Software Engineer

Leidos Defense is seeking a Senior Software Engineer to join our team in our San Diego facility, supporting the U.S. Navys AN/SQQ-89(V) Anti-Submarine Warfare (ASW) systems. Our program helps modernize Navy ships by replacing outdated sonar systems with updated AN/SQQ-89(V)15 systems, supporting the installation, logistics, quality checks, and training needed to prepare ship personnel to operate the new systems. In this role, you will focus on modernizing the AN/SQQ-89(V) ASW Training System by transitioning Tactical Insertion (TI) hardware-based solutions to a scalable, virtualized Linux training platform. Youll work with Red Hat Enterprise Linux (RHEL), KVM, Open vSwitch, Python, Ansible, and hardware passthrough technologies to support complex Navy training and simulation environments. What You'll Do Design, deploy, and maintain virtualized environments supporting AN/SQQ-89(V)15 training capabilities. Migrate software and services from Tactical Insertion hardware platforms to virtualized environments using KVM, libvirt, virsh, and VirtIO. Build and maintain RHEL 7/8 system images, templates, and repositories. Develop automated deployment and configuration solutions using Ansible. Create Python utilities and scripts for system administration, testing, monitoring, and data management. Configure and maintain Open vSwitch environments supporting multiple networks and high-throughput virtual machine communications. Integrate physical and virtual networking within tactical training environments. Troubleshoot complex virtualization, Linux, networking, storage, hardware, and application integration issues. Support performance tuning and optimization of virtualized systems, networking, storage, and compute resources. Support software integration, system verification, validation, and acceptance testing. Collaborate with software developers, systems engineers, cybersecurity personnel, and training system stakeholders. Support cybersecurity compliance activities, including STIG implementation, vulnerability remediation, and RMF activities. Develop and maintain architecture diagrams, deployment guides, standard operating procedures, and automation documentation. Support modernization efforts focused on improving the portability, scalability, and maintainability of training environments. What We're Looking For Bachelor's degree with 48 years of relevant experience, or a Master's degree with 26 years of relevant experience. Experience with Linux systems engineering, virtualization, software development, or platform engineering. Experience administering Red Hat Enterprise Linux (RHEL) environments. Strong experience with KVM, libvirt, and virsh. Experience implementing and troubleshooting Open vSwitch (OVS). Experience with hardware passthrough technologies, including PCIe passthrough, VFIO, SR-IOV, and IOMMU configuration. Experience developing infrastructure automation using Ansible. Experience developing software and automation tools using Python. Strong understanding of Linux networking concepts, including VLANs, bridges, routing, bonding, and virtual switching. Experience troubleshooting integration issues across hardware, operating systems, networking, and applications. Ability to obtain and maintain a DoD security clearance. Preferred Qualifications Experience supporting AN/SQQ-89(V)15 or AEGIS combat systems. Red Hat Certified Engineer (RHCE). Experience with high-performance networking and low-latency virtualized environments. Experience supporting GPU, FPGA, capture card, or other specialized hardware passthrough to virtual machines. Familiarity with distributed storage, NFS, iSCSI, and SAN technologies. Experience with FreeIPA, LDAP, Kerberos, and enterprise Linux identity management. Experience supporting RMF, STIG implementation, ACAS, and cybersecurity compliance initiatives. Active Secret or Top Secret clearance. If you have a strong Linux and virtualization background and are interested in applying those skills to modernize U.S. Navy training systems, we encourage you to apply. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 and moving faster than anyone else dares. Original Posting: August 24, 2026 For U.S. Positions: 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. Pay Range: Pay Range $87,100.00 - $157,450.00 The Leidos pay range for this job level is a general guideline only and 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. Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com. Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here. Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to spam.leidos@leidos.com. Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.