AI Product Engineer · Fig. 01

Building AI products with ownership.

I shape AI systems from intent to delivery. At Heineken I owned the product direction for three production AI systems influencing €3.2B in spend. Now building independently with a focus on agentic workflows.

€3.2B
spend steered
17
markets live
10+ yrs
in Asia
Tomasz Czarnecki
Tomasz CzarneckiAI Product Eng.
Selected Work · 03 Systems

AI Case Studies

Heineken · Global Analytics & AI Hub
Mercury · 01

Allocation AI

Allocation AI
€600M targeted yearly uplift by 2029

Led the product direction for a Bayesian allocation system that set annual promo budgets across markets, brands, and channels — turning €3.2B in spend decisions from intuition-driven to data-driven.

Revenue Mgmt · 02

Promo Advisor

Promo Advisor
17 markets · 30–40% less planning time

Owned product strategy and UX for an AI-driven promo platform deployed across 17 markets. Shipped three modules — Diagnostics, Scenario Simulator, Calendar Optimizer — moving teams from manual to data-informed planning.

Media Execution · 03

Smart Flighting

Smart Flighting
+1.5% net revenue from timing alone

Led discovery and interface design for a media flighting simulator using AI response models — moving teams from Excel into an interactive platform, delivering an estimated +1.5% net revenue lift.

Testimonial
“Always highly motivated to improve his process.
Such a rare quality.”
Ma Yansong signature
Ma Yansong
Founder & Principal, MAD Architects
Tomasz Czarnecki
Tomasz Czarnecki
Polish · English C2 · Mandarin B2
Philosophy

Non-deterministic systems have been my material for ten years.

I spent a decade building generative and optimization systems — genetic algorithms, evolutionary solvers, and large-scale parametric work at MAD Architects and AREP. The same mental model of handling uncertainty, constraints, and trade-offs now applies directly to LLM agents and agentic workflows.

At Heineken, I applied this thinking at scale: shaping the product layer for AI systems that influenced €3.2B in commercial spend. I approach AI products as a builder who owns outcomes — from discovery to shipped systems — not just as a designer of interfaces.

10+ yrs
in Asia
€3.2B
spend steered by AI
3 products
in production, 17 markets
Trajectory · 2007 → Now

The Long Way Here

Computer science, architecture and adventure — converging on AI.
01 · 2007

Computer Science

Started in IT and picked up the skill that underwrites everything since — algorithmic thinking — before a drawing exam pulled me toward architecture.

02 · 2011

Istanbul & Parametric Design

An exchange year under prof. Ozan Önder Özener. Buildings as programs — geometry described mathematically in C#. It became my thesis and my edge.

03 · 2015

A One-Way Ticket to Beijing

Borrowed money for a one-way ticket and joined MAD Architects, on the team behind the Harbin Opera House. Perfection as countless iterations.

04 · 2017

Leading in Guizhou

Project leader at a local institute, running a team of ten Mandarin-only designers. Finally close to real users — and asking why so few decisions were data-based.

05 · 2020

Back to the Roots — UX

Twelve years after first meeting the word usability, it clicked. The field that joined all three threads: computer science, design, and making lives simpler.

06 · Now

AI Product Engineering

Five years shipping production ML at Heineken, now building independently. Non-deterministic, rule-based systems were always the material — LLM agents are the new medium.

Tomasz Czarnecki with the MAD Architects team
Field Notes · Asia2015 → 2024
Get in touch

If this resonates, let's chat.

I’m interested in conversations about building AI products with real ownership. If you’re working on something meaningful, feel free to reach out.

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