Lead Developer - Hands-on, Pair-Coding (AI Purchasing Agent) - Remote

Overview

We are looking for a Lead Developer who will work closely with the CTO in a pair-coding model and actually build the core of the product from scratch.

In Short

• Work in pair-coding with the CTO on key elements of the system.
• Implement AI agents, decision-making workflows and integrations.
• Build the backend and API for the AI Purchasing Agent.
• Co-create the MVP architecture pragmatically.
• Optimise performance, stability and costs.
• Ensure code readability and quality at a fast pace of development.
• Participate in technical decisions that directly affect the product.
• Design and develop the core architecture of the AI Purchasing Agent.

Requirements

• At least 5+ years of experience as a backend or full-stack engineer.
• Very good knowledge of Python or Node.js.
• Practical experience with LLMs, prompting, AI model integration.
• Experience in building products from scratch (0 → MVP).
• Willingness to engage in intensive pair coding.
• Knowledge of React / Next.js.
• Startup mindset - ownership, speed, responsibility.

Benefits

• Direct cooperation with the CTO as a Core Engineering Partner.
• Real impact on the architecture and shape of the product.
• Very fast learning pace (AI × commerce × startup).
• Opportunity for promotion to Founding Engineer / Tech Lead.
• Work on a product built from scratch.
• Work in a small, ambitious team focused on rapid execution.
• Support from an experienced startup studio.
• Salary - PLN 14,000 - PLN 16,000 net B2B + VAT.
• A package of shares in the co-created startup.