Riverbed Modeler

SAIC•Washington, DC

2d•$120,001 - $160,000•Hybrid

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

Bachelors and fourteen (14) years or more of related experience; Masters and twelve (12) years or more experience ; PhD or JD and nine (9) years or more experience.
Expert-level proficiency in Riverbed Modeler (OPNET), including Discrete Event Simulation (DES), simulation execution, and results analysis.
In-depth understanding of OSI Layer 0-3 technologies, including Ethernet, TCP/IP, routing protocols (BGP, OSPF), and WAN technologies (MPLS).
Strong programming skills in C or C++ for model customization, scripting, and protocol modeling.
Experience designing and testing complex WAN/LAN/WLAN network architecture.
Strong analytical and debugging skills to trace data packets and analyze network behavior, familiar with traffic analysis tools like Wireshark.
Bachelor’s or Master’s degree in Computer Engineering, Electrical Engineering, or related field.
U.S. citizenship, and an active DOD Secret clearance, with the ability to obtain a TS/SCI.

Nice To Haves

Experience with Riverbed SteelCentral AppResponse or NetPlanner.
Experience with radio frequency (RF) modeling or satellite communication simulations (Layer 0/1).

Responsibilities

Create, execute, and analyze high-fidelity discrete-event simulations in Riverbed Modeler to evaluate network performance, reliability, and scalability.
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.
Deep dive into Physical Layer (signal propagation, modulation, BER), Data Link (MAC protocols, switching, VLANs), and Network Layer (BGP, OSPF, EIGRP, MPLS, IPv6) functionalities.
Analyze simulation results to identify bottlenecks, packet loss, latency issues, and capacity constraints, proposing "what-if" scenarios to improve production network design.
Develop detailed network topologies, including LAN, WAN, and Wireless scenarios to validate architecture before hardware deployment.
Document simulation methodologies, scenarios, and results in detailed technical reports for stakeholder review.