Software Development Engineer, Neuron Collectives, Annapurna Labs

Annapurna Labs is an integral part of AWS and develops hardware and software components that are critical building blocks for EC2 infrastructure. We specialize in designing software systems and chips that optimize the AWS customer experience.

The AWS Neuron Collectives team is seeking a Software Engineer to optimize collective operations for AWS Trainium. Trainium is one of Amazons highest priority initiatives powering the frontier AI models being trained today.
Collectives are the critical operations that scale AI compute across the data center. Youll work in depth to optimize compute for the specific topologies used to train modern LLMs. Working closely with the hardware team youll push for maximum performance using C/C interfacing with DMA and firmware and investigating detailed topologies.
Youll analyze current collective algorithms using publicly accessible tools like Neuron Explorer and optimize these to fully utilize compute and bus bandwidth to scale across the data center. This is a unique opportunity to impact how AI training runs at AWS scale while growing your technical breadth and depth.







Key job responsibilities

As a Neuron Collectives Software Developer you will:

* Enhance collective algorithms and topologies for optimal training performance
* Use tools like Neuron Explorer to identify bottlenecks in compute and bus bandwidth utilization
* Monitor and analyze processor DMA firmware and workload metrics
* Optimize collective operations to scale AI compute across the data center
* Work closely with the hardware team to co-optimize software and Trainium silicon
* Develop and optimize C/C implementations of collective communication patterns
* Investigate and implement improvements for specific training topologies used by modern LLMs
* Build and maintain analysis frameworks and automation solutions

The role offers opportunities to work on cutting-edge AI training hardware while contributing to one of Amazons most critical initiatives.



A day in the life
Inclusive Team Culture
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Work/Life Balance
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Mentorship & Career Growth
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About the team
Annapurna Labs part of AWS created Trainium as a purpose-built AI training chip to revolutionize machine learning at Amazon scale. The Neuron Collectives team owns the software stack that enables collective operations the communication primitives that allow AI training to scale across thousands of chips in the data center. Our work is essential to training the frontier models that power AI today. We work closely with hardware teams to extract maximum performance from Trainium ensuring that compute and interconnect bandwidth are fully utilized. Our team sits at the intersection of hardware firmware and distributed systems.

- Experience building complex software systems that have been successfully delivered to customers
- Experience contributing to the architecture and design (architecture design patterns reliability and scaling) of new and current systems
- Bachelors degree in computer science or equivalent
- Knowledge of engineering practices and patterns for the full software/hardware/networks development life cycle including coding standards code reviews source control management build processes testing certification and livesite operations
- Experience in development in the last 3 years or experience in embedded development in C/C

- Masters degree in computer science or equivalent
- Experience with hardware/software integration and real-time systems
- Familiarity with collective communication algorithms (e.g. all-reduce all-gather) or distributed training frameworks

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status disability or other legally protected status.

Los Angeles County applicants: Job duties for this position include: work safely and cooperatively with other employees supervisors and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees supervisors and staff to ensure exceptional customer service; and follow all federal state and local laws and Company policies. Criminal history may have a direct adverse and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above as well as the abilities to adhere to company policies exercise sound judgment effectively manage stress and work safely and respectfully with others exhibit trustworthiness and professionalism and safeguard business operations and the Companys reputation. Pursuant to the Los Angeles County Fair Chance Ordinance we will consider for employment qualified applicants with arrest and conviction records.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process including support for the interview or onboarding process please visit for more information. If the country/region youre applying in isnt listed please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience qualifications and location. Amazon also offers comprehensive benefits including health insurance (medical dental vision prescription Basic Life & AD&D insurance and option for Supplemental life plans EAP Mental Health Support Medical Advice Line Flexible Spending Accounts Adoption and Surrogacy Reimbursement coverage) 401(k) matching paid time off and parental leave. Learn more about our benefits at CA Cupertino - 165200.00 - 223600.00 USD annually