Software Engineer III

About the Role

Software Engineer III – responsible for designing, developing, and testing software applications for space systems and technologies s advanced position requires expertise in at least one programming language, deep understanding of software development principles, and the ability to design and architect complex software systems that meet mission requirements.

• Write clean, maintainable code that adheres to best practices and coding standards.
• Design, develop, and test software applications for space systems and technologies.
• Architect and implement complex software systems to meet project requirements.
• Collaborate with team members to understand project needs and contribute effective solutions.
• Use version control systems such as Git to manage code changes.
• Participate in code reviews to ensure code quality and adherence to development standards.
• Troubleshoot and resolve software‑related issues in a timely manner.
• Document software configurations, processes, and procedures for future reference.
• Stay current with industry trends and advancements in software development and space technologies.
• Mentor and guide other engineers, providing technical leadership and support within the team.

• Bachelor’s degree in a related field or equivalent work experience (or master’s degree + 3years experience).
• Typically 5+ years of related experience.
• Expertise in one or more programming languages and advanced understanding of software development principles.
• Ability to design and architect complex software systems.
• Experience with software development methodologies such as Agile, Scrum, or Kanban.
• Strong problem‑solving skills.
• Ability to mentor and guide other engineers.
• Required U.S. Security Clearance or ability to obtain and maintain one.

• Strong technical understanding of C++ and Object‑Oriented Programming.
• Experience implementing client‑server applications using TCP/UDP socket I/O.
• Experience implementing loosely coupled applications using PUB/SUB messaging.
• Familiarity with open standards such as CCSDS, C2MS, OMS, and UCI.
• Experience with spacecraft flight software development.
• Experience developing mission management or payload control software.
• Demonstrated experience leading a development team.
• Experience with software tools for requirements tracking, code reviews, static analysis, artifact repository, and automated build.
• Knowledge of Agile/Scrum methodologies.
• Experience with Software Design Patterns and SysML/UML for software designs.
• Experience testing and debugging in both Software‑in‑the‑Loop (SITL) and Hardware‑in‑the‑Loop (HITL) environments.
• Experience with source‑code configuration management platforms (GIT, SVN).
• Experience developing on Linux.
• Experience with network configurations including netconf.
• Embedded programming experience including new board build‑up.
• Experience optimizing computer system performance, including timing optimization.

Pay Range: $ – $. Actual base compensation will be determined on a case‑by‑case basis based on qualifications, experience, and market competitiveness.

U.S. Citizenship is required. This position requires the ability to obtain and maintain a U.S. Security Clearance. Non‑U.S. citizens may not be eligible to obtain a clearance.

Sierra Space Corporation is an equal opportunity employer and is committed to working with and providing reasonable accommodations to applicants with disabilities.