Holistic Product Engineer

Product engineer who ships web systems from idea to execution. I operate at product level — passionate, ambitious, fast-paced, and a public speaker.

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About

I'm an end-to-end product engineer with 4.5+ years owning features from concept through UX, frontend, backend, and delivery.

What I bring to the table

  • 01

    End-to-end ownership. I take a feature across frontend, backend, and UX and ship it. Proven on flagship Cookie3 apps serving hundreds of thousands.

  • 02

    Leads, doesn't wait. I partner directly with product, design, and exec, turn user feedback into product calls, and speak on it at conferences.

  • 03

    Fast without breaking. I ship at startup pace on an AI-accelerated, Claude Code-driven workflow, without trading away quality.

  • 04

    Thinks in outcomes. Not a ticket-taker. I reason in users, metrics, and business impact, from system-prompt design to dashboard UX at scale.

  • 05

    Compounds every year. Shipping production apps since 17. I treat the craft as a long game and get better on purpose.

Engineering

  • TypeScript
  • Next.js
  • React Native
  • Node.js
  • CSS
  • Git
  • API Development & Integrations
  • Databases
  • CI/CD

AI / Agents

  • LLM Integrations
  • Agentic Workflows
  • LLMs API

Product & Craft

  • UX
  • Product Thinking
  • Project Ownership
  • Startup Agility
  • Public Speaking

WHO I'M FOR

I do my best work early, before the product is figured out.

I'm not for hire to trace a finished spec. I take real product problems with founders who move fast, and own them end to end across the stack.

A fit when

  • Early stage. Idea to MVP, or a product still being shaped.
  • Full ownership. One person owns the outcome across frontend, backend, and UX.
  • AI-heavy. Agents, LLM integrations, and data-dense product.
  • High trust, high speed. The team ships fast and gives people real autonomy.
Ownership.End-to-end.Holistic approach.

Experience

  1. Cookie307/2024 - Present

    Fullstack Developer · Product Engineer

    Lead flagship apps across the Cookie3 product suite, owning frontend, backend, and UX end-to-end.

    • -Shipped an AI chat agent on the Claude API - tool use, context management, multi-step workflows - letting users query complex analytics conversationally.
    • -Architected scalable dashboards serving hundreds of thousands of users, with on-chain and external API integrations.
    • -Partnered with product, design, and marketing leads to turn strategy into shipped features.
  2. Hashup06/2023 - 07/2024

    Fullstack Crypto Developer

    Built Web3 applications with smart-contract integrations and scalable backend services.

    • -Worked directly with international clients, owning features from requirements through production.
  3. codixe.co02/2022 - 07/2023

    Fullstack Developer

    Built e-commerce for international clients, including catalogs of several thousand products.

    • -Delivered Headless Shopify solutions from frontend through backend and external integrations.
  4. Strona Agency10/2021 - 01/2022

    Frontend Developer

    Built Next.js sites integrated with headless CMS for agency clients.

    • -Multi-language pages with localization tailored to client requirements.

Speaking

  1. Cashfiam Katowice11/2025 · Katowice

    On UX design and why product teams overlook it

    Practical insights from my work at Cookie3 on spotting common UX pitfalls and building interfaces that genuinely serve users.

  2. Superteam Solana Meetup07/2025 · Katowice

    Junior developers entering IT & Web3

    Questioning whether early-career barriers are as significant as commonly portrayed, drawing on my own path through the Solana ecosystem.

Latest Products

+ 17 commercial products shipped end to end across four companies.

Location

Hybrid around Katowice - or fully remote, globally.

Based near Katowice, Poland. Open to hybrid work in the region and fully remote roles anywhere.

Grinding..

Contact

Let's build something.

Have a product to ship, a team to strengthen, or just want to talk? The fastest way to reach me is email or Telegram.