Computer Network Defense Analyst

TDI (Tetrad Digital Integrity); Arlington (VA); On-site; USD 110,000 - 120,000; Full time

Job summary

Tetrad Digital Integrity (TDI) seeks a Cyber Network Defense Analyst for the CESO program in Arlington, VA. This onsite role requires active TS/SCI clearance with CI Poly and DoDD 8140 IAT II certification, to support 24x7 network defense, monitoring, and incident response.

You will detect and respond to threats, document events, coordinate with infrastructure teams, and help transition CESO to a secure cloud environment while maintaining customer-facing duties. Salary range: $110,000–$120,000.

Qualifications

• Active TS/SCI clearance with ability to obtain a CI polygraph.
• Bachelor's degree and 2+ years of related cybersecurity experience.
• DoDD 8140 compliant certification at start (IAT Level II or equivalent).
• Strong networking knowledge across Windows, Red Hat, and cloud environments (AWS/Azure).
• Experience implementing security settings per vendor and DISA best practices.

Responsibilities

• Perform incident detection and response to identify threats within the CESO enterprise.
• Monitor security tools, investigate alerts, and suggest remediation steps.
• Document security events clearly in the ticketing system for action.
• Engage with customer onsite with minimal supervision, coordinating with teams.
• Assist with forecasting and modeling current threats and adapting defenses as CESO moves to cloud.
• Collaborate with infrastructure, storage, database, and application teams to align defenses with CESO requirements.

Skills

TS/SCI clearance

IAT Level II (Security+ CE)

Networking expertise

Windows/Red Hat

AWS/Azure cloud

Education

Bachelor's degree

2+ years experience

Tools

IDS/IPS

Firewalls

Security tools

Job description

Tetrad Digital Integrity (TDI) is a leading-edge cybersecurity firm with a mission to safeguard and protect our customers from increasing threats and vulnerabilities in this digital age.
TDI is seeking a Cyber Network Defense Analyst to join the Compartmented Enterprise Services Office (CESO) effort. This program is establishing a modern secure web service (SWS) operation as part of a state-of-the-art, highly automated platform capable of supporting a rapidly expanding customer population. Our team supports CESO's mission to protect networked systems and services from cyber threats as CESO migrates to a high security cloud environment, operating as a 24x7, mission-critical function providing network defense, monitoring, and incident response services. We are looking for a self-starter capable of independently performing daily tasks while also working well within a team that requires significant coordination and communication.

Multiple positions are available, including day-shift opportunities in Arlington, VA, and night-shift opportunities in San Antonio, TX. All positions are fully onsite and require an active TS/SCI clearance.

RESPONSIBILITIES

• Perform computer network incident detection and response activities to detect, correlate, identify, and characterize anomalous activity indicative of threats to the CESO enterprise
• Monitor security tools and applications for potential malicious activity, investigate associated alerts and indicators, and recommend appropriate courses of action, including mitigation strategies as required
• Document security events and associated analysis in a ticketing system using clear and accurate technical writing to support appropriate review and action
• Maintain regular face-to-face interaction with the customer and address customer-raised issues with little or no supervision
• Perform system checks in a timely manner and ensure all associated documentation is complete and accurate
• Assist senior analysts and/or managers with forecasting and modeling current threats
• Collaborate with infrastructure, storage, database, and application teams to align network defense monitoring with CESO operational requirements as the program transitions to a secure cloud environment

QUALIFICATIONS

• Candidate must currently have a TS/SCI with the ability to obtain and maintain a CI Poly.
• DoDD 8140 compliant certification, at minimum IAT Level II (e.g., Security+ CE), at start
• Bachelor's degree and 2+ years of related experience; additional experience, education, or training may be considered in lieu of degree
• Strong knowledge of computing systems, including Windows, Red Hat, and cloud environments (AWS and Azure), with particular expertise in networking, communication protocols, and common security technologies such as IDS/IPS systems and firewalls
• Experience implementing application and hardware security settings in accordance with vendor and DISA best business practices

PAY RANGE:

The anticipated salary range for this position is $110,000 - $120,000. This range is a good-faith estimate and not a guarantee of compensation. Final compensation will be based on factors including experience, education, skills, geographic location, internal equity, market data and applicable contract requirements, and may fall outside the posted range.