Marian Mrózek
Senior Software Engineer (Ruby) at Newsmatics
Opava, Moravia-Silesia, Czechia
Summary
👤
Senior🎓
Top SchoolMarian Mrózek is a Senior Software Engineer with 15 years of experience specializing in Ruby backend development, API design, and performance-oriented architecture. Based in Opava, Czechia, he has a strong track record optimizing databases and search workflows using PostgreSQL, Redis, SphinxQL and AWS Aurora, and deploying services on Kubernetes, Docker and Heroku. He’s delivered payment and data-migration integrations for large consumer platforms and built reliable Sinatra/Sequel backends that handle complex filtering, pagination and large datasets. A pragmatic full-stack thinker, Marian pairs RSpec-driven quality with hands-on frontend and scraping experience (Node.js, Puppeteer/Playwright) to automate workflows and accelerate delivery. He’s comfortable operating across the stack—from low-level query tuning to cloud orchestration—and often surfaces non-obvious performance improvements that materially reduce latency and cost.
15 years of coding experience
16 years of employment as a software developer
Bc., Information Technology, Bc., Information Technology at Brno University of Technology
English, Čeština
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (123)
mls10
mvc10
ruby10
crawler10
rack10
hotel-booking10
html10
spree10
puppeteer10
scrape10
rails10
apify10
crawling10
nodejs10
npm10
Programming languages (7)
Github contributions (5)
blahutka/novinky
Oct 2010 - Mar 2011
Contributions:91 commits in 5 months
rubydev/recurring_select
Aug 2015 - Nov 2018
Contributions:6 pushes in 3 years 3 months
eventsrecurring-eventsselectorssettingrails
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