[Remote] Riverbed Modeler

Note: The job is a remote job and is open to candidates in USA. SAIC is seeking a Subject Matter Expert in network protocols and simulation to join its Advanced Engineering Group. The role leads the design, modeling, and analysis of high-fidelity network architectures using Riverbed Modeler (OPNET), with responsibilities spanning protocol simulation, performance optimization, architecture validation, and technical reporting.

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

Skills

• TYPICAL EDUCATION AND EXPERIENCE: 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
• * Experience with Riverbed/OPNET: Expert-level proficiency in Riverbed Modeler (OPNET), including Discrete Event Simulation (DES), simulation execution, and results analysis
• * Protocol Expertise (L1-L3): In-depth understanding of OSI Layer 0-3 technologies, including Ethernet, TCP/IP, routing protocols (BGP, OSPF), and WAN technologies (MPLS)
• * Programming Skills: Strong programming skills in C or C++ for model customization, scripting, and protocol modeling
• * Network Design: Experience designing and testing complex WAN/LAN/WLAN network architecture
• * Analytical Skills: Strong analytical and debugging skills to trace data packets and analyze network behavior, familiar with traffic analysis tools like Wireshark
• * Education: 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
• * Experience with Riverbed SteelCentral AppResponse or NetPlanner
• * Experience with radio frequency (RF) modeling or satellite communication simulations (Layer 0/1)

Benefits

• This position is remote with travel.

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