Senior Security Engineer

Absolute Business Solutions Corp. (ABSc); Bethesda (MD); On-site; USD 110,000 - 225,000; Full time

Benefits offered by this job

401k retirement plan

Health and wellness allowance

Career development funds

Volunteer time off

Charitable matching

Referral program

Awards program

Job summary

Absolute Business Solutions Corp (ABSC) is seeking a TS/SCI-cleared Senior Security Engineer to lead security operations for the DIA-NDOC program under DTP. This on-site role in Bethesda, MD focuses on vulnerability management, RMF/ATO support, and SIEM-enabled monitoring across enterprise and isolated environments.

You will mentor security staff, coordinate cross-team remediation, and ensure DISA STIGs compliance while maintaining a strong security posture in federal environments.

Qualifications

• Bachelor's degree required, 8+ years of relevant DoD/IC security experience preferred, or equivalent.
• Active TS/SCI clearance with polygraph or willingness to obtain one.
• Experience optimizing security performance and latency with end-to-end security requirements.
• Experience with Windows Server, AD, IIS, DNS, DHCP, Exchange, and DFS.
• Experience implementing security controls across distributed sites using DISA STIGs.
• Experience with enterprise security tools (Splunk, ACAS, Nessus).
• Strong ability to document, diagram, and communicate technical designs.

Responsibilities

• Lead day-to-day security operations and set priorities for the security team.
• Provide technical leadership to security personnel and engineers.
• Drive vulnerability management from discovery to remediation and closure.
• Coordinate remediation across Windows, Linux, network, and infrastructure teams.
• Oversee vulnerability scans with ACAS, Nessus, and related tools.
• Implement and validate DISA STIGs and security baselines.
• Support RMF/ATO activities with evidence and documentation.
• Review logs and events with Splunk and other SIEMs.
• Develop repeatable security procedures and report risk and remediation status.

Skills

TS/SCI clearance

Security engineering

Vulnerability management

RMF/ATO

ACAS/Tenable/Nessus

SIEM (Splunk)

Education

Bachelor's degree in CS/IT or related field

Tools

ACAS

Tenable SecurityCenter

Nessus

DISA STIGs

Splunk

McAfee HBSS

Job description

Absolute Business Solutions Corp (ABSC) is not just another tech company. We're a community of innovators, engineers, analysts and business professionals working together with our customers to tackle the most complex challenges. For more than 20 years we've supported critical Department of Defense (DoD), Intelligence Community (IC), Federal Civilian missions and global, multi-national corporations. We specialize in supporting our clients in the Intelligence, Technology, Defense, AI/ML, and Data Science fields. As we continue to grow at a rapid pace, we need some amazing new professionals to join our team.

ABSC has an exciting opening for a TS/SCI-cleared Senior Security Engineer supporting DIA-NDOC under the DTP contract. This hands-on technical lead will direct day-to-day security activities across enterprise and isolated environments, strengthening vulnerability management, security engineering, RMF and ATO support, continuous monitoring, and operational cybersecurity.

The 10-year DOMEX Technology Platform (DTP) program modernizes the secure data, application, and infrastructure capabilities supporting DIA's National Digital Exploitation & OSINT Center (NDOC). The program delivers scalable media processing, data discovery, enrichment, and analytical services that help mission users transform large volumes of digital information into timely, actionable intelligence. Team members work across software development, systems engineering, cybersecurity, platform operations, and mission integration to sustain current operations while delivering the next generation of DTP capabilities.

Work location and schedule: This is an on-site position at the customer site in Bethesda, MD.

Security clearance required for this role: An active TS/SCI with ability and willingness to obtain and maintain a counterintelligence polygraph

Responsibilities

As an integral member of the DTP team, you will work closely with Government stakeholders and cross-functional engineering teams on the following key tasks:

• Lead day-to-day security operations, establish priorities, and assign and track work across the security team.
• Provide technical leadership to security personnel, system administrators, engineers, and other technical teams.
• Lead vulnerability management from identification through analysis, prioritization, remediation, validation, documentation, and closure.
• Coordinate remediation across Windows, Linux, network, desktop, and infrastructure teams and provide hands-on support for complex issues.
• Oversee and perform vulnerability scanning and analysis using ACAS, Tenable SecurityCenter, Nessus, or equivalent tools.
• Oversee implementation and validation of DISA STIGs and approved security baselines.
• Ensure recurring audit-log reviews, account reviews, control validation, vulnerability reviews, and continuous-monitoring activities are completed.
• Support RMF and ATO activities, including control evidence, Body of Evidence, POA&Ms, NIST SP 800-53, ICD 503, and applicable directives.
• Evaluate system and configuration changes for security impact and translate compliance requirements into technical work.
• Support isolated environments through secure scanning, logging, patching, hardening, and monitoring processes.
• Review security logs and events using Splunk or comparable SIEM technologies.
• Develop repeatable procedures and communicate risks, deficiencies, remediation status, and recommendations to leadership.
• Participate in technical exchanges, security reviews, engineering meetings, accreditation discussions, and team mentoring.

Requirements

To be successful in this role, you must meet the following qualifications:

• Bachelor's degree in Computer Science, Information Technology, or a related field with at least eight years of relevant experience. Additional relevant experience may be considered in lieu of a degree.
• Active TS/SCI with polygraph, or active TS/SCI with willingness to obtain and maintain a polygraph.
• Experience analyzing application performance and latency issues affected by front-end, middle-tier, and back-end security requirements.
• Experience with Windows Server 2016 or 2019, Active Directory, IIS, DNS, DHCP, Exchange, and DFS.
• Experience implementing security controls for file, email, directory, and other enterprise services across geographically dispersed sites.
• Experience assessing and hardening networks and systems using DISA STIGs.
• Experience with Splunk, McAfee HBSS, ACAS, or comparable enterprise security and malware-monitoring tools.
• Strong network and systems troubleshooting experience involving TCP/IP, internet security, and encryption of data at rest and in transit.
• Ability to produce clear technical documents, diagrams, procedures, schedules, and network topologies using Microsoft Office and Visio.
• Current DoD 8140 or 8570 IAT Level II certification and an appropriate Computing Environment certification.

Desired Skills

You will wow us even more if you have some of these skills:

• Experience managing or supervising technical professionals.
• Current CISSP or CASP+ certification.
• Experience supporting isolated or restricted environments.
• Experience leading vulnerability remediation and RMF or ATO activities for Intelligence Community systems.

Salary and Compensation

Salary is commensurate with education and years of experience. The anticipated salary range for this requisition is $110,000 - $225,000 annually. Additional factors considered in extending an offer include, but are not limited to, the responsibilities of the position, education, experience, knowledge, skills, abilities, security clearance, internal equity, applicable market data, contractual labor-category requirements, applicable bargaining agreements, and other applicable laws or requirements.

Who we are:

ABSC is a technology and services company that combines the agility of a small business with proven processes refined over more than two decades in business. We specialize in supporting public sector clients in the Intelligence, Defense, Health, and Safety areas. Our team stands ready to deliver the next generation of programs, personnel, and solutions to help advance our federal government customers’ driving innovation, agility, and security across all mission areas.

Some of our benefits include:

• Retirement Planning - 401k Fully Vested with Match
• Annual Health and Wellness Allowance - buy an Apple Watch, a treadmill, or hit the gym on us
• Career Development - Annual Funds to spend on Education and Training
• Volunteer Time Off - Annually, all employees can spend 8 hours directly supporting a charity of choice
• Charitable Match - ABSC matches an employee’s donation to a qualifying charity
• Referral Program - We pay for internal and external referrals!
• LOV Awards - Earn bonus awards throughout the year from our Living Our Values awards program

We are always looking to grow our team - if you know someone who is seeking a new career opportunity, please share this job opening with them. ABSC offers generous external referral bonuses. You don't need to be an employee to benefit from our Referral Program.

ABSC is a proud V3, Virginia Values Vets, member which recognizes our commitment to hiring Veterans. If you are a veteran, please be sure to include that in your application.

Equal Opportunity Employer, including veterans and individuals with disabilities.