Hector Contrerassolis
Chicago,IL
Summary
DATA CENTER INFRASTRUCTURE ENGINEER
Data Center Infrastructure Engineer with 12+ years of experience supporting mission-critical environments, telecommunications systems, networ
k infrastructure, struc
tured cabling, fiber optics, and enterprise data center operations. Proven track record delivering infrastructure deployments, hardware lifecycle management, capacity planning, network connectivity, and critical facility support across financial services, healthcare, colocation, and military environments.
Experienced with data center build-outs, rack and stack deployments, copper and fiber infrastructure, server hardware, network equipment, monitoring systems, documentation standards, and operational excellence initiatives. Strong background supporting high-availability environments requiring strict uptime, security, and change-management processes.
Overview
15
15
years of professional experience
1
1
Certification
Work History
Infrastructure Engineer III
CME Group
Aurora, IL
03.2025 - Current
- Support infrastructure engineering and deployment activities within a mission-critical financial services data center environment.
- Execute data center infrastructure projects involving server, network, and storage hardware deployments.
- Perform rack and stack activities, structured cabling installations, and hardware lifecycle replacements.
- Install, test, label, document, and maintain copper and fiber-optic infrastructure.
- Support power, cooling, and capacity planning initiatives for high-density computing environments.
- Coordinate infrastructure maintenance and change-control activities while maintaining strict uptime requirements.
- Troubleshoot and resolve physical infrastructure issues impacting critical business systems.
- Collaborate with facilities, networking, systems, and security teams on expansion and modernization projects.
- Maintain infrastructure standards, documentation, and asset management records.
Senior Data Center Engineer
Ascension Technologies
Elk Grove Village, IL
01.2024 - 03.2025
- Manage and maintain 12+ data center locations, ensuring high availability and optimal performance
- Utilized SolarWinds for network and server monitoring, ensuring proactive detection of performance issues.
- Managed racking, stacking, and cabling of enterprise servers, switches, and storage devices in data center environments.
- Installed, configured, and maintained Dell PowerEdge and HP ProLiant servers, ensuring optimal performance and uptime.
- Managed EcoStruxure for real-time data center infrastructure monitoring, including power and cooling systems.
Data Center Operations Specialist
Equinix
Chicago, IL
12.2022 - 01.2024
- Performed break/fix and circuit installations for over 10,000 customers in a global data center
- Integrated fiber-optic and copper cabling into existing network infrastructures
- Used ServiceNow for IT service management, handling incident tickets, escalations, and problem resolution.
- Installed, and managed Cisco Catalyst, Extreme Networks, and HP Aruba switches for enterprise network infrastructure.
Telecommunications Specialist
United States Marine Corps
Camp Lejeune, NC
08.2020 - 11.2022
- Installed and maintained base-wide telecommunications and network components
- Spliced, terminated, and tested fiber and copper cables for mission-critical communications
- Troubleshot switched, multiplexed, and media-converted circuits, ensuring 99.9% uptime
- Conducted preventative maintenance, reducing unexpected failures by 40%
Network Infrastructure Technician
Tekworks
San Diego, CA
06.2019 - 06.2020
- Led private data center build-outs and structured cabling projects
- Installed and managed network racks, cabinets, and structured cabling systems
- Optimized network performance by reviewing and implementing design improvements
- Labeled and documented cabling infrastructure, reducing troubleshooting time by 50%
Military Telecommunications & Networking Lead
United States Marine Corps
Camp Pendleton, CA
04.2011 - 05.2019
- Installed and maintained fiber optic and copper telecommunications infrastructure.
- Supported LAN/WAN network operations and mission-critical communications systems.
- Performed cable splicing, circuit testing, network troubleshooting, and infrastructure deployments.
- Supported IDF/MDF environments and enterprise network connectivity.
Education
Bachelor of Science - Networking & Cybersecurity
DeVry University
Lisle, IL06.2026
Skills
- Rack & Stack
- Server Deployment
- Structured Cabling
- Capacity Planning
- Hardware Lifecycle Management
- Break/Fix Operations
- Network Infrastructure
- Asset Management
- TCP/IP
- LAN/WAN
- Routing & Switching
- Network Monitoring
- Circuit Provisioning
- SolarWinds
- ServiceNow
- Infrastructure Documentation
- Incident Management
- Change Coordination
- Power Distribution
- UPS Systems
- Cooling Infrastructure
Certification
- CompTIA A+
- OSHA 10
- CPR
- First Aid
- Confined Space Certification
Key Strengths
- Critical Thinking & Problem-Solving
- Time Management & Prioritization
- Team Leadership & Mentorship
- Attention to Detail
- Adaptability & Continuous Learning
Timeline
Infrastructure Engineer III
CME Group
03.2025 - Current
Senior Data Center Engineer
Ascension Technologies
01.2024 - 03.2025
Data Center Operations Specialist
Equinix
12.2022 - 01.2024
Telecommunications Specialist
United States Marine Corps
08.2020 - 11.2022
Network Infrastructure Technician
Tekworks
06.2019 - 06.2020
Military Telecommunications & Networking Lead
United States Marine Corps
04.2011 - 05.2019
Bachelor of Science - Networking & Cybersecurity
DeVry University