Mark Hamburger

DevOps & Technical Implementation

[email protected] | 719.453.8648 | Colorado Springs, CO | GitHub

Summary

Results-oriented IT professional transitioning from field engineering to DevOps and Technical Implementation. Leverages 15+ years of diagnostic and troubleshooting experience to build resilient, self-healing infrastructure. Proven ability to design production-grade Kubernetes clusters, automate VM provisioning pipelines, and implement GitOps workflows using Flux CD and Ansible. Passionate about infrastructure automation and solving complex integration challenges.

Technical Skills

  • Container Orchestration: Kubernetes (K3s), Flux CD (GitOps), Helm, Kustomize, Docker, MetalLB
  • Infrastructure as Code: Packer (Golden Images), govc (vSphere CLI), Cloud-init, Terraform concepts
  • CI/CD & Automation: GitHub Actions, Bash Scripting, YAML pipelines, CronJobs, Webhooks (n8n)
  • Observability: Prometheus, Grafana, AlertManager, Node Exporter, ServiceMonitors
  • Security & Identity: Authentik (SSO/OAuth2), Cert-Manager (Let's Encrypt), Sealed Secrets (Encryption at rest), RBAC
  • Storage & Networking: TrueNAS (NFS/iSCSI), Traefik (Ingress Controller), Cloudflare DNS, TCP/IP Troubleshooting, Cisco Meraki
  • Operating Systems: Linux (Fedora, Alpine), Windows Server (2003-2016), Windows 10/11

Technical Projects

Kubernetes Infrastructure & Automation Platform

Lead Architect

Designed and deployed a production-ready K3s Kubernetes cluster managing 40+ microservices using GitOps principles.

  • Automated Provisioning Pipeline: Engineered a VM provisioning workflow using Packer to build immutable Fedora images and govc for on-demand node scaling on vSphere. Reduced node deployment time from hours to minutes by automating OS configuration and K3s bootstrapping.
  • GitOps Workflow: Implemented Flux CD to synchronize cluster state with a Git repository, ensuring version control and automatic reconciliation for all workloads including Traefik, Cert-Manager, and database operators.
  • Observability Stack: Deployed a full monitoring stack using Prometheus and Grafana with custom dashboards to track cluster health, resource usage, and automation job status.
  • Identity Management: Integrated Authentik to provide Single Sign-On (SSO) and OAuth2 protection for all internal services, securing access via Traefik ingress middlewares.
  • Security & Secrets: Enforced security best practices by implementing Sealed Secrets to encrypt sensitive credentials in the public repository and automated TLS certificate renewal via Cert-Manager and Cloudflare DNS.

Professional Experience

Field Technician II

CompuCom | Colorado Springs, CO
March 2020 - Present

  • Implementation & Deployment: Lead on-site implementation of hardware and software systems, ensuring strict adherence to client configuration standards and network protocols.
  • Complex Troubleshooting: Diagnose root causes of system failures in diverse field environments, requiring rapid problem-solving under tight SLAs.
  • Documentation: Maintain detailed service records and configuration logs to support knowledge sharing and future troubleshooting efforts.
  • System Maintenance: Perform OEM warranty repairs and upgrades on servers and workstations, maintaining operational continuity for enterprise clients.

Regional Field Tech

NPC International | Denver, CO
December 2015 - August 2019

  • Network Support: Managed physical layer connectivity and troubleshooting for distributed retail locations, ensuring uptime for POS and back-office systems.
  • Asset Management: Responsible for inventory and lifecycle management of IT assets across the assigned region.
  • System Updates: Performed regular system updates and security patches to ensure operational integrity across multiple locations.

Technical Support Representative

PlumChoice, Inc | Colorado Springs, CO
May 2008 - April 2015

  • Remote Assistance: Provided detailed technical guidance and troubleshooting assistance via phone, email, and chat, utilizing remote access tools to resolve complex software issues.
  • Security Remediation: Specialized in malware detection and removal, restoring system integrity for end-users.

Telecom/Network Technician II (Contractor)

Hewlett-Packard | Colorado Springs, CO
January 2006 - August 2007

  • Network Implementation: Activated and troubleshot network connections and telephone systems across remote sites in the US and Canada.
  • Remote Coordination: Managed dispatch for network and telecom issues at unstaffed remote sites, coordinating with on-site vendors for resolution.

Education & Certifications

CompTIA A+ Certification

Associate of Applied Science in Computer Information Systems

Pikes Peak Community College | Colorado Springs, CO