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Cybersecurity and Network Security Engineer

Hybrid in Bethesda, Maryland

•

8d ago

Position Details: Job Title: Cybersecurity and Network Security Engineer Job Type: Full-time Location: Hybrid Bethesda, MD (On-site two days a week) Dynanet Corporation Overview: Dynanet started with a focus on IT infrastructure and operations, helping organizations enhance their networks and overcome the limitations of 1990s technology. From strengthening communication channels to introducing innovative ways to collaborate and share information, Dynanet played a crucial role in shaping the ea

Full-time

Depends on Experience

Network Security Engineer

Herndon, Virginia

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Today

At Accenture Federal Services, nothing matters more than helping the US federal government make the nation stronger and safer and life better for people. Our 13,000+ people are united in a shared purpose to pursue the limitless potential of technology and ingenuity for clients across defense, national security, public safety, civilian, and military health organizations. Join Accenture Federal Services, a technology company within global Accenture. Recognized as a Glassdoor Top 100 Best Place to

Full-time

USD 100,200.00 - 203,400.00 per year

Network Cloud Security Engineer - TS/SCI with Polygraph

Herndon, Virginia

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Cyber and IT Risk Management Job Qualifications: Skills: Cyber Defense, Cybersecurity, Information Technology (IT), Network Security Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: Seize your opportunity to make a personal impact

Full-time

USD 161,500.00 - 218,500.00 per year

Cybersecurity Engineer - US Federal

McLean, Virginia

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Today

Your work days are brighter here. We're obsessed with making hard work pay off, for our people, our customers, and the world around us. As a Fortune 500 company and a leading AI platform for managing people, money, and agents, we're shaping the future of work so teams can reach their potential and focus on what matters most. The minute you join, you'll feel it. Not just in the products we build, but in how we show up for each other. Our culture is rooted in integrity, empathy, and shared enthus

Full-time

USD 130,200.00 per year

Network Security Software Engineer

Remote

•

Yesterday

A senior-level Network Security Software Engineer responsible for developing and maintaining high-performance network protocol decoding engines optimized for deep packet inspection at speeds exceeding 100 Gbps. The role involves designing features for Linux-based security appliances, collaborating with cybersecurity and AI teams, and ensuring the robustness and reliability of security solutions in real-time environments. The position offers the opportunity to work on cutting-edge packet processi

Easy Apply

Third Party, Contract

Depends on Experience

Security Engineer

Washington, District of Columbia

•

Today

Full-time

USD 93,400.00 - 176,200.00 per year

Sr. Application Security Engineer - Tysons, VA

Tysons, Virginia

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Today

Software Guidance & Assistance, Inc., (SGA), is searching for an Sr. Application Security Engineer for a Contract assignment with one of our premier Regulatory clients in Tysons, VA The main function of senior application security engineer is to plan, coordinate and implement application security practices in each phase of software development life cycle though testing, remediation support, tool evaluation, etc. This role involves in evaluating security vulnerabilities, security tools, imp

Contract

USD 75.00 - 82.00 per hour

Security Engineer

Washington, District of Columbia

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Today

Job ID: 2601320 Location: WASHINGTON, DC, US Date Posted: 2026-02-23 Category: Cyber Subcategory: Cybersecurity Ops Schedule: Full-time Shift: Day Job Travel: Yes, 10 % of the Time Minimum Clearance Required: Top Secret Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC is seeking qualified Security Engineer with expertise in building, managing, and maintaining secure network environments. This role will involve providing day-to-day operational

Full-time

USD 80,001.00 - 120,000.00 per year

Principal Endpoint Security Systems Engineer

Bethesda, Maryland

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Today

Leidos has an exciting opportunity a Principal Endpoint Security Systems Engineer in our Intel Security Sector's Analysis Solutions Business Area. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Fl

Full-time

USD 131,300.00 - 237,350.00 per year

Security Infrastructure Engineer

Alexandria, Virginia

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Today

As a Security Engineer on our team, you will operate and maintain network security infrastructure utilized by a team of cybersecurity analysts in support of 24x7x365 mission-critical operations. Primary Responsibilities: Work with government counterparts, contractors, and internal team members to deploy and manage policies, rules, and signature sets on cybersecurity capabilitiesManage high-priority tasks and outagesMaintain, develop, and improve Security Infrastructure standard operating proced

Full-time

USD 107,900.00 - 195,050.00 per year

Sr. Cyber Security Engineer

Bethesda, Maryland

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Today

Leidos has an exciting opportunity for a Cyber Security Analyst (Senior) in our Intel Sector's Analysis Solutions Business Area (ASBA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Sche

Full-time

USD 107,900.00 - 195,050.00 per year

Application Security Engineer

Tysons, Virginia

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Today

Description: Hybrid 3 days onsite in Tysons Corner, VA A private, non-governmental entity that functions as a self-regulatory organization, responsible for oversight, enforcement, and dispute resolution within the securities industry, following the consolidation of earlier regulatory organizations. The organization is currently seeking an Application Security Engineer to support its technology and security initiatives. We can facilitate w2 and corp-to-corp consultants. For our w2 consultants,

Contract

Senior Information Systems Security Engineer (ISSE)

Tysons, Virginia

•

Today

Full-time

USD 171,700.00 - 211,800.00 per year

Information System Security Engineer

McLean, Virginia

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Today

Job ID: 2600313 Location: MCLEAN, VA, US Date Posted: 2026-01-13 Category: Cyber Subcategory: Cybersecurity Spec Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: TS/SCI with Poly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC is seeking an Information System Security Engineer (ISSE) to provide information security support. This position is in McLean, VA and requires an active TS/SCI clearance with Polygraph. This Cu

Full-time

Security Engineer (Multiple Levels)

Washington, District of Columbia

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Today

Responsibilities Program Overview This role supports the implementation, integration, and ongoing operation of National Airspace System (NAS) and FAA information systems. The position provides certified and licensed security support to ensure systems meet FAA, federal, and NIST security requirements throughout the system development life cycle. Position Summary The Information Systems Security Engineer/Analyst provides security engineering, analysis, and compliance support for FAA systems an

Full-time

USD 114,390.00 - 240,350.00 per year

Threat Detection & Response Engineer, Senior (Security Clearance Required)

Arlington, Virginia

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26d ago

ICF is actively recruiting for an experienced and cleared Senior Threat Detection & Response Engineer to support the research and development of new cyber analytic capabilities that will help the US protect and defend its networks and critical information systems. The successful cleared candidate will act as a Senior Threat Detection & Response Engineer to support a large federal cyber security analytic program. Your work will contribute to the knowledge of how cyber-attacks work, how vulnerabil

Full-time

USD 119,323.00 - 202,850.00 per year

Threat Detection & Response Engineer, Senior (Security Clearance Required)

Arlington, Virginia

•

Today

Full-time

USD 119,323.00 - 202,850.00 per year

Manager I, Cyber Security Engineering

Hybrid in Vienna, Virginia

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Today

Overview To plan, supervise and direct the engineering functions within the Cybersecurity Technology Engineering (CTE) team. Collaborate with managers and supervisors within the CTE to define the strategic vision for the team. Provide leadership, guidance, and technical expertise to ensure appropriate security protocols are leveraged to protect NFCU's brand, data, and IT assets from cyber-based threats. Serve as subject matter expert regarding section functions, systems, and policies and procedu

Full-time

$131,700-$206,450 per year

Security Information and Event Management (SIEM) Engineer - Senior Consultant

Washington, District of Columbia

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Today

Job Family: Cyber Consulting Travel Required: Up to 10% Clearance Required: Active Top Secret SCI (TS/SCI) As a Senior Consultant in Guidehouse's cyber practice, you will lead the design, implementation, and continuous improvement of SIEM capabilities for a federal law enforcement agency's classified environment. You'll combine hands on SIEM engineering with client facing consulting: translating mission risk into actionable detections, mentoring junior engineers/analysts, and advising stakeho

Full-time

USD 113,000.00 - 188,000.00 per year

Endpoint Security Engineer Lead

Arlington, Virginia

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Today

Leidos has an immediate need for a lead Endpoint Security Engineer for a customer on a highly visible and strategic Cybersecurity Task Order. The Security Engineer will need to be a self-starter with excellent analytical and problem-solving skills, flexibility, good judgment, and the ability to coordinate multiple, concurrent tasks in an effective manner. This individual will work with internal team members to ensure that systems are functional, secure, and scalable. The Security Engineer will s

Full-time

USD 131,300.00 - 237,350.00 per year

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