Jobs in the United States

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Added 1 min ago
Data Engineer
IQ Sig
Alexandria, VA
The Data Engineer serves as the principal technical authority and hands-on builder for enterprise data architecture, pipelines, and data platform capabilities across classified and…
Added 10 mins ago
Principal Security Engineer
Crux AI
Palo Alto, CA
Crux AI is a newly formed, U.S.-based integrated AI infrastructure company created to remove the physical and operational constraints on consequential AI ambitions. Crux brings together…
Added 10 mins ago
Principal AI Ops Engineer
Crux AI
Palo Alto, CA
Crux AI is a newly formed, U.S.-based integrated AI infrastructure company created to remove the physical and operational constraints on consequential AI ambitions. Crux brings together…
Added 20 mins ago
Transportation Project Engineer
Stantec
Colorado Springs, CO · Denver, CO · Fort Collins, CO
Utilize model-based design visualization software, such as InfraWorks, LumenRT, Concept Station, or Beyond Typicals, to support design development and client communications. Identify and…
Added 29 mins ago
Thermal Analysis Engineer III
Axiom Space
United States
Axiom Space is a human space exploration company, building era-defining space infrastructure and delivering technology-driven solutions that will empower civilization to transcend Earth.…
Added 52 mins ago
Distinguished Hardware Engineer
Cisco
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 1 hour ago
Principal Software Engineer
DQQ Cohesity Inc.
Santa Clara, CA
We are looking for an exceptional Principal Engineer (L8) to lead the architecture and development of next-generation cloud-native services and platform infrastructure powering large-scale…
Added 1 hour ago
Software Development Engineer II, Efficiency & Performance, Alloy, Region Flex Efficiency
Amazon.com Services LLC
Sunnyvale, CA
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…
Added 1 hour ago
Software Development Engineer III, Efficiency & Performance, Alloy, Region Flex Efficiency
Amazon.com Services LLC
Sunnyvale, CA
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…
Added 1 hour ago
O
Senior Core Infrastructure Engineer
Oracle
Santa Clara, CA · Seattle, WA · Austin, TX · Nashville, TN
- $79,200 to $209,500 USD / year
As a Senior Software Development Engineer in the Oracle Cloud Infrastructure (OCI) Security Platform division, you will help build and operate OCI’s Key Management Service (KMS), a…
Added 1 hour ago
FU
Cybersecurity Architect
FMS USA Fresenius Mgmt Services Inc
Remote, United States
- $137,000 to $229,000 USD / year
Ability to work in a group development environment as an application security engineer across software engineer, QA engineer and build/test/release engineer teams.
Added 1 hour ago
Principal Platform Software Engineer (Onsite)
RTX
United States
Raytheon has an opportunity for a Principal Platform Software Engineer with well-rounded Infrastructure Platform Engineering expertise to join an agile product team. The Ideal candidate…
Added 2 hours ago
Principal Engineer Software, AIKG - Exploration (Chronosphere)
Palo Alto Networks, Inc.
United States
Directly impact how customers leverage observability for their infrastructure and services architecture
Added 2 hours ago
Principal Site Reliability Engineer
HITACHI ENERGY USA INC
Raleigh, NC · Atlanta, GA · Houston, TX · Broomfield, CO
Hitachi Energy is seeking a Principal Site Reliability Engineer to ensure the secure, reliable, and efficient operation of cloud‑hosted environments that support ESS software products and…
Added 2 hours ago
MS
Principal SIEM Engineer - Vice President
Morgan Stanley
Baltimore, MD · Baltimore
- $140,000 to $195,000 USD / year
…quantitative trading systems, cutting-edge modelling and simulation software, comprehensive risk and security systems, and robust client-relationship capabilities, plus the worldwide…
Added 2 hours ago
Lead Principal Application Software Engineer
Oracle
United States
Software Development and Coding - Design, Testing, and Optimization:
Added 2 hours ago
Principal Cloud Data Architect (Microsoft Fabric and Azure)
Children's Health
Dallas, TX
The Principal Cloud Solution Data Architect designs, develops, and implements scalable, secure, and high performance data solutions, integrating source systems, data stores, interfaces, and…
Added 2 hours ago
Staff Software Engineer
RealWork
Austin, TX
We're looking for a Staff Software Engineer to join our small but growing engineering team. The ideal candidate will have demonstrable expertise in product development, data engineering,…
Added 2 hours ago
Principal ScienceLogic Skylar 1/SL1 Engineer
Global Enterprise Services, LLC
Fort Meade, MD
GES is seeking a Principal ScienceLogic Skylar 1/SL1 Engineer to design, deploy, configure, and transition to operations an enterprise ScienceLogic SL1 monitoring solution supporting a…
Added 2 hours ago
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Lead Full Stack Security (Systems & Software) Engineering (GRC)
Salesforce, Inc.
WA
- $172,500 to $260,100 USD / year
10 to 12+ years of professional full stack software and systems engineering experience, including 3+ years in a Lead, Staff, or Principal Engineer capacity leading technical projects and…
Added 3 hours ago
Principal Electrical Controls Engineer – Data Center Infrastructure
Jabil Inc.
Austin, TX
We are seeking a highly experienced and innovative Principal Controls Engineer to lead the development, optimization and implementation of advanced control systems across critical…
Added 3 hours ago
Principal Technical Integrator Engineer
STR
Las Vegas, NV
STR is seeking a Principal Technical Integration Test Engineer to join a new group focused on the complex test and evaluation challenges that exist in the modern world. You will help build…
Added 3 hours ago
Operational Security Analyst
STR
Las Vegas, NV
STR is seeking a Principal Technical Integration Test Engineer to join a new group focused on the complex test and evaluation challenges that exist in the modern world. You will help build…
Added 3 hours ago
J
Principal Systems Engineer
Jobot
Gaithersburg, MD
- $140,000 to $175,000 USD / year
Software Developer – Senior, Lead & Principal Levels
Added 3 hours ago
Sr. Security & Fraud Engineer
Topgolf Payroll Services
United States
Partner with software development, infrastructure engineering, and compliance teams to ensure new feature releases maintain a secure risk posture and feed telemetry correctly into…

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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