Cisco Principal Infrastructure Engineer

Job ID: 111445
Location: St. Louis, Missouri  [Remote]
Category: Infrastructure
Employment Type: Contract
Date Added: 02/02/2026
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Join our team as a Cisco Principal Infrastructure Engineer and lead the design, implementation, and management of cutting-edge Cisco network solutions that drive secure, reliable, and high-performance infrastructures. This is an exceptional opportunity for a seasoned network expert to influence critical projects and collaborate across multiple technology domains in a fast-paced, innovative environment.

Key Responsibilities:

  • Advanced Cisco Infrastructure Support: Architect, deploy, and troubleshoot complex Cisco network environments, including routers, switches, firewalls, and VPN solutions, ensuring maximum uptime and security.
  • Network Optimization: Continuously analyze and enhance network performance across LAN/WAN architectures, implementing scalable solutions aligned with organizational needs.
  • System Configuration & Maintenance: Manage Cisco IOS, IOS-XE, NX-OS configurations with precision, performing regular updates, patches, and health checks to ensure stability and security.
  • Solution Lifecycle Management: Lead the full lifecycle of Cisco infrastructure solutions—from planning and implementation to ongoing support—proposing enhancements that boost efficiency, security, and reliability.
  • Cross-Functional Collaboration: Work closely with network, security, and systems teams to develop integrated solutions, troubleshoot issues, and deliver seamless technology experiences.
  • Technical Documentation & Knowledge Sharing: Create comprehensive technical documentation, procedures, and knowledge base articles to facilitate team support and contemporary best practices.
  • Customer & Stakeholder Engagement: Serve as a trusted technical advisor, supporting client requirements and delivering exceptional service tailored to operational needs.

Qualifications:

  • Minimum of 5+ years of hands-on experience in network engineering, with deep expertise in Cisco routing, switching, security (ASA/Firepower), and VPN technologies.
  • Bachelor’s degree in Computer Science, Engineering, or a related field.
  • Certifications (Preferred but not mandatory): Cisco CCNP or higher (CCIE highly preferred), F5-CA or F5-CTS, Security+ CE, CCNA Security.
  • Active DoD TS/SCI clearance required, with IAT Level II or higher security certification.
  • Proven track record in designing, deploying, and supporting complex network architectures.
  • Excellent communication skills, with strong documentation, organizational skills, and the ability to work both independently and as part of a collaborative team.

Publishing Pay Rate: $100.00 – $120.00 Hourly

About GDH:
At GDH, we believe in the power of people and the importance of caring. Our culture statement, “We care about people,” isn’t just a tagline – it’s the core of everything we do. GDH is a premier staffing and talent solutions company dedicated to helping businesses find the best talent and assisting job seekers in finding their dream jobs.

Who We Are:
GDH, founded in 2001, has grown into a leader in providing staffing solutions across various industries. We specialize in IT across several sectors, connecting top talent with leading enterprises. As a Best of Staffing firm recognized for excellence in client, employee, talent, and women’s services, we pride ourselves on our commitment to quality and service.

GDH Benefits

GDH offers a range of employee benefits that are designed to promote well-being and help maintain a healthy work-life balance. These comprehensive benefits cover various aspects of an employee’s life and aim to enhance their overall experience with the company. Our health benefits include three medical insurance options with access to KISx Card, Zero Card, and HealthJoy concierge services. Other plan offerings include dental, vision, life, disability, supplemental insurance, and pet insurance plans. Enjoy additional perks like holiday pay, 401(k) plan, direct deposit, an employee referral program, work-life balance benefits, a Wellbeats membership, a discounted gym membership program, and more!  For more detailed information on benefits, please go to GDH’s website under the tab for candidates.

GDH provides equal employment opportunities (EEO) to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, gender, sex (including pregnancy), sexual orientation, gender identity, national origin, age, disability, genetic information, marital status, ancestry, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable federal, state, and local laws. Applicants with disabilities who require an accommodation or assistance in applying and/or for interviewing, please contact our HR Department.

Please visit our notice of collection for California applicants.

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