Cybersecurity Systems Administrator
About the job
- Bachelor’s degree in Information Systems, Computer Science, Computer Engineering, or another related field.
- Applicable DoD 8140 or DoD 8570 certification.
- At least 5 years of related experience.
- Proficiency in Linux environments, including system administration tasks and shell scripting for automation and customization.
- Solid understanding of cybersecurity principles, threat landscapes, and best practices for configuring and tuning security tools.
- Ability to troubleshoot complex technical issues and optimize system performance.
- Ability to interact effectively with technical and non-technical stakeholders.
- Ability to work independently, prioritize tasks, and meet deadlines in a dynamic and fast-paced environment.
- Ability to obtain and maintain a Top Secret/SCI security clearance.
- U.S. citizenship is required.
- Collaborate with cybersecurity stakeholders to define and implement effective configurations for SIEM, EDR, and network access control solutions.
- Customize and optimize SIEM alert rules, correlation searches, and detection mechanisms to align with security requirements and organizational objectives.
- Deploy new SIEM instances, including clustered deployments and apps.
- Fine-tune EDR policies, rulesets, and scanning parameters to enhance endpoint visibility and threat detection capabilities.
- Configure network access control policies for the comply-to-connect solution to enforce security posture and mitigate risks associated with unauthorized devices.
- Support Linux environments and edit and maintain Splunk configuration files and apps.
- Interact with end users to gather requirements, troubleshoot issues, and assist with creating Splunk search queries and dashboards.
- Integrate cyber tools with a variety of legacy data sources.
- Conduct routine maintenance, including software updates, patches, and performance tuning, to ensure cybersecurity systems remain reliable and efficient.
- Provide timely support and troubleshooting for SIEM, EDR, C2C, and SOAR platforms, collaborating with vendors or higher-level support as needed.
- Perform regular system audits and health checks to identify vulnerabilities, misconfigurations, or performance issues, and implement corrective actions.
- Present tool capabilities to leadership occasionally.
- Develop and enforce configuration standards, security policies, and operational procedures for cybersecurity systems in compliance with regulatory requirements and industry best practices.
- Monitor compliance with security policies and regulations through audits, assessments, and reporting, and take corrective actions to address deviations or gaps.
- Collaborate with compliance and audit teams to streamline regulatory compliance efforts and demonstrate adherence to security standards.
- Integrate cybersecurity systems with other security controls, data sources, and IT infrastructure components.
- Develop and maintain automation scripts, playbooks, and workflows within the SOAR platform to automate routine tasks, orchestrate incident response, and improve operational efficiency.
- Identify opportunities for continuous improvement using automation, orchestration, integration, emerging technologies, and industry trends.
- Provide training sessions and document processes so internal teams can effectively use cybersecurity systems.
- Share expertise, best practices, and lessons learned with colleagues through formal and informal channels.
- Prior CENTCOM/COCOM experience.
- Previous SOC experience.
- Previous cyber system administration experience.
- Linux experience.
About the company
GDIT provides IT services, systems engineering, and mission support to U.S. government and related agencies, covering digital modernization, cloud, cybersecurity, AI/ML, data analytics, application development, and IT infrastructure. It wins long-term government contracts and builds, operates, and maintains technology solutions for agencies across defense, civilian, health, and homeland security sectors. The company differentiates itself through large acquisitions that created a broad, integrated government IT capability and a clearance-backed workforce with deep domain knowledge in security and intelligence. Its goal is to help government agencies modernize operations securely and efficiently, including areas like battlespace technology, border security, and smart government initiatives through ongoing technology investments.
Company Size
10,001+
Company Stage
N/A
Total Funding
N/A
Headquarters
Falls Church, Virginia
Founded
1999
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Simplify's Take
What believers are saying
- August 7, 2026 Army National Guard ENOCS added $1.3 billion of option-rich work.
- September 28, 2026 CECOM task order deepens GDIT’s Army C5ISR-M footprint.
- September 2026 OpenAI and Everest launches position GDIT as federal AI and zero-trust integrator.
What critics are saying
- Amy Gilliland’s October 2, 2026 exit signals leadership instability during strategy execution.
- June 2026 WARN notices covered 657 jobs, tied to recompetes and contract extensions.
- Federal contract concentration creates existential risk if Army and Air Force recompetes swing against GDIT.
What makes General Dynamics Information Technology unique
- 2026 OpenAI Select Partner status gives GDIT federal-grade frontier-model integration.
- Everest Zero Trust spans 187 installations worldwide and over one million Air Force users.
- CSRA integration built GDIT’s scale across defense, intelligence, and civilian clearance-heavy work.
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Benefits
Health Insurance
Dental Insurance
Vision Insurance
Life Insurance
Disability Insurance
401(k) Retirement Plan
401(k) Company Match
Paid Vacation
Paid Sick Leave
Paid Holidays
Hybrid Work Options
Wellness Program
Growth & Insights and Company News
6 month growth
↑ 5%1 year growth
↑ 5%2 year growth
↑ 5%GDIT President Amy Gilliland out after nearly decade-long run. By Nate Doughty - Staff Reporter, Washington Business Journal Oct 2, 2026 Updated Oct 2, 2026 3:36pm EDT Preview this article 1 min Paul Nedzbala takes over as interim president after Gilliland's departure. Don't Stop Here - Continue Reading For $1 Per Week Secure 4 weeks of award-winning news and trusted insights Subscribe for only $4
Defense Business Brief: Here comes the quantum boom; GDIT's perspective; and Sec. 889. Business Editor September 24, 2026 06:15 AM ET The benefits of quantum technology could hit the mainstream sooner than you think - at least that's what one company is aiming for. "We're actually really hoping in the next year or two [to] release these as products that people can buy and integrate into their cybersecurity protocols," said Mehdi Namazi, co-founder and chief science officer of the quantum networking company Qunnect. But the products aren't "that futuristic." Quantum is usually discussed as being able to one day break encryption and help discover new drugs. But Qunnect is betting that commercial quantum technologies for telecommunications networks could be ready sooner rather than later, according to newly released research. Several focus on authentication, including a quantum position verification process that allows you to verify the position and time of a transaction, providing a physical receipt, Namazi told Defense One ahead of the Quantum World Congress event outside of Washington, D.C. That could unveil the true source of a phishing call that is pretending to be your bank, for example. Another example is quantum channel protection, where "entanglement networks can supplement post-quantum encryption to perfectly protect and monitor the communication networks to make sure no one is eavesdropping, no one is harvesting the data," he said. It also protects against redirecting traffic on the network. Qunnect counts In-Q-Tel, an investment firm focused on intelligence and national security needs, as one of its backers. Background: DARPA has previously explored entanglement networks through its Quantum Augmented Networks effort, but has recently become more vocal about it. Following a White House executive order, the Pentagon released its quantum strategy, which focuses on network modernization, such as integrating secure commercial products and using quantum-resistant devices. It also named 2030 as the deadline for all Pentagon systems to support post-quantum cryptography. That method of using entangled photons or particles, known as quantum entanglement, can also aid in precise time synchronization, which could be used for future telecommunications networks, including 6G. Precision would drill down to one trillionth of a second, "which you usually need for financial transactions, defensive systems - places that you really, really care about the security and the accuracy of your network," Namazi said. But there are challenges, particularly in making sure the technology is compatible with existing telecommunications infrastructure. "These are hardware-based technologies. So, as much as we build everything to be compatible with the telecommunications infrastructure - which they are - this still means that you do need to go and add devices to different locations," Namazi said. "And when it [comes] to devices that you use for your cybersecurity, you usually want them to be manufactured [domestically]...in very large quantities, in form factors that make sense. That's definitely still a challenge." You've reached the Defense Business Brief, where Defense One dig into what the Pentagon buys, who they're buying from, and why. Send along your tips, feedback, and song recommendations to [email protected]. Check out the Defense Business Brief archive here, and tell your friends to subscribe! Bigs v. littles: quantum edition. Last week, I had the pleasure of interviewing Amy Gilliland, president of GDIT, onstage at NDIA's Women in Defense conference. When I asked her how GDIT was navigating a changing dense industrial base with startups getting more interest, in some cases, than primes, she said: "It is our job to go out and find these companies and to show them how we can bring them to the mission." * Gilliland, who received a "Service to the Flag" award at the event, named the quantum company IonQ as an example. * "These are companies with great ideas. A lot of times they have no certification or accreditation, but they have really great ideas," she said. "They have a lab at the University of Maryland...They have a big clock in there that's ticking down to when they think Q-Day is," the day quantum technology would be able to crack the encryption protecting some of the world's most secure systems. * "They're making great progress. And it is our job to bring the big brains that are in this quantum company to bear on programs." * That includes an intelligence contract in which GDIT is using quantum computing to look through imagery and "detect the tiniest of changes...so we can see what the enemy is doing in ways that conventional computers can't today," she said. Remember the Huawei ban? The Pentagon and General Services developed processes and tools to comply with Section 889 of the 2018 National Defense Authorization Act, including a search function for contracting officers to find out how companies "represent their compliance," the Government Accountability Office wrote in a report released Tuesday. But they don't routinely share those insights with the rest of the federal government. * "GSA and DOD do not broadly share their insights from implementing Section 889 prohibitions with other government agencies," the report states. "For example, based on its experience with Section 889 prohibitions, GSA has plans to expand its use of customs data to identify the origin of goods, which GAO previously reported is difficult to do. By sharing information about their experience with current prohibitions, GSA and DOD could help other agencies address additional upcoming statutory prohibitions, such as on semiconductors. Sharing information could also help improve compliance." * The GAO issued four recommendations, two for DOD: to share "subsidiary and affiliate information it collects with relevant federal agencies," including the Cybersecurity and Infrastructure Security Agency; and coordinate with federal agencies on Sec. 889 implementation. * AEVEX has a new jet-powered drone called Scepter. * Holland & Knight added Ike Blanton to its national security team. He previously led global investment and economic security out of the Pentagon's acquisition and sustainment office. * John Roche, Accenture's managing director for defense, joined the Professional Services Council's board. * The Space Force awarded Impulse Space a $28 million contract for space domain awareness. * BAE Systems delivered two prototype combat vehicles to the Army. The "Infantry Fighting Vehicles" are based on the Armored Multi-Purpose Vehicle chassis and are designed to combat drone threats. * The Special Competitive Studies Project released its tech scorecard on biotechnology and the U.S. competition with China.
Chartis says healthcare economics and AI are driving a new care model. * Published on Sep 23, 2026 Demographic pressure, worsening healthcare economics, AI-enabled clinical innovation, and rising private investment are converging to push the U.S. healthcare system toward a different model of care, according to a new Chartis report. In a business-as-usual scenario, the firm projects that the median nonprofit health system's operating margin could fall from 1.5% to negative 9.6% over the next decade. One in five Americans will be 65 or older by 2035, while the population age 85 and older is projected to grow by nearly 60%, according to the report. Older adults are expected to drive nearly all of the increase in healthcare utilization over the next decade. AI adoption has also reached significant scale. Chartis said 80% of physicians report using AI professionally, with more than three-quarters saying it improves their ability to care for patients. Healthcare also accounted for 43% of enterprise spending on vertical AI applications in 2025, investment that Chartis said is helping accelerate adoption. Cindy Lee, Chief Strategy Officer and report co-author, said, "Incremental change won't be enough." She pointed to agentic AI as one way organizations are pursuing reductions in costs and improvements in clinician experience. Chartis calls the emerging model HealthCare360. The report argues that technology should enhance rather than replace the clinician-patient relationship while healthcare organizations address access, affordability, quality, safety, and responsible AI governance. Anneliese Gerland, Senior Vice President of Strategy and report co-author, said a fundamentally different care model is moving "from possibility to necessity." She said organizations that redesign care delivery and responsibly integrate AI will be better positioned to meet growing demand while addressing quality and financial sustainability. Government GDIT named OpenAI Select Partner to modernize federal systems. GDIT has been named an OpenAI Select Partner in a collaboration focused on bringing AI... Technology TCS selected to harmonize METRO's IT application landscape. TCS has been selected by international wholesaler METRO as a strategic partner to simplify its... Government Booz Allen finds AI models can execute end-to-end cyber intrusions. Booz Allen has released a new report finding that advanced AI models can now carry... PwC and Palantir expand alliance across enterprise AI, M&A, and ERP. PwC and Palantir are expanding their strategic alliance across three areas: scaling enterprise AI, transforming...
GDIT taps retired Maj. Gen. Ryan Heritage as VP, full spectrum cyber. General Dynamics Information Technology has appointed retired Maj. Gen. Ryan P. Heritage as vice president, full-spectrum cyber. Heritage will help bring GDIT's full-spectrum cyber expertise to government missions, lead the cyber center of excellence and help grow the company's cyber workforce. "Government agencies need mission-ready and adaptive cyber solutions faster than ever," said Ben Gianni, senior vice president and chief technology officer at GDIT. "For decades, Ryan has executed the nation's most sensitive missions at the highest levels of command. His expertise will enable us to further strengthen our cyber capabilities and help our customers stay ahead of evolving threats." Heritage brings over 35 years of experience leading tactical and strategic level operations. He was most recently director of operations at U.S. Cyber Command, where he oversaw full-spectrum joint and combined cyberspace operations and cyber readiness across the Department of War. He has also served as commanding general for the Marine Corps Forces' Cyber, Space and Information Commands. Heritage joins as GDIT expands its federal cyber work, including recent Army National Guard and Air Force awards valued at $1.3 billion and $120 million, respectively. "As cyber threats grow exponentially and become more complex every day, the margin for error is shrinking," Heritage said. "GDIT's cyber expertise runs deep, and we have experienced employees across the company who tackle the hardest mission problems every day. I look forward to bringing that expertise together and enabling the rapid delivery of integrated solutions across all domains." Staff Writer WashingtonExec celebrates the people, programs, and milestones shaping the Washington, D.C. government contracting community. Join 30,000+ leaders who start their day with The Daily. Our latest executive profiles, council news, and GovCon headlines - every morning.
GDIT debuts Everest Zero Trust offerings for government IT. by Miles Jamison September 10, 2026, 11:45 am * GDIT's Everest portfolio includes Clarity, Flex and Unified offerings for different zero trust needs * The portfolio has been deployed in more than 40 mission environments * Everest is used at 187 installations worldwide supporting more than one million Department of the Air Force users General Dynamics Information Technology has launched its Everest Zero Trust portfolio to help the Department of War and government agencies implement zero trust capabilities while retaining existing IT infrastructure. The General Dynamics business unit said Wednesday the portfolio is designed for agencies that have already invested in zero trust measures but face industry offerings that require replacing existing technology. What does GDIT's Everest portfolio include? The portfolio, aligns with the GDIT's Vision, Innovation and Acceleration strategy, has three offerings: Clarity, Flex and Unified. Clarity focuses on an agency's IT environment and provides an implementation plan for zero trust adoption. Flex gives government agencies a modular option that works with infrastructure already in place and follows an agency's zero trust roadmap. Unified is intended for new IT systems and warfighting environments that lack zero trust capabilities. According to GDIT, the Everest portfolio became the first program to pass a government "red team" cyber assessment on an updated IT system, a test meant to show the system can hold up against advanced cyberattacks. Where has GDIT deployed the technology? The Everest Zero Trust offerings have been deployed in over 40 mission environments. The portfolio is currently used in 187 installations worldwide, providing support to more than one million Department of the Air Force users. GDIT previously received a $120 million Air Force task order to deliver its Everest Zero Trust Digital Accelerator under the service's Next Generation Gateway program. The company also provides cybersecurity services to the Army National Guard. The portfolio is designed to verify users and devices before they receive access to sensitive data, assets and services. GDIT Senior Vice President for Defense Brian Sheridan said the offerings are designed for government customers that need zero trust capabilities tailored to their mission environments. The Everest portfolio is part of GDIT's broader mission technology portfolio and aligns with the company's Vision, Innovation and Acceleration strategy. The company has also expanded its cybersecurity work through partnerships such as its June collaboration with Splunk, which included developing zero trust offerings for federal government customers.