- Handled end-to-end release deployments, ensuring seamless transitions from testing to production while maintaining system stability and quality.- Maintained uninterrupted performance of a corporate data warehouse built on Hadoop (HDFS, Hive, Oozie, Apache Airflow, Pentaho DI, Vertica, and PostgreSQL), ensuring high SLA standards.- Optimized data pipelines and ETL frameworks using Apache Airflow, Pentaho DI, and integration tools, enhancing stability, resource… Show more - Handled end-to-end release deployments, ensuring seamless transitions from testing to production while maintaining system stability and quality.- Maintained uninterrupted performance of a corporate data warehouse built on Hadoop (HDFS, Hive, Oozie, Apache Airflow, Pentaho DI, Vertica, and PostgreSQL), ensuring high SLA standards.- Optimized data pipelines and ETL frameworks using Apache Airflow, Pentaho DI, and integration tools, enhancing stability, resource efficiency, and ensuring timely, accurate data delivery for analytics and reporting.- Proactively identified and resolved complex data pipeline issues, implementing long-term solutions and monitoring solutions to minimize recurrence, reduce troubleshooting incidents, and improve system stability.- Collaborated with the team to enhance release execution processes, resulting in faster deployments, improved quality, and a significant reduction in hotfixes.- Configured access policies, resource quotas, and pools using Apache Ranger, Vertica, and PostgreSQL, enhancing system governance and reducing troubleshooting incidents. Show less

- Resolved Functional Issues, diagnosed and fixed errors- Supported сlients and engineers on system functionality and ensured quality through test environment setup and version testing

- Developed SQL queries, T-SQL stored procedures, and SQL Server jobs for efficient database performance- Deployed software packages on test and production servers, including database connections, backup restorations, SQL Agent configurations, backup setups, and implemented mirroring for high availability. - Configured application servers and reporting servers to ensure seamless system functionality

- Ensured seamless operation of company services through continuous monitoring and proactive issue resolution- Managed incidents and problems by localizing issues through log analysis