● 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.