CHITTARANJAN SANDIRI
Bay Area
Summary
Staff HPC Engineer with extensive experience designing, automating, and managing large-scale compute environments. Expertise in architecting petabyte-scale GPFS clusters and deploying Kubernetes for scientific computing. Focused on optimizing HPC clusters, storage, and networking for enhanced scalability and reliability.
Overview
1
1
Certification
15
15
years of professional experience
Work History
AVP, Systems Engineer
Moody’s Analytics
CA
11.2018 - Current
- Architected and managed petabyte-scale GPFS clusters to enhance model-development workload performance.
- Designed and deployed Kubernetes clusters for containerized scientific computing platforms.
- Built Nutanix hyper-converged environments and migrated existing infrastructure workloads to optimize resource utilization on Nutanix AHV.
- Automated provisioning and monitoring processes using Ansible, Python, and Grafana/Prometheus to streamline operations.
- Implemented performance tuning and high-throughput compute environments for ML and simulation workloads.
Senior Systems Engineer
Cisco Systems Inc.
San Jose
01.2014 - 10.2018
- Deployed and managed OpenStack Nova compute and Swift object storage to enhance cloud infrastructure performance.
- Supported large HPC clusters on Cisco UCS blades with RHEL 5/6, GPFS, and GlusterFS, ensuring reliable high-performance computing environments.
- Led data center migrations and firmware upgrades across UCS and HP servers with zero downtime.
- Deployed Nutanix hyper-converged environments to streamline resource management and improve operational efficiency.
- Automated deployments and configuration management using Puppet and Ansible.
- Optimized distributed storage (HDFS, GPFS) and tuned I/O for high-performance applications.
Site Operations Engineer
eBay Inc.
San Jose
03.2013 - 01.2014
- Managed global infrastructure for Kijiji platform, increasing system uptime and improving HPC throughput.
- Enhanced monitoring and automated recovery scripts using Perl and Shell scripting, streamlining incident response.
- Managed daily operations to ensure efficiency and workflow continuity.
- Collaborated with cross-functional teams to enhance process effectiveness.
- Monitored system performance and addressed issues proactively.
Hadoop/Linux Administrator
AT&T Adworks
09.2012 - 03.2013
- Deployed 60 node Hadoop cluster on AT & T AMP environment, which is the first of its kind in whole AT & T.
- Conducted Proof of Concepts and analyzed statistics to inform production cluster deployment.
- Designed and implemented RAID levels for Hadoop data nodes and managed user access.
- Configured MySQL databases for Hadoop services and established backup protocols.
Unix SysAdmin
Cisco Systems
07.2011 - 08.2012
- Automated Openstack deployments using Puppet.
- Applied Openstack, Open vSwitch (OVS), and KVM tools to troubleshoot, diagnose, and resolve issues affecting Nova nodes and resources, providing 24/7 support.
- Constructed and managed Linux/Solaris HPC and Hadoop environments to facilitate high-performance computing and big data processing.
- Led Openstack migration from Kilo to Mitaka, enhancing system performance and stability.
Education
Master of Science -
Lawrence Technological University
MI, USASkills
- HPC Cluster Design & Management
- Linux (RHEL 7-9, Debian)
- GPFS / Spectrum Scale
- Kubernetes
- Openstack
- Openshift
- Nutanix
- Ansible
- Puppet
- Python
- Shell Automation
- Network & Storage Optimization
- Performance Tuning
- Grafana
- Prometheus
- AWS
- On-Prem HPC
Certification
- Redhat Certified Engineer
- Completed Certification from Rice University in Python Programming
- Certified AZ-400: Microsoft Azure DevOps Engineer
- Nutanix Certified Professional - Multicloud Infrastructure
Awards
- Won many Circle of excellent awards.
- Won best employer for quarter awards in Moodys.
Timeline
AVP, Systems Engineer
Moody’s Analytics
11.2018 - Current
Senior Systems Engineer
Cisco Systems Inc.
01.2014 - 10.2018
Site Operations Engineer
eBay Inc.
03.2013 - 01.2014
Hadoop/Linux Administrator
AT&T Adworks
09.2012 - 03.2013
Unix SysAdmin
Cisco Systems
07.2011 - 08.2012
Master of Science -
Lawrence Technological University