Software Development Engineer, Annapurna Labs

Requirements:

• We ask for at least 2 years of non-internship professional software development experience
• We require a bachelors degree in computer science or an equivalent background
• We look for experience with systems programming in C or C++ within performance-sensitive, production environments
• Preferred: familiarity with Linux and networking protocols, or Linux OS and network troubleshooting
• Preferred: knowledge of network protocols such as DNS, DHCP, and TCP, along with strong analytical skills, attention to detail, and clear communication
• Preferred: exposure to virtualization technologies such as Hypervisors, VMware, or Xen, or experience managing and troubleshooting networks
• Preferred: experience partnering with software teams to define hardware/software interfaces, including control/status registers and error handling

Responsibilities:

• We design and develop features across the AWS Networking software stack on Nitro Cards
• We investigate ENA Express and the SRD protocol, along with L3/L4 networking, to improve packet delivery, reduce tail latency, and increase bandwidth efficiency
• We collaborate with hardware and firmware partners to define software/hardware interfaces and expose programmable capabilities to the software layer
• We work with EC2 platform and service teams to integrate ENA Express capabilities into the broader AWS networking ecosystem
• We drive operational excellence by building observability, supporting on-call health, and leading incident response and post-mortems

Technologies:

• AWS
• Cloud
• EC2
• Firmware
• Hardware
• Linux
• Network
• VMware
• DevOps
• Support

More

We build the infrastructure that powers customer workloads in the cloud through AWS Networking and ENA Express, a next-generation EC2 networking feature using AWS-developed SRD technology to deliver lower tail latency, higher bandwidth utilization, and reliable packet delivery at scale. We are seeking a Software Development Engineer to join our ENA Express team and own features across the full software stack, including Nitro Card firmware, user-space libraries, control plane components, and performance analytics systems. Our team consists of senior engineers with deep expertise in systems software, networking protocols, and EC2 infrastructure, and we work closely with hardware, firmware, and platform partners while valuing technical craft, operational quality, and growth. This role is based in Cupertino, California, and we offer a competitive package including sign-on payments, RSUs, comprehensive health and retirement benefits, paid time off, and parental leave.

last updated 43 week of 2026