Mykhailo Kozik
Senior Software Engineer at Relay Payments
Kyiv, Ukraine
Summary
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Senior🎓
Top SchoolMykhailo Kozik is a Senior Software Engineer and technical leader from Kyiv with over 15 years of experience designing and delivering resilient, high-throughput systems across retail, telecom and analytics domains. He has led architecture and large engineering teams to build integration platforms, multitenant services and observability tools—successfully integrating with major grocery retailers and reducing cloud spend by hundreds of thousands per year. Hands-on across JVM and functional stacks (Clojure/Java) and distributed storage (Cassandra), he designs DSLs, transformation pipelines and event-processing fabrics that simplify complex business flows. Known for preferring simplicity, he balances pragmatic engineering with strategic roadmaps, regular design reviews and automation that keeps models and diagrams up to date. Beyond coding, he’s driven cross-cutting initiatives like SSO/RBAC migrations, anomaly detection dashboards and tooling to surface unstable components. His background in applied mathematics underpins a data-driven approach to system design and optimization.
15 years of coding experience
12 years of employment as a software developer
NTUU "KPI"
English, Ukrainian, Russian
Github Skills (136)
static-analysis9
slug9
xml-document9
command-line-tool9
spring9
travis-ci9
sun9
java9
spring-boot9
conventions9
babashka8
ant8
rocks8
avro8
slugify8
Programming languages (7)
Github contributions (5)
mishadoff/littlepot
Jul 2015 - Oct 2015
Contributions:27 commits, 24 pushes, 1 branch in 3 months
split-brain/poetree
Dec 2015 - Dec 2015
Contributions:45 commits, 32 pushes, 1 branch in 1 day
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