Jobs in the United States

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Added 13 mins ago
Electrical Engineer II - RF/Microwave Design (Onsite)
RTX Corporation
goleta, CA
…has an immediate opening for a highly motivated Electrical Engineer II – RF/Microwave Design to work on Electronic Warfare (EW) and general electronics product development for defense…
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
RF/Microwave Antenna Electrical Engineer II (Onsite)
RTX Corporation
el segundo, CA
The RF/Microwave Antenna Engineer will be responsible for participating in the development of state-of-the-art circulators, radiators, filters, and passive components.
Added 14 mins ago
Software Engineer II - AI/ML, Neuron Inference, Neuron Inference
Amazon
Cupertino, CA
…scale and directly impacts millions of customers? As a Software Development Engineer II at Amazon, you will design, build, and maintain systems that solve complex problems while delivering…
Added 15 mins ago
Healthcare Engineer
Veterans Affairs, Veterans Health Administration
Los Angeles, CA
Added 30 mins ago
ES
Product Engineer II - Utility Solutions
Environmental Systems Research Institute Inc.
Louisville, CO
- $79,664 to $133,120 USD / year
…investment in location-based data and technology. As the Product Engineer II - Utilities, you will collaborate with customers, industry teams, and other product development team members to…
Added 1 hour ago
Software Development Engineer II, Engagement and Growth Tech
Amazon
Seattle, WA
…for the features that keep them coming back. As a Software Development Engineer II on this team, you will build both frontend and backend features that drive how users discover, follow, and…
Added 1 hour ago
Software Development Engineer II, EFA Network - Annapurna Labs
Amazon
Seattle, WA
…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…
Added 1 hour ago
Process Engineer, Carbon Capture - Kiewit Power Engineering
Kiewit
Lenexa, KS
Kiewit Power Engineering (KPE) has an immediate opening for a Senior Process Engineer in our Carbon Capture market group based in Lenexa, KS, USA. The Carbon Capture market is an exciting…
Added 2 hours ago
Systems Engineer, Senior
BOOZ, ALLEN & HAMILTON, INC.
Rome, NY
As a systems engineer on our team, you'll have the chance to shape the DoD by supporting aerospace engineering teams. Your customer will t rus t you to not only design and develop these…
Added 2 hours ago
Biomedical Equipment Support Specialist (Information Systems)
Veterans Affairs, Veterans Health Administration
Aurora, CO
…definitions for applicable networked medical devices. Leads development of disaster recovery procedures for critical systems to be enacted in the event of device failure. Adheres to MDIA…
Added 3 hours ago
Project Manager II - Transmission Focus
Duke Energy
Plainfield, IN
…find a friendly work environment, opportunities for growth and development, recognition for your work, and competitive pay and…
Added 3 hours ago
NDT/NDE Engineer
Rolls-Royce
Indianapolis, IN
The NDT Engineer will develop, define, and control, NDT processes and procedures. The position may support internal production, development, suppliers, or customers.
Added 3 hours ago
Research & Development Engineer Scientist II
Honeywell Technologies
Chickasaw, AL
A challenging opportunity is now available for a Engineer/Scientist II in the Manufacturing and Product Technology (MPT) group of UOP R&D. The MPT group is accountable for the development…
Added 4 hours ago
Engineer I-III (SCADA Engineer)
TXNM Energy
Albuquerque, NM
The position will be filled at the Engineer I, II, or III level based on the selected candidate¿s qualifications and experience. Assignments, independence, and technical responsibility will…
Added 4 hours ago
Engineer I-III (OMS Analyst)
TXNM Energy
Albuquerque, NM
The position will be filled at the Engineer I, II, or III level based on the selected candidate¿s qualifications and experience. Assignments, independence, and technical responsibility will…
Added 4 hours ago
Engineer I/II
City of Santa Maria
Santa Maria, CA
The City of Santa Maria is recruiting one Engineer I/II in the Water Resources Division of the Utilities Department. Spring 2026 college graduates who will earn a Bachelor’s Degree in Civil…
Added 5 hours ago
C
Software QA Engineer II (Full Time) - United States
Cisco
Richardson, TX · San Jose, CA · Milpitas, CA
- Full-time
As a QA / Automation Engineer, you will contribute to validating Cisco’s wireless platforms by writing test plans, developing automation, and analyzing system behavior. You will gain…
Added 5 hours ago
FinOps Cloud Engineer | Active Secret clearance
GD Information Technology, Inc.
Remote, United States
Transform technology into opportunity as a FinOps Cloud Engineer at GDIT. Shape what’s next for mission-critical government projects while shaping what’s next for your engineering career.
Added 5 hours ago
Cybersecurity Information Security Assessor
GD Information Technology, Inc.
United States
Experience as a security engineer or systems engineer supporting DoW or DISA programs, including hands‑on work with production systems.
Added 5 hours ago
Circuit Activation Engineer - TS/SCI clearance
GD Information Technology, Inc.
United States
We’re seeking a Circuit Activation Engineer to design, deploy, and support secure, high‑performance network solutions that keep our mission moving. If you enjoy solving complex technical…
Added 5 hours ago
Circuit Activation Engineer - TS/SCI clearance
GD Information Technology, Inc.
United States
We’re seeking a Circuit Activation Engineer to design, deploy, and support secure, high‑performance network solutions that keep our mission moving. If you enjoy solving complex technical…
Added 7 hours ago
Software Development Engineer II, Lightsail
Amazon.com Services LLC
Seattle, WA
…the complexity of traditional infrastructure. As a Software Development Engineer II on the Lightsail team, you will build features and services that simplify compute, storage, networking,…
Added 7 hours ago
Product Analyst
Hays
Denver, CO
…reliability/mobile backhaul projects ranging from new product development to lifecycle management of already deployed…
Added 8 hours ago
PN
Software Engineer II
Pacific Northwest National Laboratory
Richland, WA · Seattle, WA
- $109,000 USD / year
We are seeking a motivated Software Engineer to join our dynamic team at PNNL and contribute to cutting-edge projects that shape the future of critical technology supporting national…

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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