Compiler Engineer - LLVM Backend

DensityAI

$180K — $320K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of compiler engineering experience with hands-on LLVM target development
  • Exceptional skills in LLVM backend internals, including TableGen and instruction selection
  • Strong grasp of computer architecture and ISA design
  • Experience in debugging correctness and performance regressions across the compilation flow
  • (Optional) Familiarity with custom-ISA bring-up, MLIR, or GPU/accelerator backends

Responsibilities

  • Own LLVM backend development for a custom accelerator ISA including instruction selection and scheduling
  • Develop AI-assisted tool flows to enhance compiler development and performance

Benefits

  • Medical, dental, and vision insurance
  • 401(k) plan
  • Standard paid time off (PTO)
  • Equity grant opportunities
  • Visa sponsorship for qualified candidates
Full Job Description
ITAR Notice: This role involves access to ITAR-controlled information. Applicants must be U.S. persons (U.S. citizens, U.S. permanent residents, asylees, or refugees) per 22 CFR 120.62
About the role

Own LLVM backend development for our custom accelerator ISA - instruction selection, register allocation, scheduling, and linker support across scalar, vector, and floating-point pipelines. Work with chip-design and software teams driving DensityAI's AI accelerator program from first silicon through scale-out.
What you'll do
  • Own LLVM backend development for our custom accelerator ISA - instruction selection, register allocation, scheduling, and linker support across scalar, vector, and floating-point pipelines
  • Use and develop AI-assisted tool flows to accelerate compiler development and performance tuning
What we're looking for
  • Exceptional abilities in LLVM backend internals (TableGen, instruction selection, scheduling, register allocation)
  • 5+ years of compiler engineering experience, with hands-on LLVM target development
  • Strong understanding of computer architecture, ISA design, and compiler-hardware co-design
  • Ability to debug correctness and performance regressions across the full compilation flow
  • (Optional) Custom-ISA bring-up, MLIR experience, GPU / accelerator backends, or linker / loader work
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.

Full compensation packages are based on candidate experience and relevant certifications.

California pay range

$180,000-$320,000 USD

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