Job Title: Cyber Threat Hunter (TS/SCI Clearance Required) About Trellix Trellix is a global company redefining the future of cybersecurity. The company’s comprehensive, open, and native cybersecurity platform helps orga…
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Northrop Grumman Mission Systems, Inc.
Systems Integration & Test Engineer - Level 3/4
Fairfax, Virginia, United States · On-site
$104k–$213k/yr
Senior
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CACI
Data Scientist - AI/mL Specialist
Fairfax, Virginia, United States · On-site
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Senior
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Background Investigator (FT Employee) - Fairfax, VA
Fairfax, Virginia, United States · Hybrid
Mid level
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Full-time
bachelor degree, associate degree, professional certificate
Retirement Plans, Medical Coverage, Dental Coverage, Vision Coverage, Paid Time Off, Paid Parental Leave
Posted 21d ago
~40 hrs/week
Responsibilities
Develop and deliver detailed IT security solutions and threat hunting plans for public sector clients. Responsibilities include identifying threats, refining TTPs, and coordinating with cross-functional teams to enhance security architecture.
Requirements
Requires 5+ years of threat hunting experience, an active Secret clearance (eligible for TS/SCI), and a DoD 8570/8140 compliant certification. A bachelor's degree or equivalent specialized experience is required.
Full job description
Job Title:
Cyber Threat Hunter (TS/SCI Clearance Required)
About Trellix Trellix is a global company redefining the future of cybersecurity. The company’s comprehensive, open, and native cybersecurity platform helps organizations confronted by today’s most advanced threats gain confidence in the protection and resilience of their operations. Trellix, along with an extensive partner ecosystem, accelerates technology innovation through artificial intelligence, automation, and analytics to empower over 50,000 business and government customers with responsibly architected security. More at https://trellix.com.
Role Overview:
Develops and delivers detailed IT solutions through consulting project activities. Responsibilities include client identification through final invoicing for engagements requiring varied interpersonal and technical skills. Technical responsibilities include problem identification, system architecture definition, hardware/software specification and/or design, implementation, testing, client training, and solution deployment. Performance is typically evaluated based on utilization, (i.e., billable hours). Project management activities include interaction with company and client managers and schedule monitoring. May participate in sales and proposal presentations in addition to completing ongoing team account activities. Identifies additional product/services opportunities in customer organization. Performance is typically measured by the capture of the consulting engagement and/or delivery of agreed solutions within budgeted hours. The ideal candidate will have a strong background in threat hunting and cyber defense, with the ability to develop and refine Tactics, Techniques, and Procedures (TTPs) to outpace evolving threats. This position also requires clear documentation and close coordination with cross-functional teams to enhance security policies, tools, and architecture based on threat insights.
Job Title:
Trellix Professional Services Security Consultant (Public Sector)
Work Location:
Onsite Fort Belvoir, VA
Role Overview:
Role: Trellix Security Professional Services Consultant
Location: Fort Belvoir, VA
Clearance Required: TS/SCI
Up to 25% Travel Required
Company Overview:
Trellix is a global company redefining the future of cybersecurity. The company’s open and native extended detection and response (XDR) platform helps organizations confronted by today’s most advanced threats gain confidence in the protection and resilience of their operations. Trellix’s security experts, along with an extensive partner ecosystem, accelerate technology innovation through machine learning and automation to empower over 40,000 business and government customers. More at https://trellix.com.
About the role:
This is a Full time onsite role at Fort Belvoir, VA in a classified environment. You will be responsible for developing and delivering detailed IT solutions through consulting project activities from client identification through to final invoicing. Works on complex problems where analysis of situations or data requires an in-depth evaluation of various factors. Exercises judgment within broadly defined practices and policies in selecting methods, techniques, and evaluation criteria for obtaining results. Work leadership may be provided by assigning work and resolving problems.
As a Professional Services consultant, you will be responsible for consulting project activities from project initiation through project completion and final invoicing. A Professional Services consultant is expected to interface with internal and external customers and is expected to develop professional relationships that will enable him to achieve his goals.
Among the tasks that a PS consultant will be expected to deliver, are:
Manage and perform client work, related to our product service’s offerings.
Create end of engagement reports describing engagement findings and analysis work.
Help develop and maintain intellectual capital within Solution Services around our product line.
Help identify and implement improvements in existing processes and procedures.
Maintain technical proficiency through self-training or formal training.
Help identify and develop new clients and expert services engagements.
Provide knowledge sharing throughout the Solution Services team.
Mentor consultant peers in new techniques, tools and other job skills.
Deliver training when required.
Possible helping update and/or create training course material.
Interaction with company and client managers and cost/schedule monitoring and estimating, proposal generation and invoicing.
May participate in sales and proposal presentations in addition to completing ongoing team account activities.
About the candidate:
Understanding of cyber threats, attack vectors, detection capabilities, and associated countermeasures
Experience working in a Security Operations Center to monitor security alerts, respond and remediate detected issues is preferred
Clear understanding of organizational Incident Management processes in relation to threats and vulnerabilities
Knowledge and experience creating detailed Threat Hunting plans, briefings and reports.
Analyze configurations for vulnerabilities, recommend mitigations, use network tools to assess risks, and assist in malware removal during incidents.
Maintain a deep knowledge of Trellix Endpoint Security, Application Control/Change Control, ENS, TIE, DXL, DLP, HX, IVX.
Experience in Windows, Mac, Linux OS and application hardening, including understanding artifacts and behaviors.
Experience with one or more scripting languages: Python, PowerShell, Go, C#, other command line scripting or similar is preferred.
You may have experience scripting API integrations with response and orchestration tools like SIEM, SOARs and/or XDR platforms
Experience with a SIEM tool and working with SIEM Analyst.
Experience with event correlation and analysis.
Demonstrated technical proficiency in cybersecurity operations, cybersecurity engineering, systems engineering
Experience with Virtualization (VMWare, Nutanix, etc.) and Cloud Services [i.e., AWS, Azure]) and enterprise networks.
Characterize and analyze network traffic to identify anomalous activities or potential threats using packet-level and protocol analysis tools.
Deliver onsite and remote security application/endpoint protection designs, implementations, training, and knowledge transfer for a wide variety of customers.
Be able to identify gaps in application and network security architecture and recommend strategies using a combination of industry-standard security best practices, software controls and other necessary changes to promote a higher level of information security practices.
Author formal reports, architecture designs, optimization guides, and best-practice white papers covering a variety of security topics.
Participate in conference calls, onsite meetings and roundtables with customers, sales, internal product development and support to gather data, scope new and existing work, evaluate or suggest new product features and assist in resolving existing product issues.
Recognize and generate potential product and consulting services sales leads when appropriate and necessary.
Detailed understanding of the TCP and IP protocol suites and ability to dissect and explain the contents of traffic and packets.
Experience with configuration of debugging, event generation, and logging functionality within the application and operating systems, using Syslog or flat-file generation.
Required Qualifications:
5+ years of Threat Hunting experience or similar Federal Government Enterprise capability
Currently hold an adjudicated Secret Clearance and qualify for a TS/SCI clearance
BA/BS +4 years recent specialized or AA/AS +6years recent specialized or a major cert + 8 years recent specialized
Active DoD 8570 or DoD 8140 compliant cybersecurity certification
Advanced Proficiency in Microsoft Office Suite products (Word, Excel, PowerPoint)
Preferred Qualifications:
Knowledge of DoD IT RMF, USCYBERCOM, IC and JFHQ-DoDIN
Proficiency with Microsoft SCCM and/or other automatic reporting tools
Adaptable to changing circumstances and operational needs
Understanding of Department of Defense Military and Federal Government Agency standards
Experience with Federal Government and DoD IT security requirements
Company Benefits and Perks:
We believe that the best solutions are developed by teams who embrace each other's unique experiences, skills, and abilities. We work hard to create a dynamic workforce where we encourage everyone to bring their authentic selves to work every day. We offer a variety of social programs, flexible work hours and family-friendly benefits to all of our employees.
Retirement Plans
Medical, Dental and Vision Coverage
Paid Time Off
Paid Parental Leave
Support for Community Involvement
We're serious about our commitment to a workplace where everyone can thrive and contribute to our industry-leading products and customer support, which is why we prohibit discrimination and harassment based on race, color, religion, gender, national origin, age, disability, veteran status, marital status, pregnancy, gender expression or identity, sexual orientation or any other legally protected status.
Our Commitment to You:
At Trellix, we are committed to creating a safe and trustworthy experience for our customers, employees, and candidates. Please be aware that fraudulent recruiting activity can occur through fake job postings or impersonated communications.
Trellix conducts interviews through professional channels only and does not use text messages, instant messaging, or group chats for interviews. We will never request sensitive personal information—such as your date of birth, Social Security number, or national ID number—during the interview process.
Trellix also does not require candidates to pay fees, purchase products or services, or process payments of any kind as part of the recruiting or hiring process. And Trellix will never keep any original work authorization documents that we may be required to review during the hiring process.
Mission-critical security for intelligence-led cyber resilience
Industry
Computer and Network Security
Company size
1,001-5,000 employees
Founded
2022
Headquarters
Plano, Texas
LinkedIn followers
501,075
Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey. Transforming over 30 years of threat intelligence into high-fidelity detections and automating AI-driven detection and response across cloud, on-premises, air-gapped, and operational technology environments, Trellix helps customers adapt to the constantly evolving threat landscape. More at https://trellix.com.
Offices: Plano, Texas, US
Information TechnologyCyber SecurityAppsWeb DesignSoftwareNetwork SecurityWeb Apps
How much do Security & Safety jobs in Fairfax, VA pay?
Based on 105 listings with disclosed salaries, most security & safety jobs in Fairfax, VA pay between $52k–$195k per year. Individual offers vary with seniority, company size, and specialization.
How many Security & Safety jobs are open in Fairfax, VA right now?
There are currently 152 open security & safety positions in Fairfax, VA listed on Clera. New openings are added daily as companies post roles.
Which companies are hiring for Security & Safety roles in Fairfax, VA?
Companies currently hiring include ECS Tech Inc, CACI International Inc, SOSi, Shelter House, Inc, Mission Technologies, a division of HII, among others. Browse the listings above to see every active employer.
Are there remote or hybrid Security & Safety jobs in Fairfax, VA?
Yes — 30 of the 152 open security & safety positions offer remote or hybrid work (11 remote, 19 hybrid).
How do I apply for Security & Safety jobs in Fairfax, VA?
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.