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Added 41 mins ago
2027 Summer Internship: Design Engineer- Air Systems Development
PACCAR
Denton, TX
…currently enrolled in college. This opening is for a Mechanical Engineer Intern to add to our Air Systems Development team in Denton,…
Added 48 mins ago
Principal Engineer
BAE Systems
Norfolk, VA
BAE Systems is hiring for a Principal Engineer to support primarily at its Norfolk, Virginia site. The position will occasionally provide support in San Diego, CA, and Jacksonville, FL. In…
Added 54 mins 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 1 hour ago
J
QA/Test Engineer
Jobot
Gaithersburg, MD
- $150,000 to $175,000 USD / year
Support a Mission-Critical FAA Aviation Program | Help Modernize Cloud-Native Systems Through Advanced Test Automation & AI-Driven Testing!
Added 1 hour ago
2027 Summer Internship: Design Engineer - Powertrain - Aftertreatment Development (SG 15)
PACCAR
Denton, TX
…information technology, and distributes truck parts related to its principal…
Added 1 hour 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 1 hour ago
O
Principal Core Infrastructure Engineer
Oracle
Nashville, TN
- $114,600 to $234,600 USD / year
Leads development and begins architecting components of scalable, elastic distributed systems. Defines and enforces scalability requirements for owned components; optimizes code and data…
Added 1 hour ago
Principal / Sr. Principal Software Engineer - Onsite Customer Integration
Northrop Grumman
Melbourne
Northrop Grumman Aeronautics Systems Sector has an opening for a Principal / Sr. Principal Software Engineer - Onsite Customer Integration to join Global Surveillance Division supporting…
Added 1 hour ago
Senior Principal Mechanical Systems Engineer
Northrop Grumman
Annapolis
The Naval & Oceanic Systems business unit headquartered in Annapolis, MD is seeking dependable individuals willing to work in a collaborative environment and that are interested in…
Added 1 hour ago
Principal/Sr. Principal Structural Engineer
Northrop Grumman
Annapolis
The Naval & Oceanic Systems business unit headquartered in Annapolis, MD is seeking dependable individuals willing to work in a collaborative environment and that are interested in…
Added 1 hour ago
Principal Engineer Software
Northrop Grumman
Orlando
Northrop Grumman Defense Systems has an opening for a Principal Software Engineer. We are looking for you to join our team as a Principal Software Engineer based out of Orlando, FL. As a…
Added 1 hour ago
Principal Engineer/Sr. Principal Engineer Digital-RF Subsystems I&T Lead
Northrop Grumman
Baltimore
This is a Dual-level opening, candidates will be considered at both a level 3 (Principal Engineer) or 4 (Sr. Principal Engineer) based upon the Basic Qualifications listed below.
Added 1 hour ago
Principal Program Operations Engineer
Northrop Grumman
Chantilly
Northrop Grumman Aeronautics Systems (NGAS) is looking for a Principal Operations Engineer to join our team in Chantilly, VA.
Added 1 hour ago
Manufacturing Engineer 2/3
Northrop Grumman
Rocket Center
We are currently seeking talented individuals for a manufacturing engineer positions at the Rocket Center, WV location just outside of Cumberland MD. The Allegany Ballistics Laboratory…
Added 1 hour ago
Principal Engineer Software (AHT)
Northrop Grumman
Wright-Patterson AFB
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 1 hour ago
Sr. Principal Software Engineer
Northrop Grumman
Beavercreek
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 1 hour ago
Sr. Principal Mechanical Drafting Design Engineer
Northrop Grumman
Rolling Meadows
Northrop Grumman Corporation is offering a challenging and rewarding career as a Sr. Principal Mechanical Drafting Designer within the Mission Systems Sector located at the Rolling Meadows…
Added 1 hour ago
Principal/Sr. Principal FPGA Engineer
Northrop Grumman
Rolling Meadows
As a Principal / Sr. Principal FPGA Design Engineer, you will join a diverse, high-performing team responsible for the end-to-end development of advanced RF and EO/IR products. You will…
Added 1 hour ago
Acoustic Analyst level 2/3
Northrop Grumman
Sunnyvale
Basic Qualifications for Principal Engineer Level 3:
Added 1 hour ago
Sr. Principal Mechanical Engineer
Northrop Grumman
Sunnyvale
Northrop Grumman Mission Systems is looking for you to join our team as a Sr. Principal Mechanical Engineer based in Sunnyvale, CA.
Added 1 hour ago
Noise Vibration and Harshness Engineer Level 2/3
Northrop Grumman
Sunnyvale
Northrop Grumman Mission Systems is seeking an Noise Vibration and Harshness Engineer Level 2/3 with thermodynamics, heat transfer and fluid flow knowledge for the development and ongoing…
Added 1 hour ago
Engineer/Principal Engineer (Level 2/3)
Northrop Grumman
Redondo Beach
…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 1 hour ago
Principal Guidance Navigation Control Engineer - 20430*
Northrop Grumman
Manhattan Beach
Northrop Grumman Defense Systems is seeking Principal Guidance Navigation Control Engineer - 20430. This position will be located in Manhattan Beach, CA and will support GSSC.
Added 1 hour ago
Sr Principal Engineer Software
Northrop Grumman
Melbourne · El Segundo
Northrop Grumman Aeronautics Systems has an opening for a Sr Principal Software Engineer position to join our team of qualified, diverse individuals for a hybrid position in Melbourne,…
Added 1 hour ago
Software Engineer/Principal Software Engineer - Java
Northrop Grumman
San Diego
Northrop Grumman Aeronautics Systems is looking to add a Software Engineer - Java or Principal Software Engineer - Java to join our team on site in Rancho Bernardo, CA

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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