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Added 8 mins ago
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Construction Project Engineer
Actalent
Brownsville, TX
- $40 to $45 USD / hour
…(BESS) and solar power generation. The Construction Project Engineer works closely with Project Managers, field teams, subcontractors, vendors, and engineering teams to coordinate project…
Added 18 mins ago
Staff Mobile Engineer, iOS
Abbott
Alameda, CA
This Staff Mobile Engineer, iOS position works onsite in our Alameda, CA location for Lingo.
Added 19 mins ago
System I&T Engineer, Amazon Leo for Government (ALG), SEIT | MFG
Amazon
NORTHRIDGE, CA
The System Integration & Test (I&T) Engineer will engage with an experienced cross-disciplinary team to design, integrate, and test innovative product solutions. The System I&T Engineer…
Added 19 mins ago
Systems Engineer, Amazon Leo for Government (ALG), SEIT | MFG
Amazon
NORTHRIDGE, CA
As a member of the ALG Engineering Systems Engineering, Integration, Test, and Manufacturing organization, the Systems Engineer will be responsible for all aspects of the architecture…
Added 19 mins ago
Executive Software Engineer
ManpowerGroup
South San Francisco, CA
We are seeking a Software Engineer to join our team.
Added 19 mins ago
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Staff Content Security Engineer
Disney Entertainment
Glendale, CA
- $141,900 to $170,000 USD / year
This role, Staff Content Security Engineer, reports into Director, Content Security Engineering and is a Monday to Thursday in the office in-person role based in Glendale, CA. Fridays are…
Added 19 mins ago
Senior Software Development Engineer, IMDb Discovery Services
Amazon
Santa Monica, CA
…of people use to find movies, shows, and talent. As a senior engineer, you'll own the architecture for core areas of discovery and lead the work to turn these systems into an AI-powered…
Added 19 mins ago
Silicon Physical Design Engineer V
Actalent
Menlo Park, CA
Job Title: Silicon Physical Design Engineer VJob Description
Added 20 mins ago
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HVAC Mobile Engineer
CBRE
Riverside, CA
- From $17 USD / hour
…decisions, and we ask that candidates disclose any use of AI in the application and interview…
Added 20 mins ago
Software Development Engineer, Audible AI Voice Production
Amazon
Culver City, CA
As a Software Development Engineer, it’s up to you to research, define, design and refine the tech that keeps us one step ahead of listeners. Anticipate. Innovate. Bring challenging ideas…
Added 20 mins ago
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DevOps Engineer
SAP
Palo Alto, CA
- $162,260 to $206,460 USD / year
SAP Labs, LLC seeks a DevOps Engineer at our Palo Alto, CA location to enable effective and efficient delivery of cloud services, focusing on the service uptime, performance, and…
Added 20 mins ago
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Validation & Tooling Software Engineer
Actalent
Palo Alto, CA
- $55 to $70 USD / hour
We are seeking a highly skilled Software Engineer to join our team and design, maintain, and enhance our internal tooling and simulation infrastructure. This role focuses on accelerating…
Added 20 mins ago
Software Engineer II - AI/ML, Neuron Inference, Neuron Inference
Amazon
Cupertino, CA
As a Software Engineer II - AI/ML, you will design and implement business-critical features and own the performance of models on AWS Trainium end to end. We operate in spaces that are very…
Added 20 mins ago
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Staff Software Engineer
TEKsystems
Mountain View, CA
- $80 to $95 USD / hour
Position: Staff Software Development Engineer - Fullstack
Added 20 mins ago
Senior Machine Learning Engineer - ML Training Infrastructure
General Motors
Sunnyvale, CA
…research and model development initiatives. As a Senior ML Engineer, you will collaborate closely with machine learning engineers, research scientists, and other partners to develop…
Added 20 mins ago
Sym3 Staff Hardware Engineer, Mechanical or Electrical
Applied Materials
Santa Clara, CA
Added 20 mins ago
Opto-Mechanical Engineer IV (E4)
Applied Materials
Santa Clara, CA
As a Mechanical Engineer, you’ll leverage your strong foundation in physics, mathematics, and materials science to process and resolve mechanical problems, design and implement custom…
Added 20 mins ago
Senior Systems Architect, Precision Stage V - (E5)
Applied Materials
Santa Clara, CA
As a Mechanical Engineer, you’ll leverage your strong foundation in physics, mathematics, and materials science to process and resolve mechanical problems, design and implement custom…
Added 20 mins ago
Manufacturing Equipment Engineer
Applied Materials
Santa Clara, CA
As a Manufacturing Engineer, you are responsible for developing and maintaining methods, operating sequences, and processes in the fabrication of parts, components, subassemblies, and final…
Added 20 mins ago
Sr Robotics Technical Support Engineer
J&J Family of Companies
Santa Clara, CA
Johnson & Johnson MedTech is recruiting for a Senior Robotics Technical Support Engineer within the Robotic Technical Support organization, located in the Eastern Timezone. Remote work may…
Added 20 mins ago
Robotics Technical Support Engineer II
J&J Family of Companies
Santa Clara, CA
Johnson & Johnson MedTech is recruiting for a Robotic Technical Support Engineer II within the Robotic Technical Support organization, located in the Eastern Timezone. Remote work may be…
Added 20 mins ago
Principal Software Engineer – Application Security & AI Trust Architecture
Cisco
San Jose, CA
The application window is expected to close on: 10/30/2026
Added 20 mins ago
Software Test Engineer
Deloitte
San Jose, CA
The professional will run on-site functional and regression testing in a lab to validate vendor-developed web application releases on specific hardware. Test Engineer will also certify each…
Added 20 mins ago
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EMC Test Engineer
TEKsystems
San Francisco, CA
- $60 to $80 USD / hour
…Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis…
Added 20 mins ago
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Principal Network Engineer
TEKsystems
San Francisco, CA
- $70 to $80 USD / hour
The Principle Network Engineer reports within the Professional Services (PS) team and is typically dedicated to a single customer. This role requires fluency in Juniper Networks…

Amazon

Software Development Engineer II, EFA Network - Annapurna Labs

Seattle, WA, United States

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Job details

Posting language: English
Posted: Oct 30, 2026

Original job description

Description

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 bandwidth and low latency. Provide expert-level support to some of the biggest names in AI in the world.

A day in the life

Start from the needs of your customer and invent new ways of cutting the occupancy of the software stack for EFA. Get your peers and stakeholders on board with excellent written designs. Write comprehensive tests to drive the development of new features and guard against regressions. Work with our ML Infrastructure team to see your products perform on 100s and 1000s of top-end machine clusters.

About the team

We are a fast-paced team that owns the user-space software stack for EFA. As part of Annapurna Labs in AWS we are very nimble, paying careful attention to what the AI industry is going to try next, and having our products ready. We focus heavily on automation, confining operations to the most interesting problems as customers continuously experiment with what our network can do. Our team is a place of growth, concentrating on your career and goals and motivating you to achieve your highest potential.

Basic Qualifications

3+ years of non-internship professional software development experience
2+ years of non-internship design or architecture (design patterns, reliability and scaling) of new and existing systems experience
3+ years of professional experience programming high-performance software in C, ideally as part of an Open Source project

Preferred Qualifications

3+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience
Bachelor's degree in computer science or equivalent
Experience developing in a network software stack, with a focus on cutting occupancy to the barest minimum number of instructions

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

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 https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at https://amazon.jobs/en/benefits .

USA, WA, Seattle - 143,700.00 - 194,400.00 USD annually

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Skills

Software development
AWS
C
Computer science
Recruitment
Mental health

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