Adam Niedzielski
Senior Automation Engineer
Subcarpathian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolAdam Niedzielski is a Senior Automation Engineer with 12 years of hands-on experience building reliable test and automation systems across fintech and software services, currently at HSBC. He progressed from junior testing roles to leadership positions (QA Lead, Test Manager) and combines practical QA management with deep backend engineering contributions to prominent open-source projects like Sidekiq and Mastodon. His open-source work improved background job reliability and ActivityPub/Webfinger behavior—showing an uncommon blend of systems thinking, test infrastructure craftsmanship, and protocol-level fixes. Based in Subcarpathian Voivodeship, Poland, Adam holds a master’s in IT and is known for turning brittle automation into transaction-aware, production-grade processes that scale in complex, distributed environments.
12 years of coding experience
7 years of employment as a software developer
Master's degree, Information Technology, Master's degree, Information Technology at Kielce University of Technology
English
Github Skills (20)
ruby-rails10
testing10
rspec10
rails10
webfinger10
sidekiq10
ruby10
activitypub10
background-process9
background-worker9
jobservice9
background-processing9
regular-expression9
job-search9
background-task9
Programming languages (13)
Github contributions (5)
sidekiq/sidekiq
Jan 2022 - May 2022
Simple, efficient background processing for Ruby
Role in this project:
Back-end Developer
Back-end DeveloperContributions:13 reviews, 23 commits, 19 PRs in 3 months
Contributions summary:Adam primarily focused on improving the Sidekiq background processing library. Their contributions involved enhancing the testing infrastructure, specifically adding and refining tests related to job scheduling and bulk job operations. They refactored code to remove parallel execution paths and added a transaction-aware client for handling job enqueuing within database transactions. The user also updated the library's internal APIs.
background-jobsrubysidekiqjrubyjobs
mastodon/mastodon
Oct 2023 - Aug 2024
Your self-hosted, globally interconnected microblogging community
Role in this project:Back-end Developer
Back-end DeveloperContributions:21 reviews, 8 PRs, 32 comments in 9 months
Contributions summary:Adam primarily focused on enhancing the Mastodon back-end, with a strong emphasis on Webfinger and ActivityPub-related functionalities. Their contributions included fixing bugs related to Webfinger responses, improving the handling of self links, and resolving redirection issues. Additionally, the user worked on test improvements, as seen by their adjustments to test descriptions. The user also addressed an encoding bug in the regular expressions used for mentions and tags.
social-networkwebfingerpixelfedhosteddocker
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