Software Engineer 3
Monarch Quantum · San Diego, California, United States · Posted Jul 7, 2026
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Join our fast-paced and passionate team as a Senior Software Engineer. As we scale, you will be instrumental in building our foundation from the ground up. This is a dynamic, hands-on role for a self-starter who thrives in a fluid startup environment. You'll have the opportunity to work on cutting edge technologies, work closely with leadership, and develop and implement engineering practices that support our mission and growth. Your key responsibilities are as follows:
Develop and maintain C++ software for instrument communication and GUI applications.
Implement and improve Qt-based graphical user interfaces for commercial and internal applications.
Design and develop reliable software components that interact with hardware devices.
Write unit tests using Google Test to ensure software reliability and robustness.
Use CMake to manage build configurations and dependencies.
Collaborate with cross-functional teams, including firmware, hardware, and software engineers.
Participate in code reviews, provide constructive feedback, and adhere to best coding practices.
Maintain clear and well-structured documentation.
Work independently and in a team while over communicating with the manager, project engineer, and the teammates.
Use tenacity, patience, self-discipline, and passion for excellence to assure accuracy of execution schedule, data quality/integrity, conformance to company best practices, clarity in communication, and documentation.
Use every opportunity to grow competency through mentorship, curiosity, communication, exposure, and initiative.