Jobs at Treeline Security

The Security Operations Center Operator role is based in San Juan, Puerto Rico, within Optum's global business operations team. The position involves monitoring intrusion alarms, AI-driven video analytics, and access control systems in a 24/7 environment to safeguard people and assets. Key responsibilities include triaging alerts to minimize false positives, coordinating responses with on-site security and law enforcement, and maintaining detailed incident documentation while adhering to strict confidentiality standards. This role appeals to candidates seeking a mission-driven environment where their work directly improves health outcomes. It offers opportunities for professional growth within a culture of inclusion and provides clear career development paths. The position requires fluency in English and Spanish and involves rotating shifts including nights, weekends, and holidays.

This full-time Manager Security 3 role within Northrop Grumman's Enterprise Security Shared Services leads the Personnel Security Center and oversees the company's industrial security program at the Irving, Texas facility. The position requires managing a team of security professionals, administering personnel security clearances in compliance with NISPOM and federal regulations, and overseeing physical security, visitor control, and emergency preparedness. Key duties include reducing investigation turn-times through centralized records management, conducting security audits, and presenting status reports to senior leadership and government stakeholders. The role offers the opportunity to work on revolutionary defense systems within a culture that values intellectual curiosity and innovation. While the position is hybrid with 25% travel required, it provides a dynamic environment for experienced leaders to make history while fostering an inclusive and collaborative work atmosphere.

This Security Training and Awareness Specialist role supports a critical infrastructure operator within Peraton's Cybersecurity Operations Center. The position focuses on designing and managing comprehensive cybersecurity training programs for employees and contractors. Key responsibilities include developing role-based training materials, overseeing phishing simulations, analyzing user behavior metrics, and collaborating with IT and HR teams to align security awareness with organizational risk. The role offers the opportunity to work in a mission-critical environment protecting national assets from nation-state attacks while contributing to a culture of security. Candidates will engage with advanced threat data to create engaging content and ensure compliance with federal regulations. The position requires a security clearance and is based on-site with potential travel for workshops or drills.

This Network Security Architect role within Verizon's GN&T Network Security team focuses on defending Core, Edge, and Access networks through advanced security architecture and real-time threat detection. Key responsibilities include leading incident response efforts, managing the vulnerability management lifecycle, and utilizing SIEM tools like Splunk for proactive threat hunting and automation. The position involves designing robust security solutions, creating operational policies, and collaborating across engineering organizations to embed secure design patterns. The role appeals to candidates seeking a collaborative culture that values innovation and continuous learning, offering a hybrid work arrangement with a mix of remote flexibility and in-office collaboration.

This full-time Risk and Vulnerability Analyst role supports a 24x7 Security Operations Center at Peraton, a leading national security integrator. Based in Chandler, AZ, or Washington DC, the position requires an active Secret clearance and focuses on identifying and prioritizing security risks across enterprise, cloud, and application environments. Key responsibilities include executing vulnerability assessments using industry-standard tools, correlating threat data with active incidents, and automating reporting workflows to ensure compliance with federal standards like NIST and CISA. The role appeals to candidates seeking to protect national infrastructure while working within a collaborative team that solves critical challenges. Opportunities for professional growth exist alongside a comprehensive benefits package and a mission-driven culture dedicated to global security.

This Model-Based Systems Engineering role supports a strategic national security mission to design an integrated architecture for Ballistic Missile Defense across multiple Intelligence Community centers. The position involves providing on-site engineering support at locations including Huntsville, Suitland, and Dayton, while developing high-fidelity SysML models and DoDAF-compliant views for foreign missile and command and control systems. Key responsibilities include collaborating with senior government stakeholders to drive MBSE standardization and producing technical documentation for system analysis. The role offers the opportunity to shape the future of defense systems analysis with a tangible impact on national security. Candidates must hold an active TS/SCI clearance and possess extensive experience in systems engineering and MBSE tools.

This full-time Security Engineer role supports a large-scale web-based government application within Peraton's national security division. The position focuses on implementing and sustaining a comprehensive security posture aligned with NIST SP 800-53, SOC 2 Type II, and OWASP Top 10 standards. Key responsibilities include designing security controls, managing Web Application Firewalls, overseeing encryption protocols, conducting software composition analysis, and leading incident response activities. The role appeals to professionals seeking to protect critical infrastructure while working in a mission-driven environment that values rigorous compliance and data sovereignty. The position is remote but requires residence in Oregon or Washington to facilitate occasional onsite travel near Salem, Oregon.

This Information Systems Security Officer role supports Peraton's national security mission by managing Risk Management Framework processes for Department of Defense systems. The position requires deep technical expertise in NIST SP 800-53 controls, STIG remediation, and vulnerability analysis using tools like ACAS and Splunk. Key responsibilities include developing Security Test Procedures, maintaining Security Controls Traceability Matrices, and authorizing ATO documentation such as SSPs and POA&Ms. The role offers the opportunity to work on critical missions protecting national interests while collaborating with government stakeholders and engineering teams. Peraton provides a supportive environment with heavily subsidized benefits, 25 days of annual PTO, and a bonus plan. The position requires an active TS/SCI clearance and is based on-site or hybrid depending on specific contract requirements.

This mid-level Personnel Security Specialist role at Amentum supports the FBI and US government by conducting security assessment investigations and determining employment suitability. The position involves reviewing complex background investigation files, analyzing personal history data for security risks, and preparing detailed reports and recommendations for clearance adjudication. Key responsibilities include conducting interviews, verifying information from various databases, and delivering security briefings on threat awareness. The role offers the opportunity to work on high-impact national security challenges within a global organization that values collaboration and innovation. While the position requires an active Top Secret clearance and is based in a traditional office environment, it provides a stable career path with access to comprehensive benefits and professional growth in a mission-driven setting.

This Information Systems Security Officer role supports the SITEC-3 program at MacDill AFB, serving USSOCOM and related commands. The position focuses on managing the Risk Management Framework lifecycle, conducting IT risk and control assessments, and ensuring compliance with federal standards like NIST 800-53 and FISMA. Key responsibilities include performing vulnerability management, developing security documentation such as System Security Plans, and communicating assessment results to senior leadership. The role offers the opportunity to work on critical national security missions within a collaborative team environment. Candidates must hold an active DoD TS/SCI clearance and possess relevant cybersecurity experience. The position is based on-site at MacDill AFB.

This part-time Information Systems Security Officer role supports the Cyber Mission business unit at Peraton's Fort Meade location. The position involves managing information assurance programs for a major Intelligence Community contract, including enforcing security policies, conducting vulnerability assessments, and preparing System Security Plans for authorization. Key responsibilities also include evaluating security solutions for classified processing and ensuring compliance with NISCAP and DIACAP standards. The role appeals to experienced professionals seeking to contribute to national security missions while working on-site with a flexible schedule to meet the 940-hour annual requirement. Candidates must hold an active TS/SCI clearance with polygraph and possess extensive experience in IT security management.

This mid-level Process Assurance Analyst role supports Federal Strategic Cyber programs for Peraton, operating on-site in Arlington, VA, and Washington, DC. The position focuses on managing the full lifecycle of cyber incident reporting, including triaging, tracking, and closing cases while developing standard operating procedures and operational documentation. Key responsibilities involve leading small-scale projects, coordinating across organizational lines, and correlating threat activities to inform senior decision-makers. The role appeals to professionals seeking to contribute to national security missions by strengthening resilience against cyber and physical threats. It offers the opportunity to work within a collaborative environment that values process improvement and technical writing, requiring an active Top Secret security clearance and U.S. citizenship.

The Security Captain role is a leadership position within Amentum's security operations team in the Las Vegas area, responsible for managing comprehensive physical security programs. The individual directs security personnel, oversees daily operations, and ensures strict compliance with Air Force regulations and contractual requirements. Key duties include developing emergency action plans, managing incident response, maintaining equipment accountability, and fostering a culture of professionalism and safety. This position is appealing for its opportunity to lead a dedicated team, drive continuous improvement in security protocols, and work within a mission-focused environment. The role requires a Top Secret clearance and involves on-site management of assets and personnel.

This full-time Lead Installation Technician role focuses on overseeing electronic security system projects for large commercial clients. The position involves leading installation teams, interpreting technical drawings, and executing complex tasks such as rack buildouts, panel terminations, and device configuration. Key responsibilities include managing project timelines, coordinating with site supervisors and stakeholders, troubleshooting access control and surveillance systems, and maintaining detailed project documentation. The role appeals to experienced professionals seeking a leadership position that combines technical expertise with team mentorship. It offers the opportunity to work independently on diverse sites, utilizing advanced low-voltage technologies and powered equipment. The position requires travel and may involve on-site work at active construction locations.

This onsite Graphic Designer role at Peraton supports national security missions in Bethesda, Maryland, focusing on creating high-impact visual content for government and military partners. Key responsibilities include developing graphics, digital media, and cartography, while collaborating with UI/UX designers to ensure user-friendly web and mobile experiences. The position requires managing HTML/CSS implementations, conducting technical quality checks, and ensuring all deliverables meet accessibility and security compliance standards. The role appeals to designers seeking to contribute to critical national defense work within a collaborative environment that values mission-driven innovation. Candidates must hold an active TS/SCI clearance with polygraph and possess strong skills in multimedia production and front-end design.

This full-time Cybersecurity Systems Administrator role supports a critical infrastructure operator within Peraton's 24-hour Cybersecurity Operations Center. The position focuses on securing enterprise networks against nation-state threats while ensuring compliance with federal regulations. Key responsibilities include administering and hardening Windows and Linux security applications, monitoring system logs for security events, managing user access controls, and performing vulnerability assessments. The role appeals to professionals seeking to defend national assets alongside industry leaders in a mission-critical environment. Candidates will benefit from a collaborative culture that values innovation and offers opportunities to work with advanced technologies like Splunk and Palo Alto XSOAR. The position requires U.S. citizenship and an active security clearance, with occasional on-call availability for after-hours support.

The Electronic Technician II role supports the United States Postal Service at the Central Repair Facility in Topeka, Kansas, focusing on the depot-level maintenance of mail processing and delivery systems. The position involves performing component-level repairs on complex electronic and electromechanical assemblies, utilizing specialized test equipment to diagnose and fix printed circuit boards and related hardware. Technicians apply advanced troubleshooting skills to ensure the continued automation of national mail infrastructure while potentially mentoring junior staff. This opportunity appeals to candidates seeking to work on critical national security and logistics missions within a stable government support environment. The role requires a valid security clearance and involves hands-on technical work in a physical facility setting.

This senior cybersecurity engineering role within Peraton's Federal Strategic Cyber group focuses on securing national defense missions across land, sea, space, air, and cyberspace. The position supports a 24x7 Security Operations Center by engineering resilient architectures, implementing Zero Trust controls, and optimizing detection platforms like SIEM and SOAR. Key responsibilities include leading technical responses to complex incidents, mentoring junior engineers, and integrating security into cloud and AI-enabled systems. The role offers the opportunity to work on high-impact national security challenges with a team dedicated to protecting the nation and its allies. Candidates must hold an active Secret clearance and be based in Chandler, AZ, or Washington, DC.

This full-time on-site role at Peraton in Huntsville, Alabama, involves serving as a Battlespace Awareness Operator within a 24/7 government and contractor team. The position focuses on monitoring space domain indications, analyzing satellite data, and safeguarding critical space assets to support national security missions. Key responsibilities include maintaining operational databases for resident space objects, creating daily reports and briefs for leadership, and contributing to course of action planning for space events. The role appeals to candidates seeking to work at the forefront of space operations with a mission-driven organization that protects the nation. Success requires leveraging prior aerospace experience and technical proficiency with tools like Systems Tool Kit to provide actionable intelligence in a high-tempo environment.

This role is a Cyber Systems Administrator position supporting an Intelligence Community customer in Herndon, Virginia, within a classified environment. The position focuses on mid-level operational support for enterprise information systems, requiring hands-on administration of Windows and Linux servers, privileged access management, and security tool operations. Key responsibilities include maintaining system security posture, generating audit evidence for FISCAM and RMF assessments, developing scripts to automate compliance tasks, and utilizing Splunk for log analysis and security monitoring. The role appeals to professionals seeking to work on critical national security missions with a collaborative team of engineers and auditors. It offers a hybrid work arrangement with opportunities for professional growth in a company known for its transformative enterprise IT solutions and comprehensive benefits package.

This full-time CSOC Analyst role supports a critical infrastructure operator in defending networks against nation-state cyberattacks within a 24x7x365 security operations center. The position requires monitoring SIEM, EDR, and SOAR tools to validate alerts, investigate anomalies, and coordinate incident responses across multiple systems. Key responsibilities include analyzing security logs, conducting forensic investigations, and recommending mitigation strategies to enhance the organization's security posture. The role appeals to professionals seeking to protect national assets while working alongside cybersecurity leaders in a mission-critical environment. Candidates must hold a valid security clearance and be available for a rotating shift schedule. The position offers the opportunity to contribute to significant national security missions within a collaborative team focused on safeguarding essential systems.

This on-site Technical Customer Support Representative role supports IT infrastructure operations for the Transportation Security Administration across U.S. airports and international consulates. The position involves serving as the primary point of contact for DHS staff, troubleshooting software, hardware, and network issues via phone and remote diagnostics, and maintaining detailed system documentation. The role appeals to candidates seeking a mission-driven environment where they can contribute to national security while developing their technical skills. The position requires a valid security clearance and availability for rotating weekend and evening shifts in Clinton, Tennessee, offering the opportunity to work within a critical, high-impact government support team.