Principal Engineer (Core Systems)

Build the verification layer for physical commerce, source to recycle.

You will:

• Architect the core from first principles
• Model the real supply chain
• Make the data impossible to fake
• Ship it. Debug it in production. Carry the pager.
• Set the engineering bar.

You have:

• Built and run a complex production system yourself
• Deep distributed systems, PostgreSQL, security and cryptography
• Experience with complex real-world systems; supply chain, traceability, identity or regulated data is a strong advantage.

Scope

Scope: identity, provenance, IoT, AI agents, ERP, multi-cloud. One system, source to recycle.
TypeScript and PostgreSQL are the core. Everything else earns its place with evidence.

Apply

[email protected]
Subject: Principal Engineer

Send: CV / GitHub, notice period, the hardest system you have built (what did YOU do?), and one hard technical decision and why.

No cover letter. Show the system.