Viacheslav Hahara
Chernihiv Oblast, Ukraine
Summary
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SeniorViacheslav Hahara is a Senior Software Engineer based in Kyiv with over 15 years of professional experience building and operating enterprise-grade backend systems, and more than a decade focused on large-scale Java and cloud-native architectures. He has led teams, mentored newcomers, and designed microservices from scratch while driving migrations of monolith/on-prem systems to Kubernetes-based cloud deployments (AWS, EKS, AKS) for products like Talend Cloud. Deeply experienced in the full lifecycle—development, production deployment, monitoring and troubleshooting—he combines strong Java/Spring expertise with data stores and streaming tech such as PostgreSQL, MongoDB, Redis, Kafka and ELK. His background spans telecom, media asset management and social analytics, showing a consistent track record of performance tuning and cross-team API design. Recently he has expanded into applied ML and data skills via Kaggle coursework in Feature Engineering and Machine Learning, hinting at a growing interest in data-driven features and observability. Colleagues rely on him not only for solid engineering but also for pragmatic migrations and onboarding at scale.
11 years of coding experience
Github Skills (93)
python10
vim10
cpp10
ecosystem10
linux10
cmsis10
golang10
tcl10
platformio10
debugging10
container10
vimspector10
gentoo10
java10
go10
Programming languages (11)
Github contributions (5)
gagara/docker-elk-arm64
Jan 2019 - Apr 2020
ELK Docker images for ARM64 (aarch64)
Contributions:15 commits, 2 PRs, 8 pushes in 1 year 2 months
armdocker-imageelk
gagara/gentooverlay
Jan 2017 - Mar 2026
Contributions:31 pushes, 1 branch in 9 years 3 months
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