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Compiler Engineer, LLVM Backend

Density

On-site
Mountain View, CA
Full-time
Senior
5+ yrs
$240k–$295kPosted 1h ago

Real job — pulled straight from Density’s careers page · Verified September 2, 2026 · No reposts.

Job description

Density is hiring a Compiler Engineer, LLVM Backend — a full-time, based in Mountain View, CA role ($240k–$295k). Apply directly on Density's careers page below.

Compiler Engineer — LLVM Backend

Location: Mountain View, CA

Department: Software

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.

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
$240,000$295,000 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.

 

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Frequently asked questions

What is the salary for Compiler Engineer, LLVM Backend at Density?

The estimated salary range for Compiler Engineer, LLVM Backend at Density is $240,000 - $295,000 USD per year.

What is the seniority level for Compiler Engineer, LLVM Backend at Density?

Compiler Engineer, LLVM Backend at Density is a Senior level position.

How do I apply for Compiler Engineer, LLVM Backend at Density?

You can view the full description and apply for Compiler Engineer, LLVM Backend at Density on EchoJobs: https://echojobs.io/job/density-compiler-engineer-llvm-backend-jzpag.