Cyber Network Defense Analyst

Job Description

Job Description

Description

We are currently 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.

This position is based in Arlington, VA and is 100% on-site.

Requires a TS/SCI US Government Security Clearance to start.

Primary 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 possible malicious activity, investigate associated alerts or indicators, and develop recommendations for a course of action, including mitigation strategies as required.

Document each event and its associated analysis in a ticketing system with clear, accurate technical writing so it can be reviewed and acted on appropriately.

Maintain regular face-to-face interaction with the customer; handle issues when they are raised by the customer with little or no supervision.

Positively influence team performance by improving CESO processes and procedures.

Ensure system checks are performed in a timely manner and that documentation is complete and accurate.

Assist senior analysts and/or managers with forecasting and modeling current threats.

Develop a strong rapport with the customer and serve as a trustworthy network defense analyst.

Collaborate with infrastructure, storage, database, and application teams to align network defense monitoring with CESO's operational requirements as the program transitions to its secure cloud environment.

Skills

Intrusion detection system, Ts/sci, Incident response, cyber defense, threat detection, STIG

Top Skills Details

Intrusion detection system,Ts/sci,Incident response,cyber defense,threat detection,STIG

Additional Skills & Qualifications

Basic Qualifications

Bachelor's degree and 2+ years of related experience; additional experience, education, or training may be considered in lieu of degree.

Active TS/SCI security clearance required for this position.

DoDD 8140 IAT Level II (or Level III) certification (e.g., Security+ CE).

Strong computing systems knowledge with Windows, Red Hat, Cloud (AWS, Azure), and particularly networking, including communication protocols and familiarity with common security elements such as IDS/IPS systems and firewalls.

Experience with implementing application/hardware security settings using vendor and DISA best business practices.

Candidate may be asked to obtain a CI Polygraph in the future.

Preferred Qualifications

Prior CND experience, ideally within a large enterprise or DoD/IC program environment.

Experience monitoring intrusion detection and computer network defense appliances, applications, and analyzing associated alerts.

Experience documenting analysis and providing response recommendations in a ticketing/case management system.

Experience reviewing system logs manually and using automatic SIEMs tools (e.g., SPLUNK, Elastic) and performing network log analysis.

Prior experience with DISA and DISA's support to mission partners.

An Understanding of disaster recovery and business continuity concepts as they apply to secure cloud migrations.

Experience Level

Intermediate Level

Job Type & Location

This is a Contract to Hire position based out of San Antonio, TX.

Pay and Benefits

The pay range for this position is $60.00 - $65.00/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)

Workplace Type

This is a fully onsite position in San Antonio,TX.

Application Deadline

This position is anticipated to close on Oct 9, 2026.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

Were a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. Were a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. Were strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. Were building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.