Leidos is seeking a Software Engineer (C#) to work for the Security Enterprise Solutions (SES) business unit in Vista, CA. The SES business unit at Leidos designs and manufactures highly complex security equipment for use at border crossings, airports, seaports, and other transportation mechanisms. Our products include radiation detectors and spectrometers, X-ray and gamma ray scanners for cars, trucks and trains, and CT explosives detection equipment for airline passenger baggage. The ultimate goal for this position will be to update existing design as well as introduce new products to our already extensive line of security detection products. The products being developed through this effort are truly novel, and will make travel and trade safer, healthier, and more efficient on a global level. We are seeking candidates local to Vista CA that have the ability to work a hybrid schedule (3 days remote, 2 days onsite). As part of a cross-functional team, the Software Engineer (C#) will develop and maintain cargo inspection detection systems for the Ports and Borders group at Leidos. This role requires strong technical skills, a commitment to continuous learning, and the ability to contribute to innovative solutions.