Dominik Čermák
Ruby Developer at Newsmatics
Prague, Czechia
Summary
👤
Senior🎓
Top SchoolDominik Čermák is a pragmatic Ruby developer with nine years of experience building and maintaining production web applications, currently working at Newsmatics in Prague. He specializes in Ruby 2/3 backends with Sinatra and Rails, Hotwired frontends, and cloud-native deployments on AWS, pairing strong monitoring and CI/CD practices with hands-on optimization and security checks. Dominik has a track record integrating third-party platforms (Shopify, Auth0, ČEZ) and operating both monolithic apps and Go microservices for energy management at Enerfis. He leans on robust testing (Rspec, Capybara), background job systems (Sidekiq/Resque), and observability stacks (Grafana, Prometheus, Sentry) to keep systems reliable. Although he started but did not complete formal CS studies, his consistent multi-year product delivery and local maintenance of tools like Mailcoach show a practical, systems-oriented mindset and willingness to tackle cross-stack challenges.
9 years of coding experience
6 years of employment as a software developer
Unfinished, Computer Software Engineering, Unfinished, Computer Software Engineering at FIT CTU in PragueGeneral Studies, General Studies at Grammar school Jeronýmova Liberec
English, Czech
Stackoverflow
434reputation
14kreached
17answers
15questions
Github Skills (27)
env10
dotenv10
environment-variables10
12-factor10
ruby9
normal-distribution8
gorilla8
middleware8
matcher7
router7
http-router7
csrf-protection6
ruby-on-rails6
normal6
golang6
Programming languages (4)
Github contributions (5)
domcermak/normal_distribution
Dec 2020 - Jun 2024
Ruby gem for normal distribution calculations written in C
Contributions:4 releases, 7 PRs, 42 pushes in 3 years 6 months
ruby-gemcalculationsnormalrubygem
BelinaJaroslav/DBS_2020
Dec 2020 - Jan 2021
Contributions:14 reviews, 26 PRs, 66 pushes in 21 days
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