Sr. Security Engineer

Description

Job Title: Senior Security Engineer 

Location: Ashburn, VA

Terms: Fulltime, onsite position. 

About Chartis Federal

Chartis Federal is a premier systems engineering and integration firm specializing in mission-critical IT and communications solutions for law enforcement, homeland security, and defense. As a trusted prime contractor with over $160 million in task order awards, we operate across 22 states and support essential government missions worldwide.

Our commitment to excellence has fueled our year-over-year growth, earning us recognition twice as a Washington Technology FAST 50 company and securing a place on the Inc. 5000 list for five consecutive years. At Chartis Federal, our mission is clear: keeping heroes safe and connected—on the battlefield, on the border, and in our backyards.

Position Overview

We are seeking a Senior Security Engineer to lead vulnerability management, network security, and compliance efforts within our organization. This role requires a deep understanding of Tenable Nessus, DISA STIG compliance, and advanced network security troubleshooting. The ideal candidate will have strong analytical skills, the ability to develop security automation scripts, and expertise in security testing methodologies. 

Duties and Responsibilities 

• Analyze security vulnerabilities with Tenable Nessus. Candidate should have significant experience with creating policies, scans, and troubleshooting Nessus issues. 
• Ensure that systems comply with DISA Security and Technical Implementation Guides (STIGs). Provide step-by-step guidance to operations & maintenance on how to harden systems to meet compliance.
• Candidate must be able to provide security expertise during weekly status updates, executive briefings, or presentations.  Candidate must have significant experience with using Microsoft Excel.
• Research, troubleshoot, and solve various technical networking problems.
• Candidate must be able to review and generate technical process guides. Author technical whitepapers and CONOPS.
• Candidate must have experience with troubleshooting issues in existing IP networks. Should be very comfortable with using Wireshark and Nmap.
• Candidate must have experience developing Python and/or PowerShell scripts to analyze trends & automate tasks.
• Candidate should have experience with Identity, Credential, and Access Management.
• Conduct security testing of new equipment in the lab as necessary, following existing security methodology. 
• Analyze the security of mobile applications and ensure they comply with federal guidelines & industry best practices.

Requirements

• Bachelor’s degree in electrical or computer engineering, mathematics, or computer science is required. 
• Must have Tier 4 Secret Clearance / Top Secret required to convert to DHS Tier 4 Background Investigation
• CISSP, CISA, or CCSP certifications are desired.
• 5+ years’ experience in information security and networking, supporting medium-to-large size networks made up of diverse assets.
• Security compliance and networking experience.
• Security risk assessment & remediation experience.
• Python or other scripting languages. Ability to script and code is highly desired. Also, able to manipulate data in Excel.
• Experience with Juniper or Cisco firewalls.
• Experience analyzing data from tools such as Splunk, SolarWinds, Device42 or other log and IP Asset Management tools.

Why Join Chartis Federal?

We offer a competitive compensation and benefits package, including:

• Comprehensive health insurance (medical, dental, vision)
• Retirement plans with company contributions
• Professional development opportunities and career growth support
• A dynamic and collaborative work environment where your contributions are valued

At Chartis Federal, we believe in fostering a culture of excellence, integrity, and innovation while supporting critical national security missions.

Join us in shaping the future of government contracting and national security solutions.

Chartis is an equal opportunity employer and employs qualified individuals regardless of race, religion, color, sex, national origin, age, disability, or any other classification proscribed under applicable law. We participate in E-Verify.