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ACAS Engineer
ACAS Engineer-August 2024
Mafb Gun Annx
Aug 3, 2025
ABOUT LEIDOS
Leidos is a Fortune 500® information technology, engineering, and science solutions and services leader working to solve the world’s toughest challenges in the defense, intelligence, homeland security
501 - 1,000 employees
Consulting
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About ACAS Engineer

  Description

  Leidos is currently seeking an ACAS Engineer in support of the AFINC II contract for the highly visible 26th Network Operations Squadron (26 NOS) at Montgomery, Alabama, which provides a world-wide support mission. The 26 NOS is responsible for the intranet support of the entire Air Force network. The mission of the 26 NOS is to operate and defend the Air Force (AF) Enterprise computer network consisting of the AF Wide Area Network (WAN) routers, AF Network Increment 1 (AFNET Inc 1) Gateways, and the 26 NOS Local Area Network (LAN) assets.

  The ACAS Engineer selected for this position works on a team that manages all the Air Force network boundary AFINC systems for the program to include updates, life cycle management, IAVMs, software patches, etc. We are looking for Windows, UNIX/Red Hat, NetApp, and Splunk System Administrators.

  Primary Responsibilities

  Operates the security and compliance baseline configuration, inventory, and best practices for the vulnerability management solution (VMS) deployed across multiple unclassified and classified network locations supporting the implementation for Tenable products within Assured Compliance Assessment Solution (ACAS) including .SC (SecurityCenter™) and Nessus® scanners; Also 2.0 Architecture Components: Nessus Networking Monitor (NNM), Nessus Manager and Nessus Agents use cases

  Conducts assessments of threats and vulnerabilities; determines deviations from acceptable configurations, enterprise or local policy

  Ability to assess the level of risk, develop or recommend meaningful insights about the context of an organization threat environment to improve its risk management posture; measure effectiveness of systems/networks/endpoints that deviate from acceptable configurations, enclave or local policy

  Work in concert with other Tenable operators, integrator and IA personnel responsible for operating and maintaining the ACAS program in multiple enclaves

  Candidate will coordinate system activities such as deploying, configuring, monitoring, tuning, upgrading, and troubleshooting Tenable components spanning local, remote and complex environments

  Record configurations, conduct assessments and submit suggestions to scan schedule(s), scanners scan zones, repository management, chart Credentials >Assets >Scans >Reports >Dashboards

  Ability to analyze and document Department Information Systems Agency (DISA) Security Technical Implementation Guidelines (STIGs) applicable to each Non-classified or Secret Internet Protocol (IP) Router Network (NIPRNet, SIPRNet) environment for all ACAS implementations

  Responsible for acquiring, configuring and ensuring external deliverables: DISA/Continuous Monitoring and Risk Scoring (CMRS), importing vulnerability and security audit plug-ins, DoD Patch Repository Defense Asset Distribution System (DADS), build/maintain vulnerability and audit repositories

  Assist mapping scan zones, scanners, subnets to include leveraging enterprise network application tools such as Forescout, SolarWinds Orion, McAfee Endpoint Security Solutions (ESS) and/or Microsoft Endpoint Configuration Manager (MECM)

  Continuously assesses current ACAS implementations for scans, assets, analysis and permissions

  Assist with validation and sustainment of documentation such as System Security Plans, Network Address Declaration (NAD), security groups/roles/permissions and/or zones/credentials/scans

  Create network diagrams of the designs with Microsoft Visio (include specialty requirements)

  Implement/create report dashboard designs, automated custom email report notifications, report repositories for each environment that are specific to the following audiences: Leadership & Executives; Cybersecurity Staff; System Administrators; Application Maintainers

  Ensures networks receive periodic updates from AFCYBER-released software patches, updates, and upgrades via Time Compliance Technical Orders (TCTO), Time Compliance Network Orders (TCNO), Maintenance Tasking Order (MTO) and Notices to Airman (NOTAMs)

  Responsible to assist/troubleshoot schedule scans are covering 100% of intended targets ensuring timely and accurate scanning and reporting per PMO, IA and DoD policies and orders.

  Maintain effective communications with other external and internal teams essential to ACAS operations

  Create/maintain/implement custom security policies in line with DISA ACAS best practice guidance

  Assist AF Cyber personnel with the DISA Information Assurance Vulnerability Management (IAVM) programs, cybersecurity toolsets, and Operation Order (OPORD)/Fragmentary Order (FRAGO) support

  Perform systems analysis, design review, integration of complex system applications

  Ensures external networks receive cybersecurity inventory reporting for compliance data via ACAS to DISA CMRS and DoD Enterprise Logging Ingest and Cyber Situational Awareness Refinery (ELICSAR) Big Data Platform (BDP) and update Plan of Actions, Milestones (POAMs) documentation

  Participate in all phases of the Vulnerability Management (VM) life cycle with emphasis on the scan, patch, rescan, mitigation factors and reporting phases

  Assist in the installation/maintenance of configuration files, custom security policies, plug-ins, signatures, certificates, DISA STIGs and checklist configuration audits and other such files necessary to add vulnerability discovery capabilities into the ACAS system

  Basic Qualifications

  Candidate should have 1 to 3 years of years of hands-on experience in:

  ACAS and/or Tenable.sc (SecurityCenter) or Tenable Nessus products

  Familiarity using ACAS or Tenable .SC/Nessus best practices

  Linux-based (RHEL) or Windows operating systems support with experience in mid-to-large enterprise data center environment; familiarity with network patch/update management

  Experience with virtualized environments (VMware vSphere, ESXi)

  Any scripting experience: Bash, Perl, PowerShell, Python, Nessus Attack Scripting Language (NASL)

  Knowledge of data communications, local-area networking (LAN), wide-area networking (WAN), VoIP, routers, switches, and firewalls

  Advanced networking concepts, VLAN, trunking and port channel

  Thorough understanding of Internet Protocol (IP) routing, switching, and OSI model

  Technical degree, Associates or, Bachelor’s degree in Computer Science/Information Systems, Science/Engineering/Math or 2-4 years’ relevant experience in Information Technology preferably within system or application administration is acceptable

  Active Secret government security clearance required

  Requires a DoD 8570.01-M Information Assurance Technical (IAT) Level II certification:

  CompTIA Security+ CE (Continuing Education)

  CompTIA Cybersecurity Analyst (CySA+) CE (Continuing Education)

  (ISC)² Systems Security Certified Practitioner (SSCP)

  GIAC Global Industrial Cyber Security Professional (GICSP)

  GIAC Security Essentials Certification (GSEC)

  (ISC)² Systems Security Certified Practitioner (SSCP)

  Requires at least one or more DoDM 8140.03 Computing Environment/Operating System (CE/OS) Defense Cyberspace Workforce Certification (DCWF) requirement(s) ( or acquire within 120 days ):

  DISA ACAS Operator and Supervisor Course (current; expires every 3 years )

  Preferred: sc Specialist Certification; Tenable.sc Expert Certification

  Recommended: Tenable.sc Introduction and/or Tenable Nessus Fundamentals

  Prefer one or more of the following CE/OS based technical certifications:

  CompTIA Linux+ CE or Red Hat Certified System Administrator (RHCSA) or Linux Foundation Certified System Administrator (LFCS)

  Microsoft based certification ( current ):

  Microsoft Certified: Security, Compliance, and Identity Fundamentals

  Microsoft Certified:Security Operations AnalystAssociate

  Microsoft Certified:Identity and Access AdministratorAssociate

  Preferred Qualifications

  Possess refined critical thinking skills, should be a motivated self-starter, and multi-task capable

  Good communication and interpersonal skills; Ability to follow policies and procedures

  Ability to communicate in a clear speaking voice as well as the ability to respond clearly to questions

  Aptitude to address negative situations and resolve them in a positive manner

  Approach work tasks as diplomatic, adaptive to a dynamic environment, dependable and reliable

  ITIL certification a plus

  Splunk Core Certified User or Splunk Core Certified Power User

  Pay Range:

  Pay Range $65,000.00 - $117,500.00

  The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

  Original Posting Date:

  01/11/2024

  While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

  REQNUMBER: R-00126417

  All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.

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