Renato Mefi
CTO at 7CTOs
Amsterdam, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolRenato Mefi is a seasoned CTO and engineering leader with 16 years of experience helping startups, scale-ups and enterprises adopt data streaming and event-driven architectures to accelerate time-to-market. He blends deep backend and distributed systems expertise with pragmatic platform thinking—prioritizing ROI, reuse and measurable reductions in run and development costs rather than technology for technology’s sake. Renato has led platform and data efforts at companies like SurveyMonkey and Gorgias, built production-grade data platforms and contributed to notable open-source projects such as Debezium (MongoDB CDC) and php-vcr. He prefers hands-on leadership that grows engineers through real technical challenges and builds healthy teams that ship reliably at scale. Based in Amsterdam, he frequently operates as a fractional CTO/advisor, steering migrations, data mesh pivots and platform transformations across B2B2C and enterprise contexts. An interesting, less obvious strength is his focus on treating data as the primary integration layer—enabling rapid reuse and cross-team composability rather than just analytics.
15 years of coding experience
11 years of employment as a software developer
CDC Project Management, CDC Project Management at IbmecGraduation Information Technology, Graduation Information Technology at UNEB
Portuguese, English
Stackoverflow
2,161reputation
200kreached
45answers
3questions
php
top-5%
phpstorm
top-5%
symfony
top-5%
Github Skills (57)
unit-testing10
cdc10
kafka-connect10
docker10
symfony-bundle10
debezium10
databases10
bash10
containerization10
dockers10
wpgraphql10
mongodb-database10
java10
soap10
cicd10
Programming languages (15)
Github contributions (5)
php-vcr/php-vcr
Oct 2016 - Jul 2018
Record your test suite's HTTP interactions and replay them during future test runs for fast, deterministic, accurate tests.
Role in this project:
Back-end Developer & QA Engineer / Test Automation Engineer
Back-end Developer & QA Engineer / Test Automation EngineerContributions:8 releases, 48 commits, 45 PRs in 1 year 9 months
Contributions summary:Renato primarily contributed to improving the test suite and fixing related issues within the php-vcr repository. They addressed bugs in the SOAP testing by updating and correcting the WSDL usage, ensuring compatibility. Additionally, the user enhanced version constraints, updated dependencies like PHPUnit, and refactored tests to be more robust. Their work included improvements to the stream processing functionality, fixing php-cs-fixer issues, and adding tests.
guzzle-testapi-testingtesting-toolssoap-testtest-webservices
debezium/container-images
Nov 2018 - May 2019
Docker images for Debezium. Please log issues in our JIRA at https://issues.redhat.com/projects/DBZ/summary
Role in this project:DevOps Engineer
DevOps EngineerContributions:16 commits, 8 PRs, 19 comments in 6 months
Contributions summary:Renato focused on improving the build and deployment process for the Debezium container images. They updated Dockerfiles, implemented a Dockerfile linter with Hadolint, and introduced a script to download Maven dependencies. Their contributions included refactoring build scripts, ensuring proper image tagging, and correcting typos in configuration settings related to offset timeouts. They also worked on improving the build process and ensuring new builds are correctly chained.
debeziumjiradockerdocker-imagesredhat
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