Jobs in the United States

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Added 2 mins ago
Application Engineer
SUMMIT CREDIT UNION
COTTAGE GROVE, WI
Added 2 mins ago
Tool and Fixture Design Engineer
PHILLIPS MEDISIZE HUDSON ST CROIX
HUDSON, WI
JOB REQUIREMENTS: Your Job Molex, LLC is seeking a Tool & Fixture Design Engineer to join our team in Hudson, WI. You may not see our name on the shelves, but our electronic solutions are…
Added 2 mins ago
EC
Test Engineer
Eaton Corporation
South Milwaukee, WI
- $71,000 to $105,000 USD / year
Eaton’s Power Reliability Division is currently seeking a Test Engineer to join our team. This position is based at our South Milwaukee, WI facility.
Added 2 mins ago
EC
Digital Factory Engineer
Eaton Corporation
South Milwaukee, WI
- $71,000 to $105,000 USD / year
Eaton’s Power Reliability Business Unit within the Power Systems Division is currently seeking a Digital Factory Engineer to join our team. This position is based at our South Milwaukee, WI…
Added 2 mins ago
Infrastructure Engineer I
EMERGENT HOLDINGS, INC.
NEW BERLIN, WI
Added 2 mins ago
Associate Reliability Engineer (Remote)
Kohl's
Menomonee Falls, WI
As an Associate Reliability Engineer, you will ensure the resilience and availability of Kohl’s systems and applications. You will drive incident response efforts, perform root cause…
Added 3 mins ago
Senior Design Engineer
Eaton Corporation
Waukesha, WI
Eaton’s ES AMER ESS division is currently seeking a Senior Design Engineer.
Added 3 mins ago
Software Engineer – Splunk Platform Authorization
Cisco
Appleton, WI
As a Software Engineer on the Splunk Platform Authorization team, you’ll build and maintain backend services that power secure, reliable access across complex enterprise environments.…
Added 3 mins ago
Senior Software Engineer – Splunk Platform Authorization
Cisco
Appleton, WI
As a Senior Software Engineer on the Splunk Platform Authorization team, you’ll help shape the architecture of systems that enable secure, high-performance authorization across Splunk’s…
Added 3 mins ago
Software Engineer, Systems ML
Meta
Madison, WI
Meta is seeking a principal-level Software Engineer to drive technical strategy and execution across our Systems ML Engineering organization. In this role, you will define the architectural…
Added 3 mins ago
AT
Principal Software Engineer - (Reston or Cambridge)
Akamai Technologies, Inc.
Madison, WI
- $169,300 to $304,700 USD / year
As a technical authority, you will drive engineering excellence through robust solution design. You will integrate Site Reliability Engineering principles to ensure web applications, APIs,…
Added 3 mins ago
Site Reliability Engineer
Highmark Health
Madison, WI
This job is responsible for the reliability, availability, and performance of critical healthcare IT systems, principally in the Environment of Care (EOC), enabling seamless access to…
Added 3 mins ago
JC
Site Reliability Engineer-FinOps Analyst
JOHNSON CONTROLS, INC.
MILWAUKEE, WI
- $95,219.8 USD / year
Added 9 mins ago
BA
AI/ML Engineer, Senior
Booz Allen Hamilton
Aurora, CO
- $99,000 to $225,000 USD / year
As a Senior AI/ML Engineer, you will design, build, and deploy advanced artificial intelligence and machine learning solutions that modernize mission systems and accelerate decisionmaking…
Added 10 mins ago
M
Principal Test Engineer
Microsoft
OR · TX · WA · CA · Hillsboro, OR · Austin, TX · Redmond, WA · Mountain View, CA · Hillsboro · Austin · Redmond · Mountain View
- $142,800 to $304,200 USD / year
We are looking for a Principal Test Engineer to join the team.
Added 19 mins ago
Biomedical Engineer
Veterans Affairs, Veterans Health Administration
Tulsa, OK
Added 19 mins ago
Biomedical Engineer
Veterans Affairs, Veterans Health Administration
Tulsa, OK
Summary The Eastern Oklahoma VA Health Care System seeks a Biomedical Engineer to support healthcare technology management. Responsibilities include assessing, acquiring, implementing,…
Added 19 mins ago
Site Reliability Engineer
Highmark Health
Oklahoma City, OK
This job is responsible for the reliability, availability, and performance of critical healthcare IT systems, principally in the Environment of Care (EOC), enabling seamless access to…
Added 20 mins ago
CAD Applications Specialist III (Plant 3D & Engineering Systems)
Dennis Group
Salt Lake City, UT
Champion continuous improvement initiatives that enhance efficiency, quality, and reliability.
Added 21 mins ago
M
Principal Hardware Engineer
Microsoft
CA · TX · OR · DC · San Diego, CA · Austin, TX · Hillsboro, OR · Mountain View, CA · Washington, DC · Aliso Viejo, CA · San Diego · Austin · Hillsboro · Mountain View · Washington · Aliso Viejo
- $142,800 to $304,200 USD / year
…(CQVE) team is responsible for ensuring storage device quality, reliability, and compliance before deployment at Azure…
Added 21 mins ago
M
Principal Software Engineer - CTJ - Poly
Microsoft
VA · Reston, VA · Reston
- $142,800 to $304,200 USD / year
Join the Azure AI Platform air-gapped engineering team as a Principal Software Engineer and help shape how Microsoft delivers and operates advanced AI capabilities for some of its most…
Added 21 mins ago
M
Principal Software Engineer
Microsoft
WA · Redmond, WA · Redmond
- $142,800 to $304,200 USD / year
We are looking for a Principal Software Engineer who lives and breathes Azure Cosmos DB and knows how it is implemented underneath. Your mission is to make throttling disappear from…
Added 21 mins ago
M
Senior Software Engineer
Microsoft
WA · Redmond, WA · Redmond
- $142,800 to $304,200 USD / year
…applications at enterprise scale. We are seeking a Senior Software Engineer to join the team and help design, build, and operate core platform capabilities that power Power Apps Code Apps…
Added 21 mins ago
M
Senior Azure Advanced Cloud Engineer
Microsoft
WA · GA · TX · NC · VA · CA · Redmond, WA · Atlanta, GA · Dallas, TX · Charlotte, NC · Reston, VA · Mountain View, CA · Redmond · Atlanta · Dallas · Charlotte · Reston · Mountain View
- $119,800 to $261,000 USD / year
…Operations (EngOps) team is committed to delivering the quality, reliability, and support experiences that turn customers of Microsoft Cloud into…
Added 27 mins ago
Principal Threat Detection Operations Engineer
Target
Brooklyn Park, MN
As a Principal Engineer supporting Threat Detection Operations, you set the technical strategy for the detection engineering, platforms, services, integrations, and automations that enable…

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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