Staff Backend Engineer

PeakCommerce's platform depends on getting billing data right — reading catalogs, creating and amending subscriptions, and reconciling transactions across Stripe, Zuora, Maxio, and Salesforce Revenue Cloud. As a Staff Backend Engineer, you'll lead the design of the core services and integration layer that make those transactions deterministic and reliable, including the run-time execution behind our agentic commerce surface.

Lead the architecture of our integration and transaction services, where correctness and consistency across billing systems are non-negotiable.

Design how PeakCommerce models catalogs, rate plans, amendments, and usage across multiple billing providers behind a coherent internal interface.

Set technical direction and standards for backend engineering, and mentor other engineers through design reviews and pairing.

Build the run-time execution layer that turns an approved transaction — including an agent's — into a billed, reconcilable record.

Make pragmatic trade-offs around reliability, observability, and delivery speed, and document the decisions behind them.

8+ years of backend engineering experience, including designing systems where data correctness and integration reliability are critical.

Deep experience integrating with third-party APIs and webhooks, and handling the failure modes that come with them.

A track record of leading technical design across teams and raising the engineering bar around you.

Strong communication — you can align engineers and stakeholders around a direction and the reasoning behind it.

Bonus: experience with billing, payments, or financial systems, or with subscription platforms like Zuora, Stripe, or Maxio.

Tell us a bit about yourself and why this role is a fit. We read every application and will get back to you.