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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Principal Software Engineer - DevOps / Infrastructure (Onsite) - **Company:** RTX - **Location:** Davis, VA, United States - **Experience:** Expert - **Salary:** $145,600.0 - $276,800.0 - **Contract:** Permanent contract - **Skills:** Proxmox, XML Schema, LTE (Telecommunication), Agile Methodology, Amazon Web Services, Application Integration Architecture, Confluence, JIRA, Automation of Tests, Microsoft Azure, Bash Shell, Cloud Computing, Cloud Engineering, Continuous Integration, Data Systems, Linux, DevOps, Infrastructure as a Service (IaaS), JSON, Python (Programming Language), PostgreSQL, Microsoft Visual Studio, MongoDB, Network Virtualization, Cisco Nexus Switches, NoSQL, OpenShift, OpenStack, Platform as a Service (PAAS), Windows PowerShell, Scrum Methodology, Ansible, Software Engineering, SQL Databases, TCP/IP, Toolchain, Virtual Local Area Networks, Virtualization Technology, Extensible Markup Language (XML), YAML, Google Cloud, Computer Network Technologies, Server Side Scripting, Virtual Environment, Gitlab, Containerization, Kubernetes, Infrastructure Automation Frameworks, Puppet, Restful APIs, Terraform, Splunk, Docker, Legacy Systems, Artifactory, Vmware, Microservices - **Published:** October 27, 2026 - **Apply:** https://www.careerbuilder.com/job-details/senior-principal-software-engineer-devops-infrastructure-onsite-davis-ca--2932985f-e715-499d-a4c7-8e875700b263 ## About the Role Software Engineering, DevOps, United States Citizen, Security Clearance, RTX, Aerospace and Defense, Software Engineering, Simulation, Willing to Travel, Infrastructure Software, * Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience or an Advanced Degree in a related field and minimum 7 years of experience * Active and transferable U.S. government issued secret security clearance is required prior to start date * U.S. citizenship only (dual citizenship not permitted) is required, as access to information under this program/contract is restricted to individuals with sole U.S. citizenship. Qualifications We Prefer: * Experience architecting and providing technical guidance for CI/CD pipelines across multi-team or multi-environment programs. * Experience diagnosing complex system issues and proposing effective solutions. * Experience communicating technical concepts clearly and influencing technical direction across stakeholders. * Experience building strong working relationships with engineering and program leadership. * Experience with software development and management tools such as GitLab, Jira, Confluence, Coverity, Nexus or Artifactory, and Splunk. * Experience with infrastructure automation frameworks (e.g. Ansible, Terraform, Puppet). * Experience with server-side scripting languages such as Python, Bash, or PowerShell. * Experience managing and troubleshooting virtualized environments (e.g. VMware, Proxmox). * Experience implementing continuous integration workflows for real-time testing and diagnostics within virtualized environments. * Experience applying core networking concepts (TCP/IP, VLANs) within complex virtual environments. * Experience designing and integrating applications across modern IaaS/PaaS and cloud platforms (OpenShift, VMware, OpenStack, AWS, Azure, GCP), with knowledge of cloud-native architecture patterns. * Strong understanding of cloud and virtual networking architectures (L2/L3, spine-leaf). * Background in Agile development methodologies (e.g. Scrum, SAFe). * Experience with cloud-native engineering, including containerization (Docker or Podman), Kubernetes orchestration, microservices design, and RESTful API integration. * Experience working with modern data systems, including SQL/NoSQL databases (MongoDB, PostgreSQL, MonetDB) and structured data formats (JSON, XML, YAML, XSD). * Proficiency in both Linux and Windows environments. * Experience evaluating and modernizing legacy systems for cloud or virtualized environments. * Proficiency with modern development toolchains and IDEs (e.g. Visual Studio, VS Code). * Relevant security (Security+, CISSP) or networking (CCNA or equivalent) certifications. ## Description Collins Aerospace, an RTX company, is a global leader providing technologically advanced and intelligent solutions across the aerospace and defense industry. We leverage our extensive capabilities, comprehensive portfolio, and deep expertise needed to tackle our customers' most complex challenges and navigate the demands of a fast-paced global market. The Strategic Defense Solutions (SDS) portfolio is seeking a highly motivated and skilled Software Engineering professional to join our team in Sterling, VA. In this critical role, you will be part of an innovative team focused on designing and developing holistic, integrated simulation and training solutions, directly ensuring our customers are prepared for the most vital missions. The role is based on-site in Sterling, VA, with occasional travel required. The ability to obtain and maintain a U.S. security clearance is mandatory, as much of the work is performed within a classified lab environment requiring daily onsite presence. What You Will Do: * Provide technical leadership and overall architectural direction for infrastructure software systems, guiding their design, implementation, and long-term evolution. * Lead and develop automation capabilities that improve reliability, repeatability, and velocity across teams' workflows. * Own reliability and performance of the CI/CD pipeline for the mission simulation environment by diagnosing systemic issues across the build chain and implementing durable improvements. * Drive the strategy for automating manual processes, including defining automation priorities, establishing test-automation approaches, and ensuring integration into the CI/CD pipeline. * Evaluate CI/CD systems holistically, ensuring changes support team workflows, scalability, and long-term architectural goals. * Mentor and influence engineers across teams, shaping engineering practices, resolving complex technical challenges, and promoting modern infrastructure approaches.