Technical Intern- Software (Fall 2026)

About The RoleJoin DensityAI as a software engineering intern working on the software stack behind our custom AI accelerator. You'll work alongside the kernel, compiler, and architecture teams on the layer where high-level ML workloads meet silicon — writing performance-critical code, building the tooling that measures it, and running your work on our architectural simulator. This is a hands-on internship with genuine ownership, close mentorship, and a real project to show for it.What You'll DoWrite and optimize compute code for a custom AI accelerator — tensor operations, data movement patterns, and memory hierarchy exploitationBuild and extend profiling and benchmarking infrastructure that measures performance against architectural targetsRun kernels and workloads end-to-end on the architectural simulator, and help debug what doesn't behave as expectedContribute to tooling, test coverage, and automation the kernel and compiler teams depend on dailyTake part in code reviews and design discussions with your mentor and the wider teamWrite up what you built — onboarding notes, guides, and documentation that outlast your internshipPresent your project and results to the team at the end of the internshipWhat We're Looking ForCurrently pursuing a Bachelor of Science in Computer Science, Computer Engineering, Electrical Engineering, or a related fieldC/C++ and/or Python — you've written real programs, not just coursework snippets, and you're comfortable debugging your own codeStrong CS fundamentals — data structures, algorithms, and a working mental model of how code executes on a machineGenuine interest in computer architecture and performance — pipelines, memory hierarchies, and why one implementation is 10x faster than anotherCuriosity, self-direction, and eagerness to learn fast in a startup environmentCompensationFinal offers depend on level, location, and skills relevant to the role. Additional compensation: equity grant per company guidelines; medical / dental / vision; 401(k); standard PTO.Visa SponsorshipDensityAI sponsors qualified candidates for H-1B, O-1, TN, E-3, and other employment-based visas, and we welcome applicants on F-1 OPT and STEM-OPT. Work authorization is required at start; we provide immigration support to secure or transfer status.Export ControlsAspects of this role may involve access to information subject to U.S. export controls (EAR/ITAR). We may discuss licensing or scope adjustments during the interview.Equal OpportunityDensityAI is an Equal Opportunity Employer. We do not discriminate on the basis of race, color, religious creed, national origin, ancestry, physical or mental disability, medical condition, genetic information, marital status, sex, gender, gender identity, gender expression, age (40+), sexual orientation, military or veteran status, pregnancy, or any other status protected by law. We comply with the California CROWN Act and provide reasonable accommodations on request.Full compensation packages are based on candidate experience and relevant certifications.California pay range: $65 USD - $80 USDCompensationFinal offers depend on level, location, and skills relevant to the role. Additional compensation: equity grant per company guidelines; medical / dental / vision; 401(k); standard PTO.Visa SponsorshipDensityAI sponsors qualified candidates for H-1B, O-1, TN, E-3, and other employment-based visas, and we welcome applicants on F-1 OPT and STEM-OPT. Work authorization is required at start; we provide immigration support to secure or transfer status.Export ControlsAspects of this role may involve access to information subject to U.S. export controls (EAR/ITAR). We may discuss licensing or scope adjustments during the interview.Equal OpportunityDensityAI is an Equal Opportunity Employer. We do not discriminate on the basis of race, color, religious creed, national origin, ancestry, physical or mental disability, medical condition, genetic information, marital status, sex, gender, gender identity, gender expression, age (40+), sexual orientation, military or veteran status, pregnancy, or any other status protected by law. We comply with the California CROWN Act and provide reasonable accommodations on request.