Andrey Marinchuk is a seasoned software architect and engineer with 16 years of experience designing and delivering complex CRM, billing, and document-flow systems across Java and SQL ecosystems. He combines deep hands-on expertise in Oracle PL/SQL and PostgreSQL (including DBA tasks and optimization workshops) with a decade of Java development spanning from servlets to large multi-module monoliths and custom BPMN-like engines. Andrey has a proven track record of rescuing and re-architecting legacy systems, integrating scripting (JSR-223/Groovy) and Camunda to empower business analysts and simplify process development. His background in multi-threaded programming (C/C++, Delphi, Java) and breadth across languages and protocols gives him a pragmatic, systems-level view—he prefers to eliminate “magic” by understanding internal mechanics. Based in Poland, he also contributes to knowledge sharing through workshops on common PostgreSQL optimization mistakes and has served as a long-time jury member for the International Mendeleyev Olympiad.
Contributions:3 releases, 2 PRs, 20 pushes in 2 years 11 months
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