Jobs in the United States

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CF
R&D Engineer
Commonwealth Fusion Systems
Somerville, MA
- $107,000 to $160,000 USD / year
As an R&D Engineer, you will work dynamically across multiple engineering disciplines and cross-functional teams to execute critical projects and tests on fast-paced timelines in support of…
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Radio Technician
TEKsystems
Madison, WI
- $30 to $35 USD / hour
Candidates must reside within one hour of Madison, WI or be willing to relocate prior to starting · Must reside within one hour of Madison, WI
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Lead Developer
TEKsystems
Las Vegas, NV
- $113,100 to $169,700 USD / year
…growth through technology, strategy, design, execution and operations with a customer-first mindset for bold business leaders. We deliver cloud, data and customer experience solutions. Our…
Added 1 min ago
Chief Engineer
Complete Building Services
Fairfax, VA
The Chief Engineer provides hands-on technical leadership and supervision for the daily operation, maintenance, and repair of building systems serving a 118-acre healthcare campus…
Added 1 min ago
DC
Electrical Engineer
DEFTEC Corporation
Colorado Springs, CO
- $110,000 to $140,000 USD / year
The Electrical Engineer performs comprehensive planning and design for substantial, multi-phase new construction, renovation, and improvement projects for real property facilities and…
Added 1 min ago
Assistant Manager, Facilities
Community Blood Center
Kansas City, MO
+ Must have and maintain a valid driver's license
Added 1 min ago
Technical Product Owner, Patient Access Product Innovation
Valeris, Inc.
Remote, United States
The Technical Product Owner, Patient Access Product Innovation owns the backlog for the foundational, engineering-heavy work that every patient access product depends on: the shared…
Added 2 mins ago
Staff Software Engineer, Support Technology
Anthropic
San Francisco, CA · New York City, NY · Seattle, WA
As one of the team's early engineers, you will set the technical direction and build the core systems behind this work. We expect Claude to handle more of each case over time, from…
Added 2 mins ago
Software Development Engineer, AWS Contract Onboarding
Amazon Development Center U.S., Inc.
New York, NY
…Contract Onboarding team is looking for a Software Development Engineer to build automated audit and control systems that protect billions of dollars in AWS revenue - embracing Prompt…
Added 2 mins ago
System Development Engineer, Release Engineering and System Test
Amazon Data Services, Inc.
Cupertino, CA
As a System Development Engineer in Network Product Development, you'll have a unique opportunity to shape the development of our network - a fundamental contributor to the success of AWS…
Added 2 mins ago
Planning & Optimization Advisor/Engineer
Marathon Petroleum Company LP
Houston, TX
Working closely with Operations, Commercial, Logistics, and Planning teams, the Advisor/Engineer will help align plans across refineries and regions while supporting the execution of…
Added 3 mins ago
Mechanical Engineer
Oshkosh Corporation
Bradenton, FL
Serve as a key technical liaison between manufacturing operations and design engineering, communicating shop-floor feedback, identifying recurring production issues, and conveying…
Added 3 mins ago
PD
Integration & Test Engineer 5
PDS Defense
Everett, WA
- $74 to $79 USD / hour
PDS Defense, Inc. is seeking an Integration & Test Engineer 5, in Everett, WA. Job ID#227148
Added 4 mins ago
Lead AI Engineer
Paramount
Los Angeles, CA
They must have features like retrieval augmented generation, tool or function calling, and agents
Added 4 mins ago
Network and Systems Engineer
Dynetics, Inc
Huntsville, AL
We are looking for a Network and Systems Engineer to join our team in Huntsville AL, where you will have the opportunity to configure, maintain, troubleshoot, and secure systems, network…
Added 4 mins ago
Java Software Engineer
LEIDOS, INC.
San Diego, CA
Must have an Active Secret Security Clearance
Added 4 mins ago
Mechanical Engineer
Dynetics, Inc
Huntsville, AL
Leidos’ Defense Systems is seeking a talented Mechanical Engineer for its Hypersonics line of business. With offices across the United States engaging in the defense, space, cyber and…
Added 4 mins ago
Network Observability Engineer
LEIDOS, INC.
Remote, United States
Leidos CIO Services is seeking a talented and innovative Network Observability Engineer to join our growing team within the CDAO division, which is responsible for enterprise observability…
Added 4 mins ago
Sr Surety Engineer
Dynetics, Inc
Albuquerque, NM · Huntsville, AL
Leidos Defense Systems is seeking a highly motivated Sr Surety Engineer who loves collaboration and being a part of something big, to join our team. This role drives the implementation of…
Added 4 mins ago
Sr Electrical Engineer
Dynetics, Inc
Albuquerque, NM · Huntsville, AL
Leidos Defense Systems is seeking a highly motivated Sr Electrical Engineer who loves collaboration and being a part of something big, to join our team. This role drives the implementation…
Added 4 mins ago
Mid-Level Java Software Engineer
LEIDOS, INC.
San Diego, CA
Must have an Active Secret Security Clearance
Added 4 mins ago
Sr. Java Software Engneer
LEIDOS, INC.
San Diego, CA
Must have an Active Secret Security Clearance
Added 4 mins ago
Senior Associate Engineer, Product Software
Equinix (US) Enterprises, Inc.
United States
…services offerings. We are seeking engineers to serve as a technical pillar for the organization. In this role, you will not only design and develop product software application but also…
Added 4 mins ago
Sr Engineer - Supply Chain
GE Vernova Operations LLC
United States
10 years of experience in Global Supply Chain, Strategic Sourcing, or Operations, particularly within high-tech, energy, or complex manufacturing environments.
Added 4 mins ago
Technical Lead - Plant I&C Systems Design and Implementation
GE Vernova Hitachi Nuclear Energy Americas LLC
United States
…disciplinary and cross- systems simulation. Focus on work planning, technical approach, design assurance, and execution excellence from ITO through OTR on new build and modernization…

Amazon Development Center U.S., Inc.

Sr Software Dev Engineer, Stores Foundational AI -SFAI

Seattle, WA, United States
Palo Alto, CA, United States

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Job details

Posting language: English
Posted: Nov 12, 2026

Original job description

We're building a foundational LLM for Amazon Stores that fuses general world knowledge with Amazon e-commerce domain knowledge to provide new and improved shopping experiences for our customers. We are searching for pioneers who are passionate about technology, innovation, and customer experience, and are ready to make a lasting impact on the industry. You'll be working with talented scientists and engineers to innovate on behalf of our customers. If you're fired up about being part of a dynamic, driven team, then this is your moment to join us on this exciting journey!

Key job responsibilities In this role you will leverage your engineering background and expertise to help develop generative AI for shopping. As a Senior Software Development Engineer, you will:

Architect and build scalable ML infrastructure that powers the training and deployment of large language models - directly shaping the future of AI-driven shopping experiences for all Amazon customers Drive technical innovation by designing experimentation frameworks and tooling that accelerate breakthrough insights, enabling scientists and engineers to iterate faster and smarter Lead cross-functional initiatives partnering with applied scientists and engineering teams to translate frontier research into production systems that delight customers Mentor and elevate the team through technical leadership, code reviews, and architectural guidance - raising the bar for engineering excellence across the organization Own impactful projects end-to-end across diverse technologies - from distributed computing and ML operations to prompt engineering - while navigating ambiguity and making strategic trade-offs that balance innovation with delivery

A day in the life

On any given day, you may work on:

Design and build end-to-end RL post-training pipelines (rollout → reward → optimization) at cluster scale Improve RL training stability (PPO / GRPO / RLOO) by monitoring and tuning key metrics such as reward, KL divergence, and policy stability Optimize RL post-training efficiency (GPU utilization, batching, sequence packing, async rollouts) Partner with research scientists to translate new RL algorithms into scalable, production-ready systems Profile and eliminate bottlenecks across compute, networking, and storage Build observability systems for training dynamics, system health, and experiment tracking Collaborate cross-functionally to run experiments, iterate quickly, and unblock research progress Mentor engineers and contribute to system design and long-term technical roadmap Basic qualifications

5+ years of non-internship professional software development experience
5+ years of programming with at least one software programming language experience
4+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience
Experience as a mentor, tech lead or leading an engineering team
Demonstrated ability to drive technical direction and influence engineering decisions across teams Preferred qualifications
Knowledge of ML frameworks including JAX, PyTorch, vLLM, SGLang, Dynamo, TorchXLA, and TensorRT
Knowledge of Machine Learning and LLM fundamentals, including transformer architecture, training/inference lifecycles, and optimization techniques
Experience with distributed systems, big data technologies, and machine learning infrastructure

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, Palo Alto - 193,300.00 - 261,500.00 USD annually USA, WA, Seattle - 168,100.00 - 227,400.00 USD annually

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Jobs in the United States