Casimir Me

Infrastructure & Systems Engineer with 15+ years of experience supporting enterprise Windows and Linux, virtualization, hybrid infrastructure, and mission-critical financial environments. Strong expertise in Active Directory, hybrid identity, Hyper-V, VMware, infrastructure resiliency, security controls, and automation using Bash and Ansible, with working knowledge of Azure and IaC principles. Proven record improving platform reliability, operational consistency, and compliance through lifecycle management, troubleshooting, and disaster recovery initiatives.

System Engineer at Git-Gotech (2024-03 – Present)

• Administer and optimize enterprise Red Hat Enterprise Linux (RHEL) environments supporting high-availability production and non-production workloads across virtualized and hybrid infrastructure platforms.
• Lead advanced troubleshooting and root cause analysis across Linux OS, kernel, hardware, virtualization, and application layers, minimizing downtime and improving platform stability.
• Establish and maintain system patching, configuration management, security baselining, and lifecycle governance processes aligned with operational, compliance, and security standards.
• Develop Bash-based automation solutions for health monitoring, log analysis, maintenance operations, and proactive incident detection, improving operational efficiency and reducing manual intervention across repeatable administration tasks.
• Analyze kernel events, distributed application logs, and system performance metrics to identify recurring infrastructure issues and implement long-term remediation strategies.
• Support infrastructure resiliency through failover validation, recovery procedures, infrastructure-as-code principles, and operational continuity initiatives within virtualized enterprise environments.
• Administer Hyper-V virtualization platforms including VM provisioning, performance optimization, storage allocation, and lifecycle management.
• Monitor and optimize virtual host performance, resource utilization, and storage efficiency to ensure platform scalability and availability.
• Collaborate with infrastructure, application, and operations teams to support production readiness, platform reliability, and continuous improvement initiatives.
• Maintain operational documentation, technical standards, and infrastructure runbooks to strengthen governance, knowledge sharing, and supportability.

System Engineer at Diebold Nixdorf (2022-02 – 2024-03)

• Supported mission-critical financial transaction infrastructure across distributed Linux and Windows environments, applying security controls and strict availability and SLA requirements.
• Administered enterprise server and virtualization platforms supporting real-time banking and ATM transaction systems in 24/7 production environments, including platform lifecycle and access management activities.
• Performed advanced infrastructure troubleshooting, hardware diagnostics, firmware lifecycle management, and performance optimization across compute, storage, and virtualized systems.
• Conducted root cause analysis for recurring infrastructure and transaction failures, implementing corrective actions that improved system stability and operational resilience.
• Supported Hyper-V virtualization environments including VM deployment, clustering, high availability configurations, and resource optimization.
• Participated in infrastructure capacity planning, system performance analysis, and virtualization optimization to support business growth, workload scalability, and operational continuity.

General Manager at ATM TECHNOLOGY (2014-08 – 2021-10)

• Directed enterprise infrastructure operations supporting mission-critical financial transaction platforms across Linux, Windows, virtualization, storage, and networking environments.
• Led infrastructure planning, modernization, and operational strategy initiatives to improve platform scalability, resiliency, and long-term supportability.
• Managed data center infrastructure including compute, SAN/NAS storage, virtualization, networking, backup, and disaster recovery platforms within compliance-driven banking environments.
• Designed and implemented disaster recovery (DR), backup, and business continuity strategies, including failover testing and recovery validation aligned with RTO/RPO objectives.
• Established infrastructure governance standards, operational procedures, and technical documentation to improve consistency, audit readiness, and regulatory compliance.
• Drove automation and proactive monitoring initiatives to improve infrastructure reliability, reduce operational overhead, and strengthen incident prevention capabilities.
• Served as senior escalation point for critical infrastructure incidents, leading cross-functional troubleshooting and recovery efforts during high-severity outages.
• Collaborated with vendors and business stakeholders on infrastructure lifecycle planning, risk mitigation, technology evaluation, and operational improvements.
• Oversaw infrastructure performance, capacity planning, and operational continuity for high-availability financial systems supporting 24/7 business operations.
• Mentored technical teams and promoted continuous improvement, accountability, and operational excellence across infrastructure operations.

Infrastructure Engineer at CFAO TECHNOLOGIES (2011-08 – 2014-08)

• Managed enterprise Linux infrastructure supporting business-critical applications within high-availability production environments.
• Performed advanced troubleshooting across compute, storage, networking, and operating system layers to resolve complex infrastructure and application performance issues.
• Supported infrastructure scalability and capacity planning initiatives aligned with evolving business and application demands.
• Collaborated with database teams to optimize SQL-based application performance, system tuning, and resource utilization.
• Developed automation scripts and administrative tooling to improve operational consistency, reduce manual effort, and streamline infrastructure management tasks.
• Monitored infrastructure health, system availability, and performance metrics, proactively identifying operational risks and implementing preventive maintenance strategies.
• Contributed to infrastructure optimization and operational improvement initiatives focused on reliability, performance, and service continuity.

Master's Degree in Technology Sales Management (2012)