At greetgo!, I led development of an HR process automation system covering employee processes from candidate selection and hiring through daily requests, vacation, and dismissal.
I also supported and further developed a high-load project involving extensive PL/pgSQL procedures, SQL query optimization, and multithreading. My work there included troubleshooting and technical support.
For a product collection and resale system, I led work on integrations with two large retail chains in Russia, an Android application, and an online store, alongside CRM, SMS, and internet acquiring integrations.
At Kaspi.kz, I developed Kaspi Manager features, RED/LOAN services, and a BPM Golden Gate Service that replicated IBSO table events to keep BPM data synchronized in real time. I also participated in creating a new Kaspi Pay connection architecture and developed a verification service.

