Principal Engineer

Principal Full Stack Engineer — Founding Team

Chicago, IL (Hybrid)

We’re hiring a Principal Full Stack Engineer to build the core Stock platform from the ground up. This is a true 0 → 1 role. You’ll own the architecture, stack, design, and development of the platform that powers how inventory is listed, matched, moved, and tracked across brands, warehouses, and nonprofits. You won’t be maintaining legacy systems, you’ll be defining the system.

• Architect and build the Stock platform end-to-end (frontend, backend, infrastructure)
• Design systems that handle inventory workflows, logistics coordination, and real-world constraints
• Define our AI strategy both internally and externally
• Partner directly with the founder to translate operations into scalable software
• Move quickly from idea → build → deploy → iterate
• Hire and mentor team members as we grow
• Establish engineering best practices as we scale

• 7+ years of full stack experience (startup or high-ownership environments preferred)
• Proven track record building products from scratch (not just maintaining). Must enjoy building! You are the initial
• Strong product instincts. You think in workflows, not just code
• Ability to operate with ambiguity and move fast without perfect information
• Deep care for quality, speed, and impact

• Marketplaces
• Logistics / supply chain
• High-growth startup environments

• Own a platform from day one — not a feature, the entire system
• Work directly with the founder on core company-building decisions
• Work directly with external stakeholders — you will not be handed requirements, you need to create the requirements
• Solve a massive, real-world problem at the intersection of logistics and sustainability
• Build something that actually matters — economically and environmentally

• The operating system for inventory disposition — not just donation, but the full decision engine across donation, liquidation, resale, and recycling
• Embedded within every major 3PL and commerce platform — a native extension of fulfillment workflows, as seamless as creating an order
• A real-time marketplace connecting brands, nonprofits, and alternative buyers with intelligent matching and logistics orchestration
• A system of record for ESG and financial impact — tracking tax benefits, sustainability metrics, and operational savings in one place
• A global network capable of redistributing billions of units of excess inventory annually

• Base Salary: $140,000 - $150,000 per year
• Equity: 3% ownership in Stock, with standard vesting (4-year vest with a 1-year cliff)
• Benefits: Medical, dental, and vision coverage (comprehensive)