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Senior Computer Systems Engineer
Leidos
Washington, DC, United States
Hybrid
Senior
$107,900 - $195,050
RECENTLY POSTED

Description

Senior Systems Engineer / Leidos Digital Solutions (DSI)

Location: Washington, DC (Hybrid)

Leidos DSI is seeking a highly skilled, customer-focused Senior Systems Engineer to support mission-critical infrastructure for high-profile Federal Government customers. This is a hands-on, high-visibility role supporting secure, enterprise-scale environments that demand operational excellence, technical depth, and strong stakeholder engagement.  This position is based in Washington, DC. The selected candidate must be within commuting distance. The role is 100% on-site during the first 90 days.  There is currently flexibility for a 50% hybrid schedule thereafter but subject to change to 100% onsite to meet customer needs as required.

The Opportunity

As a Senior Systems Engineer, you will serve as the technical lead and trusted advisor for on-premises infrastructure environments supporting critical government missions. You will own the full systems lifecycle — from architecture and implementation through sustainment, optimization, and compliance — ensuring secure, resilient, and high-performing infrastructure operations.

Key Responsibilities

  • Serve as the primary technical steward for mission-critical, on-premises server and storage infrastructure.
  • Architect, implement, document, and sustain enterprise infrastructure supporting file and application servers.
  • Design and maintain highly available VMware environments and NetApp SAN solutions, including SnapMirror configurations.
  • Ensure compliance with required configuration baselines, vulnerability remediation standards, backup/recovery objectives, and system availability targets.
  • Act as the primary technical point of contact for government stakeholders and system owners, building strong, trusted relationships.
  • Capture, manage, and translate customer requirements into actionable technical solutions.
  • Implement and maintain systems in accordance with federal IT security policies and enterprise standards.
  • Prepare for and support security audits, inspections, and continuous monitoring activities.
  • Proactively identify risks and drive remediation efforts to maintain a strong cybersecurity posture.
  • Evaluate and integrate emerging technologies to improve operational efficiency and ensure mission continuity.
  • Support maintenance windows and occasional after-hours activities to prevent mission disruption.

Basic Qualifications

  • Bachelor’s degree with 8+ years of systems engineering experience, or
    Master’s degree with 6+ years of experience
    (Additional relevant experience may be considered in lieu of degree)
  • U.S. Citizenship required
  • Ability to obtain and maintain a Top Secret security clearance
  • Proven experience in customer-facing technical roles
  • Strong analytical and problem-solving capabilities
  • Excellent written and verbal communication skills
  • Demonstrated accountability, attention to detail, and persistence in resolving complex technical issues
  • Technical expertise in:
    • VMware (design, configuration, deployment, high availability)
    • NetApp SAN administration, including SnapMirror
    • Windows Server and RHEL Linux administration
    • Vulnerability remediation using tools such as Nessus
    • Configuration management best practices and tools

Preferred Qualifications

  • Experience with enterprise backup technologies (NetBackup, Commvault, etc.)
  • Familiarity with CI/CD pipelines (Git or similar)
  • Experience supporting AWS and/or Azure environments
  • Experience with monitoring and endpoint management tools (Nagios, BigFix BES, etc.)
  • Ability to develop high-level infrastructure and network architecture diagrams

What Success Looks Like

  • Strong government stakeholders trust and satisfaction
  • Secure, stable, and highly available infrastructure operations
  • Proactive vulnerability management and audit readiness
  • Continuous improvement in performance, automation, and reliability

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:

February 19, 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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Linux Reverse Engineer / Vulnerability Researcher
Nightwing
Sterling, Virginia
In office
Mid - Senior
Private salary
RECENTLY POSTED

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in the intelligence community, defense, civil, and commercial markets. Nightwing is seeking a highly skilled Linux Reverse Engineer / Vulnerability Researcher (VRER) to support advanced research, development, and exploitation efforts against native Linux applications. The ideal candidate will have deep technical expertise in low-level software analysis, vulnerability discovery, and exploit development across multiple architectures. All technical personnel must meet baseline technical requirements and demonstrate strong analytical, problem-solving, and debugging skills in complex Linux environments. Key Responsibilities Perform reverse engineering of native Linux applications to identify vulnerabilities and weaknesses Develop, test, and debug software components and proof-of-concept exploits Conduct vulnerability research and exploitation activities targeting Linux binaries Analyze compiled code and system behavior across multiple architectures Collaborate with cross-functional technical teams to support research and operational objectives Produce clear technical documentation and reports detailing findings and methodologies Required Qualifications Current TS/SCI with Poly Clearance Minimum of three (3) years of hands-on experience developing, testing, and debugging software in: C C++ Python Demonstrated experience with: Reverse Engineering (RE) Vulnerability Research (VR) Exploitation of native Linux applications Strong understanding of Linux internals, system calls, memory management, and debugging tools Experience analyzing compiled binaries and low-level system behavior Desired / Preferred Qualifications Exploitation and reverse engineering experience on ARM and MIPS architectures Familiarity with common exploitation techniques (e.g., memory corruption, privilege escalation) Experience with tools such as GDB, IDA Pro, Ghidra, radare2, or similar Knowledge of secure coding practices and vulnerability mitigation techniques Please Note: This position is contingent upon contract award. At Nightwing, we value collaboration and teamwork. Youll have the opportunity to work alongside talented individuals who are passionate about what they do. Together, well leverage our collective expertise to drive innovation, solve complex problems, and deliver exceptional results for our clients. Thank you for considering joining us as we embark on this new journey and shape the future of cybersecurity and intelligence together as part of the Nightwing team. Nightwing is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.

SIGINT Target Digital Network Analyst
BOOZ, ALLEN & HAMILTON, INC.
Honolulu, HI, United States
Hybrid
Mid - Senior
$60,400 - $137,000
TECH-AGNOSTIC ROLE

The Opportunity:

With all the information available today, it takes a skilled intelligence analyst to know how to find and interpret the best data to give their clients the right answers. With the critical decisions made in our government every day, we need an intel analyst like you to do just that. As a Signals Intelligence ( SIGINT ) Target Digital Network Analyst ( TDNA ) , you use your spe cia lized te chn ical, regional, and functional experience and your attention to detail to develop intelligence, products, and analytical assessments to give your client the actionable intelligence and context they need. If you have strong analytical skills and a problem-solving mindset, we have an opportunity to use those skills to support our warfighters and protect our national security.

As an intelligence analyst on our team, you’ll help your client understand the operational landscape and mission environment. Using your comprehensive understanding of various collection platforms, you’ll explore new data sources, develop effective queries, and combine information from disparate sources, including SIGINT, Geospatial Intelligence ( GEOINT ) , and Open-Source Intelligence ( OSINT ) . You’ll validate information and develop tradecraft as you build assessments for targeter s, warfighters, and policy makers. As the authority on your mission, your client will look to you for time-critical recommendations, often under pressure.

This is a chance to grow your expertise and broaden your skill set in intelligence collection. You’ll share your expertise with other analysts through leadership and mentoring. We focus on growing as a team to deliver the best support to our customers, so you’ll have resources to learn new skills and tools.

Work with us as we provide the right information at the right time to support the critical needs of our warfighters and national security.

Join us. The world can’t wait.

You Have:

  • 3+ years of experience with SIGINT analysis
  • 3+ years of experience in target development and discovery
  • Experience with processes and tools related to SIGINT discovery analysis
  • Experience with so cia l network, persona, and metadata analysis
  • Knowledge of network configurations
  • Ability to provide shift work support
  • TS/SCI clearance with a polygraph
  • HS diploma or GED and 9+ years of experience in a professional work environment, Asso cia te’s degree and 7+ years of experience in a professional work environment, or Bachelor’s degree and 3+ years of experience in a professional work environment

Nice If You Have:

  • Experience with INDOPACOM intelligence problem sets
  • Experience in Cyber, Air, Naval, or Space domains
  • Experience with multiple intelligence disciplines
  • Knowledge of the data and tools multiple intelligence disciplines utilize
  • Ability to leverage existing applications or methods and provide input into the development of new applications that improve products or methods
  • Ability to collaborate and innovate to solve problems
  • Bachelor’s degree preferred ; Master’s degree a plus
  • Completion of a credentialing Service School, including Army MOS 35N or AFSC 1N4
  • Completion of an Intelligence Community ( IC ) tradecraft-recognized SIGINT analyst certification course
  • Net+, Sec+, CEH, CCNA, or SANS Certification

Clearance:

Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information ; TS/SCI clearance with polygraph is required.

Compensation

At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen’s benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page.

Salary at Booz Allen is determined by various factors, including but not limited to location, the individual’s particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $60,400.00 to $137,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen’s total compensation package for employees. This posting will close within 90 days from the Posting Date.

Identity Statement

As part of the application process, you are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud.

Work Model
Our people-first culture prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely.

  • If this position is listed as remote or hybrid, you’ll periodically work from a Booz Allen or client site facility.
  • If this position is listed as onsite, you’ll work with colleagues and clients in person, as needed for the specific role.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

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Frequently asked questions
Typically, a Security Engineer role requires a bachelor's degree in Computer Science, Information Technology, or a related field, along with relevant certifications like CISSP, CEH, or CompTIA Security+. Experience with network security, threat analysis, and vulnerability assessment is also highly valuable.
Key skills include knowledge of firewalls, VPNs, IDS/IPS systems, encryption technologies, and security protocols. Proficiency in scripting or programming languages, incident response, and risk management are also crucial.
Use Haystack’s advanced search filters to narrow down jobs by location, experience level, salary range, and specific security technologies. Set up job alerts to get notified about new Security Engineer openings that match your preferences.
Salary varies based on experience, location, and company size. Entry-level Security Engineers can expect between $70,000 and $90,000 annually, while experienced professionals often earn between $100,000 and $150,000 or more.
Yes, many companies offer remote or hybrid work options for Security Engineer roles. On Haystack, you can filter job listings by remote opportunities to find positions that match your desired work arrangement.