Democritos Tsellos
Software Engineer III at ExtraHop
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolDemocritos Tsellos is a Software Engineer III based in Seattle with nine years of backend-focused experience building services in Node.js, Python, and SQL. He has progressed through roles at startups and product teams—most recently at ExtraHop after multiple engineering positions at Apptentive—bringing practical experience in shipping reliable server-side systems. Trained originally as a chemical engineer at UIUC, he pairs analytical rigor with a knack for data analysis and creative problem solving to tackle ambiguous technical challenges. Known for translating research-minded thinking into production code, he thrives on extracting insight from data and simplifying complex backend workflows.
9 years of coding experience
5 years of employment as a software developer
University of Illinois Urbana-Champaign
Greek, English
Github Skills (21)
csvtojson9
segment8
producer8
parse7
csv7
kafka6
csv-parser6
golang5
nodejs5
go5
javascript5
jquery-plugin5
pagination4
js4
command-line3
Programming languages (4)
Github contributions (5)
dtsellos03/dtsellos03.github.io
May 2017 - Sep 2022
Portfolio website
Contributions:4 PRs, 38 pushes, 3 branches in 5 years 5 months
cssjavascriptreactreactjs
dtsellos03/chart-my-job-search
May 2019 - Sep 2019
Contributions:8 commits, 4 pushes in 4 months
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