Riverbed Modeler

Network Protocols & Simulation Subject Matter Expert

Candidates must be able to obtain and/or maintain a Department of Defense Secret Security Clearance as a condition and continuation of employment

Description

We are seeking a Subject Matter Expert (SME) in Network Protocols and Simulation to join an Advanced Engineering Group supporting complex, mission-critical network architecture analysis and design. This role serves as the technical lead for designing, modeling, and analyzing highfidelity network architectures using Riverbed Modeler (OPNET).

The successful candidate will simulate, troubleshoot, and optimize complex network scenarios with a strong emphasis on Physical (L1), Data Link (L2), and Network (L3) layers, including physical medium modeling (Layer 0). This is a remote position with travel.

Key Responsibilities

• Network Simulation (OPNET / Riverbed):
• Create, execute, and analyze high-fidelity discrete-event simulations using Riverbed Modeler to evaluate network performance, reliability, scalability, and resiliency.
• Protocol Development & Analysis:
• Serve as a technical SME in routing, switching, and transport protocols. Modify existing models or develop custom models using C/C++ to simulate proprietary, emerging, or complex protocols.
• OSI Layers 0-3 Focus:
• Perform deep technical analysis across:
  • Layer 0/1: physical media characteristics, signal propagation, modulation, bit error rates
  • Layer 2: MAC protocols, switching, VLANs
  • Layer 3: routing and transport technologies such as BGP, OSPF, EIGRP, MPLS, IPv6
• Performance Optimization:
• Analyze simulation outputs to identify bottlenecks, packet loss, latency, and capacity constraints; develop "whatif" scenarios to improve network architectures prior to deployment.
• Architecture Modeling:
• Develop detailed LAN, WAN, and wireless network topologies to validate designs before hardware implementation.
• Technical Reporting:
• Document simulation methodologies, assumptions, scenarios, and results in detailed technical reports for stakeholder review.

Qualifications

Typical Education and Experience

• Bachelor's degree with 14+ years of related experience
• Master's degree with 12+ years of related experience
• PhD or JD with 9+ years of related experience

Required Skills and Qualifications

• Riverbed / OPNET Expertise:
• Expert-level proficiency with Riverbed Modeler, including discrete-event simulation, execution, and results analysis.
• Protocol Expertise (L0-L3):
• In-depth understanding of Ethernet, TCP/IP, routing protocols (BGP, OSPF), and WAN technologies (e.g., MPLS).
• Programming Skills:
• Strong C or C++ development skills for model customization, scripting, and protocol modeling.
• Network Design:
• Experience designing and testing complex WAN, LAN, and WLAN architectures.
• Analytical Skills:
• Strong debugging and analytical capabilities, including packet-level analysis using tools such as Wireshark .
• Education:
• Bachelor's or Master's degree in Computer Engineering, Electrical Engineering, or a related technical field .

Preferred Qualifications

• Experience with Riverbed SteelCentral AppResponse or NetPlanner.
• Experience with RF modeling or satellite communication simulations (Layer 0/1).
• Experience supporting high-security or classified network environments.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.

Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at

Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [email protected] or View phone number on click.appcast.io. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.