Riverbed Modeler

SAIC • Arlington, VA

4d • Remote

About The Position

We are seeking a Subject Matter Expert (SME) in Network Protocols and Simulation to join our Advanced Engineering Group. The successful candidate will act as the technical lead for designing, modeling, and analyzing high-fidelity network architectures. Using Riverbed Modeler (OPNET), you will simulate, troubleshoot, and optimize complex network scenarios, focusing on Physical (L1), Data Link (L2), and Network (L3) layers, including physical medium modeling (L0). This position is remote with travel.

Requirements

• Expertise in Riverbed Modeler (OPNET)
• Proficiency in C/C++ for model development
• Deep understanding of Physical (L1), Data Link (L2), and Network (L3) layers of the OSI model
• Knowledge of physical medium modeling (L0)
• SME in routing, switching, and transport protocols
• Experience with BGP, OSPF, EIGRP, MPLS, IPv6
• Ability to analyze simulation results to identify performance issues
• Experience in developing network topologies (LAN, WAN, Wireless)
• Strong technical reporting skills

Responsibilities

• Network Simulation (OPNET/Riverbed): Create, execute, and analyze high-fidelity discrete-event simulations in Riverbed Modeler to evaluate network performance, reliability, and scalability.
• Protocol Development & Analysis: Act as an SME in routing, switching, and transport protocols. Modify existing models or develop custom models using C/C++ to simulate proprietary or emerging protocols.
• OSI Layers 0-3 Focus: Deep dive into Physical Layer (signal propagation, modulation, BER), Data Link (MAC protocols, switching, VLANs), and Network Layer (BGP, OSPF, EIGRP, MPLS, IPv6) functionalities.
• Performance Optimization: Analyze simulation results to identify bottlenecks, packet loss, latency issues, and capacity constraints, proposing "what-if" scenarios to improve production network design.
• Architecture Modeling: Develop detailed network topologies, including LAN, WAN, and Wireless scenarios to validate architecture before hardware deployment.
• Technical Reporting: Document simulation methodologies, scenarios, and results in detailed technical reports for stakeholder review.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed