Kostiantyn Hantsov
Staff Software Engineer at Backlight
Stockholm, Stockholm County, Sweden
Summary
👤
Senior🎓
Top SchoolKostiantyn Hantsov is a Staff Software Engineer with 12 years of experience building scalable backend systems, currently leading platform work at Backlight in Stockholm. He is proficient in Python and Go and routinely architects services using Flask, aiohttp, Cassandra, PostgreSQL, Redis, Elasticsearch, Docker and Kubernetes, while also shipping front-end features with React and Redux. His career spans media and cloud-focused platforms (iconik.io, Cantemo) where he solved complex distributed-data and integration challenges. Constantly exploring new paradigms, he experiments with languages and systems like Elm, Clojure, Haskell and CockroachDB in his spare time, which informs pragmatic choices in production. Colleagues describe him as a hands-on engineer who pairs deep systems thinking with steady delivery of reliable, observable services.
13 years of coding experience
17 years of employment as a software developer
Master’s Degree Computerized Systems Automatics and Managment, Master’s Degree Computerized Systems Automatics and Managment at PHEI Institute of Economics and New Technologies
English, Russian, Ukrainian, Swedish
Github Skills (31)
python-asyncio10
gino10
sqlalchemy10
asyncpg10
sanic9
python8
orm8
python-web8
asgi8
nunjucks8
server7
sublime-text7
asyncio7
api-server7
http-server7
Programming languages (3)
Github contributions (5)
kgantsov/uptime
Sep 2022 - Mar 2026
Contributions:107 pushes, 1 branch in 3 years 6 months
kgantsov/limiter
Sep 2018 - Jun 2025
A rate limiter service that has http and redis interfaces
Contributions:3 releases, 6 PRs, 105 pushes in 6 years 10 months
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