Aleksei Grishchenko

Senior Java Architect · Team Lead · Enterprise Systems

Java architect with 7+ years in enterprise software and 20+ years of overall engineering experience. I specialize in legacy modernization, monolith decomposition, event-driven architecture, and technical team leadership.

Contacts
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Achievements

  • 7+ years in Java development, technical leadership, and architecture
  • Led engineering teams of more than 10 people
  • Evolved a back-office platform serving 15,000+ stores
  • Helped decompose a ~12,000-class legacy monolith
  • Reduced an enterprise build pipeline from 1.5 hours to 30 minutes
  • Modernized a core stack from Java 7 to Java 17 and Spring Boot

Experience

X5 Jan 2018 — Apr 2023
Senior Java Developer / Team Lead / Architect
  • Evolved a back-office platform serving 15,000+ stores
  • Helped decompose a ~12,000-class legacy monolith into a modular monolith and later microservices
  • Reduced build time from 1.5 hours to 30 minutes and modernized the stack from Java 7 to Java 17 / Spring Boot
  • Designed a Spring Cloud store-update delivery system
  • Moved integrations from RMI to REST and Kafka; developed SAGA and orchestration-based workflows
  • Led engineering teams of more than 10 people
Wellink Company 2016 — 2018
Java Developer
  • Developed the backend of an SLA monitoring and reporting platform
  • Worked with PostgreSQL, Linux deployments, integrations, and network monitoring
ImportFrut Nov 2008 — Sep 2016
System Administrator / Infrastructure Engineer
  • Owned the company's server, network, and virtualization infrastructure
BSKB Vostok Sep 2004 — Nov 2008
Software Engineer (C++ / DSP)
  • Developed embedded C++ systems and contributed to digital signal processing R&D