Jobs in the United States

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Added 5 mins 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 8 mins ago
Principal Engineer, Identity & Access Management (IAM) - Microsoft Entra ID
Boston Scientific
Arden Hills
Boston Scientific is seeking a Principal Engineer, Identity & Access Management (IAM), specializing in Microsoft Entra ID and cloud identity to provide enterprise-level technical leadership…
Added 8 mins ago
Principal Engineer, Identity & Access Management (IAM)
Boston Scientific
Arden Hills
Boston Scientific is seeking a Principal Engineer, Identity & Access Management (IAM), specializing in Microsoft Active Directory to provide enterprise-level technical leadership in the…
Added 8 mins ago
Sr. Principal Project Engineer; Turbo Jet (Onsite)
RTX
United States
The Sr. Principal Engineer, Lead Project Engineering will be responsible for overseeing and improving designs, manufacturing, and engine test processes for legacy and new production…
Added 14 mins ago
Manufacturing Engineer 2/3
DS - MP - ABL - Rocket Center
United States
The process engineer develops and oversees manufacturing processes based on design requirements. The candidate will develop and maintain detailed work instructions for assigned…
Added 14 mins ago
Sr. Principal Software Engineer
CORP-Corporate Office
United States
Northrop Grumman Defense Systems (NGDS), Beavercreek Ohio, is seeking a Sr Principal Software Engineer. The successful candidate will demonstrate a broad skill set balanced between…
Added 14 mins ago
Principal Engineer Software (AHT)
CORP-Corporate Office
United States
Northrop Grumman Defense Systems (NGDS), Beavercreek Ohio, is seeking a Full Stack Software Engineer. Successful candidates will demonstrate a broad skill set balanced between interpersonal…
Added 14 mins ago
Principal Engineer Software
CORP-Corporate Office
United States
The Principal Software Engineer will perform embedded software design, development, unit testing, and integration into embedded tactical platforms with low power and challenging…
Added 14 mins ago
Principal Engineer Electrical
SP - Launch Vehicles
United States
Northrop Grumman’s Space Sector is seeking a Principal Engineer Electrical - Level 3 to join our NH&S team in Chandler, AZ.
Added 14 mins ago
Sr. Principal Mechanical Engineer
CORP-Corporate Office
United States
Northrop Grumman Mission Systems is looking for you to join our team as a Sr. Principal Mechanical Engineer based in Sunnyvale, CA.
Added 14 mins ago
Noise Vibration and Harshness Engineer Level 2/3
CORP-Corporate Office
United States
Basic Qualifications for Principal Engineer Level 3:
Added 14 mins ago
Acoustic Analyst level 2/3
CORP-Corporate Office
United States
Basic Qualifications for Principal Engineer Level 3:
Added 14 mins ago
Engineer/Principal Engineer (Level 2/3)
CORP-Corporate Office
United States
…CA is looking for an experienced, hard-working, and reliable Engineer/Principal Engineer (Level 2/3) to join our diverse team. We support all areas and phases of air and space builds from…
Added 16 mins ago
Lead Software Engineer
Highmark Health
Remote, United States
The job is an integral member of an agile software engineer team responsible for building scalable software applications across all digital channels to serve our customers. The position…
Added 18 mins ago
IS
Engineering Supervisor
Internal Service Fund
Richland, WA
- $145,302 to $181,627 USD / year
Supervise and support our team with owner’s engineer oversight, construction, design reviews of new advanced reactor technologies, and progressive design/build contracts. The position is…
Added 22 mins ago
Principal Project Engineer - Electrical
Westinghouse Electric Company
New Stanton, PA
Added 22 mins ago
Principal Project Engineer - Electrical
Westinghouse Electric Company
New Stanton, PA
Added 22 mins ago
Senior Highway Design Engineer
CDR Maguire
Warrendale, PA
CDR Maguire Engineering, a multi-disciplinary engineering firm, has an immediate hiring need for a qualified Highway Design Engineer with minimum 5+ years of experience for our…
Added 22 mins ago
Senior Highway Design Engineer
CDR Maguire
Mechanicsburg, PA
CDR Maguire Engineering, a multi-disciplinary engineering firm, has an immediate hiring need for a qualified Highway Design Engineer with minimum 5+ years of experience for our…
Added 22 mins ago
Senior Highway Design Engineer
CDR Maguire
Allentown, PA
CDR Maguire Engineering, a multi-disciplinary engineering firm, has an immediate hiring need for a qualified Highway Design Engineer with minimum 5+ years of experience for our…
Added 23 mins ago
Supervisory Civil Engineer (Hydraulics)
U.S. Army Corps of Engineers
Pittsburgh, PA
Added 53 mins ago
Principal Human Factor Engineer - Neuro - Rice Creek, MN (Onsite)
MED Medtronic Inc
Fridley, MN
The Principal Human Factors Design Engineer will lead human factors and usability engineering efforts across assigned Interventional product programs. This individual contributor will apply…
Added 58 mins ago
SPECIAL ASSISTANT FOR EXECUTIVE ORDER IMPLEMENTATION
Nuclear Regulatory Commission
Rockville, MD
…all Executive Order-related activities. Serves as the EDO's principal advisor and personal representative regarding all aspects of overall planning, management, control, and coordination of…
Added 1 hour 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 1 hour ago
Principal Geotechnical Engineer/Business Unit Leader (Office Manager)
SOCOTEC
Tucson, AZ
We’re seeking an experienced Principal Geotechnical Engineer to lead our Tucson, Arizona office as Business Unit Leader (Office Manager) and Principal-in-Charge. This role combines…

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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