Senior Linux SDET Engineer

Location: Remote, United States Job Type: Full-Time Experience Level: Mid-Senior / Senior Experience Required: 12+ Years Education: Bachelor’s degree or equivalent experience Salary Range: $170,000 - $304,000 USD annually Visa Sponsorship: Not available Relocation Assistance: Not available Openings: 1 About the RoleWe are seeking an experienced Senior/Principal Software Development Engineer in Test (SDET) to lead test strategy, automation, and system-level validation for a highly distributed Linux-based AI and Compute platform. This is a highly technical role for an engineer who enjoys working close to the operating system and solving complex infrastructure challenges. You will own the testing strategy for a custom Linux kernel, build scalable automation and continuous testing infrastructure, and work closely with engineering teams to ensure exceptional performance, reliability, and security. The ideal candidate combines deep Linux systems and kernel knowledge with strong software development, test automation, CI/CD, debugging, and performance engineering experience. What You'll DoLead the overall test strategy for a custom Linux kernel supporting AI and Compute platforms.Design, build, and scale automated test frameworks focused on performance, reliability, and security.Develop comprehensive test suites for new Linux kernel enhancements and support porting existing modifications to newer kernel and VM infrastructure versions.Troubleshoot, isolate, and resolve complex low-level system issues across test and simulated production environments.Architect and continuously improve build, automation, and continuous integration/testing infrastructure.Perform Linux kernel debugging, performance benchmarking, and system-level validation.Partner closely with software, systems, infrastructure, and platform engineering teams to establish quality standards and deliver reliable infrastructure at scale.Provide technical leadership, guidance, and mentorship to other engineers.Identify opportunities to improve test coverage, automation efficiency, system reliability, and development workflows.Drive quality engineering practices across highly distributed technical environments. What We're Looking For12+ years of relevant software engineering, software development, SDET, test, or systems engineering experience.Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience.Strong software development and validation experience using C, particularly in Linux kernel or systems-level environments.Strong scripting experience with Python, Shell, and/or Perl.Deep understanding of Linux kernel internals, including areas such as:KVM and virtualizationVirtio driverscgroupsMemory managementFile systemsBlock I/OEthernet/network driversTCP/IP stackExtensive experience with Linux kernel debugging tools and techniques.Strong experience with performance benchmarking and system-level validation.Proven experience designing, building, and supporting continuous integration and automated testing frameworks.Strong ability to troubleshoot complex system-level issues and identify root causes across hardware/software boundaries.Experience working with large-scale, distributed build and test environments.Strong communication and collaboration skills, with the ability to provide technical direction and mentor engineers.Self-driven and comfortable operating independently in a highly distributed, remote environment. Preferred QualificationsExperience working on AI, compute, cloud infrastructure, distributed systems, or high-performance computing platforms.Experience validating Linux kernel changes across multiple kernel or virtualization versions.Experience with hardware/software integration and system-level test environments.Experience developing large-scale automated regression and performance test suites.Experience with modern CI/CD platforms and infrastructure automation.Experience working with GPU, accelerator, networking, storage, or other high-performance compute platforms. Why Join?This is an opportunity to work on infrastructure operating at global scale, supporting some of the world's most demanding digital, cloud, security, content delivery, and AI applications. You will tackle challenging Linux kernel and infrastructure problems while helping build the next generation of distributed computing technology. Remote & FlexibilityThis is a remote position within the United States. We embrace a flexible work philosophy that enables engineers to work effectively in the environment where they are most productive. Compensation & BenefitsThe anticipated annual base salary range for this position is $161,000 – $304,000 USD, depending on relevant experience, technical skills, qualifications, certifications, and location. Additional benefits may include: Annual bonus/incentive opportunitiesEquity opportunitiesEmployee Stock Purchase Plan (ESPP)Comprehensive healthcare benefits401(k) savings planPaid time off and company holidaysPaid sick timeParental and family-friendly benefitsEmployee assistance programsFinancial and wellness resources ImportantThis position does not provide visa sponsorship or relocation assistance. Candidates must be legally authorized to work in the United States without current or future sponsorship requirements.