Product Engineer (Full Stack)

About the Position

Product Engineer (Full Stack)

We are seeking a Middle or Senior Full Stack Product Engineer to join our R&D Engineering team in Warsaw, Poland, focusing on building AI-native products.

About Shelf

The enterprise is going agentic and we are creating a unique operating system for an automated future.

Most AI agents break the moment they hit real business complexity. That’s why we built a platform that models a company's policies, workflows, and operational logic into an AI Data Model. Shelf enables AI Agents to reliably reason and deliver precise and reliable outcomes at scale.

We already have what most AI startups are still trying to earn: Enterprise customers such as Glovo, Nespresso, and HelloFresh, real production data, and tens of thousands of users. Customers trust us with operational knowledge: Our platform is highly reliable and secure with SOC2, HIPAA-ready security practices, and mature integrations in place.

Responsibilities

• Build and ship user-facing product features across frontend and backend boundaries
• Turn rough product goals into practical solutions with good scope, sensible trade-offs, and strong execution
• Work comfortably in UI, application logic, APIs, and data flows rather than stopping at team boundaries
• Partner closely with product and design while still being able to move when the spec is incomplete
• Improve usability, clarity, performance, and reliability, not just feature completeness
• Instrument what you ship so we can learn from production behavior and iterate quickly
• Use AI tools daily to move faster and help improve internal workflows, tooling, and engineering leverage
• Keep the bar high on code quality, testing, and ownership after launch

Requirements

• Strong senior-level experience shipping production web products
• Strong frontend ability with React and TypeScript or an equivalent modern web stack
• Real backend ability. You do not need to be backend-only, but you can design and ship APIs, backend logic, and data flows when the product needs it
• Strong product sense. You notice awkward flows, weak defaults, and unnecessary complexity, and you improve them
• Good judgment about scope, iteration, and technical trade-offs
• A security-conscious approach to engineering: you handle sensitive data carefully and think about the security implications of what you ship
• Clear communication and comfort working across engineering, product, and design
• AI-native working style. You already use AI tools as part of daily implementation and problem solving, and you are excited to improve how engineering work gets done

Nice to Have

• Experience with AI-powered product experiences such as chat, search, recommendations, workflows, or agent-like systems
• Experience with Python, Node.js, or both on the backend
• Experience owning product areas with limited oversight
• Strong feel for performance, accessibility, and production quality in complex web applications

We Offer

• Competitive salary
• Full-time employment
• On-site work in Warsaw, Poland
• Opportunity to work in a high-growth, innovative company
• Collaborative and dynamic team environment

About the Company

Shelf is a leading company in the AI age, recognized by Gartner as a Cool Vendor. Our platform is trusted by enterprise customers such as Glovo, Nespresso, and HelloFresh. We are committed to building a reliable and secure operating system for an automated future.

Our Values:

• Quality: Focus on world-class Quality in all things.
• Momentum: Continuously create movement and progress.
• Accountability: Take real responsibility and follow through on commitments.
• Hard Work: Intense effort and real ownership in our mission.
• Learning Agility: Commit to learning every day and embrace growth.
• Adapt and Thrive: Overcome challenges and thrive in constant change.
• Win Together: Work as a team to achieve shared goals.