Full Stack Engineer (Warsaw)

About the role

THE MISSION

America's industrial base runs on systems built in the 1980s.

Billions of dollars in critical components (F-35 parts, industrial assemblies, electronics, bolts, and hoses) still move through email threads, excel sheets, and disconnected ERPs.

We're replacing that with an AI-native platform that makes defense, aerospace, and industrial supply-chain operations nearly autonomous. Faster quoting. Faster procurement. Full visibility. Real operational intelligence for the companies our nation depends on.

QUICK FACTS

- YC W25 company. Top 5% growth in batch

- Raised $10M+ on a hyper-growth trajectory.

- Backed by Paul Graham, SV Angel, Pear VC, and CRV

- Team of 17 Co-live in our Warsaw & SF Hacker Houses

- 7 figure ARR transacting ~50M a week through our system

THE JOB

The Senior Software Engineer will work closely with other engineers on the platform team and customer-facing forward deployed teams to design, build, and maintain robust full systems that integrate with complex legacy environments and support high-value, high-impact supply chain systems.

- Backend-leaning fullstack role using Svelt/Typescript/Postgres.

- Design, develop, and maintain full-stack application functionality, including:

- Frontend UI

- Backend services and APIs

- AI workflows and validation systems

- Database schemas and data models

- Organize, keep track of, and deliver multiple projects in parallel

WHAT WE’RE LOOKING FOR

- Absolute grinder. Interested in co-living (though not required).

- Comfortable with ambiguity and rapid change.

- Track record of shipping fast.

- Experience architecting systems independently

- Motivated by taking an unknown problem, sinking your teeth in, and coming up with a plan of attack.

- Experience in shipping projects and products. Be ready to show us at least one full-stack project (GitHub repo / web app / Loom demo video).

- Proficiency in TypeScript, JavaScript, and at least one frontend library (React, Svelte, Next etc).

- Knowledge of SQL databases, preferably Postgres.

- Proficiency in writing, optimizing, and troubleshooting complex SQL queries for data extraction, transformation, and integration.

- Strong understanding of software engineering best practices, including version control, testing, and documentation

- Ability to work effectively in fast-paced, high-accountability environments

- Low ego, curiosity, and intellectual honesty - focused on outcomes, not “being right"