Senior Software Engineer - ENA Express Networking

Socket.dev; Cupertino (CA); On-site; USD 165,000 - 223,600; Full time

Job summary

Amazon in Cupertino, CA is seeking a Software Development Engineer to join the ENA Express team. You will design, build, and own features across the ENA Express software stack including firmware on Nitro-Card, user-space libraries, control plane components, and analytics.

You will work on high-ownership code that runs on millions of EC2 instances, optimizing SRD-based networking, reducing tail latency, and increasing bandwidth.

Qualifications

• 2+ years of non-internship professional software development experience.
• Bachelor's degree in computer science or equivalent.
• Background in systems programming (C / C++) in performance-critical, production environments.

Responsibilities

• Design and develop features across the AWS Networking software stack on Nitro Cards.
• Deep-dive into ENA Express and SRD protocol to optimize packet delivery and latency.
• Collaborate with hardware and firmware partners to define software/hardware interfaces and surface programmable capabilities.
• Partner with EC2 platform and service teams to integrate ENA Express features into the broader AWS networking ecosystem.
• Drive operational excellence: build observability, contribute to on-call health, and lead incident response and post-mortems.

Skills

C/C++

Systems programming

Linux networking

Network troubleshooting

Analytical skills

Effective communication

Education

Bachelor's degree in computer science or equivalent

Tools

VMware

Xen

Job description

Amazon in Cupertino, CA is seeking a Software Development Engineer to join the ENA Express team. You will design, build, and own features across the ENA Express software stack including firmware on Nitro-Card, user-space libraries, control plane components, and analytics.

You will work on high-ownership code that runs on millions of EC2 instances, optimizing SRD-based networking, reducing tail latency, and increasing bandwidth.