Sayantan Chakraborty
Oracle DBA & Cloud Infrastructure Specialist with 15+ years in Data Management
- Resolved 15+ critical incidents in a 125 TB environment with 456 databases, ensuring high availability.
- Led enterprise Oracle Linux migration across multiple production servers, facilitating advanced database features.
- Designed and executed database upgrade workflows from Oracle 12c to 19c, improving operational efficiency by 35%.
Oracle Database Administration
Expert
Managed complex Oracle environments, including RAC, Data Guard, and RMAN frameworks, ensuring performance and uptime.
Cloud Infrastructure & Automation
Advanced
Automated cloud deployments with Terraform and Ansible across AWS and Google Cloud platforms for scalable solutions.
Linux System Administration
Advanced
Administered multiple Linux platforms (Red Hat, Oracle Linux, Ubuntu) supporting critical database operations.
Disaster Recovery & High Availability
Advanced
Implemented and maintained DR strategies using Data Guard, RAC, and backup/recovery frameworks, ensuring system resilience.
Migration & Performance Tuning
Intermediate
Led database migrations and optimized performance through tuning and capacity planning for high-demand environments.
Languages
English
Native
Bengali
Professional Proficiency
Hindi
Conversational
Apr 2025 - Jan 2026
Lead II Cloud Infrastructure Services
US Technology International Pvt Ltd
Troubleshooted and resolved complex Oracle GoldenGate Extended Architecture for Grid/Cluster Integration & Bi-Directional replication, Oracle RAC, Oracle Datagurd issues, facilitating advanced features like cross-instance recovery and distributed transactions; personally addressed and...
Apr 2024 - Apr 2025
Senior Subject Matter Expert
Ndedge Informatics Pvt Ltd
Orchestrated enterprise-wide Oracle Linux migration (7.9 to 8.2) across 1+ production servers in VM environment for Oracle 19c migration, for facilitating advanced features., Engineered comprehensive RMAN backup/recovery framework that reduced system downtime by 5%.
Aug 2023 - Mar 2024
Senior Project Scientist
Indian Institute of Technology Delhi
Architected containerized Linux infrastructure supporting 10+ research projects using Docker., Administered MySQL databases serving 50+ daily users with 99.9% availability., Modernized network services (DNS, DHCP, NAS, NFS), enhancing reliability by 40%., Automated routine maintenance tasks through...
Apr 2023 - Aug 2023
Project Consultant
National Institute of Educational Planning & Administration
Developed and launched institutional website, increasing online engagement by 20%., Optimized NIC Cloud infrastructure for 200+ concurrent users, reducing costs by 20%., Automated routine maintenance tasks through Bash scripting, saving 15+ hours weekly.
Oct 2018 - Mar 2023
Principal Consultant - Infrastructure Sys Engineer
Ndedge Informatics Pvt Ltd
Managed enterprise Oracle database environments for healthcare clients, ensuring performance and stability of 15+ critical production systems as business owner., Diagnosed and resolved complex data replication and extraction failures in Oracle GoldenGate environments., Optimized database...
May 2017 - Jul 2017
Oracle EBS Consultant
Wizertech Informatics Pvt Ltd
Executed Oracle EBS upgrade for Kolkata Metrorailway Corporation serving 5T+ internal employee., Integrated GST compliance module for Adamas University ensuring regulatory adherence., Provided expert DBA support for Renata Ltd through KPMG partnership., Optimized Exadata storage performance through...
Sep 2016 - Feb 2017
Oracle Database Administrator
Magna Infotech
Rectified system issues for telecom databases supporting Ericsson’s subscriber network., Maintained Oracle 12cR1 with Data Guard ensuring 24/7 availability.
Jun 2016 - Aug 2016
Software Engineer
Skilliantech India Pvt Ltd
Facilitated Srei Finance database migration to TCL Cloud (Oracle EBS R12)., Vulnerability management., Managed the full lifecycle of a mission-critical 5TB Exadata X4-2 platform supporting Oracle Database 11gR2, implementing scalable storage strategies to accommodate 40% annual data growth.
Jun 2015 - Nov 2015
Database Administrator
Collebra Technologies Pvt Ltd
Administered Linux-based Oracle databases for IBM India’s internal systems.
Jul 2013 - Jul 2014
Assistant Officer
BIL Infratech Ltd
Optimized Oracle EBS R12 performance on Oracle 11gR1/R2 with Data Guard., Configuring DR during DR activities., Optimized Oracle 11gR1/R2 EBS with Data Guard performance using AWR/ASH, SQL profiles, and partitioning, cutting batch runtime from 6 h to 2 h.
Maulana Abul Kalam Azad University of Technology
Master in Computer Applications (MCA)
Completed 2009
University of Calcutta
Bachelor of Science
Completed 2006
West Bengal Council of Higher Secondary Education
Higher Secondary (Class XII)
Completed 2001
West Bengal Board of Secondary Education
Secondary (Class X)
1999
Sr oracle DBA
Worked as sr sme oracles dba
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