Sr. Network Engineer (Hybrid)

Company: Symposit LLC
Location: Beltsville
Posted on: February 18, 2026

Job Description:

Job Description Job Description Location Metro Washington, DC region (Remote with on-site support as needed at Beltsville, MD location). Employment Type Full-Time W2 Security Requirements Must comply with federal security policies; eligible for Public Trust clearance Position Summary Serve as the Senior Network Engineer providing technical labor support for high-performance network infrastructure. Responsibilities include designing, implementing, maintaining, and optimizing networks; troubleshooting complex issues; enforcing security; and coordinating with stakeholders to ensure reliability, scalability, and compliance with all applicable policies.? Work in close coordination with program administrators, project managers, and operations staff, responding to emails, chats, and calls within 2 business hours, providing weekly activity reports, and participating actively in all meetings.? Key Responsibilities Design, implement, and maintain high-performance network infrastructure, including performance tuning and optimization for reliability and scalability.? Develop and enforce network security policies, procedures, and best practices; perform regular security audits and vulnerability assessments.? Manage and troubleshoot complex network issues across multiple sites and architectures; provide on-site services and support as needed at Beltsville, MD.? Serve as Subject Matter Expert (SME) for operation and maintenance of the Lantronix Out-of-Band Management environment, escalating issues to support as required.? Evaluate and implement emerging networking technologies and innovations to improve performance; develop and maintain network documentation, diagrams, and configurations.? Guide and coordinate work of external Network Operations Center (NOC) to ensure optimal infrastructure operation; collaborate daily with NOC and site IT Points of Contact for issue resolution.? Provide support to help desk for network-related escalations; maintain open communication with ARS location IT contacts.? Plan, implement, and manage network connections, SD-WAN, IP routing, VLANs, QoS policies, multicast configurations, access control lists, encryption, and automation scripting (e.g., Python, Ansible).? Ensure compliance with federal regulations, cybersecurity requirements, IPv6 standards, and Section 508 accessibility; produce required reports and deliverables.? Deliverables and Performance Measures Weekly : NOC coordination reports, network connectivity/performance issue status updates, activity report to Program Manager, team calendar updates (2 days notice for leave).? Bi-weekly : Network security audit reports with analysis and remediation plans.? Monthly : Network performance reports with optimization recommendations.? Quarterly : Network upgrade/expansion summary reports.? Semi-annually : Reports on emerging networking technologies evaluation/implementation ; network diagrams review.? As needed : Updated network diagrams/configurations (within 2 business days of changes).? Performance Standards : 100% documentation accuracy; proactive risk mitigation; high stakeholder engagement; network uptime meeting standards; task acknowledgment within 2 business hours; inventory updates within 3 business days of change.? Required Qualifications Bachelor’s degree in Computer Science, Information Technology, Network Engineering, or related field (Master’s or specialized HPC networking training preferred).? Minimum 8 years of experience designing/implementing complex network architectures; configuring/managing routers, switches, firewalls; supporting data- intensive/scientific applications.? Extensive experience with high-performance computing (HPC) environments/large-scale enterprise networks; SD-WAN, IP routing (Internet2/commodity Internet); VLANs, QoS, multicast, ACLs, encryption.? Proven skills in network troubleshooting, security operations, performance monitoring, automation (Python, Ansible), and vulnerability assessments.? Deep knowledge of HPC networking community, RE/Internet2 practices, and interdisciplinary collaboration (computing/storage managers, developers, local operators, ISPs).? Strong problem-solving, verbal/written communication, project planning/execution, and multidisciplinary teamwork skills.? Ability to work independently under time constraints; manage multiple projects; perform on-site support as needed.? Preferred Qualifications Experience managing networks for scientific research/large datasets; cloud networking (AWS, Azure); network virtualization (VMware NSX, Cisco ACI).? Background in federal environments with compliance (FISMA Moderate, FOUO, NIST, STIGs).? What We Offer Competitive salary and benefits package commensurate with federal contractor rates for key personnel. Full benefits package, professional development, and access to government-furnished equipment (laptops, PIV cards). Opportunity to support critical infrastructure in a high-impact research computing environment.? Symposit LLC is an Equal Opportunity Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, disability, military status, national origin or any other characteristic protected under federal, state, or applicable laws. Symposit LLC participates in E-Verify. For more information please visit: www.dhs.gov/E-Verify Powered by JazzHR W5jJRqsTnx

Keywords: Symposit LLC, Olney , Sr. Network Engineer (Hybrid), IT / Software / Systems , Beltsville, Maryland