Countermeasures Engineer

Posted 17 Days Ago
Be an Early Applicant
Chambersburg, PA, USA
In-Office
108K-195K Annually
Mid level
Information Technology • Software
The Role
Supports defense of cross-domain enterprise services by establishing security baselines, maintaining customer configurations, validating SIEM data access, developing threat detection analytics and countermeasures, tracking compliance with NSA Raise the Bar standards, and creating data health dashboards. The role requires cybersecurity network defense knowledge, enclave networking, EDR technologies, DoD certification, and an active Secret clearance or eligibility to obtain one.
Summary Generated by Built In

This position will support the DISA DECO Task Order 22 Network Assurance (NA) Program to refine and maintain the defense of Cross Domain Enterprise Services (CDES) infrastructure. This candidate will be expected to actively engage with a variety of customers, collaborating with them, anticipating their needs, and delivering flawlessly. Candidate should demonstrate a strong understanding of Cybersecurity fundamentals, threat actor TTP frameworks such as the MITRE ATT&CK framework, developing and deploying Cybersecurity threat detection and mitigation rules and analytics, and developing new and innovative solutions to defend customer networks in accordance with industry and government standards.


PRIMARY RESPONSIBILITIES:

  • Establish baseline security relevant data in accordance with NSA National Cross Domain Services Management Office (NCDSMO) Raise the Bar (RTB) standards.
  • Maintain integrity and efficacy of customer configurations; establish baseline customer configuration as  part of onboarding; work with the customer to track changes to the infrastructure.
  • Work with the various primary monitoring centers to validate access to data and CDES index/indices with a SIEM.
  • Collaborate with other teams to apply threat intelligence to the development of analytics and countermeasures; develop analytics and countermeasures.
  • Track and make recommendations for RTB compliance by DISA and mission partners.
  • Keep abreast of the RTB standards; work with the DISA CDES office and NCDSMO to understand changes to the standards; determine changes needed by DISA CSSP to assist with compliance.
  • Work with peer teams to establish data health/monitoring dashboards.

BASIC QUALIFICATIONS:

  • Must have an active DoD Secret security clearance or higher (program can support up to TS)
  • Bachelor's degree from an accredited college in a related discipline with 4+ yrs of professional experience; additional or equivalent experience can be substituted in lieu of a degree.
  • Knowledge of Cyber Network Defense (CND) with regards to protect, detect, respond and sustain within a Computer Incident Response organization. 
  • Must be able to work independently in a high visibility, frequently changing environment.
  • Understanding of enclave-level networking and sensor technologies.
  • Understanding of Endpoint Detect and Response (EDR) technologies.
  • Must have an active DoD-8570 IAT Level 2 baseline certification (Security+ CE) at your start date.
  • Motivated self-starter with strong written and verbal communication skills. 

PREFERRED QUALIFICATIONS:

  • Experience with DISA and DoD Networks.
  • User-level experience with Microsoft SharePoint.
  • Privileged-user level experience with Microsoft Azure and the Microsoft Defender Suite of tools.
  • Microsoft AZ-104, AZ-500, and SC-200 certifications, or other Microsoft Azure and Defender-related certifications.
  • Experience developing scripts in Python and PowerShell.
  • Advanced Certifications such as SANS GIAC/GCIA/GCIH, CISSP, CCNA, CCNP or CASP.
  • Experience in intelligence driven defense.
  • Experience with DOD accreditation.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:October 8, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:Pay Range $107,900.00 - $195,050.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Skills Required

  • Bachelor's degree in a related discipline and 4+ years of professional experience; equivalent experience may substitute for the degree
  • Knowledge of Cyber Network Defense, including protect, detect, respond, and sustain functions within a Computer Incident Response organization
  • Ability to work independently in a high-visibility, frequently changing environment
  • Understanding of enclave-level networking and sensor technologies
  • Understanding of Endpoint Detection and Response technologies
  • Active DoD-8570 IAT Level 2 baseline certification, such as Security+ CE, at start date
  • Strong written and verbal communication skills
  • Active DoD Secret security clearance or ability to obtain one before program start
  • Experience with DISA and DoD networks
  • User-level experience with Microsoft SharePoint
  • Privileged-user experience with Microsoft Azure and Microsoft Defender tools
  • Microsoft AZ-104, AZ-500, SC-200, or comparable Azure and Defender certifications
  • Experience developing scripts in Python and PowerShell
  • Advanced certifications such as SANS GIAC, GCIA, GCIH, CISSP, CCNA, CCNP, or CASP
  • Experience in intelligence-driven defense
  • Experience with Department of Defense accreditation

Leidos Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.

  • Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
  • Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
  • Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.

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The Company
HQ: Reston, VA
27,104 Employees
Year Founded: 1969

What We Do

We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.

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