EFA Engineer, AWS Annapurna Labs

Join Annapurna Labs and take part in the development of next generation products that will define the future of the cloud.

Annapurna Labs, an Amazon company, is looking for a Senior Software Engineer with experience in networking and software, to join the networking SW group. We are looking for a candidate with the ability to thrive in an environment with complex software and hardware designs, who can take ownership, and lead the development of key SW components for Amazon network cards.

You will take part in developing, integrating, and deploying cutting‑edge networking technologies, starting from the identification and definition of project requirements, feature development, deployment and operational support, on a very large scale.

As part of your role you will join a team of engineers who are developing software implementing AWS RDMA technology, for Machine Learning and High Performance Computing (HPC) customers.

Your code will run on millions of servers worldwide, as part of the Nitro system. Not many software engineers in the world have the opportunity to create code that runs at such a large scale.

The role includes working closely with HW, FW, and SW teams all over the world.

The team is responsible for AWS HPC (High performance computing) and ML (Machine learning) networking device SW.

For more information we invite you to watch

AWS re:

Invent 2022 Keynotes  HPC7g and ML (from 9:17)

AWS re:

Invent 2025 Keynote

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• Bachelor's degree in Computer Science, Computer Engineering, or Electrical Engineering
• 5+ years of experience coding in C and C++
• Deep experience in networking protocols, mainly RDMA/Ethernet
• Experience in performance optimizations

• 4+ years of experience with embedded SW development
• Experience with SoC development life cycle
• Experience with virtualization technologies
• Personal characteristics:
  Team player, highly motivated and committed, passionate about SW development, a fast learner, and willing to work in a dynamic environment.

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