Felix Kaminski
Staff Software Engineer at Reneo Group
Hamburg, Germany
Summary
👤
Senior🎓
Top SchoolFelix Kaminski is a Staff Software Engineer based in Hamburg with 12 years of experience building backend systems, data pipelines, and evolving monoliths into service meshes. He drives technical innovation—introducing new technologies, refactoring architecture, and operationalizing feed-data for external processing—while occasionally contributing to frontend needs and micro-UIs. Felix has led engineering teams and shaped architecture at multiple companies, from real-time federated GraphQL APIs for mobility services to large-scale data warehouses for analytics. He contributes to open-source tooling, notably improving cross-platform robustness in a popular Ruby on Rails PDF generation plugin by adding interactive wkhtmltopdf progress capture and Windows fallbacks. Known for blending hands-on coding with leadership, he’s comfortable moving between deep backend engineering and pragmatic product-facing improvements. Trained with a Master’s in Computer Science from Universität zu Lübeck, he pairs academic grounding with proven production delivery.
12 years of coding experience
6 years of employment as a software developer
Master Informatik, Master Informatik at Universität zu Lübeck
Github Skills (8)
pdf-generation10
rails10
wkhtmltopdf10
ruby-on-rails10
ruby10
openapi9
open-api-v39
testing8
Programming languages (6)
Github contributions (5)
mileszs/wicked_pdf
Oct 2013 - Jun 2014
PDF generator (from HTML) plugin for Ruby on Rails
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits in 8 months
Contributions summary:Felix primarily focused on enhancing the `wicked_pdf` Ruby on Rails plugin, implementing features related to PDF generation from HTML. They introduced support for capturing the progress of the `wkhtmltopdf` command line tool, particularly by utilizing `PTY` to enable interactive parsing of the standard output. Additionally, the user addressed compatibility issues across different operating systems, implementing a fallback mechanism for Windows environments to leverage standard `Open3` functionality. This involved merging code changes and addressing bug fixes to ensure the plugin's stability and compatibility.
pdfruby-on-rails
Figedi/metering
Aug 2020 - Jun 2024
Contributions:2 releases, 1 PR, 11 pushes in 3 years 10 months
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