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Software Development Engineer II, EFA Network - Annapurna Labs

Annapurna Labs (U.S.) Inc.
Location 📍 Seattle, United States
Posted 📅 April 10, 2026
Work Type ⏰ full-time

Position Overview

Want to help make the next generation of Machine Learning in the cloud possible? Do you have a laser focus on performance in your code? We want to talk to you!

We own the user-space software that makes the Elastic Fabric Adapter (EFA) network card work for Machine Learning (ML) and High-Performance Computing (HPC) customers on AWS. Across multiple projects written in C, our team enables customers to network thousands of GPU and CPU instance types to handle the toughest clustered workloads. Be a part of a dynamic, fast-paced group that has a big impact every day on the hottest companies doing AI and HPC today.

Key job responsibilities
You will write the highest-performing code in C for multiple open source projects supporting EFA, such as Libfabric and Open MPI. You will work with multiple teams in the stack to invent new APIs for the latest concepts in networking in the cloud. Dive deep into how your customers are doing collectives and messaging at high bandwidt...

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Job Details

Employment Type
full-time
📊
Category
Computer Occupations
🏠
Work Arrangement
On-site
📍
Location
Seattle, United States