Full-Stack Software Engineer

San Francisco, CA · On-site (5 days/week) · Full-time

Compensation

$130,000–$240,000 + equity

### About the Company

We're a profitable, fast-growing data infrastructure platform serving the construction industry — one of the largest and least-digitized sectors in the world. We have 550+ paying customers on multi-year contracts, have been profitable and cash-flow positive for over two years, and are growing 10% month over month. Our product is a layered platform spanning data connectivity through fully automated financial workflows.

Founded 2021 · ~36 people · Industry: Property Tech / Construction data infrastructure

### The Role

We're hiring full-stack/backend engineers who love simplifying complex systems, unifying fragmented data, and building large-scale infrastructure. You'll be hands-on with core backend systems syncing financial data across fragmented legacy software in real time (work is roughly 80–90% backend). You'll own features end-to-end as an IC on a flat engineering team, talk directly to customers, and ship daily based on real feedback.

What you'll be doing

• Build and maintain the unified API layer connecting construction ERPs to modern software (legacy SQL, DLL, and API-based systems from 20–40 years ago)
• Ship core backend systems for ERP sync, AP automation, expense management, and vendor management, with frontend work on apps that dog-food the API
• Solve real-time data sync challenges, including web-socket implementations for systems lacking native webhooks
• Build scalable testing frameworks to catch edge cases across 1,000+ endpoints
• Engage directly with customers and ship features daily based on real feedback

Tech stack

Not explicitly specified. Referenced technologies: AWS (cloud, preferred), SQL/DLL/API-based legacy systems, web-sockets, high-volume API infrastructure.

### Requirements

* 1-5 years backend or full-stack engineering * CS degree from top 20-30 school *...