Mission Software Engineer

Salary: $122000 - 209000 per year Requirements: We require a bachelors degree or equivalent. We require an active U.S. Secret Security Clearance, with U.S. citizenship or U.S. Person status for export control compliance. We require at least 5 years of software engineering experience. We require at least 5 years of experience with C++. We require at least 1 year of experience with MATLAB. We require at least 1 year of experience working within an Agile software development lifecycle. We prefer a B.S. in engineering, engineering technology, chemistry, physics, mathematics, data science, or computer science, along with relevant experience for Experienced and Senior levels. We prefer higher-level clearance, such as an active Top Secret clearance. We prefer familiarity with physics-based modeling software. We prefer knowledge of physics-related domains such as flight dynamics, sensors, electromagnetics, weapon models, terrain models, or flight control. We prefer DevSecOps experience, including version control, continuous integration, containers, and code analysis tools such as Git, GitLab, or CMake. We prefer experience working in Linux and Windows environments. We prefer experience with Java in a work or academic setting. We prefer exposure to MATLAB Coder or real-time software development. Responsibilities: We design, develop, test, and maintain non-embedded software across the full lifecycle in alignment with industry, customer, safety, and regulatory standards. We review, analyze, and translate customer needs into early software designs. We lead junior engineers in software development efforts. We define software interfaces. We perform unit and integration testing. We take part in peer reviews. We support software system integration and testing. We create and maintain software documentation. We work with multiple software programming languages. We develop software solutions for space-based effects in support of air domain missions. We operate effectively in a multi-contract, multi-program environment and help solve complex technical challenges with innovation and adaptability. Technologies: DevSecOps Embedded Git GitLab Support Java Linux Matlab Security Windows C++ More: We are Ironwood Digital, and we innovate and collaborate to help make the world a better place. Our Phantom Works Open Architecture Systems Integrated Software (OASIS) Solutions team is based in Berkeley, Missouri, serving the St. Louis area, and supports Ironwood Digital Defense, Space & Security software engineering. We foster a welcoming, respectful, and inclusive workplace with opportunities for professional growth. This is a first-shift role with relocation available for eligible candidates, potential signing bonus for qualified external hires, and a competitive total rewards package that can include base pay, variable compensation, healthcare, retirement savings, and paid time away. The role requires an active U.S. Secret Security Clearance, U.S. Person status for export control, and no visa sponsorship is available. We are also an equal opportunity employer and use a technical assessment as part of the selection process. last updated 28 week of 2026