Rakesh Kumar Jha

Managed over 50 Linux servers, including performance tuning, patching, and security hardening.

• Administered enterprise-wide Linux environments to ensure system availability and performance.
• Designed and maintained Kubernetes clusters to support microservices architecture in hybrid cloud environments.
• Deployed applications on Kubernetes using Prometheus-Grafana for monitoring and performance analysis.
• Implemented CI/CD pipelines with Jenkins and GitLab CI to automate build and deployment processes.
• Automated infrastructure provisioning through Ansible and Shell scripting, enhancing operational efficiency.
• Configured core network services, including DNS, DHCP, FTP, and VPN for optimal connectivity.
• Led network redesign projects to enhance segmentation and security with Cisco and Palo Alto devices.

Infrastructure & System Administration Kubernetes & Containerization DevOps & Automation Networking & Security Monitoring & Troubleshooting

• Managed over 50+ Linux servers (RHEL, CentOS, Ubuntu) including performance tuning, patching, and security hardening.
• Administered enterprise-wide Linux environments with a focus on system availability, backups, and performance.
• Installed, tested, and evaluated new systems, applications, and patches for production readiness.
• Configured and maintained system hardware, software, and network components.
• Oversaw storage management, data migration, backup strategies, and drive replacements.
• Created and managed user accounts, access rights, permissions, and passwords.
• Set up and enforced network policies and procedures for user access and system integrity.
• Designed, implemented, and maintained Kubernetes clusters (on-prem and hybrid cloud) to support microservices architecture.
• Performed container orchestration using Docker and Kubernetes, including Helm-based deployments and service mesh setup.
• Deployed and monitored applications on Kubernetes using the Prometheus-Grafana stack.
• Collaborated with security teams to implement PodSecurityPolicies and Kubernetes Network Policies.
• Implemented CI/CD pipelines using Jenkins and GitLab CI for automated build, test, and deployment processes.
• Automated infrastructure provisioning and configuration using Ansible and Shell scripting.
• Developed Bash scripts to automate routine administrative tasks, improving operational efficiency.
• Worked closely with development teams to deploy applications using containers and develop internal DevOps tools.
• Configured core network services: DNS, DHCP, FTP, NFS, VPN.
• Troubleshot routing, firewall rules (iptables, firewalld), and secure access (SSH, VPN).
• Managed switch/router configurations, subnetting, VLAN setup, and VPN tunnels.
• Led network infrastructure redesign projects to improve segmentation and security using Cisco and Palo Alto devices.
• Implemented security protocols to safeguard sensitive data and manage user access effectively.
• Monitored network performance and proposed necessary adjustments to maintain service levels.
• Installed and configured Nagios/Zabbix for proactive monitoring of server and network health.
• Configured Nginx/Apache, managed DNS zones (BIND), and secured remote server access.
• Troubleshot application and infrastructure issues and provided technical support to end-users.

• Monitored system uptime, logs, and performance tuning.
• Configured NFS, SSH, and host-based access security.
• Developed Bash scripts for automation and backup tasks.
• Managed network infrastructure for efficient communication across all departments.
• Coordinated system upgrades to enhance network capacity and reliability.
• Monitored network performance metrics to identify areas for improvement.
• Managed user accounts on active directory and other authentication systems.
• Administered Linux servers to ensure optimal performance and reliability.
• Monitored system logs for security incidents and performance issues.
• Collaborated with development teams to deploy applications in Linux environments.
• Troubleshot hardware and software issues to maintain system uptime.
• Provided technical support and training for end-users on Linux systems.
• Performed patch, update, security scanning and configuration to meet OS performance mandates.
• Configured and updated Linux servers with latest releases and patches.
• Developed scripts for automation of system administration tasks using Bash and yml languages.

• Managed Linux servers and ensured system stability and performance.
• Implemented security protocols to protect sensitive data and systems.
• Assisted other teams in troubleshooting complex issues involving multiple subsystems.
• Established machine security protocols and set up user accounts.
• Provided technical support for users on various aspects of using Linux systems.
• Managed user accounts according to company policies and procedures.
• Implemented security measures such as firewalls, patch management, intrusion detection, prevention systems and authentication protocols.
• Oversaw storage management, data migration, backups and drive replacements.
• Managed network infrastructure and ensured system availability and performance.
• Configured and maintained routers, switches, and firewalls for optimal security.

• Provisioned and maintained telecom infrastructure via Metasolve M6.
• Ensured patching and support for Linux systems.
• Configured routers, switches, firewalls and other hardware to deploy and manage LAN, WAN and wireless networks.
• Administered network policies, procedures, and standards to align with organizational goals and security requirements.
• Optimized network performance through ongoing tuning, hardware upgrades, and bandwidth optimization techniques.

• Managed IT equipment, antivirus deployment, and user support.
• Completed day-to-day duties accurately and efficiently.
• Worked successfully with diverse group of coworkers to accomplish goals and address issues related to our products and services.
• Promoted high customer satisfaction by resolving problems with knowledgeable and friendly service.
• Provided excellent service and attention to customers when face-to-face or through phone conversations.
• Utilized advanced technical skills and expertise to troubleshoot complex problems and implement solutions.

• Led Vodafone LTE rollouts in Delhi; managed installation teams and documentation.
• Coordinated project schedules and timelines to ensure on-time delivery.
• Facilitated communication between team members and stakeholders for project updates.
• Monitored project budgets and tracked expenses throughout the lifecycle.
• Conducted regular meetings to address challenges and align team efforts.
• Generated weekly, monthly, quarterly reports summarizing key performance indicators.