Yam Mesicka
Principal DevEx Engineer at Palo Alto Networks
Tel-Aviv, Tel-Aviv District, Israel
Summary
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Rockstar🎓
Top SchoolYam Mesicka is a Principal DevEx Engineer based in Tel Aviv with 12 years of experience building backend, infra, and developer experience platforms across security and SaaS domains. He has consistently improved developer productivity and reliability—automating mobile CI/CD, reducing iOS release time by 80%, and stabilizing CI through type annotations and testing. At CyCognito he drove detection precision improvements and surfaced thousands of silent runtime errors via instrumentation, while at startups he architected dashboards and IaC for customer-facing analytics. He mentors engineers, leads hiring, and has a track record of migrating complex systems (DynamoDB to RDS) and shipping automatic firmware-patching tooling. An active contributor to Hebrew Python education notebooks, he blends hands-on engineering with a strong emphasis on developer ergonomics and measurable quality gains.
12 years of coding experience
7 years of employment as a software developer
CourseraComputer Science, Computer Science at Hadera High SchoolUdacity
English, Hebrew
Stackoverflow
6,463reputation
791kreached
142answers
34questions
python
top-5%
Github Skills (10)
markdown10
jupyter-notebook10
markdown-it10
documentation10
python9
php6
math6
dictionary6
mysql6
mysql-python6
Programming languages (12)
Github contributions (5)
PythonFreeCourse/Notebooks
Apr 2017 - May 2021
Learn Python for free using open-source notebooks in Hebrew.
Role in this project:
Technical Writer
Technical WriterContributions:8 reviews, 130 commits, 60 PRs in 4 years 1 month
Contributions summary:Yam's contributions primarily involve uploading and modifying notebooks, including adding markdown cells with explanations and examples to improve the learning experience. The commits focus on explaining Python concepts, providing exercises, and clarifying phrasing within the notebooks. Their impact is to improve and clarify the educational content in the repository.
pythonlearn-to-code-for-freelearn-by-doingjupyter-notebooklearn-python
PythonFreeCourse/calendar
Jan 2021 - Feb 2021
Contributions:1026 reviews, 69 commits, 208 PRs in 1 month
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