Sudhirkumar Seelam

Designed and implemented enterprise infrastructure solutions in collaboration with clients and engineering teams.

Executed centralized Syslog relay infrastructure, enhancing security visibility and log management.

Led CentOS to RHEL migration, ensuring minimal impact on production.

Upgraded RHEL 7 to RHEL 8/9 across all environments.

Applied CIS benchmarks for various Linux distributions to strengthen security posture.

Developed LDAP integration with multiple Active Directory domains for streamlined authentication.

Secured SMTP traffic, optimizing application mail flow efficiency.

Provided L2 support for CI/CD pipelines, troubleshooting failures and boosting deployment reliability.

• Integrated Trilio Kubernetes backups with customer cloud environments to strengthen data security.
  Administered VMware vSphere infrastructure, ensuring system stability and optimal performance.
  Provisioned Azure VMs, storage, and DNS for development and testing.
  Managed MariaDB Galera Cluster, optimizing for high availability and performance.
  Supported and troubleshot Kubernetes clusters and containerized workloads for operational efficiency.
  Diagnosed Docker-based private cloud issues while analyzing hypervisor logs for insights.
  Implemented patching through manual processes and Ansible automation to enhance reliability.

• Procured OVH cloud servers and provisioned systems according to development requirements.
  Installed and managed RHEL/CentOS while handling Linux and Solaris patching.
  Executed LVM and SAN migrations, along with kernel tuning and performance optimization.
  Supported dockerized RHOSP and Canonical OpenStack utilizing JUJU/MAAS.
  Applied working knowledge of Docker and Kubernetes for container management.
  Managed networking components including pfSense, DNS, and NFS for seamless operations.
  Coordinated vendor relations, ensured security compliance, and utilized monitoring tools.

• Supported enterprise environments as Linux Administrator with emphasis on Red Hat Linux.
  Executed compliance patching, firmware updates, kernel tuning, and system performance optimization.
  Administered Veritas Cluster Manager and Volume Manager for LVM, filesystem, and disk management.
  Managed virtual and physical servers on OVM blade infrastructure utilizing iLO.
  Collaborated with data center teams and vendors to resolve issues effectively.
  Worked with application and storage teams to install system software and monitoring agents.

Monitored system performance using vmstat and iostat to identify potential issues.
Analyzed logs and managed disk and memory problems to maintain system integrity.
Performed patching, package management, and service monitoring during scheduled maintenance.
Coordinated incident response for P1 issues, ensuring resolution through Remedy.
Handled job scheduling, reruns, and file restores to support daily operations.
Ensured compliance with SLAs while maintaining overall system stability.

• Installed and supported Linux systems (RHEL/CentOS), managing users, permissions, services, and file systems.
  Monitored system health, CPU, memory, and disk performance; resolved incidents within SLAs.
  Executed package management, patching, service restarts, and ensured network connectivity.
  Supported LVM monitoring and documented issues for coordination with application teams.