Janusz Skonieczny
Łomianki Dolne, Poland
Summary
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SeniorJanusz Skonieczny is a Principal Software Developer with over a decade of experience building backend Python web applications, chiefly with Django and Google App Engine. He combines hands-on engineering with product-focused architecture, having founded and scaled a grade-book SaaS that he later sold, and led design and production for a dozen medium-sized enterprise systems. Janusz is a pragmatic advocate for agile practices, CI/CD, hexagonal architecture and tactical/strategic DDD, driving measurable quality improvements like moving tests down the pyramid and achieving near-100% test coverage. He mentors teams on reliability and automation, shapes observability for Kubernetes production systems, and has a track record of reducing compliance overhead while conforming to standards such as ISO 9001. Based in Warsaw, he also applies his technical leadership in civic service as a city council member, bringing a real-world perspective to technology-enabled public and commercial services.
12 years of coding experience
Github Skills (147)
python10
exponential10
django-framework10
authentication10
flask10
django-storages10
django10
decorators10
exceptions10
django-project10
retrying10
command-execution10
unsubscribe10
passwords10
oauth10
Programming languages (13)
Github contributions (5)
wooyek/workstation
Feb 2018 - Jul 2026
Contributions:31 pushes, 6 branches in 8 years 6 months
Invoiced/invoiced-python
Nov 2017 - Sep 2022
Official Python client library for the Invoiced API
Contributions:2 PRs, 1 comment in 4 years 10 months
pythoninvoicedpypiapibilling
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