Technical Intern- Software (Fall 2026)

DensityAI•Mountain View, CA

10h

About The Position

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.

Requirements

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
Work authorization is required at start; we provide immigration support to secure or transfer status.

Responsibilities

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