System Integration Engineer

Looking for an opportunity to make an impact?Leidos is dedicated to making the world a safer place. This starts with helping our customers in the Defense Industry achieve their critical missions. Our dedicated Defense Group employees are solving critical challenges across the globe. At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. Are you ready for your next career challenge?The Non-Kinetic Effects Business Area, part of the Defense Sector at Leidos, currently has an opening for a cleared System Integration Engineer to work in our Arlington VA office. This is an exciting opportunity to use your experience helping multiple DoD customers develop “bleeding edge” technology protecting our warfighters in the field. Your role will directly support our diverse portfolio of programs through a combination of Network Infrastructure Design & Deployment; Automation & Scripting and Troubleshooting & Analysis. You may be requested to provide software support to help with integration of the new technologies into existing networked systems. **Note: The classified nature of this work requires this position to be onsite in our Arlington Office.Primary Responsibilities:You will design, build, and automate large-scale data networks, focusing on scalability, reliability, and performance. You will be asked to design & automate IT & networks, integrate infrastructure equipment for deployments, manage configurations, and perform deep troubleshooting, often bridging network operations with software development teams. Key responsibilities include ensuring that disparate hardware, software, and networking components function cohesively as a unified, efficient system.Day-to-day life will involve: Architecture & Design: Planning and mapping out how different software systems, APIs, and hardware devices will communicate with one another.Testing & Validation: Writing test scripts, running diagnostics, and ensuring systems are secure, compliant, and scalable.Automation & Scripting: Develop tools, scripts, and reusable libraries to handle repetitive manual tasks.Troubleshooting & Analysis: Debug and solve complex network issues, performing deep dives into hardware and protocols.Documentation & Collaboration: Partner with system designers and developers to create engineering design documents, policies, and best practices.CI/CD Pipelines: Integrate network changes into GitHub Actions or GitLab for pre-deployment testing, rollback capabilities, and strict version control.Basic Qualifications:Bachelor’s degree in engineering or related field with 4+ years of prior relevant experience or a master’s degree with at least a year experience in one of these areas: computer engineering, software engineering, test engineering or related field.Must be a US Citizen. Must have an active Secret clearance with the ability to obtain TS.Experience working in a Systems Integration Lab (SIL) environment. Strong desire to grow and learn new technologies. Ability to work within a dynamic work environment, ability to handle multiple tasks at once (multi-task).Networking Knowledge: Familiar with IP networking fundamentals, including TCP/IP, BGP, OSPF, and MPLS.Programming/Scripting: Experience with Python or Bash.Experience: 2+ years of experience in network engineering, deployments, or architecture.Environment: Experience with Linux systems.Preferred QualificationsActive TS clearance. Familiar with Agile Methodologies, preferably SCRUM or Kanban. Experience with Atlassian tools such as JIRA, Confluence, Bitbucket.Experience with Network Operating Systems like Junos or Cisco IOS.Knowledge of network security architecture (firewalls, ACLs).Experience with network containers in support of CI/CD pipelines.NKEElectronicWarfareIf 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:June 8, 2026For 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 - $157,450.00The 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.SummaryLocation: Arlington, VAType: Full time