Aleksi Häkli
Software Architect at Reaktor
Helsinki, Finland
Summary
🤩
Rockstar🎓
Top SchoolAleksi Häkli is a software architect based in Helsinki with 13 years of experience building and modernizing backend systems and developer tooling. He combines hands-on engineering with a customer-focused mindset, having progressed from software engineer to senior roles and now architecture at Reaktor. Aleksi is an active open-source contributor in the Django ecosystem, improving security and reliability in well-known projects like django-axes, django-defender and sorl-thumbnail while often focusing on documentation, CI/CD and cross-platform robustness. His work shows a penchant for maintainability—refactoring deprecated code, enhancing tests, and upgrading build pipelines to support modern Python and Django versions. He brings practical DevOps sensibilities to backend work, having implemented health checks, S3 storage checkers and CI automations. Outside the obvious titles, Aleksi’s contributions reveal a quieter strength: making projects easier to use and sustain for other developers.
13 years of coding experience
10 years of employment as a software developer
Master of Science (Technology) - MSc (Tech), Master of Science (Technology) - MSc (Tech) at Tampere University of Technology
Swedish, German, English, Finnish
Stackoverflow
1,441reputation
82kreached
15answers
0questions
rest
top-5%
python
top-5%
django
top-5%
django-rest-framework
top-5%
json
top-5%
Github Skills (33)
ip-address10
github-ci10
restructuredtext10
pytest10
python10
project-management10
back-end-development10
sphinx10
django10
testing10
ip10
cicd10
read-me10
githubaction-workflow10
documentation10
Programming languages (7)
Github contributions (5)
jazzband/django-axes
Nov 2016 - Nov 2022
Keep track of failed login attempts in Django-powered sites.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:113 releases, 77 reviews, 492 commits in 6 years 1 month
Contributions summary:Aleksi primarily contributed to the backend of the Django-axes project, focusing on improvements related to IP address parsing and handling. Their work included fixing bugs and adding tests for both IPv4 and IPv6 address formats. They also worked on improvements to the proxy settings within the Django application.
django
jazzband/django-widget-tweaks
Jun 2019 - Jan 2022
Tweak the form field rendering in templates, not in python-level form definitions. CSS classes and HTML attributes can be altered.
Role in this project:Back-end Developer & Automation Engineer
Back-end Developer & Automation EngineerContributions:11 releases, 7 reviews, 23 commits in 2 years 7 months
Contributions summary:Aleksi primarily contributed to the maintenance and evolution of the django-widget-tweaks library. Their work includes adding support for new Django and Python versions, fixing formatting errors and documentation issues. They also focused on build process by updating the project's CI/CD configuration using GitHub Actions and by automating code formatting tools.
cssform-fieldspythonrendering
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