Senior Systems Engineer

Looking for an opportunity to make an impact? 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 sustainable. 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. Your greatest work is ahead! Leidos’ Defense Sesors is seeking a Senior Systems Engineer to join our team in Lawton Oklahoma and Huntsville Alabama developing state of the art Counter Unmanned Aircraft Systems (C-UAS) and Mobile Short-Range Air Defense (M-SHORAD) aligned solutions.

This role will report to the Program Manager responsible for full kill chain C-UAS sensing, decision aids, and effectors. As a Senior Systems Engineer you will develop and drive requirements for radar, command and control, effector, and cyber products. This role will lead a diverse team of engineering leaders & professionals and requires deep product development and leadership knowledge across multiple business areas.

Occasional travel to customer sites worldwide or to engage directly with our team in Lawton Oklahoma or Huntsville Alabama is required (10% or quarterly). If this sounds like the kind of environment where you can thrive, keep reading! Leidos Defense Sensor provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide.

Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world’s toughest security challenges for customers with “can’t fail” missions. To explore and learn more, click here ! Are you ready to make an impact?

Share your resume with us today! Primary Responsibilities Lead systems engineering activities across the full Counter-Unmanned Aircraft Systems lifecycle, including requirements analysis, architecture development, design integration, verification, validation, and transition to fielding.

Apply Model-Based Systems Engineering (MBSE) methods to define, analyze, and manage system requirements, behaviors, interfaces, and architectural relationships for CUAS solutions using digital engineering best practices. Develop, maintain, and refine system models in Cameo Systems Modeler to support requirements decomposition, traceability, interface definition, architecture development, and verification planning.

Analyze, define, and manage operational, functional, interface, and performance requirements for CUAS command and control systems, integrated sensors, effectors, and communications architectures. Maintain end-to-end requirements traceability from mission needs through design, integration, and test, including verification mapping and technical baseline control in model-based and document-based artifacts.

Support integration of sensors, effectors, communications, networking, and C2 software into cohesive CUAS solutions that meet mission objectives and interoperability requirements. Plan, coordinate, and execute systems integration and test activities at the subsystem, system, and system-of-systems levels.

Perform C2 software testing, including functional, interface, regression, performance, and operational testing in laboratory, integration, and field environments. Troubleshoot hardware, software, network, and interface issues identified during integration and test and support timely resolution of discrepancies and defects.

Support test planning, procedure development, execution, data analysis, and reporting for developmental and operational test events. Conduct technical reviews, trade studies, engineering analyses, and risk assessments to support design decisions, capability maturation, and program milestones.

Ensure compliance with applicable program, quality, safety, cybersecurity, and Department of Defense engineering and test standards. Provide technical leadership across cross-functional engineering, integration, and test teams and mentor junior engineers as needed. Support configuration management, software release management, and documentation of integrated CUAS system baselines.

Participate in customer and stakeholder meetings, providing technical briefings, engineering recommendations, and status on system performance and test progress. Contribute to transition-to-production and transition-to-fielding activities, including readiness assessments and support to operational users.

Leverage INCOSE systems engineering principles and practices in execution of requirements management, architecture development, integration, and verification activities; INCOSE CSEP certification is desired or preferred for candidates in this role.

Leidos resources identify CSEP as the certification level recognizing systems engineering practitioners with demonstrated knowledge and experience, and note that it requires 5 years of systems engineering experience.

Basic Qualifications Bachelor’s degree in Systems Engineering, Software Engineering, Computer Science, Computer Engineering, Electrical Engineering, Mechanical Engineering, Aerospace Engineering, or equivalent degree from an ABET-accredited university with 12+ years of experience or an MS with 10+ years. Experience in deriving requirements for complex electrical, electro-mechanical, mechanical, and software systems.

Position requires candidates to be capable of performing in a collaborative engineering environment working closely with multi-disciplinary teams. Demonstrated experience effectively communicating within a team environment. Resident of the North Alabama area or willing to relocate to the Huntsville - North Alabama, AL area.

Must be a US citizen, possess a secret clearance, or have the ability to obtain a secret clearance. Preferred Qualifications Cameo and/or other Model Based System Engineering (MBSE) modeling tools Demonstrated experience effectively leading a team of engineers. Demonstrated cross-discipline collaboration. Demonstrated experience accurately estimating the engineering effort (i.e.

hours) associated with Systems Engineering tasks. DOORS and/or other requirements database tools Understanding of the DoD acquisition processes and methods Experience supporting one or more DoD programs Object Management Group (OMG) Certified System Modeler Professional (OCSMP) certification INCOSE Systems Engineering Professional (SEP) certification (ASEP or CSEP) 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: November 12, 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 $131,300.00 - $237,350.00 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.