Since 1996

Architects of E-commerce Growth.

We don’t just drive traffic; we engineer revenue. Combining 25+ years of experience with cutting-edge AI technology to scale businesses from local players to global powerhouses.

Generated €250M+ Revenue Ex-Google & Zalando Expertise AI & MLOps Pioneers Global Strategy

More Than an Agency.
A Strategic Partner.

In the world of e-commerce, traffic is vanity, but profit is sanity. We know that marketing chaos, wasted budgets, and a lack of strategy are the biggest brakes on your growth.

At Westom/YTECS, we reject the “cookie-cutter” approach. We operate as an extension of your board, implementing the “E-commerce Growth Engine”—a proprietary methodology built on data, automation, and 20 years of international experience.

01. DIAGNOSIS

Deep forensic audit of your tech and data.

02. OPTIMIZATION

Fixing the leaks and automating flows.

03. SCALING

Aggressive growth via new markets & channels.

Tomasz Węsierski - E-commerce Strategist
“I love the moment when data turns into a story, and that story turns into results.”
The Strategist

Tomasz Węsierski

E-commerce Veteran | AI Engineer | MBA

Tomasz’s journey began in 1996, at the dawn of the internet. Today, he is a recognized authority in digital transformation, combining business strategy with deep technical engineering.

Unlike theorists, Tomasz brings battle-tested strategies from the front lines. He has managed 250+ person teams and scaled revenue from €50M to €250M for global capital groups.

Former Roles:
  • • Head of E-commerce, Expondo
  • • COO, Wakacje.pl
  • • CEO, Tapiso
Key Collaborations:
  • • Google (Mountain View)
  • • Zalando (Berlin)
  • • Apple Resellers

Why Westom?

01. Practical Experience

We don’t sell theory. We implement the exact mechanisms that allowed us to scale companies to €250M revenue. We’ve been there, done that.

02. Full Tech Stack

We are fearless with technology. From Magento, Shopware, and PrestaShop to complex PIM, ERP, and Salesforce integrations.

03. AI Innovation

We are already where competitors hope to be. We deploy Dynamic Pricing, Demand Prediction models, and real-time AI personalization.

04. Knowledge Sharing

Through the Westom Academy, we train the next generation of pros. We believe in open knowledge and constant evolution.

Global Minds. Local Focus.

We are a multinational team of “positive innovators” – developers, marketers, and strategists who combine creativity with data discipline.

Google
Certified Partner
Allegro
Ads Partner
Meta
Business Partner
ESMT Berlin
MBA Alumni

Common Questions

How does a Polish agency support US clients?

Seamlessly. We operate on a hybrid schedule that ensures a 6-hour overlap with US Eastern Standard Time. You get Silicon Valley-quality code and strategy at optimized European rates.

Is Tomasz involved in every project?

Tomasz acts as the Chief Strategist. He reviews the architectural roadmap and growth strategy for all key accounts, while our specialized teams handle daily execution and development.

What industries do you specialize in?

Our core expertise lies in E-commerce (D2C & B2B), SaaS, and Manufacturing. We excel where there is high complexity in data, logistics, or integration needs.

Do you offer English support?

Yes. Our entire team is fluent in English. All documentation, code comments, and meetings are conducted in English to ensure clear communication with global stakeholders.

Ready to Scale?

Work with a partner who understands the numbers behind the code.

Book a Consultation