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Jacek Marchwicki

Backend Developer

Senior developer, team and tech leader, 12 years in the field, and 10 additional years as a coding enthusiast.

Articles by
Jacek Marchwicki
Jacek Marchwicki
Reducing the Risk of Technical Change with A/B Testing

Allegro, the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years. They wanted to overhaul the customer experience in the C2C segment.

Business Strategy
Jacek Marchwicki
From Out of memory to Optimus Prime: Fixing a Mobile App Crash for Our Power Users

Allegro, the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years. They wanted to overhaul the customer experience in the C2C segment.

Technology
Jacek Marchwicki
Boosting Login Success Rates: How Analytics Increased User Onboarding by 29%

Allegro, the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years. They wanted to overhaul the customer experience in the C2C segment.

Business Strategy
Jacek Marchwicki
Focusing external teams’ members to resolve business needs

Allegro, the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years. They wanted to overhaul the customer experience in the C2C segment.

Business Strategy
Jacek Marchwicki
Improving App Stability: A Proactive Approach to Overcoming External Constraints

Allegro, the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years. They wanted to overhaul the customer experience in the C2C segment.

Business Strategy
Jacek Marchwicki
Optimizing Cooperation

Allegro, the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years. They wanted to overhaul the customer experience in the C2C segment.

Insights
Jacek Marchwicki
The Problem of Knowledge Sharing

Allegro, the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years. They wanted to overhaul the customer experience in the C2C segment.

Insights
Jacek Marchwicki
When a product requirement is not worth implementing

Allegro, the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years. They wanted to overhaul the customer experience in the C2C segment.

Technology
Jacek Marchwicki
What the coastline paradox has in common with software development

Allegro, the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years. They wanted to overhaul the customer experience in the C2C segment.

Technology