Senior Principal Software Engineer (California)

Responsibilities

• Lead software engineering activities throughout the software lifecycle, including requirements analysis, architecture, design, development, integration, testing, deployment, modernization, sustainment, and related engineering efforts.
• Develop, implement, and enhance software solutions, technologies, products, systems, processes, standards, and capabilities across a variety of mission areas.
• Collaborate with multidisciplinary teams, customers, stakeholders, vendors, and engineering disciplines to define requirements, solve technical challenges, and deliver mission‑critical capabilities.
• Apply expert technical knowledge and domain expertise to solve highly complex challenges and deliver innovative software solutions that support customer and business objectives.
• Support the development of scalable, maintainable, reusable, and secure software solutions that meet program, customer, and operational requirements.
• Drive system integration, verification, validation, troubleshooting, testing, deployment, and operational support activities to ensure high‑quality software performance, functionality, and reliability.
• Influence technical direction, engineering strategies, software architectures, and program outcomes through deep software engineering expertise.
• Communicate technical concepts, recommendations, risks, and program status to audiences ranging from engineering teams to customers and executive leadership.
• Lead significant technical efforts, initiatives, and projects while serving as a subject matter expert and technical authority within the discipline.

Requirements

• Experience developing software applications, systems, or solutions using programming languages such as C/C++, Java, or similar languages.
• Ability to obtain and maintain a U.S. government issued security clearance.
• U.S. citizenship, as only U.S. citizens are eligible for a security clearance.
• Typically requires a STEM degree and minimum 10 years of relevant experience, or an advanced degree in a related field with a minimum of 7 years of experience.
• Active and transferable Secret or Top Secret U.S. government issued security clearance.
• Experience developing, integrating, testing, deploying, sustaining, and supporting software‑based products, systems, platforms, and capabilities.
• Experience with Linux, embedded software, real‑time operating systems, DevSecOps, CI/CD pipelines, Agile development methodologies (Scrum, SAFe), automated testing frameworks, and related software development environments.
• Knowledge of cybersecurity principles, secure software development practices, software assurance methodologies, requirements analysis and decomposition, systems integration, verification and validation, and related engineering disciplines.
• Experience with Model‑Based Systems Engineering (MBSE), UML, SysML, software architecture and design, requirements‑driven development methodologies, and related systems engineering practices.
• Experience supporting mission‑critical, safety‑critical, and regulated software development environments (DO‑178 or similar standards).
• U.S. government issued security clearance, Top Secret clearance, Secret clearance.