F5 Principal Network Engineer

Job ID: 112839
Location: St. Louis, Missouri  [Remote]
Category: Infrastructure
Employment Type: Contract
Date Added: 06/12/2026
Apply Now
Back to Search

Apply Now

Fill out the form below to submit your information for this opportunity. Please upload your resume as a doc, pdf, rtf or txt file. Your information will be processed as soon as possible.


 
 
 
 
 
(Word, PDF, RTF, TXT)
Apply Now
* Required field.

Role Summary
This position entails serving as a senior F5 Principal Network Engineer responsible for overseeing and executing network modernization projects across multiple data centers. The role involves leading migration planning, implementing high-availability architectures, and supporting platform upgrades primarily focused on F5 BIG-IP environments. This is a critical role requiring expert-level knowledge to ensure seamless migration and robust network security configurations within a defined project timeline.

Responsibilities

  • Lead assessment and detailed migration planning for F5 i-Series to R-Series platform upgrades across six devices in two data centers.
  • Support the design and deployment of an Always-On VPN solution utilizing F5 Access Policy Manager (APM), ensuring high availability and secure remote access.
  • Provide consultation on Active/Active and High Availability (HA) network architectures for critical workloads, collaborating with engineering teams and senior stakeholders.
  • Install, configure, and validate the F5 Application Study Tool for traffic discovery, traffic management, and migration support purposes.
  • Develop and enhance architecture documentation to improve existing environment clarity, serving as a primary resource for future reference.
  • Coordinate and execute configuration activities within scheduled change windows, ensuring compliance during change freeze periods.
  • Produce comprehensive operation runbooks, design documentation, and handoff materials to facilitate ongoing operational support.
  • Collaborate with network, security, and existing F5 engineers to ensure knowledge transfer, validation of implementations, and adherence to best practices.
  • Assist in developing HA and load balancing strategies, including GTM/BIG-IP DNS design to optimize traffic management.
  • Contribute to troubleshooting, performance tuning, and ongoing management of F5 BIG-IP appliances and associated network infrastructure.

Qualifications

  • Expert-level experience in F5 BIG-IP administration, architecture, and troubleshooting (LTM, TMOS).
  • Proven experience with F5 i-Series to R-Series platform migrations and system modernization projects.
  • In-depth knowledge of F5 Access Policy Manager (APM), VPN design, and high availability configurations.
  • Strong understanding of networking fundamentals, including TCP/IP, DNS, routing, HTTP/HTTPS, TLS/SSL, and certificate management.
  • Ability to independently produce technical documentation, runbooks, and facilitate knowledge transfer.
  • Experience deploying and operating F5 Application Study Tool for traffic analysis.
  • Familiarity with GTM/BIG-IP DNS design and traffic management strategies.
  • Preferred skills include F5 SSL Orchestrator (SSLO), Advanced WAF experience, automation involving Ansible or Terraform, and F5 professional certifications (F5-CA, CTS, or CSE).
  • Ability to operate with minimal supervision given team constraints, with flexibility to adapt during discovery and HA workstream phases.
  • Excellent communication skills to work effectively with cross-functional teams and stakeholders.

Publishing Pay Range: $65.00 – $75.00 Hourly

This is a fully remote role and can be performed from an approved location.

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.

Apply Now
View All Jobs

Similar Jobs

Project Manager
San Diego, California  [On-Site]
Role Summary This senior Program/Project Manager role is based in San Diego, CA, and involves leading enterprise IT projects for local government clients. The position entails managing multiple projects within a fast-paced environment, ensuring deliverables are completed on time, within scope, and...

Test Engineer
Virginia, VA  [Remote]
Role Summary This position is a senior-level role focused on automated testing within an enterprise testing team. The primary responsibility is to develop, implement, and maintain automated testing frameworks to ensure high-quality software releases. The role requires collaboration across...

Senior Fullstack Developer
Reston , Virginia  [Remote]
Role Summary This position involves developing and maintaining complex software systems within a security-sensitive environment. The role requires a seasoned software engineer with extensive experience in designing, coding, testing, and validating software applications and database solutions. The...

Design Engineer
Seattle, WA  [On-Site]
Role Summary A senior-level Design Engineer position focused on leading systems engineering activities for advanced radio network implementations across numerous air traffic control facilities. The role involves designing, planning, and overseeing the deployment of large-scale radio communication...

Enterprise Quality Program Test Lead
Montgomery, Alabama  [On-Site]
Role Summary This position is responsible for leading and executing comprehensive User Acceptance Testing (UAT) and End-to-End (EE2E) testing activities within a Medicaid modernization initiative. The role involves developing test strategies, creating test cases, managing testing teams, and...