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Added 10 mins ago
Director, AI Engineer (Remote Eligible)
Capital One
Jefferson City, MO
Make high judgment build-vs-buy decisions across a broad stack of Open Source and SaaS AI technologies such as AWS Ultraclusters, Huggingface, VectorDBs, PyTorch, and more.
Added 10 mins ago
Senior Staff Full-stack Engineer - Global Payment Network (Remote - Eligible)
Capital One
Jefferson City, MO
As a Senior Staff Engineer at Capital One, you will be part of a community of technical experts working to define the future of banking in the cloud. You will work alongside our talented…
Added 20 mins ago
GA
Senior Software Engineer Containerized Applications TS/SCI
Geospatial And Cloud Analytics Inc
Qua, VA
- $170,000 to $190,000 USD / year
Support secure software development practices across full-stack environments, including relational and NoSQL databases, compiled and interpreted programming languages, and diverse operating…
Added 24 mins ago
Senior DevOps Engineer, Observability and FinOps
CACI International
Reston, VA
This engineer makes mission systems visible and their costs accountable, on networks that cannot call out to the internet. The role blends platform engineering (Kubernetes/OpenShift,…
Added 24 mins ago
Full-Stack Engineer 4 (Python, Java, AWS)
Capital One
McLean, VA
McLean, VA: $197,300 - $225,100 for Full-stack Engineer 4
Added 25 mins ago
Full-stack Engineer 4, Tech College Engineering
Capital One
Richmond, VA · McLean, VA
McLean, VA: $197,300 - $225,100 for Full-stack Engineer 4
Added 1 hour 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 1 hour ago
BA
Full Stack Developer, Mid
Booz Allen Hamilton
Aurora, CO
- $69,400 to $158,000 USD / year
Bring your full-stack engineering expertise to help modernize OPIR research and development. As a midlevel engineer, you'll build cloudnative microservices, develop scalable frontend…
Added 1 hour ago
BA
Full Stack Developer, Mid
Booz Allen Hamilton
Aurora, CO
- $69,400 to $158,000 USD / year
Bring your full-stack engineering expertise to help modernize OPIR research and development. As a midlevel engineer, you'll build cloudnative microservices, develop scalable frontend…
Added 1 hour ago
DA
Senior Software Development Engineer
Delta Air Lines, Inc.
Minneapolis, MN
- $81,300 to $221,000 USD / year
Write clean, efficient, and maintainable code and contribute to both front-end and back-end development as a full-stack engineer.
Added 1 hour ago
Staff Software Engineer
HENRY SCHEIN, INC.
SANDY, UT
…engineering teams build on top of * Develop modern, scalable full-stack solutions with integrated AI capabilities - primarily in Python across a range of frameworks, with growing use of…
Added 2 hours ago
Senior Software Development Engineer, IMDb Discovery Services
Amazon
Santa Monica, CA
…onboard through typed SDKs and versioned contracts. Our search stack is built on AWS OpenSearch Service, and relevance, latency, and scale are first-class engineering concerns. Every…
Added 2 hours ago
Software Engineer II - AI/ML, Neuron Inference, Neuron Inference
Amazon
Cupertino, CA
…performance for a wide range of ML models and model architectures on AWS's custom ML accelerators. We are working across the stack from PyTorch to the hardware-software boundary, our…
Added 3 hours ago
T
Aws Cloud Engineer
TEKsystems
Nashville, TN
- $60 to $65 USD / hour
The client is seeking a Cloud Engineer with a strong AWS foundation to help mature and govern its AWS environment while partnering closely with a small Enterprise Cloud Services team. While…
Added 3 hours ago
U
Sr Staff Engineer - Mobile and Edge Networking
Uber
Seattle, WA
- $267,000 to $297,000 USD / year
The Internet Traffic Team at Uber is responsible for managing Uber’s edge infrastructure stack that powers all of Uber’s internet presence, focusing on developer experience, observability,…
Added 3 hours ago
Software Development Engineer II, EFA Network - Annapurna Labs
Amazon
Seattle, WA
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…
Added 3 hours ago
Integration Engineer 5 - Payment Network Partner Experience
Capital One
Riverwoods, IL
Work within and across Agile teams to design, develop, test, implement and support technical solutions across a full stack of development tools and technologies
Added 3 hours ago
Senior Manager Data Engineer (Databricks, Pyspark, Snowflake)
Capital One
Chicago, IL
Lead high-performing Agile teams in designing, developing, testing, and supporting scalable data engineering solutions across full-stack and cloud platforms
Added 3 hours ago
Full-Stack Engineer 4 (SQL Server DBA)
Capital One
Riverwoods, IL · Chicago, IL
We are seeking Full-stack Software Engineers (SQL Server DBA) who are passionate about leveraging cutting-edge open source frameworks and emerging technologies. In this role, you’ll be at…
Added 4 hours ago
Senior Manager, Full-stack Engineer (People Leader)-EDT
Capital One
New York, NY
McLean, VA: $229,900 - $262,400 for Sr. Manager, Full-stack Engineer
Added 4 hours ago
Asset & Wealth Management Software Engineering Associate New York
Goldman Sachs & Company
NEW YORK, NY
…and leading-edge technology, data and design principals.As an engineer on the Client Solutions team, you will have the opportunity to work at the forefront of technological innovation…
Added 4 hours ago
Software Engineer
Mphasis Corporation
NEW YORK, NY
Added 8 hours ago
Director, AI Engineer (Remote Eligible)
Capital One
Dover, DE
Make high judgment build-vs-buy decisions across a broad stack of Open Source and SaaS AI technologies such as AWS Ultraclusters, Huggingface, VectorDBs, PyTorch, and more.
Added 9 hours ago
Principal Engineer & Technical Lead - Azure / Containers
Aperia
Dallas, TX
We are hiring a Principal Engineer and Technical Lead: a builder first, with deep architecture and enterprise design pattern experience behind every line of code. This person is the SVP of…
Added 9 hours ago
Senior Software Developer - Top SECRET - Fully ONSITE
VISUAL SOFT, INC
Huntsville, AL
…Top Secret clearance. The ideal candidate is a highly skilled full-stack engineer with deep experience in cloud-native architectures, DevSecOps, and secure software development…

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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