# Web Berserker Michał Sobczak

> Senior PrestaShop, Symfony & UnoPIM/Bagisto

- Canonical listing: https://agencysource.com/agencies/web-berserker-micha-sobczak
- Location: Poznań, Poland
- Categories: [SEO & Organic Search](https://agencysource.com/categories/seo), [Custom Software Development](https://agencysource.com/categories/custom-software-development), [Ecommerce Development](https://agencysource.com/categories/ecommerce-development)
- Services: E-Commerce Development, Custom Software Development, API Development, Application Management & Support
- Industries: eCommerce, Retail, Information technology
- Team size: Freelancer
- Hourly rate: $100 - $149 / hr
- Minimum project: $5,000+
- Founded: 2021
- Website: https://msobczak.pl
- Listing: Not yet claimed
- Agency Source rating: no Agency Source reviews yet

## About

Michał Sobczak is a Certified PrestaShop Expert and Senior Backend Developer with 10+ years of experience in high-performance e-commerce - now also an official regional implementation partner for UnoPIM and Bagisto (Webkul), specializing in open-source PIM and e-commerce platform deployments across the EU.

Unlike typical agencies that focus on basic setups, "Web Berserker" specializes in solving complex architectural challenges, critical performance bottlenecks, and difficult migrations for established businesses - as well as end-to-end PIM implementations for growing product catalogs.

Core Services:

PIM Implementation & Integration: UnoPIM and Bagisto setup, migration from Akeneo/legacy PIM systems, catalog architecture for multi-channel e-commerce.

Advanced Migrations: Safe upgrades from legacy PrestaShop (1.6/1.7) to 8.x with guaranteed data integrity and SEO preservation.

Performance Engineering: Deep optimization of slow stores (SQL profiling, Redis/Memcached implementation, Core Web Vitals) to handle high traffic.

Custom Development: Building bespoke Symfony/Laravel-based modules, complex logic, and API integrations (ERP/PIM/WMS) that standard plugins cannot handle.

Rescue Missions: Stabilizing systems after failed updates or security breaches.

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