Senior System Admin

Senior System Administrator — Vertex Cloud Services

Denver, CO | January 2021 – Present

• Architected and migrated 120 legacy on-premise servers to AWS, reducing annual infrastructure hosting costs by 28% ($110,000) while improving website response times by 35%.
• Developed Ansible playbooks and Terraform templates to automate server provisioning, reducing deployment time for new environments from 4 days to 45 minutes.
• Engineered a dual-site backup and disaster recovery strategy for a database cluster storing 14TB of data, reducing the Recovery Time Objective (RTO) from 4 hours to 12 minutes.
• Optimized Linux and Windows Server fleets (450+ instances), maintaining a 99.99% service uptime average and resolving 92% of critical infrastructure alerts within 15 minutes.

System Administrator — Horizon FinTech Solutions

Boulder, CO | September 2015 – December 2020

• Administered a hybrid Active Directory environment supporting 850+ users and 1,200 workstations, reducing credential support tickets by 42% through self-service password integration.
• Configured and monitored network switches, routers, and firewalls across 3 remote office locations, maintaining network availability above 99.95% over a 5-year period.
• Deployed enterprise-wide patching using WSUS and SCCM across 300+ servers, increasing security compliance rating from 78% to 98.5% within a 6-month timeframe.
• Collaborated with the security team to implement SOC 2 compliance controls, remediating 48 high-severity vulnerabilities and improving overall security audit scores by 15%.

Linux (Red Hat, Ubuntu), Windows Server (2016/2019/2022), AWS (EC2, S3, RDS, IAM, VPC), Terraform, Ansible, Active Directory, Group Policy (GPO), VMware vSphere, Docker, Kubernetes, Bash scripting, PowerShell, Python, Network security (Firewalls, VPN, SSL/TLS), Monitoring (Prometheus, Grafana), Backup & Recovery (Veeam, AWS Backup)

Infrastructure as Code Migration

Role: Lead Infrastructure Administrator

Tools: Terraform, Ansible, GitLab CI/CD, AWS

Automated the provisioning of 8 staging and production environments, eliminating configuration drift and reducing configuration-related server errors by 85%.

High-Availability Database Cluster Deployment

Role: System Administrator

Tools: PostgreSQL, Linux RHEL, Keepalived, HAProxy

Built a load-balanced clustering solution for a core transaction database, surviving 3 simulated node failures with zero data loss and less than 5 seconds of failover time.

• Red Hat Certified System Administrator (RHCSA) (2019)
• AWS Certified Solutions Architect – Associate (2022)

• Languages: English (Native)
• Volunteer Work: Technical mentor for Denver non-profit coding bootcamp (2022-present)
• Availability: 3 weeks notice