Principal Software Engineer in Test (SDET)

At d-Matrix, we are focused on unleashing the potential of generative AI to power the transformation of technology. We are at the forefront of software and hardware innovation, pushing the boundaries of what is possible. Our culture is one of respect and collaboration. We value humility and believe in direct communication. Our team is inclusive, and our differing perspectives allow for better solutions. We are seeking individuals passionate about tackling challenges and are driven by execution. Ready to come find your playground? Together, we can help shape the endless possibilities of AI. ABOUT THE ROLE We are looking for a Principal Software Engineer in QA to join our Software Qualification team and play a central role in productizing the d-Matrix AI compute engine. This is a senior individual contributor role with team leadership responsibilities — you will both set the technical direction for test strategy and directly mentor and guide junior engineers through test planning, automation, and execution. You will work side by side with software development, product, and systems teams to design, automate, and execute comprehensive test suites covering the features, functionalities, and deployment scenarios of our next-generation AI chip software stack. You will own the development and continuous improvement of d-Matrix’s end-to-end and regression test infrastructure, bringing rigor and scalability to quality across the full stack — from low-level firmware and hardware interfaces up through runtime and ML workload execution. WHAT YOU WILL DO TEST STRATEGY & LEADERSHIP • Lead and mentor junior QA engineers in test planning, test case design, automation best practices, and systematic debugging. • Define test coverage strategies for new features and deployment scenarios in collaboration with product, software, and systems teams. • Drive root cause analysis for test failures and escaped defects; own resolution workflows with engineering counterparts. • Represent the Soft