<?xml version="1.0" encoding="UTF-8"?>
<source>
  <jobs>
    <job>
      <externalid>50036edd-8a0</externalid>
      <title>Modeling and Simulation Software Engineer</title>
      <description><![CDATA[<p>Leidos is seeking a Modeling and Simulation Software Engineer to join their team in Beavercreek, Ohio. The successful candidate will use strong technical capabilities and communication skills to collaborate with technical teams of engineers and scientists to integrate an infrared threat simulation into a multispectral few-on-few engagement simulation environment.</p>
<p><strong>Primary Responsibilities:</strong></p>
<ul>
<li>Perform tasks related to the integration of an infrared threat simulation into a multispectral few-on-few, C++ based simulation environment</li>
<li>Work with a team of engineers and collaborate on team tasking</li>
<li>Collaborate with teams of government and contractor personnel</li>
<li>Participate in the design and implementation of tools that support the wider multispectral simulation</li>
<li>Test and evaluate implementations, provide feedback to developmental team and team partners</li>
<li>Develop, code and test software and prepare documentation requested by the government customer</li>
</ul>
<p><strong>Basic Qualifications:</strong></p>
<ul>
<li>Bachelor’s degree in CS, CE, EE or a related field with 2+ years of applicable experience or an MS degree in CS, CE, EE, or a related field</li>
<li>Experience with C++, Linux</li>
<li>Experience with modeling and simulation (M&amp;S) techniques</li>
<li>Excellent English-language written and verbal communication. Strong emphasis on writing ability</li>
<li>Great people skills and the desire to work with technical teams of engineers and scientists</li>
<li>Ability to work independently and under deadlines in a mixed government-contractor environment</li>
<li>To be considered, must have a current and active Secret security clearance</li>
</ul>
<p><strong>Preferred Qualifications:</strong></p>
<ul>
<li>Experience working with modeling and simulation, Python, GPU compute, HPC resources, EO/IR sensor phenomenology, infrared threat systems</li>
<li>Previous experience with department of defense software applications</li>
</ul>
<p>The pay range for this position is $69,550.00 - $125,725.00.</p>
<p style="margin-top:24px;font-size:13px;color:#666;">XML job scraping automation by <a href="https://yubhub.co">YubHub</a></p>]]></description>
      <jobtype>full-time</jobtype>
      <experiencelevel>mid</experiencelevel>
      <workarrangement>onsite</workarrangement>
      <salaryrange>$69,550.00 - $125,725.00</salaryrange>
      <skills>C++, Linux, modeling and simulation, English-language written and verbal communication, Python, GPU compute, HPC resources, EO/IR sensor phenomenology, infrared threat systems, department of defense software applications</skills>
      <category>Engineering</category>
      <industry>Technology</industry>
      <employername>Leidos</employername>
      <employerlogo>https://logos.yubhub.co/leidos.com.png</employerlogo>
      <employerdescription>Leidos is a company that provides services and solutions in various fields including technology, engineering, and analysis.</employerdescription>
      <employerwebsite>https://leidos.com</employerwebsite>
      <compensationcurrency>USD</compensationcurrency>
      <compensationmin>69550</compensationmin>
      <compensationmax>125725</compensationmax>
      <compensationinterval>yearly</compensationinterval>
      <applyto>https://yubhub.co/jobs/job_50036edd-8a0/</applyto>
      <location>Beavercreek, OH</location>
      <city>Beavercreek</city>
      <state>OH</state>
      <postalcode></postalcode>
      <country>US</country>
      <postedate>2026-10-25</postedate>
    </job>
    <job>
      <externalid>04a6f4b1-248</externalid>
      <title>Modeling and Simulation Lead Software Engineer</title>
      <description><![CDATA[<p>Leidos is seeking a Lead Modeling and Simulation Software Engineer with an active Secret clearance to work in our Beavercreek, Ohio office.</p>
<p>The successful candidate will use strong technical capabilities and communication skills to collaborate with technical teams of engineers and scientists to integrate an infrared threat simulation into a multispectral few-on-few engagement simulation environment.</p>
<p><strong>Primary Responsibilities:</strong></p>
<ul>
<li>Perform tasks related to the integration of an infrared threat simulation into a multispectral few-on-few, C++ based simulation environment</li>
<li>Lead a team of engineers and manage team tasking</li>
<li>Collaborate with teams of government and contractor personnel</li>
<li>Participate in the design and implementation of tools that support the wider multispectral simulation</li>
<li>Test and evaluate implementations, provide feedback to developmental team and team partners</li>
<li>Prepare documentation requested by the government customer</li>
</ul>
<p><strong>Basic Qualifications:</strong></p>
<ul>
<li>Bachelor’s degree in CS, CE, EE or a related field with 5+ years of applicable experience or an MS degree in CS, CE, EE, or a related field</li>
<li>Experience with C++, Linux</li>
<li>Experience with modeling and simulation (M&amp;S) techniques</li>
<li>Excellent English-language written and verbal communication. Strong emphasis on writing ability</li>
<li>Great people skills and the desire to work with technical teams of engineers and scientists</li>
<li>Ability to work independently and under deadlines in a mixed government-contractor environment</li>
<li>To be considered, must have a current and active Secret security clearance</li>
</ul>
<p><strong>Preferred Qualifications:</strong></p>
<ul>
<li>Experience working with modeling and simulation, Python, GPU compute, HPC resources, EO/IR sensor phenomenology, infrared threat systems</li>
<li>Previous team lead experience</li>
<li>Previous experience with department of defense software applications</li>
</ul>
<p>The pay range for this position is $87,100.00 - $157,450.00.</p>
<p style="margin-top:24px;font-size:13px;color:#666;">XML job scraping automation by <a href="https://yubhub.co">YubHub</a></p>]]></description>
      <jobtype>full-time</jobtype>
      <experiencelevel>senior</experiencelevel>
      <workarrangement></workarrangement>
      <salaryrange>$87,100.00 - $157,450.00</salaryrange>
      <skills>C++, Linux, modeling and simulation, English-language written and verbal communication, Python, GPU compute, HPC resources, EO/IR sensor phenomenology, infrared threat systems</skills>
      <category>Engineering</category>
      <industry>Technology</industry>
      <employername>Leidos</employername>
      <employerlogo>https://logos.yubhub.co/leidos.com.png</employerlogo>
      <employerdescription>Leidos is a technology, engineering, and science company that provides services and solutions to various industries.</employerdescription>
      <employerwebsite>https://leidos.com</employerwebsite>
      <compensationcurrency>USD</compensationcurrency>
      <compensationmin>87100</compensationmin>
      <compensationmax>157450</compensationmax>
      <compensationinterval>yearly</compensationinterval>
      <applyto>https://yubhub.co/jobs/job_04a6f4b1-248/</applyto>
      <location>Beavercreek, OH</location>
      <city>Beavercreek</city>
      <state>OH</state>
      <postalcode></postalcode>
      <country>US</country>
      <postedate>2026-10-25</postedate>
    </job>
    <job>
      <externalid>c2a40d54-06c</externalid>
      <title>Linux and Windows Systems Administrator</title>
      <description><![CDATA[<p>Leidos Corporate Information Security Office (CISO), reporting through the Digital sector, is seeking a Linux and Windows System Administrator to support and maintain complex classified environments.</p>
<p>The selected candidate will be responsible for administering, securing, troubleshooting, and maintaining Windows and Linux systems across physical and virtual infrastructures.</p>
<p>This role supports mission-critical operations by ensuring system availability, compliance with security requirements, and reliable day-to-day operations within a secure enterprise environment.</p>
<p><strong>Location:</strong> All work will be performed onsite in our Beavercreek, OH office.</p>
<p><strong>Clearance:</strong> You must currently carry an active DoD Secret clearance to qualify for consideration.</p>
<p><strong>Primary Responsibilities</strong></p>
<ul>
<li>Administer and maintain Windows Workstations, Windows Server, and Linux systems (RHEL, Rocky Linux, Ubuntu) across physical, virtual, and air-gapped environments.</li>
<li>Perform Tier 2 incident resolution, troubleshoot technical issues, conduct root-cause analysis, and collaborate with engineering, cybersecurity, and stakeholders to resolve complex problems.</li>
<li>Execute system patching, vulnerability remediation, configuration management, and compliance activities.</li>
<li>Implement and maintain monitoring, logging, backup and recovery solutions, and operational documentation/runbooks.</li>
<li>Support account and access administration in accordance with least-privilege principles and organisational security policies.</li>
<li>Automate repetitive administrative tasks using PowerShell, Bash, Ansible, or similar automation tools.</li>
<li>Deploy and maintain operating system images using PXE/network boot, Kickstart, disk imaging, answer files, and automated installation methods.</li>
<li>Perform system hardening and security compliance using DISA STIGs, SCAP, and NIST 800-53 security controls.</li>
<li>Administer and troubleshoot Active Directory, DNS, DHCP, file servers, virtualisation platforms, and Layer 2 network switching, including VLAN configuration, TCP/IP connectivity, and switch port administration in an air-gapped environment.</li>
<li>Support dual-boot bare-metal systems and virtualised environments.</li>
<li>Participate in after-hours support and on-call rotations as required.</li>
<li>Research, analyse, and resolve Windows, Linux, and networking issues to maintain system availability, reliability, and performance.</li>
</ul>
<p><strong>Basic Qualifications</strong></p>
<ul>
<li>Current Active DoD Secret security clearance.</li>
<li>Current CompTIA Security+ certification.</li>
<li>Bachelor&#39;s degree in a technical field with 4-8 years of relevant experience. Additional years of relevant experience may be considered in lieu of a degree.</li>
<li>Experience administering Windows Server and Linux systems in secure or air-gapped environments.</li>
<li>Experience implementing DISA STIGs, SCAP, NIST 800-53 security controls, and system hardening practices.</li>
<li>Experience administering:</li>
<li>Active Directory</li>
<li>DNS</li>
<li>DHCP</li>
<li>File Servers</li>
<li>Experience building, integrating, maintaining, troubleshooting, and remediating Windows and Linux systems.</li>
<li>Experience deploying operating systems using PXE, Kickstart, ISO/disk imaging, and automated installation methods.</li>
<li>Experience configuring and troubleshooting Layer 2 switching, VLANs, TCP/IP, and network connectivity.</li>
<li>Experience managing Windows and Linux updates, patching, and vulnerability remediation.</li>
<li>Ability to develop automation scripts using PowerShell and Bash.</li>
<li>Familiarity with Linux software repository management.</li>
<li>Ability to work independently and collaboratively with minimal supervision.</li>
<li>Strong analytical, communication, and problem-solving skills.</li>
</ul>
<p><strong>Preferred Qualifications</strong></p>
<ul>
<li>Red Hat Certified System Administrator (RHCSA) certification.</li>
<li>Experience administering VMware, Hyper-V, or other virtualised environments.</li>
<li>Experience with automation and configuration management tools, including Ansible.</li>
<li>Experience supporting secure or classified DoD environments.</li>
<li>Knowledge of backup, recovery, logging, and monitoring solutions.</li>
<li>Experience performing DISA STIG remediation, SCAP compliance validation, and vulnerability scanning using Tenable Nessus.</li>
</ul>
<p><strong>Pay Range:</strong> $87,100.00 - $157,450.00</p>
<p style="margin-top:24px;font-size:13px;color:#666;">XML job scraping automation by <a href="https://yubhub.co">YubHub</a></p>]]></description>
      <jobtype>full-time</jobtype>
      <experiencelevel>senior</experiencelevel>
      <workarrangement>onsite</workarrangement>
      <salaryrange>$87,100.00 - $157,450.00</salaryrange>
      <skills>Linux system administration, Windows Server administration, CompTIA Security+, DoD Secret clearance, PowerShell scripting, Bash scripting, Ansible, DISA STIGs, SCAP, NIST 800-53, Active Directory administration, DNS administration, DHCP administration, File Server administration, Layer 2 network switching, VLAN configuration, TCP/IP connectivity, Red Hat Certified System Administrator (RHCSA), VMware administration, Hyper-V administration, Automation and configuration management tools, Tenable Nessus</skills>
      <category>IT</category>
      <industry>Technology</industry>
      <employername>Leidos</employername>
      <employerlogo>https://logos.yubhub.co/leidos.com.png</employerlogo>
      <employerdescription>Leidos is a Fortune 500 company that provides services and solutions in cybersecurity, data analytics, and IT.</employerdescription>
      <employerwebsite>https://leidos.com</employerwebsite>
      <compensationcurrency>USD</compensationcurrency>
      <compensationmin>87100</compensationmin>
      <compensationmax>157450</compensationmax>
      <compensationinterval>yearly</compensationinterval>
      <applyto>https://yubhub.co/jobs/job_c2a40d54-06c/</applyto>
      <location>Beavercreek, OH</location>
      <city>Beavercreek</city>
      <state>OH</state>
      <postalcode></postalcode>
      <country>US</country>
      <postedate>2026-10-24</postedate>
    </job>
  </jobs>
</source>