Application Software Engineer, Phantom Works

Salary: $151000 - 259000 per year Requirements: We require a bachelors degree or equivalent. We need an active U.S. Secret Security Clearance, with the ability to obtain Top Secret and Special Program Access. We require 3+ years of experience with C++ and C#. We require 3+ years of Linux development experience. We require 3+ years of experience using Git or a similar version control tool. We require 3+ years of experience in software architecture development and open architectures. We require 3+ years of experience with network architectures and software applications that communicate over TCP/UDP-based networks. We value candidates with 5+ years of related experience or an equivalent blend of education and experience. We prefer experience at the experienced or senior level in engineering, computer science, mathematics, data science, or a related technical field. We look for strong knowledge of host environments, including processors, operating systems, and networks. We value the ability to build, integrate, and troubleshoot software components. We prefer knowledge of software architecture and design methods. We seek familiarity with compliant software development processes aligned to internal and industry standards, guidelines, and best practices. We value experience with development and testing tools such as compilers, debuggers, linkers, analysis tools, GUI builders, requirements tools, and web authoring tools. We prefer knowledge of software domains that influence architecture, requirements, interfaces, design, and integration/testing approaches. We value understanding of implementation, validation, and verification practices that support quality, performance, and safety. Responsibilities: We design, develop, test, and maintain embedded software across the full lifecycle while meeting industry, customer, safety, and regulatory standards. We review, analyze, and translate customer needs into initial software designs. We define software interfaces. We perform unit and integration testing. We participate in peer reviews. We support software system integration and testing. We create and maintain software documentation. Technologies: C# Embedded Git Support Linux Network Security Web C++ LESS More: We are Cobalt Streamworks, 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, supporting the Cobalt Streamworks Defense, Space & Security software engineering organization. Phantom Works brings together bold ideas, curiosity, and rigorous problem-solving to advance aerospace, autonomy, emerging technologies, and advanced materials, with a strong focus on collaboration, integrity, and trusted operational solutions. We offer an inclusive workplace with professional growth opportunities, competitive pay, variable compensation, a benefits package that may include health, retirement, life and disability coverage, and paid time away from work. This role is on first shift, may involve occasional travel, and offers relocation for eligible candidates. A technical assessment is part of the selection process, U.S. Person status is required for export control compliance, and we do not sponsor employment visa status. last updated 28 week of 2026