● Designing and building a data warehouse on Atleta blockchain network.

Collaborate with FE / BE / BA members to release new features and business processes. Responsibilities: Working with PostgreSQL database: development, administration, solving problems of scaling and replication. Monitoring and maintaining AWS instances.

- Development of financial business processes and logic in SQL (Oracle PL/SQL + PostgreSQL). - Looking for best solutions for the integration of financial data between the company and partners (considering data scaling). - Optimization of existing ETL/ELT processes (sources: Oracle, PG, JSON / XML data.) - Creating a new ETL processes for DWH and OLTP/OLAP. - Setting up and optimizing the structure of the database (PG) and its instances ‑ replication, sharding, backups, etc. - Setting access policies and roles for PG instances. - Implementation of an external BI reporting system based on Metabase. - Testing cloud storage solutions (AWS, Data Lake). - Documenting of all processes and existing legacy code in Confluence. - Working on a workflow optimization (was migrated all tasks and their assigners to Jira, helped set up replication and versioning systems in GitLab CI/CD).

- Development of a task and project management system for the government sector (.Net2.5 + PostgreSQL). - Financial exchange market startup in Southeast Asia (I was responsible for the development of the scalable architecture of the PostgreSQL database). - Managed a developers team on a project to migrate a reporting system (MSSQL 2012 + MS Access reports) to a new stack (MSSQL 2016 + DevExpress) for a large engineering company in the USA. - Individual Upwork projects: Car sharing aggregation app (PostgreSQL + JQuery), Alcohol distribution web‑portal (SQL Server + SSIS + SSAS).

Was one of four people in a startup that produces smart warehouse equipment (warehouse management system and voice process control). Responsibilities: firmware development for mobile devices based on WinCE (.NetCF) and the integration of data into the PostgreSQL database via data grabber (Java 8).

- Moved to the IT department from the audit department to participate in the implementation of new business processes. - Was engaged in the development of a trade management system in the retail company (more than 2000 stores), starting from scratch. - Developed own data integration system between Oracle database and PostgreSQL (Java 8 data grabber app). - Became a leading specialist in the company at Oracle Apex area (4.2 migration to 5.0 + writing plugins). - Has grown to the senior developer of my department in one year, trained several new employees (ex‑students) after that.