Senior Network Security Engineer
$140k - $155kCO1046 Sirius Federal, LLC
This position is located in the Network Engineering and Operations (Networking) Directorate, House Information Resources (HIR), Office of the Chief Administrative Officer (CAO), U.S. House of Representatives (House). The Networking Directorate provides operational support services to the House that ensure reliable and dependable connectivity to the House Data Network both on the House Campus and to over 820 District Offices as well as numerous Business Continuity and Disaster Recovery (BC/DR) sites, facilities, and mobile capabilities. This position serves as the Senior Network Systems Engineer. Key responsibilities include providing senior engineering analyses, design, testing, integration, and Level 3 operations for the House wide-area networks; performing cost/benefit analysis on new and competing technologies; assisting in preparing and reviewing proposals and quotes; and providing senior level operational support on day to day operations and complex problem resolution. This position has access to Personally Identifiable Information (PII).
What You Will Do
Evaluates and recommends commercially available, standards compliant wide-area networking solutions.
Develops traffic engineering studies and analyses to determine data network requirements.
Performs cost/benefit analysis on competing methods of providing data communications.
Designs complex integrated communication networks and develops network service specifications and procedures.
Assists in the preparation of Request for Proposals and Request for Quotations.
Reviews and evaluates reliable, cost-effective, and efficient wide-area communications for the House.
Provides senior level operational support on day-to-day operations and resolution to complex WAN/LAN problems.
Conducts performance and bandwidth utilization monitoring of wide-area communication systems.
Keeps abreast of relevant telecommunications technology changes and applies industry standards to House requirements.
Trains other House staff in telecommunications technologies and provides technical guidance to junior level engineers.
Performs other official duties and special projects as assigned.
What We Expect of You
Bachelor’s degree in a related field or equivalent work experience.
Minimum 5 years of experience designing and supporting large scale campus networks and/or wide-area networks.
Experience in contract management, project management, SDLC, and change management processes required.
Experience with Visio.
Strong knowledge of BGP and Internet Routing.
Knowledge of DMVPN and IPSEC VTIs.
Knowledge of DWDM and Optical Transport Systems.
Knowledge of TCP, UDP, QoS, DNS/DHCP, TLS/ SNMP, EIGRP, and OSPF.
Skill in analyzing Sniffer traces.
Skill in the coordination of network engineering and integration projects.
Ability to manage large projects and bring them to a successful conclusion.
Ability to provide engineering leadership on all phases of analysis, design, testing, and implementation of networks, integration of voice and data, and telecommunications.
Ability to perform complex planning and evaluation of network systems.
Ability to communicate effectively, both orally and in writing, with elected officials, senior staff, information systems professional, and non-technical users.
Employees within this position are expected to demonstrate the following HIR Technical Competencies:
- Analytics
- Application Administration and Integration
- Emergency Response Planning and Risk Management
- Hardware Installation and Management
- Information Management
- Information Resources Strategy and Planning
- Information Systems/Network Security
- Information Technology Support
- Knowledge of Emerging Trends and Industry Best Practices
- Network Management
- Project Management
- Quality Assurance and Testing
- Telecommunications
All employees within CAO are expected to demonstrate the following general competencies:
- Accountability
- AdaptabilityCollaboration
- Communication
- Customer Orientation
- Knowledge of Relevant Policies, Procedures, and Processes
- Priority Management
- Problem Resolution
This position is located in an office setting that is adequately heated, lighted, and ventilated. Normal safety precautions apply. The work involves carrying of light items such as books, papers and small office equipment. The incumbent must be able to meet minimum physical requirements (lifting, bending, crouching, standing, etc.). Must successfully complete a criminal history records check. Employee may be subject to drug testing in accordance with the CAO Drug Free Workplace Plan. Must be able to secure and maintain Federal Government security clearances as deemed appropriate by senior management.
Pay range: $140,000 - $155,000 depending on experience and skill set. Annual bonus target of % subject to terms and conditions of plan.
Benefits overview:
CDW is committed to being an AI-fluent organization We’re looking for people who bring curiosity, a learner’s mindset, and a willingness to engage with ever-evolving technology and tools. We value adopting AI as a partner, openness to experimentation, and a shared interest in learning together on AI. Our goal is to create a culture where AI enhances—not replace—and decision‑making. You don’t need to be an expert today; what matters is your readiness to explore, adapt, and grow with us as we integrate. Additionally, CDW is committed to fostering an equitable, transparent, and respectful hiring process for all applicants. During our application process, our goal is to understand your experience, strengths, skills, and qualifications. As an AI forward company, we see AI not just as a tool, but as a catalyst for new ways of thinking, creating, and communicating. We encourage candidates to embrace an AI mindset. We welcome thoughtful use of AI to expand your perspective.
About Us
CDW is a Fortune 500 technology solutions provider that helps businesses, government, education, and healthcare organizations achieve what’s possible through technology.
What makes CDW different isn’t just what we do—it’s how we do it. At CDW we act as one—building trust, speaking candidly, and working together to achieve more. We play to win—focusing on what matters most and delivering for our customers. And we think forward—staying curious, moving fast, and continuously learning. We believe meaningful work happens when people feel supported, heard, and empowered to contribute. That’s why we think of ourselves as coworkers, not just employees—working together to solve complex challenges and deliver real impact for our customers and communities.
As a full‑stack, full‑lifecycle technology partner, CDW brings deep expertise, strong relationships, and broad industry knowledge to help turn ideas into outcomes. When you join CDW, you become part of a collaborative environment where your work matters, your growth is supported, and your contributions help shape what’s next. Together, we deliver the full promise of what technology can do. Together, we Make Amazing Happen.
CDW is an equal opportunity employer. All qualified applicants will receive consideration for employment without regards to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status or any other basis prohibited by state and local law.
At CDW, we make technology work so people can do great things. We are a leading multi-brand technology solutions provider to business, government, education and healthcare customers in the United States, the United Kingdom and Canada. Our coworkers across the globe are working together to bring technology to life for our customers by solving complicated IT business challenges, providing outstanding service, and orchestrating the technology landscape to optimize our customers’ performance.
#J-18808-Ljbffr- ...The DC Office of the Chief Financial Officer (OCFO) is seeking a Senior Network Security Engineer to support the ongoing design, implementation, operation, and security of the OCFO network and its supporting security infrastructure. You will configure and secure network...SeniorWork at officeLocal area
$150.96k - $170.61k
...Requirements: We require at least 6 years of network security experience. We are looking for deep... ...technical leadership, mentor other engineers, and drive security engineering initiatives... .... Responsibilities: We provide senior-level engineering, administration, troubleshooting...SeniorFull timeWork at officeRemote workFlexible hours- ...decoration: none; color: #464feb; } tr th, tr td { border: 1px solid #e6e6e6; } tr th { background-color: #f5f5f5; } Senior Network Security Engineer II BizTech Fusion is hiring a Senior Network Security Engineer II for one of our clients. Location: Washington,...SeniorLong term contractLocal areaRemote work
$107.9k - $195.05k
...information and/or position overview. Leidos is seeking a Senior Security Engineer to serve as the technical lead for day-to-day security activities... ...vulnerability remediation across Windows, Linux, network, desktop support and other engineering teams and provide hands...SeniorFull timeWork experience placement- ...committed to bringing cutting-edge autonomy, AI, computer vision, sensor fusion, and networking technology to the military in months, not years.ABOUT THE TEAMAnduril's Security Engineering team is looking for a security engineer to focus on building world class defensive...SeniorFull timeWork experience placementImmediate start
- ...committed to bringing cutting-edge autonomy, AI, computer vision, sensor fusion, and networking technology to the military in months, not years.ABOUT THE TEAMAnduril's Security Engineering team is looking for a security engineer to focus on building world class defensive...SeniorFull timeWork experience placementImmediate start
$207k - $320k
As a Sr. Network Security Engineer III, you’ll provide hands-on expertise securing mission-critical networks for a high-visibility customer with the goal of making an impact across the federal government. Our team is responsible for designing, operating, and hardening complex...SeniorFull timeLocal areaImmediate start$148.5k - $223.9k
...future of AI, and you are the future of Salesforce.Job Title: Senior Product Security Engineer, InfrastructureJob Category: Technology /... ...and non-technical audiences alike.Identity, Access, and Network Fundamentals: You understand authentication and authorization...SeniorFull time- ...Later bridges creativity and performance so campaigns don’t just look good—they deliver results. Learn more at later. com . Senior Security Engineer About this position: We're looking for a Senior Security Engineer to strengthen Later's company-wide security posture...SeniorFull time
- ...and other Microsoft 365 workloads. Design and implement data security and governance controls for Microsoft 365 Copilot and AI-... ...with Security Operations, Legal, Privacy, Compliance, and Cloud Engineering teams to translate regulatory requirements into technical controls...SeniorContract work
- ...Senior Security Engineer Location: Bethesda, MD (Requires Onsite 3–5 days per week as needs change) Employment Type: Full-time The... ...Collaborating closely with endpoint owners, infrastructure and network security teams, as well as enterprise security teams to...SeniorFull timeWork experience placementWork at officeShift work3 days per week
$105k - $145k
...: We require a bachelors degree in cybersecurity, networking, electrical or computer engineering, or computer science. We look for 2+ years of experience... ...with site members to support regional OT security initiatives. We provide technical support, deliver...SeniorFull timeTemporary workCasual workRelocation packageFlexible hours- ...Description Job Description Evolver Federal is seeking a Senior Security Engineer to fulfill a requirement for a potential government client... .... Experience with PKI, encryption standards, and secure network design. Knowledge of automation tools for security...SeniorContract workFlexible hours
- ...is a leading platform-enabled unified security operations company providing a... ...India. UltraViolet Cyber is seeking a Senior Security Tools Engineer to support the security tools environment... ...EDR, SIEM, vulnerability management, network detection, or similar) Hands-on...SeniorTemporary work3 days per week
$180k - $220k
...matter, you'll feel at home here. About the Role As a Senior Security Engineer, Detection and Response you will develop, scale, and evolve... ...detection rules and alerts across logs, telemetry, host, network, and cloud. Own the security data platform end to end....SeniorFull timeWorldwide$148.5k - $223.9k
...Salesforce.The ExperienceThe Enterprise Security Technology team builds and operates... ...'s enterprise workloads. As a Senior Endpoint Software Engineer, you develop, deploy, and operate automation... ...(XDR), Vulnerability Management, Network Security, and Application Control in...SeniorFull time$86.8k - $198k
Security Engineer, Senior The Opportunity: Everyone is trying to “harness the cloud”, but not everyone knows how to secure it. As a cloud security architect, you know how to assess and implement requirements that ensure the safety of information systems and protect them...SeniorFull timeContract workPart timeLocal areaRemote work- ...Job Summary (Senior Data Security Engineer Microsoft Purview): - Serve as the hands-on technical lead for enterprise data security, focusing on Microsoft Purview across cloud and on-premises environments. - Design, implement, and optimize Microsoft Purview...Senior
$207k - $320k
...As a Sr. Network Security Engineer III , you’ll provide hands-on expertise securing mission-critical networks for a high-visibility customer with the goal of making an impact across the federal government. Our team is responsible for designing, operating, and hardening...SeniorFull timeWork experience placementLocal areaImmediate startFlexible hours$165k - $175k
...solutions for the federal government by securing and managing data, providing scalable identity... ...State ZTA across identity, device, network, application/workload, and data, with automation... ...broken down into NIST SP 800-207 Policy Engine, Policy Administrator, and Policy...SeniorWork at officeLocal areaRemote work2 days per week1 day per week- ...Job Description Job Description Senior Network Security Engineer -Long-Term Contract (Government) Position Title: Network Security Engineer(NSE) Worksite Address: Washington, DC Interviews: In Person Or Webcam Only Short Description: NSE **Candidates...SeniorLong term contractLocal areaRemote work
- ...Description Overview cyDaptiv Solutions is seeking a Senior Cyber Security Engineer (CSE) with experience supporting Federal and DoD cyber... ...preferred. ~ Strong technical understanding of the network and systems operations in secured DoD environments. ~...SeniorFull time
- ...interests. Requisition #: Job Title: Senior Security Architect Location: Washington, DC... ...SOC analysts, incident responders, engineering teams, and leadership to ensure the security... ...~5-7 years designing secure system and network architectures for federal agencies;...SeniorMonday to Friday
- ...Job Description Job Description Job Title: Senior Data Security Engineer – Microsoft Purview Location: Washington, DC (On-site) Employment Type: Contract (W2 through ZipStaff — No C2C or 1099) About the Opportunity: ZipStaff is seeking a Senior Data Security...SeniorContract work
- ...MANTECH seeks a motivated, career and customer-oriented Senior Cloud Information System Security Engineer (ISSE) to join our team in Washington, D.C..... ...Identify information protection needs for an IS and Network Environment. Define IS and Network Environment security...SeniorWork at office
- iVision Consulting seeks a Foundational IT SME to provide targeted technical expertise on demand across endpoint, network, and cybersecurity domains. The role requires onsite presence 2-3 days per week in Bethesda, Maryland, and the ability to obtain a Public Trust clearance...Senior2 days per week3 days per week
$118.3k - $188.6k
...Position Summary: The Senior Information Security Engineer will be responsible for the ongoing development, implementation, and support of security... ...scanning tools. Design and implement secure network and system architectures for both on-premises and cloud...SeniorFull time- ...Description Minimum eight (8) years experience • Responsible for the secure design, analysis, and test of information security systems and... ...for detecting and mitigating risk to information systems. engineer and perform tests and test plans to satisfy audits. •...Senior
$121k - $203k
...compensation packages that recognize hard work and excellence. Job Description The Senior Information Security Engineer oversees the security of the Firm’s applications, networks, and systems. This position manages the security and integrity of the Firm’s...SeniorFull timeWork experience placementWork at office- ...Job Description Job Description We are seeking a Senior Network Security Engineer for an operations-first role supporting enterprise network security infrastructure across on-premises, remote-access, hybrid-cloud, and cloud-connected environments. This is not primarily...SeniorRemote workFlexible hoursNight shift
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Network Security Engineer. Be the first to apply!
- dlp security engineer Washington DC
- application security engineer Washington DC
- security software engineer Washington DC
- aws cloud security engineer Washington DC
- sr security engineer Washington DC
- endpoint security engineer Washington DC
- sr information security engineer Washington DC
- security infrastructure engineer Washington DC
- cloud security engineer Washington DC
- security engineer Washington DC





