Marcin Raczkowski
Founder at Marmot Consulting
Krakow, Lesser Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolMarcin Raczkowski is a seasoned full-stack web developer and founder with 17 years of experience delivering production-grade Ruby on Rails applications and e-commerce platforms. He combines deep backend expertise in Ruby, SQL and PostgreSQL with practical front-end skills in JavaScript, having led teams and built scalable retail and research-oriented systems. As a contributor to the notable open-source Spree e-commerce project, he focused on backend fixes, migrations and test stability, reflecting a pragmatic, quality-first approach. Marcin prefers short-term contract engagements or senior leadership roles (Lead Developer, Architect, CTO), is open to worldwide relocation outside the USA, and brings hands-on delivery experience from startups to large retail clients. An entrepreneur at heart, he runs Marmot Consulting while maintaining a track record of shipping both feature-rich products and critical infrastructure improvements.
17 years of coding experience
5 years of employment as a software developer
AGH University of Krakow
English
Stackoverflow
1,590reputation
314kreached
21answers
10questions
fonts
top-5%
html
top-5%
canvas
top-5%
zurb-foundation
top-5%
Github Skills (24)
database-migrations10
ruby-rails10
postgresql10
ecommerce10
rails10
ruby10
commerce10
spree10
database-migration10
ruby-on-rails10
spreed10
fonts9
canvas9
sql9
zurb-foundation9
Programming languages (11)
Github contributions (5)
spree/spree
Jun 2009 - Dec 2009
Open Source eCommerce Platform for B2B, Marketplace, and Enterprise. REST API, TypeScript SDK, and production-ready Next.js storefront. Self-host it. Own your stack. No vendor lock-in. Zero platform fees.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:41 commits in 5 months
Contributions summary:Marcin primarily focused on bug fixes and improvements related to the Spree e-commerce platform's back-end functionality. They addressed issues in database migrations, resolving failures related to specific database versions. Additionally, the user worked on fixing failing tests, indicating involvement in test-driven development. Their contributions also included refactoring charges, demonstrating a focus on improving the core financial aspects of the platform.
ecommercenextjsrestrest-apitypescript
swistak/quickling
Dec 2013 - Jun 2019
Contributions:29 commits, 19 pushes in 5 years 6 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.