Saeid Amirmaleky Tabrizi

I managed large-scale (+700TB) Oracle databases for a DW and BI project of MCI (first and largest mobile operator in Iran). By implementing instance and query tuning, I was able to improve ETL daily time by 70%, from 20 to 6 hours. I also utilized Oracle HA features such as Oracle RAC and Oracle Data Guard to ensure high availability and reliability. Additionally, I automated manual tasks using PL/SQL and Linux Bash Scripts and conducted database health and performance checks to optimize overall performance

At Iran Argham, I managed more than 70 OLTP Oracle databases for inter-banking switch (Saba Switch) projects for 4 major banks of Iran. I maintained over-1400-TPS databases, installed and configured Oracle Data Guard for zero downtime HA, and tuned queries to achieve response times of under 3ms. Additionally, I played a key role in migrating critical systems from Microsoft SQL Server to Oracle Database, ensuring high availability, efficiency, and reliability in these vital banking systems.

In my role as a consultant for Pars Korosh Teb, I was responsible for all tasks related to the database, including installation, data modeling, backup and recovery solutions, and infrastructure consulting and engineering. In the final stages of the project, I focused on performance tuning with special attention.

During two years that I worked as a freelance developer at Adak Apps, I provided technical expertise in database administration, programming, and backup/recovery solutions for various clients, including large-scale organizations.

At Hamshahri, I started as a Helpdesk and eventually became an IT specialist responsible for maintaining and troubleshooting various technologies such as DHCP, DNS, Microsoft Active Directory, Microsoft Exchange Server, Microsoft ISA/TMG, CISCO Switches and Routers, Juniper Firewalls, VMware/Hyper-V virtualization, and networks.