Thanos Karagiannis
Full Stack Developer at causaly
Athens, Attica, Greece
Summary
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RockstarThanos Karagiannis is a Staff Software Application Engineer based in Athens with nearly a decade of experience building JavaScript and TypeScript web applications, currently helping scale Causaly’s biomedical search platform. He brings full-stack expertise across React, Node, GraphQL and Elasticsearch, and has progressed from hands-on development to technical leadership roles such as Lead Engineer and frontend chapter lead. Thanos has a strong track record in architecting performant, customer-facing products for both startups and large enterprises, including banking and telecom systems. He contributes to the local tech community as a board member of GreeceJS, reflecting a commitment to mentorship and ecosystem growth. A practical problem-solver, he’s often owned end-to-end projects—from requirements and architecture to deployment and support—bringing product-minded engineering to complex domains.
9 years of coding experience
Github Skills (63)
visual-studio-code10
javascript10
type-inference10
schema-validation10
electron10
agentic10
windows10
syntax-highlighter10
typescript10
linux10
bash10
editor10
validation-error10
zero-dependencies10
js10
Programming languages (5)
Github contributions (5)
causaly/jest-fp-ts-matchers
Jan 2023 - Oct 2025
Collection of monad matchers to ease testing with Jest
Contributions:2 reviews, 2 PRs, 4 pushes in 2 years 9 months
testingfp-tsjest
thanoskrg/lifxjs
Mar 2020 - Jun 2022
A light-weight JavaScript library for using LIFX HTTP API.
Contributions:7 releases, 31 commits, 14 PRs in 2 years 3 months
javascriptlifx
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