Filip Defar
Engineering Manager at Booqable Rental Software
Croatia
Summary
👤
Senior🎓
Top SchoolFilip Defar is an engineering manager and seasoned full-stack software developer based in Croatia with 11 years of experience delivering data-driven frontend and backend systems for remote clients worldwide. He specializes in interactive visualizations using D3.js and WebGL, and has a strong Ruby background demonstrated by substantial contributions to the popular grape REST API framework, including feature implementations, specs, and testing infrastructure improvements. At Booqable he progressed from full-stack engineer to engineering manager, blending hands-on coding with team leadership and product-focused delivery. His career includes repeated engagements as a data visualization developer via Toptal and diverse roles across startups and consultancies, giving him a pragmatic, client-facing mindset. Trained with a BSc and MSc in Computer Science from the University of Zagreb, he pairs academic rigor with a track record of shipping tested, production-ready software. An interesting detail: alongside modern WebGL work he still actively improves backend DSLs and testing practices, bridging low-level API design with cutting-edge visual experiences.
11 years of coding experience
9 years of employment as a software developer
Bachelor of Science, Computing, Bachelor of Science, Computing at University of Zagreb/Sveuciliste u Zagrebu
English, Croatian
Github Skills (9)
rspec10
api10
grapesjs10
apidoc10
gr10
ruby10
api-design9
dsl9
testing8
Programming languages (9)
Github contributions (5)
ruby-grape/grape
Mar 2015 - Mar 2015
An opinionated framework for creating REST-like APIs in Ruby.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 commits, 8 PRs, 9 comments in 6 days
Contributions summary:Filip contributed extensively to the `grape` API framework, specifically focusing on the implementation and testing of core features related to DSL methods. They added specs and implemented features such as `rescue_from`, `params`, `use` and namespace alias methods. Additionally, the user enhanced the framework by adding documentation and implementing fixes for status code handling and API routes. The user also focused on improving the testing infrastructure, adding integration tests and new test cases.
ruby-on-railsapirails-apirubyrest
dabrorius/dabrorius.github.io
May 2015 - Mar 2025
Contributions:61 pushes, 4 branches in 9 years 11 months
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