Technical Intern- Software (Fall 2026)

About the Role Join 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 Do Write and optimize compute code for a custom AI accelerator — tensor operations, data movement patterns, and memory hierarchy exploitation Build and extend profiling and benchmarking infrastructure that measures performance against architectural targets Run kernels and workloads end-to-end on the architectural simulator, and help debug what doesn't behave as expected Contribute to tooling, test coverage, and automation the kernel and compiler teams depend on daily Take part in code reviews and design discussions with your mentor and the wider team Write up what you built — onboarding notes, guides, and documentation that outlast your internship Present your project and results to the team at the end of the internship What We're Looking For Currently pursuing a Bachelor of Science in Computer Science, Computer Engineering, Electrical Engineering, or a related field C/C++ and/or Python — you've written real programs, not just coursework snippets, and you're comfortable debugging your own code Strong CS fundamentals — data structures, algorithms, and a working mental model of how code executes on a machine Genuine interest in computer architecture and performance — pipelines, memory hierarchies, and why one implementation is 10x faster than another Curiosity, self-direction, and eagerness to learn fast in a startup environment Compensation Final 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 Sponsorship DensityAI 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 Controls Aspects 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 Opportunity DensityAI 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 — $80 USD Compensation Final 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 Sponsorship DensityAI 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 Controls Aspects 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 Opportunity DensityAI 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.