to-end — from design through production — as a hands-on senior IC.
Build deep expertise in FinOps systems and business context (Stripe, LayerFi, Cherry, and related billing/payments workflows), becoming a trusted technical resource for the team.
Participate actively in Moxie's Engineering Architecture Process, contributing to and influencing technical decisions within your domain.
Own at least one team- or domain-level non-project initiative — such as testing standards, documentation, or code review practices — that raises engineering quality beyond your own projects.
Mentor IC1–IC2 engineers and act as a culture carrier for strong engineering practices, growing toward Staff (IC-4) scope over time.

Strong backend engineering experience, including schema/API design, data modeling, and async processing (Python/Django experience a plus).
Deep PostgreSQL fluency — query optimization, schema design, migrations, and data-integrity patterns.
Experience building and hardening third-party integrations, ideally in payments or financial systems, with strong attention to failure handling and idempotency.
A track record of owning medium-to-large, sometimes ambiguous projects end-to-end as a senior IC, including tradeoff decisions and cross-functional coordination.
Comfort influencing architecture and technical direction beyond your own immediate project scope.
Experience mentoring engineers and raising the technical bar for a team.
Excitement for high-ownership, early-stage environments where decisions matter and aren't buried under bureaucracy.

Above all, we're in this to empower small business owners to own and grow their businesses. Med spa providers depend on financial systems that just work — this role gives you direct ownership over that reliability.
We have much left to build. Given the market feedback we're seeing and our team's experience, we believe we're writing the early chapters of a real success story — and this role gets to help write the financial-systems chapter of it.