Mahesh Kumar Kalasenavaru
Singapore,Singapore
Summary
Experienced professional with focus on infrastructure operations, adept at optimising and ensuring seamless service delivery.
Skilled Cloud Operations Engineer in deploying, managing, and troubleshooting cloud environments to support business objectives.
Proficient in managing cloud infrastructure and optimising system performance while collaborating effectively with cross-functional teams.
Overview
15
15
years of professional experience
4
4
years of post-secondary education
Work History
Cloud Operations Engineer
TDSecurities
Singapore, Singapore
06.2018 - 01.2025
- Overseeing the complete lifecycle of cloud-based applications, which encompasses provisioning, configuration, and troubleshooting within private cloud environments such as VMC and OpenStack
- Addressing issues related to cloud applications, including day-2 operations like server resizing, application deployments across various middleware platforms (JBoss, WebSphere, Tomcat, Spring Boot, etc.), and managing certificate renewals
- Accountable for the management of infrastructure and services operating on the Cloud Service Layer, utilizing platforms like OpenStack and VMC, along with tools such as Terraform, SaltStack, Bitbucket/GitHub, Jenkins, Nexus, Sensu, and orchestration solutions including XLR, XLD, Rundeck, and Cloudify
- Establishing infrastructure components such as firewalls, load balancers, DNS, and Active Directory by collaborating with relevant stakeholders and coordinating with other teams
- Managing administrative tasks, including user and group access management, storage and quota management, operating system patching and upgrades, as well as backups and snapshots
- This also includes overseeing on-premises rack servers using Cisco UCS
- Collaborating with cloud service providers like Rackspace, Dell, and Microsoft to resolve issues and ensure seamless cloud provisioning operations
Hadoop Infrastructure Operations
TDSecurities
Singapore, Singapore
05.2015 - 06.2018
- Develop, implement, and oversee extensive Hadoop data infrastructure
- Ensure the clusters configuration remains in an optimal state through rigorous controls utilizing SaltStack and Ansible for configuration management
- Configure, support, and manage a Cloudera Hadoop deployment consisting of over 400 nodes, accommodating 10PB of data across the environment
- Facilitate the integration of enterprise applications into Hadoop through a clearly defined process for versioning, building, deploying, and managing releases
- Support issues related to HDFS, YARN, HIVE, OOZIE, Encryption, ACLs etc
- Conduct regular hardware replacements for Edge, Master, and Data nodes within the cluster, which includes commissioning and decommissioning while coordinating with multiple vendors
Middleware & Release Engineer
Wipro Technologies
London & Singapore
01.2010 - 05.2015
- Engaged in managing source code using tools such as Subversion and Git
- Streamlined enterprise-wide manual application deployments through automation via custom scripts and the CI/CD tool Jenkins
- Integrated Jenkins with Git for source control, Maven for building, Sonar for code coverage, and JBoss and Tomcat for deployment
- Provided support for middleware applications including WebSphere, JBoss, and Tomcat
- Established a WebSphere environment to ensure seamless application deployments
- Performance tuning for middleware applications in production by analyzing heap and thread dumps
- SSL certificate renewals for web applications accessible both internally and externally
- Monitored and facilitated root cause analysis for recurring issues, ensuring permanent resolutions through problem tickets
- Executed routine disaster recovery operations and monthly server patching
- Oversaw the administration of the enterprise scheduling tool AutoSys
- Configured new machines, users, jobs, and service accounts, and conducted firewall connectivity tests
Education
Computer Science
PESIT
Bangalore, India 12.2005 - 07.2009
Skills
- Enterprise IT Infrastructure
- Cloud environments
- Openstack
- VMWare Cloud
- Azure (Certified Administrator)
- Terraform (Certified Associate)
- SaltStack
- Ansible
- Cloudify
- Rundeck
- Jenkins
- XLRelease
- XLDeploy
- BitBucket
- Nexus
- Sensu
- Zabbix
- Load Balancers
- Palo Alto & NSX Firewalls
- Active Directory
- DNS
- Apache Tomcat
- JBOSS
- WebSphere
- MQ
- Cloudera Hadoop
- Enterprise Scheduler AutoSys
- Cisco UCS
- Docker Containers
- Bash
- Python
Key-Highlights
- Successfully transitioned the Data Ingestion/Extraction platform from manual scripts to an AutoSys scheduler, which included the setup, testing, deployment, and bug resolution for over 20,000 jobs across all environments (Development, Testing, Production).
- Fostered the development of high-performing teams by overseeing recruitment, onboarding, access provisioning, training, and ramp-up processes to ensure the timely delivery of projects.
- Established a global firewall policy across the enterprise, significantly reducing the turnaround time for application teams from several days to zero.
- Minimized dependency on operating system support teams by equipping application teams with the necessary access levels through an enterprise password management (PAM) solution, such as CyberArk.
Timeline
Cloud Operations Engineer
TDSecurities
06.2018 - 01.2025
Hadoop Infrastructure Operations
TDSecurities
05.2015 - 06.2018
Middleware & Release Engineer
Wipro Technologies
01.2010 - 05.2015
Computer Science
PESIT
12.2005 - 07.2009
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