Portfolio

Professional contracts and long-term engagements — enterprise systems, telecom platforms, and email infrastructure.

CloudBees CD/RO

CloudBees CD/RO

Senior Software Engineer / Plugin Developer · Nov 2018 — May 2019

Developed enterprise DevOps platform components for CloudBees CD/RO serving Fortune 500 clients. Created 50+ reusable plugins in Java, Groovy, and Perl, reducing code duplication by 60% and achieving 95% automated test coverage.

JavaGroovyGoPerlDocker
PortaSwitch / PortaOne

PortaSwitch / PortaOne

Team Lead / Senior Backend Developer · Mar 2013 — Mar 2018

Led Kyiv development team for 5+ years building core components for PortaSwitch BSS, Billing, and Softswitch platform serving MNO/MVNO/MVNE, cable, VoIP, and IoT providers. Architected billing solutions with 99.9% system reliability.

PerlLinuxMySQLPostgreSQLVoIP
Mail.UA

Mail.UA

System Architect / Head of System Development Department · Jun 2011 — Jun 2014

Architected complete redesign of enterprise email platform mail.ua serving 1M+ active users. Managed 20+ backend engineers through 3-year platform transformation, transitioning from Waterfall to Agile with automated testing pipelines.

PerlShell ScriptingMySQLPostgreSQLLinux