Stefan Wójcik
Senior Software Engineer at Close
Krakow, Lesser Poland Voivodeship
Summary
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Rockstar🎓
Top SchoolStefan Wójcik is a Senior Software Engineer with 14 years of experience building backend systems, currently contributing to Close since its earliest commits. He specializes in Python backend development and has a strong track record improving core libraries and Flask ecosystem projects—contributions include robust email header parsing in flask-mail and quality, bug-fix work across MongoEngine and Flask extensions. Stefan blends startup pragmatism with careful engineering: he ships features for production CRMs while also improving test coverage and dependency hygiene in open-source tooling. Earlier roles span enterprise integration (J2EE ESB for automated Excel imports) and desktop tooling in C#, showing versatility across stacks. Based in Krakow, he combines deep backend expertise with attention to maintainability and edge-case handling that often surfaces in his library-level fixes.
14 years of coding experience
2 years of employment as a software developer
BSc, Electrical and Computer Engineering (studies conducted in English), BSc, Electrical and Computer Engineering (studies conducted in English) at Warsaw University of TechnologyComputer Science, Computer Science at Kyungpook National University
English, Polish
Stackoverflow
877reputation
811kreached
5answers
0questions
mongodb
top-5%
mongoose
top-5%
Github Skills (36)
unit-testing10
debug10
back-end-development10
sendmail10
python10
send-email10
testing10
wtforms10
smtp10
smtps10
flask-ask10
mongodb-database10
e-mail10
smtpd10
orm10
Programming languages (11)
Github contributions (5)
MongoEngine/mongoengine
Dec 2012 - Jul 2019
A Python Object-Document-Mapper for working with MongoDB
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 releases, 377 commits, 171 PRs in 6 years 8 months
Contributions summary:Stefan primarily contributed to the core functionality of the mongoengine library, specifically focusing on enhancing the query set functionality. Their work included implementing new unit tests for ordering, filtering, and other query-related features to increase test coverage. They also addressed issues related to embedded documents and custom primary keys and the fix the incorrect behavior of some update features. These improvements would contribute to the stability and reliability of the ORM for MongoDB.
mongodb-ormpythonmongodocument-mapperpython3
MongoEngine/flask-mongoengine
Dec 2012 - Feb 2017
MongoEngine flask extension with WTF model forms support
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 releases, 55 commits, 17 PRs in 4 years 3 months
Contributions summary:Stefan primarily contributed to bug fixes and code quality improvements within the Flask-MongoEngine project. Their work involved addressing issues with database settings, particularly replicaSet configurations. Furthermore, they made code style adjustments, enhanced tests, and updated dependencies to improve the overall quality of the project. These changes directly improved the functionality and maintainability of the project.
flask-mongoenginepythonwtfflaskflask-application
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