Serafeim Papastefanos
Software Engineer at Hellenic Coast Guard
Athens, Attica, Greece
Summary
👤
Senior🎓
Top SchoolSerafeim Papastefanos is a pragmatic full-stack software engineer with 13+ years building production systems for government, banking, startups and research, currently delivering internal and public-facing applications for the Hellenic Coast Guard. He combines deep systems-level skills (C, Assembly, Linux/Windows administration) with modern web and mobile stacks (Python/Django, Java, JS, Android/iOS) and an ability to ship end-to-end solutions—from device-integrated mobile apps to complex workflow-driven web services. An active open-source contributor, he has fixed and extended features in prominent Django projects like Wagtail and implemented PDF export and UI improvements across popular repos. His background includes research-grade multimedia and networking work and hands-on BPM integrations at a major bank, evidencing both theoretical rigor and enterprise integration experience. Colleagues describe him as methodical and patient when tackling tricky problems, and his long language list shows a genuine curiosity for diverse paradigms beyond typical full-stack practice.
13 years of coding experience
5 years of employment as a software developer
Master of Science (MSc), Electrical and Computer Engineering, 9.3/10, Master of Science (MSc), Electrical and Computer Engineering, 9.3/10 at National Technical University of Athens
Greek, English
Stackoverflow
15,071reputation
1.8mreached
243answers
64questions
foreach
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django
top-1%
django-models
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ffmpeg
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csv
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Github Skills (30)
cms10
javascript10
python10
django10
testing10
pdf10
forms10
exporter10
sql10
angularjs10
pdfa10
backend10
reporting-services10
ffmpeg9
loops9
Programming languages (21)
Github contributions (5)
explorerhq/sql-explorer
Nov 2016 - Aug 2022
SQL reporting that Just Works. Fast, simple, and confusion-free. Write and share queries in a delightful SQL editor, with AI assistance.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 4 PRs, 29 comments in 5 years 10 months
Contributions summary:Serafeim contributed to the implementation of PDF export functionality, adding a new exporter and template for generating PDF reports. They integrated the `django-xhtml2pdf` library for PDF generation. The user also made updates to the views and templates for the fullscreen query display and added tests for the new PDF exporter. Further contributions involved merging upstream changes and fixing Python 2 compatibility issues.
sql-queriesdjangosql-databasesqlcollab
django/django-localflavor
Mar 2014 - Aug 2018
Country-specific Django helpers, formerly of contrib fame
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits, 3 PRs, 7 comments in 4 years 6 months
Contributions summary:Serafeim primarily focused on enhancing the Django-localflavor project by adding features and improving existing functionality related to Greek-specific forms. They implemented a new field for the Greek Social Security Number (AMKA) and added tests for validation. Additionally, the user addressed a bug in the tax number field to provide better error messages and added tests for other fields. The user also added documentation for the newly added features.
contribpythondjangohelperspython3
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