# Saravanan Madhavan > Staff Software Engineer at Walmart Global Tech| Database Engineer | Data Engineering | Multi-Cloud PaaS Database Solutions Location: San Francisco Bay Area, United States Profile: https://flows.cv/saravananmadhavan I lead teams that prioritize customer needs while optimizing the design, delivery, administration, and support of advanced database technologies. Throughout my career, I have directed several initiatives to revamp business operations. To do so I utilize proven methodologies to reinforce data security and integrity, eliminate critical errors, and enhance system performance. For instance, I collaborated with SQL developers to implement table partitioning and accelerate data reporting by 7x. I complement my ability to streamline database procedures with a superlative regard for customer service. As an example, I improved client satisfaction by prioritizing their requirements for data security. I initiated Kerberos, data masking, and data subsetting to automate the user security process and refine user credential handling, mitigating ~60 monthly errors as a result. SELECTED ACCOMPLISHMENTS: - Led 40TB data migration with 0 downtime by using Automatic Storage Management, prompting license optimization. - Drove 30% cost savings by consolidating underutilized HP-UX and Windows servers to reduce total servers required. SELF-STARTED BIG DATA PROJECTS: • Spin up Hadoop cluster in AWS and Install, Configure, Manage, Secure and Debug Big Data ecosystems. Tools: Cloudera CDH, HDFS • Extracted data from Oracle database into Hadoop File System, Transformed using Hive and Loaded query results back to Oracle Database from HDFS. Tools: Sqoop, Hive • Migrated data from Oracle/MySQL to Distributed NoSQL databases like Cassandra and HBase configured in CentOS clustered servers. Tools: DataStax/Apache Sqoop, Csqlh, HDFS, JDBC Driver If you’d like to work with someone who guarantees customer success by conducting performance tuning, ensuring high availability, and executing preventive disaster recovery solutions, I can be emailed at saravanan.m22@gmail.com. Specialties: Database Management, Big Data Management, Distributed system, Database Efficiency Optimization, Operational Improvement, Backup & Recovery , Database Migration & Security, Disaster Recovery Techniques, Problem Detection & Mitigation, High Availability, Team Management & Coaching. ## Work Experience ### Staff Software Engineer @ Walmart Global Tech Jan 2025 – Present ### Senior Software Engineer @ Walmart Global Tech Jan 2019 – Present | Sunnyvale, California, United States ### Database Team Lead @ HCL Technologies (Infrastructure Services Division) Jan 2011 – Jan 2019 | San Francisco Bay Area Clients: Stanford Healthcare; Ann Inc (Retail). I help HCL Technologies retain its reputation for a culture of innovation and customer focus by facilitating client-centric design of technologies that include cloud, automation, and data security solutions. PROMOTED FROM: Consultant (01/2014 – Present), Associate Consultant (08/2012 – 01/2014), Sr. Systems Specialist (08/2011 – 08/2012) I supervised a 7-member team to assure that my client’s ETL data loads 150TB database is at its peak performance while devising strategies to reduce operational costs. In one instance, I initiated a rolling upgrade to establish a disaster recovery site for cluster nodes, reducing business downtime from 8 to 2 hours. I also took several measures to recover lost or damaged data caused by unanticipated incidents. For example, I recovered 1 TB of data within 2 hours after a human error and took complete ownership. Following the event, I placed strict data management controls, redefined database access levels, and automated monotonous tasks. While undertaking process improvement projects to streamline storage, reduce license costs, and create recovery strategies, I placed great emphasis on the customers’ input and worked on multiple solution iterations until the client was pleased, resulting in 100% customer satisfaction. KEY ACCOMPLISHMENTS: - Improved DBMS performance by automating data management and initiating table reorganization and fragmentation. - Led SAP database upgrade by furthering a 360-degree feedback and coherently fulfilling prerequisites. - Improved database performance by automating management and instituting table reorganization and fragmentation. Key Skills: Data Security & Disaster Recovery, Data Migration & Backup, Automatic Storage Management (ASM), Server Consolidation, Volumetric Analysis,Process Automation, Table Reorganization & Fragmentation,360-Degree Feedback, Database Snapshot Strategies, RPO & RTO Management,Error Troubleshooting, Query Optimization. ### Senior Oracle Database Administrator @ CSS Corp Jan 2009 – Jan 2011 | Chennai Area, India Client: Blackboard Inc. (Education Technology Industry) One of my major contributions to this software company was administering the parallel upgrade of 2- and 4-node RACs consisting of 2K+ databases. I implemented transportable tablespaces and mediated all team issues as a shift lead by working within a restricted downtime to assure no negative impacts occurred to daily business processes. Another challenge I faced at Blackboard was system outages due to memory over utilized. I identified the problem and worked with the system admin and database team to optimize memory utilization by using Linux HugePages. In addition, I was acknowledged by my clients for implementing snapshot strategies that prompted 0 data loss while enabling post-change database recovery within 60 minutes. Key Skills: Database Upgrade Management, Transportable Tablespaces, Real Application Cluster (RAC) Management, Staff Oversight, Database Recovery, Problem Troubleshooting, Linux HugePages, Memory Optimization, Multi-Functional Collaboration, Client Satisfaction, Data Snapshot Techniques. ### Associate Database Administrator @ Softenger (India) Pvt. Ltd. Jan 2008 – Jan 2009 | Chennai Area, India I oversaw data replication, user access control, and customer issues as the first point of contact to ensure that Softenger’s enterprise application development and support services were in line with global standards. My primary accomplishment at this company was the institution of a 2-node RAC cluster in collaboration with a vendor. In addition, I received 2 excellence awards for exemplary work and provision of best services. Key Skills: Database Backup, User Authentication, Issue Troubleshooting, Customer Relationship Management, Vendor Management, RAC Administration. ### Support Engineer @ ANMOL SOLUTIONS PVT. LTD. Jan 2006 – Jan 2008 At Anmol Solutions, I facilitated business escalation by laying the basis for support services extension to 110 locations. I implemented the first-ever RAC for the company by setting up the application and database servers, networking hardware, and lock management process as well as mentoring staff on the new system. Key Skills: RAC Implementation, Staff Oversight & Training, Website Launch Management, Application & Database Server Supervision, Business Development Facilitation. ## Education ### BE – Bachelors of Engineering in Electronics and Communications Engineering Anna University, Vickram College of Engineering ## Contact & Social - LinkedIn: https://linkedin.com/in/saravanan-madhavan --- Source: https://flows.cv/saravananmadhavan JSON Resume: https://flows.cv/saravananmadhavan/resume.json Last updated: 2026-04-12