Sławosz Sławiński
Owner at IT Solutions slawosz.com LTD
England, United Kingdom
Summary
👤
Senior🎓
Top SchoolSławosz Sławiński is a pragmatic software engineer and founder with 17 years of experience and deep commercial expertise in Ruby on Rails (12 years) and four years of Go. He runs his own consultancy and has held senior engineering roles at UK government departments and major tech companies, delivering production services, migrations, and performance optimizations across Rails, Elixir and cloud infrastructure. An active open-source contributor, he’s improved UX and internals of notable projects like RailsAdmin and strengthened test coverage for the widely used GoReplay traffic-replay tool. He combines hands-on coding with infrastructure-as-code (Terraform), CI/CD improvements and security-minded engineering from work in high-assurance environments. Outside work he channels the same methodical approach into mountaineering and technical sports, reflecting a practical, risk-aware problem-solving style. His background in building SaaS products end-to-end (emailwizard.io) and gluing heterogeneous systems gives him a rare full-stack-to-devops fluency.
17 years of coding experience
14 years of employment as a software developer
Bachelor's degree, computer science, Bachelor's degree, computer science at Polish-Japanese Academy of Information Technology
Stackoverflow
11,447reputation
709kreached
61answers
180questions
hash
top-5%
csv
top-5%
append
top-5%
ruby
top-5%
Github Skills (32)
mstest10
testing10
http10
rails10
teste10
testing-library10
go10
front-end-development10
ui-testing10
ruby-on-rails10
javascript9
append9
ruby9
css9
fileio9
Programming languages (11)
Github contributions (5)
railsadminteam/rails_admin
Nov 2010 - Jan 2011
RailsAdmin is a Rails engine that provides an easy-to-use interface for managing your data
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:35 commits in 1 month
Contributions summary:Sławosz primarily contributed to the RailsAdmin engine, a Ruby on Rails application. Their work included enhancing the user interface by cycling model row backgrounds, moving submit buttons to partials for improved organization, and linking model names in the dashboard to the model list page for better navigation. Additionally, the user refactored binary fields and integrated Facebox for creating related records.
railsrails-enginerailsadminrubyactivemodel
buger/goreplay
Aug 2013 - Oct 2013
GoReplay is an open-source tool for capturing and replaying live HTTP traffic into a test environment in order to continuously test your system with real data. It can be used to increase confidence in code deployments, configuration changes and infrastructure changes.
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:36 commits in 2 months
Contributions summary:Sławosz primarily focused on writing and improving integration tests for the GoReplay project. Their work involved creating new test cases, particularly for file-based request handling and replay functionality. They added flags to the listener and replay components to support file-based request processing and ensured the tests correctly saved and replayed HTTP traffic from files. These changes contributed to improving the project's testing coverage and reliability.
golangconfidencecapturingdevopstesting
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.