Software Engineer/Modeling & Simulation

Description Leidos Defense is seeking a talented Software Engineer with a TS/SCI security clearance and the ability and experience to work multiple projects (primarily modeling & simulation efforts but also opportunities to work with hardware integration) within the Sensor Systems Analysis and Engineering Portfolio. You will join a diverse team of junior-to-senior software developers, engineers, and scientists to help create unique solutions for complex problems. Our team solves important problems that make a difference and support our customers in the current and future defense of our nation; primarily in the areas of modeling & simulation, sensor integration, testing, characterization, modeling, simulation, data analysis, and algorithm development for electro-optical infrared (EO/IR) systems. The ideal developer candidate will also demonstrate experience in and/or enthusiasm toward developing a broader technical capability to support overlapping engineering and scientific disciplines with a particular focus on writing software to solve problems. Candidate will be expected to support multiple tasks in parallel, productively contribute to a team environment, and communicate effectively to management, coworkers, and customers. Youu2019ll work within an established and very skilled team, alongside other contractors and our customers. Joining our team offers the opportunity to work with experts in their field and grow your career in an area that is appealing to you. You will quickly become an integral member of our team and be given the opportunity to take responsibility for challenging problems of your own. Because of this, we seek team members that are driven and engaged in their work while simultaneously demonstrating high character, given that you will often be working on sensitive and unique problems which require a high degree of trust from our customers. If this sounds like the kind of environment where you can thrive, keep reading Leidos Defense 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 worldu2019s toughest security challenges for customers with u201ccanu2019t failu201d missions. To explore and learn more, click here ( Are you ready to make an impact? Share your resume with us today u200bu200b Primary Responsibilities _u200b_ + u200bCandidate can expect to work closely with a team of engineers and scientists to write software (using primarily C++ and Python) to solve problems in a variety of disciplines to include EO/IR sensor systems, primarily for modeling & simulation purposes. + u200bBecause the candidate may fill various project needs, an interest in working multiple programs with intermediate ability in C++ and Python is expected along with strong object-oriented design skills, the ability to create design documentation, requirements specifications, and other technical documentation. + u200bCandidate is also expected to have the ability to work and to communicate effectively within a multidisciplinary team and have familiarity with software development for both Windows and Linux OS. _u200b_ u200bBasic Qualifications _u200b_ + u200bBacheloru2019s degree from an accredited university in software engineering, computer science, or an equivalent engineering; BS and 4 u2013 8 years of prior relevant experience or Masters with 2 u2013 6 years of prior relevant experience + u200bTS/SCI security clearance and the ability to maintain a DoW security clearance. + u200bExperience with C++/Python and experience using version control systems such as Git. + Strong object-oriented programming background + u200bCandidate must be a resident of the North Alabama area or willing to relocate to the Huntsville + Ability and willingness to work onsite in Huntsville Alabama u200b u200bPreferred Qualifications u200b + u200bIn addition to the qualifications listed above, the ideal candidate should be highly organized, demonstrating the ability to work independently at times due to a fast-paced and highly productive work environment. + Background with math/physics + TS/SCI clearance (with CI Polygraph) Preference may be given to candidates with one or more of the following: + Recent stellar academic performance + Familiarity or interest in EO/IR phenomenology + Experience with image processing + Experience with GPU programming and/or CUDA programming + Experience with developing AI/ML solutions + Experience with build systems such as CMake. _u200b_ If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo u2014 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 u2014 and moving faster than anyone else dares. Original Posting: March 17, 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 onlyand 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. About 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 $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit . 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 at . Securing Your Data Beware of fake employment opportunities using Leidosu2019 name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the automated system u2013 never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission (. Commitment to Non-Discrimination 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. REQNUMBER: R-00178604All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.

Created: 2026-03-19