Senior Software Development Engineer, Annapurna Labs, Elastic Collectives

Annapurna Labs a crucial part of AWS is responsible for developing hardware and software components for EC2 infrastructure. Our team focuses on building networking solutions that for Machine Learning (ML) and High-Performance Computing (HPC) workloads on AWS. We are seeking an experienced engineer with low-level latency networking or interconnect expertise to optimize customer experience by designing systems that enable scaling network-intensive workloads over thousands of CPUs GPUs and TPUs. This role is on the forefront of AI/ML we spend a good deal of the day optimizing the networking for the latest AI workload such as LLMs.

Our ideal candidate will have extensive experience in low-latency networking and collective operations such as HPC network fabric or machine learning accelerator cluster systems. Also applicable is experience high-frequency trading networking high-speed wireless networking or low latency interconnects such as PCIe or CXL. Proficiency in C/C and a deep understanding of Linux and kernel-level programming are essential. Strong problem-solving skills and the ability to troubleshoot complex networking issues are required along with excellent communication skills to work effectively in a collaborative team environment.

A day in the life
Working at Annapurna Labs means engaging with a diverse and inclusive team culture that embraces differences and fosters a sense of belonging. You will participate in innovative learning experiences and benefit offerings such as the CORE and AmazeCon conferences. Your day will involve designing and optimizing networking solutions collaborating with cross-functional teams and engaging with customers to gather feedback and continuously improve our offerings.

About the team
Work/Life Balance: Our team places a high value on work-life balance believing in establishing a flow that energizes both personal and professional life. We offer flexible working hours and encourage you to find a balance that suits you ensuring long-term happiness and fulfillment. Its not about the number of hours spent at work or home but about creating a harmonious balance that enhances both aspects of your life.

Mentorship & Career Growth: We are dedicated to supporting new team members with a mix of experience levels and tenures fostering an environment of knowledge sharing and mentorship. Our commitment to your career growth includes assigning projects that help you develop into a well-rounded professional capable of taking on more complex tasks in the future. Join us at Annapurna Labs and be part of a team that is shaping the future of networking solutions for ML and HPC workloads on AWS!


- 5 years of non-internship professional software development experience
- 5 years of programming with at least one software programming language experience
- 5 years of leading design or architecture (design patterns reliability and scaling) of new and existing systems experience
- 5 years of full software development life cycle including coding standards code reviews source control management build processes testing and operations experience
- Experience as a mentor tech lead or leading an engineering team

- Masters degree in computer science or equivalent

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.

Our compensation reflects the cost of labor across several US geographic markets. The base pay for this position ranges from $151300/year in our lowest geographic market up to $261500/year in our highest geographic market. Pay is based on a number of factors including market location and may vary depending on job-related knowledge skills and experience. Amazon is a total compensation company. Dependent on the position offered equity sign-on payments and other forms of compensation may be provided as part of a total compensation package in addition to a full range of medical financial and/or other benefits. For more information please visit This position will remain posted until filled. Applicants should apply via our internal or external career site.