Christian Siefkes
Software Developer at Freelance
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolChristian Siefkes is a Berlin-based software developer with a PhD in Computer Science and over a decade of freelance experience building backend systems, search integrations, and cloud-native services. He brings deep expertise in statistical machine learning dating back to his Diplom thesis in 2001/2002, and applies that research background to practical problems in REST APIs, microservices, and scalable data architectures. Proficient across Python, Ruby, Haskell, Java, JavaScript and SQL, he focuses on robust engineering practices including TDD, refactoring, profiling and optimization. Experienced with AWS and database/search server integration, he turns experimental ML ideas into production-ready components. Comfortable in agile/Scrum environments, he combines hands-on coding with architectural thinking and a knack for squeezing performance out of complex systems. Fluent in German, English and Esperanto, he’s open to new engagements that bridge machine learning research and reliable backend engineering.
12 years of coding experience
Doctor of Philosophy - PhD, Computer Science, Doctor of Philosophy - PhD, Computer Science at Freie Universität Berlin
Stackoverflow
329reputation
5kreached
1answer
0questions
Github Skills (92)
programming-language10
parser10
python10
dump10
file-parser10
extractor10
firebase10
wiktionary10
toml10
dictionary10
tom10
scribunto10
ini10
extraction10
wikitext10
Programming languages (7)
Github contributions (5)
ChristianSi/toml
Aug 2019 - Oct 2023
Tom's Obvious, Minimal Language
Contributions:18 pushes, 20 branches in 4 years 2 months
tom
ChristianSi/miniscripts
Mar 2017 - Sep 2024
Contributions:9 pushes, 1 branch in 7 years 7 months
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