Jobs in the United States

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Added 12 mins ago
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Principal Core Infrastructure Engineer (Nashville, TN, relo provided)
Oracle
Nashville, TN
- $114,600 to $234,600 USD / year
Added 12 mins ago
O
Principal Core Infrastructure Engineer (Nashville, TN, relo assistance available)
Oracle
Nashville, TN
- $114,600 to $234,600 USD / year
Added 12 mins ago
O
Principal Network Engineer
Oracle
Seattle, WA
- $114,600 to $234,600 USD / year
Engineer segmentation (VRFs/security zones), ACLs/policies, encryption (IPsec/TLS), and DDoS/WAF integrations aligned to zero-trust.
Added 1 hour ago
Staff Software Engineer, WarehouseOS
HOJ INNOVATIONS, INC
Salt Lake City, UT
We are hiring our first Staff Software Engineer to lead WarehouseOS workstreams, from clarifying ambiguous problems through rollout and production follow-through.
Added 1 hour ago
A
Engineer Circuit Design 2
Actalent
Cincinnati, OH
- $62 to $70 USD / hour
…can engage with cutting-edge technologies and products. As a Principal PCB Layout Design Engineer, you will have the opportunity to support the design and delivery of high-reliability…
Added 2 hours ago
O
Principal AI Agent / Software Engineer- Nashville
Oracle
Nashville, TN
- $114,600 to $234,600 USD / year
The Principal AI Agent / Software Engineer is a Senior Staff-level, hands-on technical leadership role responsible for defining, building, and operating next-generation AI systems on Oracle…
Added 3 hours ago
J
QA/Test Engineer
Jobot
Gaithersburg, MD
- $150,000 to $175,000 USD / year
Opportunities across senior, lead, and principal-level QA engineering responsibilities.
Added 3 hours ago
Technical Recruiter
elly
Remote, United States
…growing client roster, from founding engineers to senior and principal talent. You’ll own each search from kickoff through close, partnering directly with founders and engineering leaders…
Added 3 hours ago
Senior Azure Infrastructure Engineer (Remote: US & Canada)
Cytel
Augusta, ME
We are seeking a highly skilled and experienced Senior Azure Engineer to join our cloud engineering team. This role is for a hands-on technical contributor who will design, implement,…
Added 3 hours ago
O
Principal Core Infrastructure Engineer
Oracle
Nashville, TN
- $114,600 to $234,600 USD / year
Added 3 hours ago
Principal / Sr Principal Computer Aided Design and Modeling Engineer (AHT)
Northrop Grumman
Colorado Springs
Northrop Grumman Space Systems is seeking a Principal / Sr Principal Computer Aided Design and Modeling Engineer to support radar system development programs in Colorado Springs, CO.
Added 3 hours ago
Principal AI Systems Performance Engineer
Micron Technology
Austin
JR116021 Principal AI Systems Performance Engineer
Added 4 hours ago
Staff/Principal AI Transformation Engineer
DiDi Labs
San Jose, CA · Mountain View, CA
We are seeking a visionary, highly technical, and mission-driven Staff or Principal AI Transformation Engineer to act as the ultimate catalyst for our company-wide AI transformation. In…
Added 5 hours ago
Principal Software Engineer
Pearson
Hoboken, NJ
We are modernizing Pearson's content platform into a set of shared platform services. You will be one of the principal engineers leading that work hands-on. You design the target systems…
Added 5 hours ago
WI
(USA) Principal, Software Engineer, Information Security
Walmart Inc.
United States
- $110,000 to $220,000 USD / year
The Principal Software Engineer, Information Security, leads the design and implementation of secure, scalable software solutions aligned with business objectives. This role requires…
Added 5 hours ago
WI
(USA) Principal, Software Engineer, Information Security
Walmart Inc.
United States
- $110,000 to $220,000 USD / year
As a Principal Software Engineer in Information Security, you will lead the design and implementation of secure, scalable software solutions that align with business objectives. This role…
Added 5 hours ago
WI
(USA) Principal, Software Engineer
Walmart Inc.
Bentonville, AR
- $110,000 to $220,000 USD / year
As a Principal Software Engineer, you will lead the design and delivery of scalable platform capabilities, driving the full software development lifecycle from coding to deployment and…
Added 5 hours ago
WI
Principal, Software Engineer - Fullstack
Walmart Inc.
United States
- $143,000 to $286,000 USD / year
As a Principal Engineer- fullstack, you will act as a hands-on technical leader and architect for the Marketplace Orders and Returns platform. This role requires deep technical expertise…
Added 5 hours ago
O
Principal AI Agent / Software Engineer- Nashville
Oracle
Concord, NH
- $114,600 to $234,600 USD / year
The Principal AI Agent / Software Engineer is a Senior Staff-level, hands-on technical leadership role responsible for defining, building, and operating next-generation AI systems on Oracle…
Added 5 hours ago
Principal Systems Engineer, Datacenter Interconnects and Fabric Health
NVIDIA USA
Remote, United States
We are seeking a highly skilled and experienced Principal Systems Engineer: Datacenter Interconnects & Fabric Health to join our team. This individual will play a critical role in root…
Added 5 hours ago
Principal Engineer - AV Simulation and Evaluation
NVIDIA USA
CA
We are seeking a Principal Software Engineer to architect and build core platform systems to accelerate Physical AI development, such as Autonomous Driving (AV) & Robotics. This is a…
Added 5 hours ago
Principal Forward-Deployed Engineer
Docusign
Remote, United States
As a Presales Principal Docusign FDE specializing in Procurement, you will work side by side with senior functional and technical client team members - including Procurement Executives,…
Added 5 hours ago
Principal Forward-Deployed Engineer
Docusign
Remote, United States
As a Presales Principal Docusign FDE specializing in Procurement, you will work side by side with senior functional and technical client team members - including Procurement Executives,…
Added 5 hours ago
Distinguished Hardware Engineer
Cisco Systems, Inc.
San Jose, CA
As a Distinguished Engineer, you will serve as a technical visionary and advisor to Cisco’s engineering business and senior management. You will lead and influence key industry boards,…
Added 5 hours ago
Principal Forward-Deployed Engineer
projects/helpful-passage-853/companies/9810ab3a-d8cd-4ba4-9ee5-ca421241fe3c
United States

Amazon.com Services LLC

Software Development Engineer III, Efficiency & Performance, Alloy, Region Flex Efficiency

Sunnyvale, CA, United States

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Job details

Posting language: English
Posted: Nov 2, 2026

Original job description

Amazon runs one of the world’s most complex eCommerce platforms, where operational efficiency directly drives profitability and customer satisfaction. Efficiency is core to Amazon’s DNA, reflected in the Leadership Principle of Frugality and the Flywheel strategy that lowers cost structures to fuel growth. With the cost of operating Amazon’s global infrastructure measured in billions of dollars, achieving true economies of scale rather than allowing scale to increase costs is essential to our success.

The Alloy team serves as Amazon’s central efficiency organization, leading company-wide cost optimization through intelligent and automated use of AWS resources. Our work spans thousands of internal services, enabling large-scale efficiency improvements with minimal engineering effort from partner teams. We drive optimization across multiple layers of Amazon’s stack, focusing on GPU efficiency infrastructure for AI/ML workloads through centralized scheduling, software performance profiling, and end-to-end storage optimizations through data lifecycle management. These cross-cutting initiatives transform isolated team optimizations into scalable, safe, and reusable systems that continuously improve efficiency across Amazon.

As a Software Development Engineer in Alloy, you will collaborate with service and infrastructure teams across Amazon to identify and eliminate performance bottlenecks in large-scale distributed systems. You will design and build mechanisms to measure, analyze, and automate performance improvements, using data to set and drive company-wide efficiency goals. You will work closely with Principal and Distinguished Engineers, gaining exposure to Amazon’s most advanced systems while developing deep technical expertise and leadership skills. Your work will directly influence how Amazon’s software and services operate at scale, delivering measurable cost savings in the tens to hundreds of millions of dollars each year and advancing Amazon’s commitment to operational excellence and sustainability.

In this role, you will:

Solve performance and efficiency problems that manifest at scale.
Design metrics and measure performance and cost efficiency of services in Amazon's ecosystem.
Collaborate with service teams to identify inefficiencies, and design and implement solutions.
Design and develop highly available components and profiling tools.

Key job responsibilities

Design and implement software solutions across the full development lifecycle - from product definition and scoping through coding, testing, deployment, and ongoing maintenance - ensuring high-quality, maintainable, and well-documented code.
Collaborate with customers, stakeholders, and cross-functional peers to understand business and customer needs, translating requirements into scalable system designs that account for performance, security, and extensibility tradeoffs.
Identify and resolve operational issues at their root cause, driving improvements to team operations and reducing support costs through proactive problem-solving and process enhancements.
Evaluate and integrate generative AI tools where appropriate to augment productivity and quality, applying responsible practices to refine outputs and accelerate development workflows.
Mentor and coach fellow engineers through code reviews and knowledge sharing, actively training new team members on system architecture, construction, and operational best practices.

About the team Our team is focused on building reliable, scalable software that directly impacts Amazon's customers. We value collaboration, clear communication, and a commitment to continuous improvement. Every engineer has a voice in technical decisions, and we encourage thoughtful debate to arrive at the best solutions. We are investing in new capabilities and looking for engineers who are excited to help shape our technical direction, grow their skills, and contribute to an inclusive environment where everyone can do their best work. Basic qualifications

5+ years of non-internship professional software development experience
5+ years of programming with at least one software programming language experience
5+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience
5+ years of highly scalable systems experience
Experience as a mentor, tech lead or leading an engineering team Preferred qualifications
5+ 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
Knowledge of system performance, memory management, and parallel computing principles

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

Los Angeles County applicants: Job duties for this position include: work safely and cooperatively with other employees, supervisors, and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees, supervisors, and staff to ensure exceptional customer service; and follow all federal, state, and local laws and Company policies. Criminal history may have a direct, adverse, and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness and professionalism, and safeguard business operations and the Company’s reputation. Pursuant to the Los Angeles County Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

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, CA, Sunnyvale - 193,300.00 - 261,500.00 USD annually

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