JRSS - Security Engineer (F5 Big-IP Load Balancer)

Job ID
# of Openings
Clearance Requirement
Education Requirement
Bachelor's Degree
F5, Security+, CISSP or equivalent
Experience Level
8570 Compliant


SMS is a fast growing, veteran-owned business that's has supported Federal Government's IT initiatives for over four decades.  We work side-by-side with our Federal clients as a trusted, long-term partner to offer innovative advice and leadership to solve their most pressing and complex problems. We orchestrate people, strategies, technologies and best-of-breed business processes. The SMS advantage in management and technology consulting includes deep domain expertise in complex networking design and unifying communities of interest. 


We have strong capabilities in design & build, planning, governance, quality management, security, analytics, virtualization, operations and business process improvement. For 40 years, SMS has brought customer satisfaction to Federal clients and formed lasting alliances with leading technology companies and talented small businesses to deliver joint, leading-edge, cost-effective services and products. 

Submit your resume today!


SMS is partnered with Global Information Grid (GIG) Service Management-Operations (GSM-O), a Defense and Intelligence Group of Leidos, has an opening for a F5 Load Balancing Engineer (Subject Matter Expert) for JRSS NOC at Scott AFB, IL.


Defense Information Systems Agency (DISA) located at Scott AFB, IL is partnering with the U.S. Army and Air Force to fundamentally change the way the Department of Defense (DoD) secures and protects its information networks by deploying Joint Regional Security Stacks (JRSS).  Joint Regional Security Stacks (JRSS) are designed for security of the network to be centralized into regional architectures instead of locally distributed architectures at each military base, post, camp or station.  This position directly supports the DISA-provided JRSS capabilities and services in our 24-7 Global Network Support Center working in our JRSS NOC.  We work in a performance-based environment where our performance is based on pre-determined Service Level Agreements (SLA) or Acceptable Levels of Performance (ALP).


  • Configure, maintain, and monitor existing network devices including PaloAlto Firewalls and F5 Big-IP load-balancers
  • Research, design, build, test, deploy, analyze, administer, and maintain the enterprise F5 network environments (hardware, software, and configuration components)
  • Maintain, install, and upgrade Juniper Firewalls and F5 Load Balancers
  • Responsible for the configuration, performance, availability, and security of the JRSS network architecture
  • Identify and document network errors and solutions
  • Analyze network and telecommunications alarms and identify potential issues
  • Writing, reading, and modifying configurations with F5 cli/tmsh
  • Design, configure, and troubleshoot application monitors
  • Able to work in a shift work environment as we are a 24/7 operation


  • Experience with the following: alarm surveillance, fault management, LAN maintenance, performance management
  • Expert knowledge of TCP/IP, IP routing, LAN and WAN protocols, BGP, campus and data center switching, and load balancing focusing on Cisco and F5 solutions
  • Expertise with of the following devices/vendors: CISCO, Juniper, A10, LTM, and F5Experience with Application Partitions, Route Domains & vCMP on Viprion and appliance platforms


  • Bachelor's degree in a relevant technical discipline with 8 years of overall related experience
  • 4+ years of additional related years of experience is accepted in lieu of a degree


Hold DoD-8570 IAT Level 2 baseline certification (Security+ CE, CISSP or equivalent) prior to start date



Active Secret security clearance



SMS is an Equal Opportunity Employer. 


SMS is a veteran-owned network integrator established in 1976.  With an employee retention rate averaging over 5 years, our ability to hire quality people and retain them in a rapidly evolving IT market proves why we are a world-class information technology company. At SMS, we place a high value on quality of service, customer satisfaction, and best-of-breed policies and practices. As a result, SMS is proud to be ISO 9001:2008 Registered and a CMMI Level 3 certified company, ensuring that we continue to meet and exceed the expectations of our customers, partners and employees.  


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