Konstantin Filtschew
Senior Software Engineer at SymProject GmbH
Frankfurt Rhine-Main Metropolitan Area Germany
Summary
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Rockstar🎓
Top SchoolKonstantin Filtschew is a Senior Software Engineer with 12 years of hands-on experience building and modernizing web systems, primarily with Ruby and Ruby on Rails, and currently contributing at SymProject in the Frankfurt Rhine-Main area. He has led development and quality/security audits across industries—from media and logistics to procurement and consumer Wi‑Fi—balancing feature delivery with operational robustness. As a freelancer and lead developer he has rebuilt legacy platforms, designed procurement analytics, and shipped hybrid mobile/web products that prioritize user engagement. Konstantin invests in open source and is building MailMum, a tool to support email administrators, reflecting a focus on practical infra and admin tooling beyond typical application work. His background blends deep application development with security-minded lifecycle practices, making him adept at turning complex data and integration challenges into maintainable systems.
12 years of coding experience
20 years of employment as a software developer
Master of Science (M.Sc.), Informationstechnologie, Master of Science (M.Sc.), Informationstechnologie at Darmstadt University of TechnologyBachelor of Science (B.Sc.), Informatik, Bachelor of Science (B.Sc.), Informatik at Technische Universität Darmstadt / Technical University Darmstadt
English, Russian, French, German
Stackoverflow
4,750reputation
620kreached
51answers
2questions
ruby
top-5%
ruby-on-rails
top-5%
heroku
top-1%
audio
top-5%
amazon-s3
top-5%
activerecord
top-5%
Github Skills (123)
mvc10
stimulusjs10
hotwire10
ruby10
heroku10
activerecord10
ruby-on-rails10
single-page10
turbo10
html10
rails10
rails-app10
sprockets10
theme-development10
turbolinks10
Programming languages (9)
Github contributions (5)
fa11enangel/racing-capybara-puma-chrome-for-testing
Jan 2020 - Oct 2022
Contributions:12 pushes, 1 branch, 1 comment in 2 years 8 months
fa11enangel/mail
Oct 2020 - Feb 2023
A Really Ruby Mail Library
Contributions:9 pushes, 2 branches in 2 years 3 months
mailsmtpemailrubyreally
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