Senior DevOps / System Administrator Profile

Senior DevOps and System Administrator with extensive experience in designing, operating, and maintaining secure, high-availability Linux-based infrastructures. Strong background in system administration, CI/CD automation, containerization, and on-premise environments. Proven ability to stabilize critical production systems, lead infrastructure migrations, and enforce operational best practices without reliance on cloud architecture roles.

Core Competencies

• Linux System Administration (Ubuntu, CentOS)
• DevOps Practices & CI/CD
• Git & GitLab (Self-Hosted & Managed)
• Docker & Containerized Deployments
• Infrastructure Monitoring & Reliability
• Security Hardening & Patch Management
• Backup, Recovery & Disaster Preparedness
• On-Premise Infrastructure & Virtualization

Technical Skills

Operating Systems

• Linux (Ubuntu LTS, CentOS)
• Advanced system tuning, service management, and troubleshooting

DevOps & CI/CD

• Designing and maintaining CI/CD pipelines using GitLab CI
• Pipeline optimization, artifact management, and environment segregation (dev / test / prod)
• Automation of build, test, and deployment workflows

Version Control

• Git (branching strategies, release management, access control)
• GitLab administration (repositories, runners, permissions, backups)

Containerization

• Docker (Dockerfiles, images, volumes, networks)
• Container lifecycle management
• Docker-based application deployment and isolation

System Administration

• Server provisioning and lifecycle management
• User and access management
• Performance tuning and capacity planning
• Log management and root-cause analysis

Virtualization & Infrastructure

• VMware ESXi
• VM management, datastore troubleshooting, and resource optimization
• On-premise infrastructure operations

Monitoring & Observability

• Prometheus-based monitoring
• Service health checks, alerting, and performance metrics
• Proactive incident detection and response

Security

• OS and application-level hardening
• Patch management and vulnerability mitigation
• Secure access control and service isolation

Backup & Recovery

• Backup strategy design and validation
• Experience with Veeam and alternative backup mechanisms
• Disaster recovery planning and execution

Professional Strengths

• Strong ownership of production systems and service availability
• Methodical approach to incident response and risk mitigation
• Ability to operate under high-pressure, business-critical environments
• Close collaboration with development teams to ensure operational stability
• Clear documentation and infrastructure standardization

Role Focus (Explicit Scope)

• DevOps and System Administration
• On-premise and hybrid environments
• Infrastructure reliability and automation