Lead Software Engineer, Core Platform

Moon; Glendale (CA); On-site; USD 185,000 - 225,000; Full time

Job summary

Moon is seeking a lead backend engineer to own auth and identity, multi-entity tenancy, the entitlements engine, payments and financing APIs, and cross-platform messaging services. You’ll shape the databases and infrastructure that power Moon’s core platform and mentor a small senior team.

You’ll enforce contract-first API design, versioning, and clean deprecation windows, uphold high reliability, and champion CI-enforced invariants.

Qualifications

• 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.

Responsibilities

• Lead the design and build of core services: identity, tenancy, entitlements, payments and financing APIs, messaging buses - and the 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 invariants.

Skills

Backend engineering

Distributed systems

API design

Payments integration

Technical leadership

Job description

Moon is an ambitious, independent vertical SaaS company incubated by Home Organizers, a market leader with decades of proven success in home organization through its subsidiaries, including Closet World, Closets by Design, and Brio Water Technology. Born inside one of the industry's largest operators — 6,000+ employees, hundreds of thousands of new customers served annually — Moon is built on a rare advantage: we build for the home improvement industry from within it.

Our mission is to reinvent the home improvement experience end to end. From AI-driven marketing and in-home 3D design to sales, service, and operations, Moon unifies the entire customer and business journey on a single platform — supercharged by Luna, our proprietary AI engine. Where most operators stitch together disconnected tools that don't understand the homeowner, we're building the unified operating system the industry has never had. We're a rapidly growing team of committed builders, driven to reimagine how this industry sells, designs, and delivers — and to power the next generation of operators, from single-location dealers to national franchise networks.

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.

About the role

• 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.

What you'll do

• 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 invariants.

Qualifications

• 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.

The pay range for this role is: 185,000 - 225,000 USD per year (Moon HQ)