Summary
Overview
Work History
Education
Skills
Certification
Websites
Timeline
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Roosevelt Whitehead Jr.

Roosevelt Whitehead Jr.

Saint Hedwig

Summary

Results-driven Network Engineer with 7+ years of experience designing, securing, and supporting enterprise and DoD network infrastructure. Proven expertise in architecting scalable, secure hybrid environments across on-premises systems leveraging tools like Splunk for network monitoring and threat detection. Adept at translating complex technical risks into clear guidance for both technical teams and leadership.

Overview

6
6
years of professional experience
1
1
Certification

Work History

Network Engineer

TangoAlpha3
San Antonio
11.2024 - Current
  • Engineer and maintain secure enterprise network infrastructure across hybrid environments (on-prem and cloud) by configuring ACLs, firewalls, and certificate-based RADIUS authentication; leverage automation for secure configuration deployments and use Splunk for real-time monitoring and threat detection across AWS and Azure platforms.
  • Implement secure automated deployment practices across cloud and on-prem environments by using security principles such as least privilege, input sanitization, and least common mechanism.
  • Conduct Security Technical Implementation Guide (STIG) hardening and compliance assessments for network and computer systems in accordance with NIST 800-series and DoD Risk Managment Framework standards; identify system vulnerabilities, apply security controls, and document residual risk to present to Hospitals CIO for Risk Acceptance or Acceptance of Remediation Plan
  • Lead weekly network fundamentals training sessions for junior administrators, providing hands-on instruction, career guidance, and open Q&A to strengthen foundational knowledge, improve team collaboration, and foster professional growth within the department.

Network Controller

Leidos
Ogden
06.2024 - 11.2025
  • Monitored and responded to network and security incidents 24/7 across a global enterprise infrastructure supporting hybrid environments; performed root cause analysis and coordinated multi-vendor fault resolution.
  • Enforced NIST 800-53 standards and applied DISA STIGs to network devices, contributing to secure architecture baselines across classified DoD systems.
  • Collaborated with operations, engineering, and cybersecurity teams to restore critical services while ensuring alignment with DISN SLAs and mission assurance requirements.
  • Supported the development of fault-tolerant network designs and system redundancy strategies, contributing to secure and scalable service delivery.
  • Demonstrated technical proficiency in enterprise-grade technologies foundational to Hybrid platforms, including routing protocols (BGP/OSPF), VLAN segmentation, IPsec, and high availability protocols (HSRP, STP).

Information Technology Specialist

U.S Army
San Antonio
12.2019 - 12.2023
  • Maintained and supported Windows and Linux servers, user workstations, and network devices, applying security patches and configurations to reduce risk exposure.
  • Assisted in enforcing access controls and authentication policies across multiple systems, contributing to the overall integrity of sensitive communications and data..
  • Supported virtualization and system imaging efforts, gaining hands-on experience with scalable system deployments and environment replication.
  • Briefed leadership and peers on system risks, incidents, and mitigation steps, translating technical findings into clear and actionable updates.
  • Took part in mission planning and communications support, ensuring IT systems were secure and resilient in dynamic, high-demand situations.

Education

Bachelor of Science - Computer Science

The University of Texas At San Antonio
San Antonio, TX
12-2023

Skills

  • Network security
  • Automated deployment
  • Vulnerability assessment
  • Cloud architecture
  • Compliance standards
  • Incident response
  • Python and bash proficiency
  • User credential management
  • Documentation writing
  • Security technologies
  • User training
  • Proactive and team player
  • Strong troubleshooting skills
  • Risk management
  • Scalability strategies
  • System hardening
  • Technical communication
  • Operating system security
  • API security
  • Secure coding

Certification

  • Comptia Security + 2025 May 07
  • Cisco Certified Network Associate September 3, 2024
  • Cisco Certified Specialist - Enterprise Core July 5, 2025

Timeline

Network Engineer

TangoAlpha3
11.2024 - Current

Network Controller

Leidos
06.2024 - 11.2025

Information Technology Specialist

U.S Army
12.2019 - 12.2023

Bachelor of Science - Computer Science

The University of Texas At San Antonio

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