Job Requirements
Chantilly, VA
Secret Polygraph not specified
Mid Level Career (5+ yrs experience)
$197,000 - $228,800
Job Description
Job #: 3053810
Apex Systems is currently hiring a Network Engineer (Riverbed Modeler SME) with a large federal client. As a Network Engineer, you will serve as a technical leader responsible for designing, modeling, simulating, and analyzing complex network architectures. You will leverage Riverbed Modeler to evaluate network performance, reliability, and scalability while supporting mission-critical network modernization and architecture efforts.
Project Details / Mission Supported:
• Create, execute, and analyze high-fidelity discrete-event simulations using Riverbed Modeler to evaluate network performance, reliability, and scalability.
• Serve as a subject matter expert for routing, switching, transport, and network protocol analysis.
• Design, model, and validate complex LAN, WAN, and wireless network architectures prior to deployment.
• Modify existing simulation models and develop custom models using C/C++ to support proprietary and emerging protocol requirements.
• Analyze OSI Layers 0-3, including physical, data link, and network layer technologies.
• Evaluate network performance metrics including bandwidth utilization, packet loss, latency, and throughput.
• Identify system bottlenecks and recommend improvements to network architecture and design.
• Support architecture validation efforts through simulation and modeling activities.
• Document simulation methodologies, test scenarios, results, findings, and technical recommendations.
• Collaborate with engineering teams and stakeholders to develop optimized network solutions supporting mission requirements.
Qualified candidates will have the following experience and skills:
• Bachelor's or Master's degree in Computer Engineering, Electrical Engineering, Computer Science, or a related technical field.
• Significant experience in network design, network architecture, and modeling/simulation environments.
• Expert-level experience utilizing Riverbed Modeler, including Discrete Event Simulation (DES).
• Strong understanding of OSI Layers 0-3 technologies.
• Deep knowledge of Ethernet, TCP/IP, routing protocols such as BGP and OSPF, and WAN technologies including MPLS.
• Experience designing, implementing, and testing complex WAN, LAN, and WLAN architectures.
• Strong C or C++ programming skills for protocol modeling and simulation customization.
• Experience tracing data packets, troubleshooting network performance issues, and analyzing network behavior.
• Experience utilizing traffic analysis and troubleshooting tools such as Wireshark.
• Strong analytical, communication, and documentation skills.
Preferred Qualifications:
• Experience with Riverbed SteelCentral AppResponse and/or NetPlanner.
• Experience supporting RF modeling environments.
• Experience with satellite communications simulations and Layer 0/1 technologies.
• Background supporting defense, aerospace, or large-scale enterprise networking environments.
• Experience developing technical reports and architecture recommendations for senior stakeholders.
Location: Chantilly, VA
Onsite expectation: Partial Remote / Hybrid
Clearance Level: Ability to Obtain and Maintain an Active U.S. Secret Security Clearance
Salary/Pay Range: $95.00 - $110.00/hour W2
PLEASE NOTE: Candidates must have the ability to obtain and maintain an active United States Secret-level security clearance as a condition and continuation of employment.*
If you are interested, please apply here or email an updated copy of your resume to tgbrown@apexsystems.com
Apex Systems Military & Veteran Programs
At Apex Systems, we are proud to support those who serve. Our commitment to the military community is reflected in our robust veteran hiring initiatives, military-friendly workplace policies, and nationally recognized programs. We value the leadership, discipline, and mission-first mindset that military professionals bring to our team. Join us in continuing your mission.
Why Apex is a Top Choice for Veterans and Military Talent:
• Military-Friendly Employer: Recognized as a Military Friendly® Employer for multiple consecutive years.
• Transition Programs: DoD SkillBridge program with multiple pathway options.
• Veteran Hiring Commitment: We actively partner with multiple veteran and military organizations that specialize in IT upskilling and certification training, helping service members and veterans transition into high-demand tech careers.
• Apex Military Network: Internal employee resource group supporting veterans, Guard/Reserve members, and their families.
Apex Benefits Overview
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. 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, 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. 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 Apex team member can provide.
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 https://www.apexsystems.com/privacy-policy
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 accommodations@apexsystems.com or 804-523-8228. 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.
Apex Systems is currently hiring a Network Engineer (Riverbed Modeler SME) with a large federal client. As a Network Engineer, you will serve as a technical leader responsible for designing, modeling, simulating, and analyzing complex network architectures. You will leverage Riverbed Modeler to evaluate network performance, reliability, and scalability while supporting mission-critical network modernization and architecture efforts.
Project Details / Mission Supported:
• Create, execute, and analyze high-fidelity discrete-event simulations using Riverbed Modeler to evaluate network performance, reliability, and scalability.
• Serve as a subject matter expert for routing, switching, transport, and network protocol analysis.
• Design, model, and validate complex LAN, WAN, and wireless network architectures prior to deployment.
• Modify existing simulation models and develop custom models using C/C++ to support proprietary and emerging protocol requirements.
• Analyze OSI Layers 0-3, including physical, data link, and network layer technologies.
• Evaluate network performance metrics including bandwidth utilization, packet loss, latency, and throughput.
• Identify system bottlenecks and recommend improvements to network architecture and design.
• Support architecture validation efforts through simulation and modeling activities.
• Document simulation methodologies, test scenarios, results, findings, and technical recommendations.
• Collaborate with engineering teams and stakeholders to develop optimized network solutions supporting mission requirements.
Qualified candidates will have the following experience and skills:
• Bachelor's or Master's degree in Computer Engineering, Electrical Engineering, Computer Science, or a related technical field.
• Significant experience in network design, network architecture, and modeling/simulation environments.
• Expert-level experience utilizing Riverbed Modeler, including Discrete Event Simulation (DES).
• Strong understanding of OSI Layers 0-3 technologies.
• Deep knowledge of Ethernet, TCP/IP, routing protocols such as BGP and OSPF, and WAN technologies including MPLS.
• Experience designing, implementing, and testing complex WAN, LAN, and WLAN architectures.
• Strong C or C++ programming skills for protocol modeling and simulation customization.
• Experience tracing data packets, troubleshooting network performance issues, and analyzing network behavior.
• Experience utilizing traffic analysis and troubleshooting tools such as Wireshark.
• Strong analytical, communication, and documentation skills.
Preferred Qualifications:
• Experience with Riverbed SteelCentral AppResponse and/or NetPlanner.
• Experience supporting RF modeling environments.
• Experience with satellite communications simulations and Layer 0/1 technologies.
• Background supporting defense, aerospace, or large-scale enterprise networking environments.
• Experience developing technical reports and architecture recommendations for senior stakeholders.
Location: Chantilly, VA
Onsite expectation: Partial Remote / Hybrid
Clearance Level: Ability to Obtain and Maintain an Active U.S. Secret Security Clearance
Salary/Pay Range: $95.00 - $110.00/hour W2
PLEASE NOTE: Candidates must have the ability to obtain and maintain an active United States Secret-level security clearance as a condition and continuation of employment.*
If you are interested, please apply here or email an updated copy of your resume to tgbrown@apexsystems.com
Apex Systems Military & Veteran Programs
At Apex Systems, we are proud to support those who serve. Our commitment to the military community is reflected in our robust veteran hiring initiatives, military-friendly workplace policies, and nationally recognized programs. We value the leadership, discipline, and mission-first mindset that military professionals bring to our team. Join us in continuing your mission.
Why Apex is a Top Choice for Veterans and Military Talent:
• Military-Friendly Employer: Recognized as a Military Friendly® Employer for multiple consecutive years.
• Transition Programs: DoD SkillBridge program with multiple pathway options.
• Veteran Hiring Commitment: We actively partner with multiple veteran and military organizations that specialize in IT upskilling and certification training, helping service members and veterans transition into high-demand tech careers.
• Apex Military Network: Internal employee resource group supporting veterans, Guard/Reserve members, and their families.
Apex Benefits Overview
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. 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, 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. 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 Apex team member can provide.
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 https://www.apexsystems.com/privacy-policy
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 accommodations@apexsystems.com or 804-523-8228. 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.
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