Full Stack Engineer (Warsaw)

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"