Yevhen Sylenko
Founder at PleaseTalk.app
Netherlands
Summary
👤
Senior🎓
Top SchoolYevhen Sylenko is a Golang-focused founder and engineer with 10 years of experience building high-performance, real-time systems and developer tools. He has led end-to-end product development as CTO of PleaseTalk.app—building Vue/Nuxt frontends, Go-based messaging, pluggable encryption with key rotation, and open-sourcing a Socket.IO v4 Go library—while also contributing to large-scale chat and notification infrastructure at Stream and Bird. Skilled in event-driven architectures, Docker/Nomad deployments, NATS, DynamoDB and Prometheus-driven observability, he repeatedly reduces operational costs and improves throughput through pragmatic optimizations. A former FinTech senior developer, he created internal Go REST frameworks, CI/CD tooling and automated dependency updates, and mentors teams on best practices. Based in the Netherlands with a background in bioengineering, he brings a disciplined, performance-oriented mindset and a taste for low-level optimizations that often surface in both product and OSS contributions.
10 years of coding experience
9 years of employment as a software developer
NTUU "KPI", RTFБакалавр, Biomedical/Medical Engineering, Бакалавр, Biomedical/Medical Engineering at КПИ
Github Skills (148)
benchmark10
echo10
annotations10
websocket10
expr10
structured-logging10
chat10
evaluator10
osrm10
openstreetmap10
android-messaging10
javascript10
middleware10
offline-maps10
go-redis10
Programming languages (13)
Github contributions (5)
ffenix113/fastxml
Apr 2021 - Jan 2022
Golang fast XML parser
Contributions:54 commits, 1 PR, 13 pushes in 9 months
golangxml-parsingfast-xml-parserxmlxml-parser
ffenix113/zigbee_home
Dec 2023 - Mar 2025
Contributions:4 releases, 13 reviews, 59 PRs in 1 year 3 months
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