Jobs in the United States

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Construction Project Engineer
Actalent
Brownsville, TX
- $40 to $45 USD / hour
Job Title: Construction Project EngineerJob DescriptionThis role supports the construction and execution of utility-scale renewable energy projects, including Battery Energy Storage Systems…
Added 13 mins ago
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Intern, Material Process Engineer
L3Harris
Canoga Park, CA
- $25.5 to $48 USD / hour
Job Title: Intern, Material Process Engineering
Added 13 mins ago
SUPERVISOR
Space and Naval Warfare Systems Command
Point Loma Complex, CA
Added 13 mins ago
SUPERVISOR
Space and Naval Warfare Systems Command
Point Loma Complex, CA
Added 13 mins ago
SUPERVISOR
Space and Naval Warfare Systems Command
Point Loma Complex, CA
Added 14 mins ago
Cleared Senior/Principal R&D Electrical Engineer - W87-0/Sentinel Integration, Onsite
Sandia National Laboratories
Livermore, CA
We are seeking an experienced R&D Electrical Engineer to join our multidisciplinary teams performing critical work to maintain a safe and reliable national defense while advancing warhead…
Added 14 mins ago
Engineer I
General Atomics
Poway, CA
We have an exciting opportunit y for a 2nd shift Manufacturing Engineer to join our manufacturing team in Poway, CA.
Added 14 mins ago
Engineer II
General Atomics
Poway, CA
We have an exciting entry level career opportunity for a highly motivated Dynamics Engineer within our Airframe Integrity Group located in Poway, CA. This position will report to the…
Added 14 mins ago
Automation Control Engineer
Saint-Gobain
FREMONT, CA
The Automation Controls Engineer provides electrical, controls, and automation engineering support for our Fremont manufacturing operations. In this role, you will lead capital and expense…
Added 14 mins ago
Supervisory Healthcare Engineer (Deputy)
Veterans Affairs, Veterans Health Administration
Long Beach, CA
Added 14 mins ago
Digital Design Hardware Electrical Engineer II (Onsite)
RTX Corporation
el segundo, CA
Raytheon is seeking a highly motivated Digital Hardware Design Engineer to join our hardware engineering team. In this role, you will contribute to the design, development, verification,…
Added 14 mins ago
Antenna & Microwave Electrical Engineer I (Onsite)
RTX Corporation
el segundo, CA
Raytheon is seeking a Radio Frequency (RF) / Microwave Antenna Engineer within our Airborne Radar Electronics Design Hardware Engineering directorate. This role will be an on-site position…
Added 14 mins ago
RF/Microwave Antenna Electrical Engineer II (Onsite)
RTX Corporation
el segundo, CA
Raytheon is seeking a Radio Frequency (RF)/Microwave Antenna Engineer within our Airborne Radar Electronics Design Hardware Engineering directorate. This role will be an on-site position…
Added 14 mins ago
RF Electrical Engineer Intern (Summer 2027)(Onsite)
RTX Corporation
el segundo, CA
Contribute to electrical engineering project tasks as assigned
Added 14 mins ago
Digital Hardware Design Engineer (Onsite)
RTX Corporation
el segundo, CA
Raytheon is seeking a highly motivated Digital Hardware Design Engineer to join our Hardware Engineering team. In this role, you will contribute to the design, development, verification,…
Added 14 mins ago
RF/Microwave Electrical Engineer I - Production Support (Onsite)
RTX Corporation
el segundo, CA
Raytheon is seeing a Radio Frequency (RF) / Microwave Production Support Engineer within our Airborne Radar Electronics Design Hardware Engineering directorate. This role will be an on-site…
Added 14 mins ago
Production Engineer, Network AI Lead
Meta
Menlo Park, CA
Production Engineer, Network AI Lead Responsibilities:
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Proposal Specialist 3
Safran
Costa Mesa, CA
…products, requires a good technical background, financial and project management knowledge, along with excellent communication and organizational…
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HVAC Mobile Engineer
CBRE
Riverside, CA
- From $17 USD / hour
…candidates disclose any use of AI in the application and interview…
Added 14 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 15 mins ago
Electrical Test Engineer (Electrical Characterization)
Capgemini
Irvine, CA
Lead the execution of characterization testing plans according to project milestones
Added 15 mins ago
Process Mechanical Intern - Summer 2026
Jacobs
Redding, CA · Irvine, CA
This role is for a fulltime summer Process Mechanical Engineering Intern. As a summer intern you will assist other process mechanical engineers with various project tasks that may include…
Added 15 mins ago
Sym3 Staff Hardware Engineer, Mechanical or Electrical
Applied Materials
Santa Clara, CA
Impacts a range of customer, operational, project or service activities within own team and other related teams; works within broad guidelines and policies
Added 15 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 15 mins ago
Senior Mechatronics Engineer
J&J Family of Companies
Santa Clara, CA
The Senior Mechatronics Engineer will lead the design, development, integration, verification, and lifecycle support of complex systems and equipment in a regulated MedTech environment. The…

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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