Angel Castro
Greenwood Village,CO
Summary
Results-driven tech professional with expertise in network infrastructure, systems administration, and information security. Skilled in designing, configuring, and troubleshooting networks. Experienced in supporting mission-critical systems and enhancing security protocols. Proven ability to work cross- functionally to deliver innovative solutions and ensure system stability. U.S. Secret Clearance - Interim TS/SCI
Overview
9
9
years of professional experience
1
1
Certification
Work History
Senior Network Infrastructure Engineer
York Space Systems
Greenwood Village, USA
11.2022 - Current
- Oversee & maintain firewalls, servers, storage systems, and all other network components within the corporate environment
- Facilitated the design, and implementation of fiber networks across all York sites
- Develop & implement advanced & reliable configurations for virtual machines, VLANS, Palo Alto firewalls, and Hyper-V Clusters ensuring optimal performance and stability
- Manage systems monitoring, alerting, and log review for proactive infrastructure support
- Integrated space vehicle hardware and networking with azure cloud infrastructure for space vehicle testing
- Acted as execution team for controls in preparation for NIST 800-171 & CMMC
Network Administrator II / IT Support Specialist III
Onset Solutions
Lakewood, USA
04.2021 - 11.2022
- Deliver reactive support to 70 clients (1,500 users), aiding through email, phone, remote sessions, and on-site visits
- Support client servers, firewalls, switches, and other network infrastructure hardware
- Led hardware and software deployments, monitored client backups, and implemented DRPs
Network Administrator I / Cybersecurity Specialist I
Cynthetic Systems
Golden, USA
04.2020 - 04.2021
- Configured, monitored, and maintained firewalls, servers, and switches
- Managed Licensing, subscriptions, and network diagrams
- Delivered both reactive and proactive support to 200 employees, maintaining hardware inventory and tracking EOL cycle
- Designed, planned, and installed low voltage wiring systems
Data Protection Analyst
Intelisecure
Greenwood Village, USA
02.2019 - 03.2020
- Triaged incidents flagged by Symantec DLP to prevent data leaks, protecting company revenue and sensitive information
- Contributed to the deployment of the primary FAQ system, reducing ticket volume by 18%
- Provided technical troubleshooting via live chat, adhering to a 2-hour response SLA
Patient Access Specialist
Denver Health
Denver, USA
04.2017 - 01.2019
- Verified patient insurance information through calls to patients and providers
- Managed patient and provider calendars for efficient scheduling
- Performed clerical duties, including confirming patient prescriptions and mailing health related information
Lead Sales Representative
Ethos Consulting Group
Denver, USA
12.2015 - 03.2017
- Sold internet, phone, and television services door-to-door in residential markets
- Managed team sales territory and tracked sales data
- Trained team members in communication skills, sales techniques, and technical product knowledge
Education
Bachelor of Science - Network & Security Engineering
Western Governors University
Salt Lake City, UT05-2027
Skills
- Windows
- Ubuntu
- MAC OS X
- Linux Terminal
- CMD
- PowerShell
- Python
- Azure (AD, AADDS)
- 365 Admin
- M$ Defender
- CrowdStrike
- Webroot
- Palo Alto
- Unifi
- SD-WAN
- NinjaOne
- Veeam
- TCP/ IP
- Fiber Networks
- Visio
- PRTG
- Pager Duty
- Atlassian
- Lansweeper
Certification
United States Cleared Citizen, Secret Clearance - (Interim TS/SCI)
A+ - 2024
Net+ - In Progress
Sec+ - In Progress
CCCNA - In Progress
Timeline
Senior Network Infrastructure Engineer
York Space Systems
11.2022 - Current
Network Administrator II / IT Support Specialist III
Onset Solutions
04.2021 - 11.2022
Network Administrator I / Cybersecurity Specialist I
Cynthetic Systems
04.2020 - 04.2021
Data Protection Analyst
Intelisecure
02.2019 - 03.2020
Patient Access Specialist
Denver Health
04.2017 - 01.2019
Lead Sales Representative
Ethos Consulting Group
12.2015 - 03.2017
Bachelor of Science - Network & Security Engineering
Western Governors University
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