David Gunnarsson
Senior Software Engineer at University of Vienna
Austria
Summary
🤩
RockstarDavid Gunnarsson is a Senior Software Engineer with 11 years of experience building scalable web systems, currently designing secure encrypted research data storage and modernized web services at the University of Vienna. A co-founder and former development lead at Safing, he scaled a Rails payment backend, implemented diverse payment methods, and helped grow an open-source community into one of the fastest-growing projects in 2022. He has deep Rails experience from consumer-scale work at Platogo—optimizing queries, building a data warehouse, and shipping timezone-aware scheduling for global campaigns. Entrepreneurial and user-focused, he blends hands-on engineering, mentorship, and product instincts from seed-stage pitching to production operations. Fluent in Swiss German, Swedish and English, he pairs a cultural curiosity and musical interest with a knack for elegant, simple solutions to complex problems. Outside work he describes himself as a builder, adventurer and philosopher, signaling a practical yet reflective approach to engineering.
11 years of coding experience
8 years of employment as a software developer
German, English, Swedish
Stackoverflow
8,260reputation
573kreached
145answers
34questions
filtering
top-5%
ruby
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activerecord
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sqlite
top-5%
ruby-on-rails
top-1%
Github Skills (93)
mass10
firewall10
mvc10
ruby10
security10
dns10
activerecord10
encryption10
ruby-on-rails10
golang10
html10
crud10
surveillance10
decentralization10
rails10
Programming languages (9)
Github contributions (5)
safing/stamp.community
Nov 2017 - Sep 2019
Contributions:3 releases, 778 commits, 107 PRs in 1 year 11 months
safing/docs
Oct 2018 - Jan 2023
https://docs.safing.io
Contributions:42 reviews, 299 commits, 91 PRs in 4 years 3 months
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