Antti Haapala
CEO, Consultant, Software Architect at AnttiPatterns Oy
Oulu, North Ostrobothnia, Finland
Summary
🤩
Rockstar🎓
Top SchoolAntti Haapala is a seasoned software architect and CEO with over 15 years building web-based information systems, data analytics and blockchain solutions from startup bootstraps to enterprise products. He combines deep, hands-on expertise across languages (Python, C/C++, JavaScript/TypeScript) and platforms (Linux, embedded, cloud) with practical experience in distributed systems, DevOps and large-scale data engineering. As founder of Interjektio and leader at multiple ventures, he has architected products ranging from rail interlocking CAD tools to UX recording hardware/software and supported a major European crypto exchange on scalability and devops. An active open-source contributor, he has improved Python projects like Pyramid and python-Levenshtein to add Python 3 support and reliable CI, reflecting a focus on robust tooling and reproducible builds. Based in Oulu, Finland, he blends veteran low-level systems fluency (6502/x86/ARM asm roots) with modern cloud-native practices such as Terraform, AWS CDK and Snowflake.
15 years of coding experience
21 years of employment as a software developer
M.Sc., Industrial Engineering, Computer Science, English, M.Sc., Industrial Engineering, Computer Science, English at University of OuluAbitur / matriculation examination, Finnish high school, Abitur / matriculation examination, Finnish high school at Oulun Lyseon lukio
English, Finnish, Swedish, German, Vietnamese, Chinese
Stackoverflow
131,979reputation
22.9mreached
2,416answers
19questions
encoding
top-5%
dynamic
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package
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floating-point
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amazon-ec2
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boto
top-5%
Github Skills (102)
python10
testing10
c1110
gcc10
c1710
scopes10
optimization10
linux10
pyramid10
socket10
glibc10
workflow-engine10
string-algorithms10
dictionary10
documentation10
Programming languages (14)
Github contributions (5)
ztane/python-Levenshtein
Nov 2013 - Feb 2021
The Levenshtein Python C extension module contains functions for fast computation of Levenshtein distance and string similarity
Role in this project:
Back-end Developer
Back-end DeveloperContributions:20 commits, 2 PRs, 7 pushes in 7 years 3 months
Contributions summary:Antti primarily focused on maintaining and updating the `python-levenshtein` library, a Python C extension for computing string edit distances. Their contributions included bumping the version, fixing compatibility issues, and implementing minor code improvements. The user also made changes to the documentation and setup files. Key improvements were the incorporation of Python 3 support and enhancements to the code.
computationstring-matchingpythonstringstring-comparison
Pylons/pyramid
Feb 2013 - Jun 2022
Pyramid - A Python web framework
Role in this project:Technical Writer
Technical WriterContributions:11 commits, 4 PRs, 100 comments in 9 years 5 months
Contributions summary:Antti primarily contributed to improving the project's documentation. Their changes included adding clarifying comments, enhancing narrative documentation for tweens, removing extra indentation from code examples, and fixing documentation errors. They also addressed issues related to documentation of authorization and the output messages of server commands, enhancing the usability and clarity of the documentation.
pythonpyramidpython-webframeworkpylons
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