Christian Ledermann
Sr. Software Engineer at Oomnitza
Tuam, Ireland
Summary
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Rockstar🎓
Top SchoolChristian Ledermann is a senior software engineer with 15+ years building Python backends and APIs, currently leading backend development at Oomnitza where he focuses on automation, technical debt reduction, and reliable feature delivery. He has deep experience with open-source projects—contributing to geospatial OGC support in OWSLib, charting features in pygal, and timezone fixes in django-recurrence—bringing pragmatic, standards-minded implementations to production systems. His background spans CMS/Plone work for international organizations, large-scale Django migrations and service decomposition, and performance and test-coverage-driven improvements that raised legacy systems from ~70% to >95% coverage. A pragmatic polyglot who prefers readability and maintainability over hype, he pairs engineering craft with mentorship, workshops, and conference talks on "Hypermodern Python." Notably, his career blends academic training in electrical engineering and information science with a long-standing commitment to open source and practical automation of tedious operational tasks.
15 years of coding experience
12 years of employment as a software developer
Apprenticeship, Fachinformatiker - Anwendungsentwicklung, Apprenticeship, Fachinformatiker - Anwendungsentwicklung at DCS - Dittrich Computer und SystemeElectrical Engineering, Electrical Engineering at Technical University of MunichElectrical Engineering, Electrical Engineering at Fachhochschule LandshutEnglish literature and information science, English literature and information science at University of Düsseldorf
English, German, portugese
Stackoverflow
1,697reputation
269kreached
18answers
0questions
django
top-5%
python
top-5%
Github Skills (22)
data-visualizations10
zone10
pytest10
ogc10
python10
django10
testing10
data-visualisation10
ws10
svg10
xml-parsing10
timezone10
wss10
data-visualization10
lib9
Programming languages (10)
Github contributions (5)
geopython/OWSLib
Dec 2012 - Jan 2013
OWSLib is a Python package for client programming with Open Geospatial Consortium (OGC) web service (hence OWS) interface standards, and their related content models.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits in 1 month
Contributions summary:Christian contributed to the `owslib` library, focusing on implementing and refining features related to OGC web services. The commits demonstrate the addition of functionality for Tile Map Service (TMS) support, including parsing capabilities documents, and implementing methods for retrieving tile data. Code changes involve the creation of classes and methods to handle TMS metadata, data retrieval, and adhering to OGC standards.
pythonosgeowmsweb-servicegis
Kozea/pygal
Aug 2013 - Sep 2013
PYthon svg GrAph plotting Library
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 commits, 1 comment in 22 days
Contributions summary:Christian primarily contributed to the core functionality of the pygal library, focusing on enhancing its graphing capabilities. Their work included adding features like the ability to add links to legends and implementing inner radius functionality for pie charts. The user also improved the library by reversing the order of elements in horizontal bar graphs and introducing tests.
pythonsvgsvg-graphdata-visualizationplotting
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