Lead Software Engineer, Core Platform

Role Overview

You will be the technical lead of Moon's core platform: auth and identity, multi-entity tenancy, the entitlements engine, payments and financing APIs, cross-platform communication services, and the databases everything runs on. Every module team builds on the foundation you keep solid.

• You will join a small, senior platform team as its lead engineer, working with the Senior EM and the Principal Engineer on the contracts, reliability, and data architecture that let small teams ship continuously without colliding.

• Lead the design and build of core services: identity, tenancy, entitlements, payments and financing APIs, messaging buses - and the common shared services every module consumes: email, SMS, voice and communication services, and the client database.
• Own database architecture and performance; uphold demanding reliability commitments.
• Enforce contract-first discipline: versioned APIs, clean deprecation windows, no surprise breaking changes.
• Enforce engineering standards via code review across the application, including proper use of the design system via Storybook.
• Mentor the team's engineers; encode critical business rules as CI-enforced in variants.

• 7+ years of backend engineering with distributed systems in production.
• Deep database and API design experience; payments or fintech integration experience a strong plus.
• Has been the technical lead others calibrate against.
• Pragmatic architecture instincts; ships.