Felipe Martins
Senior Software Engineer at Instapro Group
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolFelipe Martins is a Senior Software Engineer based in Berlin with 12 years of experience focused on backend development and DevOps, currently shaping and modernizing legacy systems at Instapro Group. He combines strong architectural skills with disciplined Test-Driven Development and Domain-Driven Design practices, consistently delivering robust, maintainable services. His career spans senior backend roles across fintech and marketplace companies such as Billie, MyHammer and CHECK24, where he drove backend reliability and scalability. An active open-source contributor, he improved test coverage and validation logic in the popular Respect/Validation PHP library, demonstrating attention to edge cases and QA. Trained originally in physics at Universidade de São Paulo and University of Tübingen, he brings analytical rigor and a research-oriented mindset to engineering problems. Colleagues know him for pragmatic leadership and a knack for turning complex domain models into well-tested systems.
11 years of coding experience
12 years of employment as a software developer
Bachelor of Science (BS), Physics, Bachelor of Science (BS), Physics at University of TübingenUniversity of São Paulo
Portuguese, English, German, Italian
Stackoverflow
165reputation
7kreached
4answers
0questions
Github Skills (12)
unit-testing10
php10
component-kit10
validation10
validations10
validators10
phpunit10
integration-testing10
slim6
phalcon6
alpine-linux6
dockerfile6
Programming languages (14)
Github contributions (5)
Respect/Validation
Oct 2015 - Nov 2015
The most awesome validation engine ever created for PHP
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:5 commits, 5 PRs, 2 comments in 20 days
Contributions summary:Felipe primarily contributed to the validation engine by adding unit and integration tests for the "CountryCode" rule. Their work included implementing tests for different country code formats (alpha-2, alpha-3, and numeric) and verifying both positive and negative validation scenarios. They also improved the `PerfectSquare` rule by implementing a check for an integer result of the square root. The focus of the work was improving the robustness and coverage of the validation library's functionality.
validationvalidation-enginephpeverstandalone
bauhausphp/http-port
Sep 2020 - Jan 2023
Contributions:17 reviews, 11 PRs, 11 pushes in 2 years 4 months
phppsr-15
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