Contact Web Berserker Michał Sobczak
Get a custom proposalSenior PrestaShop, Symfony & UnoPIM/Bagisto
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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Min project size
$5,000+
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Hourly rate
$100 - $149 / hr
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Employees
Freelancer
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Locations
Poznań, Poland
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Year founded
Founded 2021
1 Locations
- Poznań , Poland
Service Lines
- API Development
- 10%
Select Focus Area
- Application Platforms
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- Linux server
- 90%
- Amazon Application Development Framework
- 5%
- E-commerce Systems
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- PrestaShop
- 100%
- Programming & Scripting
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- PHP
- 100%
Industries
- eCommerce
- 70%
- Retail
- 20%
- Information technology
- 10%
Clients
- Midmarket ($10M - $1B)
- 60%
- Small Business (<$10M)
- 30%
- Enterprise (>$1B)
- 10%
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Our Story
Web Berserker solves complex e-commerce and PIM challenges with surgical expertise, avoiding generic agency processes.
As a former Lead Developer and now an official UnoPIM & Bagisto implementation partner, I provide CTOs with direct access to Senior engineering - eliminating communication layers.
My Core Values: Direct Impact: You partner directly with the engineer. Quality: Limited projects per quarter for total focus on critical migrations and implementations. No "Spaghetti Code": Scalable, do
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