Przemek Mroczek
@mroczek.dev
Przemek Mroczek, senior backend engineer with 13+ years of experience in Ruby on Rails, AI integration, and system architecture. Writing about distributed systems, self-hosting, and building things the right way.
Przemek Mroczek's Company Logos
Przemek Mroczek's Brand Colors
Hex Code
Color name
RGB
HSL
CMYK
#85221D
Old Brick
133, 34, 29
3, 64, 32
0, 74, 78, 48
#172087
Deep Koamaru
23, 32, 135
235, 71, 31
83, 76, 0, 47
#D5AD63
Tacha
213, 173, 99
39, 58, 61
0, 19, 54, 16
About Przemek Mroczek
Przemek Mroczek is a senior backend engineer whose work spans Ruby on Rails, AI integration, and system architecture. With more than 13 years of experience building and maintaining production systems, he brings a practical engineering perspective shaped by roles at Bamboo Health, PayPal/Braintree, Netguru, Fresha, and Visuality. His current work includes building AI-powered tools for prediction markets, while he is also completing an MSc in AI.
Through his website, Mroczek shares articles, projects, and details about the tools and technologies he uses. His writing explores distributed systems, self-hosting, software architecture, and the craft of building reliable software. Recent articles examine Rails’ place in modern development, coding agents, token compression, and codebase design for AI-assisted work. He is particularly interested in system engineering, early-stage product development, large language models, and self-hosted infrastructure.
The site offers readers an informed, experience-led view of backend development and emerging AI practices, alongside a record of his professional work and ongoing technical explorations.
Brand industry
Computers Electronics and Technology
Company type
Suggest company type
Year founded
Suggest founded year
Company size
Suggest company size
