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CTO / Founding Engineer (AI Purchasing Agent)

  • Remote
    • Warsaw, Mazowieckie, Poland
  • New startup

Intro

Location: Remote / EU
Stage: Pre-seed, PMF exploration
Product: AI Purchasing Agent - AI agent that searches, compares and makes online purchases

About the role

We are looking for someone who will take full responsibility for the vision, architecture and implementation of technology in a start-up building a new generation AI Purchasing Agent. This is a role for someone who wants to build a company from scratch, not just "lead a team" - combining strategy, hands-on engineering and product co-creation.

Your tasks

As a Co-Founder you will:

  • Design and develop the core architecture of AI Purchasing Agent (multi-agent workflows, crawling, integrations, API),

  • Build MVP and subsequent product iterations – from concept to production,

  • Create and optimise AI pipelines (LLM orchestration, RAG, vector search),

  • Integrate the platform with merchants, payment and logistics systems,

  • Be responsible for performance, inference costs and scalability,

  • Manage cloud infrastructure (deployments, monitoring, security),

  • Co-create the product strategy, roadmap and technological direction of the company.

Who we are looking for (Must-have)

  • At least 6+ years of proven track record in engineering positions (backend/full-stack/ML),

  • Deep, practical experience with LLMs, AI agents and RAG,

  • Expert knowledge of Python or Node.js,

  • Very good knowledge of Next.js, TypeScript, Postgres, Redis, AWS / Cloudflare,

  • Experience in scraping, crawling and e-commerce integrations,

  • Ability to independently build a production-ready end-to-end MVP,

  • Founder mindset – ownership, rapid iterations, decision-making in uncertainty.

Nice to have

  • Proven track record in building marketplaces, consumer apps or in the e-commerce industry,

  • Own projects (AI, agents, open-source),

  • Work in pre-PMF startups or as a technical founder.

What we offer

  • The Co-Founder role with real influence on strategy and equity,

  • Building a product from scratch in the area of AI × Commerce,

  • Full decision-making autonomy on the technology side,

  • The opportunity to scale the solution globally,

  • Work in a small, ambitious team focused on rapid execution.

  • Support from an experienced startup studio with over 20 years of experience,

  • Remuneration - at least PLN 17,000 net B2B + VAT,

  • Variable bonus depending on results,

  • A package of shares in the co-created startup,

  • Access to exclusive knowledge and cooperation with outstanding experts within our organisation and capital group.

Recruitment process

  1. Interview with HR

  2. Interview with the Founder

  3. Technical system design + agent workflows

  4. Mini-task 2–4 hours (architecture + quick prototype)

  5. Interview with the investor

  6. Decision

  7. Offer (salary + equity)

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