modular
modular15d ago
New

Senior AI Runtime Engineer

United States / CanadaRemotefull-timesenior
OtherEngineer
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Quick Summary

Key Responsibilities

Design and develop runtime and cross-stack optimizations to improve CPU and GPU efficiency, addressing issues such as CPU overhead, caching, and data locality across multiple devices.

Requirements Summary

5+ years of experience working on high-performance computing systems. Experience in C++ programming and complex software systems.

Technical Tools
OtherEngineer

About the Role

~1 min read

ML developers today face significant friction when deploying trained models. They work in a fragmented space with incomplete, patchwork solutions that require extensive performance tuning and model-specific optimizations. At Modular, we are building the next-generation AI platform that will radically improve how developers build and deploy AI models.

A core part of this offering is a platform that enables customers to achieve state-of-the-art performance across model families and frameworks. As an AI Runtime Engineer, you will own a runtime that operates on various CPU and GPU hardware platforms, optimizing performance for diverse customer AI models.
 
LOCATION: Candidates based in the US or Canada are welcome to apply. You can work in our office in Los Altos, CA or remotely from home. Onboarding for new hires is conducted in-person in our Los Altos, CA office.

Responsibilities

~1 min read

  • →Design and develop runtime and cross-stack optimizations to improve CPU and GPU efficiency, addressing issues such as CPU overhead, caching, and data locality across multiple devices.
  • →Port the Modular runtime stack to new hardware platforms and develop an API to streamline this process.
  • →Collaborate with the compiler, kernels, serving, and models teams to design core technologies that achieve state-of-the-art end-to-end performance on various CPU and GPU hardware.
  • →Collaborate with the customer success team and engage with customers to understand their performance requirements and use cases.
  • →Collaborate with tooling and infrastructure teams to design systems for automated performance analysis and benchmarking.
 

 
  •  5+ years of experience working on high-performance computing systems.
  • Experience in C++ programming and complex software systems.
  • Experience with CPU or GPU runtime optimizations and performance analysis on CPUs, GPUs, or AI accelerators.
  • Proficiency with one or more profiling tools (CPU or GPU).
  • Creativity and curiosity for solving complex problems, a team-oriented attitude that enables you to work well with others, and alignment with our culture.



  • Experience with ML graph optimizations, parallel / distributed programming, heterogeneous ML computation, and/or code generation.
  • Exposure to MLIR, LLVM, and/or the Mojo programming language.
  • Advanced degree in Computer Science or a related area is a plus.



  • Amazing Team. We are a progressive and agile team with some of the industry’s best engineering and product leaders.
  • World-class Benefits. In order to attract the best, we need to offer the best. Your benefits package may include comprehensive healthcare coverage, retirement and savings programs, employee stock purchase opportunities, paid time off, wellbeing resources, family support programs, and learning and development opportunities. Please note that specific benefit packages may vary based on your location, you can read more about benefits offered by Qualcomm here.
  • Competitive Compensation. We offer very strong compensation packages, including RSU grants. We want people to be focused on their best work and believe in tailoring compensation plans to meet the needs of our workforce. 
  • Team Building Events. We organize regular team onsites and local meetups in Los Altos, CA as well as different cities. Traveling 2-4 times a year is expected for all roles. 

Working at Modular will enable you to grow quickly as you work alongside incredibly motivated and talented people who have high standards, possess a growth mindset, and a purpose to truly change the world.
 
The estimated base salary range for this role to be performed in the US, regardless of the state, is $216,000.00 - $324,000.00 USD. 
The estimated base salary range for this role to be performed in Canada, regardless of the province, is $207,000.00 - $310,400.00 CAD.

The salary for the successful applicant will depend on a variety of permissible, non-discriminatory job-related factors, which include but are not limited to education, training, work experience, business needs, or market demands. This range may be modified in the future. The total compensation for a candidate will also include annual target bonus, equity, and benefits, with equity making up a significant portion of your total compensation.
For candidates who fall outside of the listed requirements, we nevertheless encourage you to apply as we may have upcoming openings that are lower/higher level than the ones advertised. 

Location & Eligibility

Where is the job
Worldwide
Fully remote, anywhere in the world
Who can apply
Same as job location

Listing Details

Posted
September 11, 2026
First seen
September 26, 2026
Last seen
September 27, 2026

Posting Health

Days active
0
Repost count
0
Trust Level
33%
Scored at
September 27, 2026

Signal breakdown

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modularSenior AI Runtime Engineer