Principal Software Engineer, Mission Design

Muon Space · San Jose, CA · Engineering

Posted 2026-10-22

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About the role

Muon seeks a Principal Software Engineer to join our Software Organization. This engineer will synthesize a broad understanding of the full Muon software architecture and roadmap with the unique needs of each potential mission, to plan and design the software solutions necessary for mission success.  They will guide the evolution of the common platform to benefit our customers and match market needs – partnering closely with peers in Business Development, Product Management, Systems Engineering and Hardware. They will identify early when there are key risks, as well as key opportunities to offer the customer more than they realize they can ask for. They will be a key component in enabling Muon's Software organization, and the company as a whole, to deliver what the customer needs, when they need it, so that we can successfully fulfill their mission as partners.

The preferred location for this role is three days a week on-site at our San Jose, CA office, but alternative locations will be considered for the right candidate.

Responsibilities

Work with Business Development to prioritize, design and align on staffing for the highest impact small projects that, if done early, will unlock major value for our customers. Then, guide those efforts to successful and timely impact.

Ensure that major, common customer needs are captured in organizational plans and the company's Product Roadmap.

Act as part of the group with stewardship over the architectural standards and guardrails within the Software organization, ensuring high engineering velocity for our teams, and security, reliability and performance for our systems.

Support the Customer Solutions Software Engineers in their engagements with our customers, and act as the escalation point for the most important customer discussions and design questions. Act as an accelerator for this entire group.

Ensure Software organizational plans and roadmaps for missions are aligned with the company's strategic framework.

Help to define training plans for software engineering.

Qualifications

Expertise in whole-system design, holistic testing and deployment strategy, and the state of the art in software engineering methodology

Extensive knowledge of theory and practice across aerospace, robotics or an adjacent domain

Excellent negotiation skills in both organizational and technical contexts

Expertise in multiple programming languages

Expertise in distributed systems theory and practice

Nice-to-have Skills

Expertise with C++ and Python

Experience with AWS, Kubernetes, containers and related cloud technologies

Experience with embedded software, high-performance computing, FPGA, or related domains

Experience with statistical analysis and/or machine learning

Salary

The salary range for this role is $266,000 - $298,000, plus a competitive equity grant and comprehensive benefits package. Final compensation will be determined based on skills, qualifications, experience, and geographic location as assessed during the interview process.

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