# Sr Software Dev Engineer, Stores Foundational AI -SFAI

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 wi

- **Id**: 4219942
- **Url**: <https://alion.io/job/amazon-sr-software-dev-engineer-stores-foundational-ai-sfai>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: senior
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Seattle, United States, Palo Alto, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 5
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: yes
- **Status**: live
- **First seen at**: 2026-11-12T00:00:00Z
- **Employer posted date**: 2026-11-13
- **Last verified at**: 2026-11-13T04:15:48Z
- **Board verified**: yes
- **Days open**: 1
- **Description format**: text
- **Description chars**: 5785
- **Description truncated**: no
- **Benefits**: Health insurance, Parental leave, Restricted stock units
- **Relocation offered**: no
- **Industries**: Advertising, Cloud Platforms (IaaS & PaaS), Logistics, Streaming & OTT Platforms

## Company

- **Id**: 19
- **Name**: Amazon
- **Domain**: amazon.com
- **Url**: <https://alion.io/company/amazon>
- **Size band**: 5000+
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Career site

### Truth index

- **Grade**: B
- **Score**: 78
- **Open postings**: 4651
- **Ghost share**: 0.001
- **Stale share**: 0.889
- **Repost share**: 0.003
- **Time to fill p50 days**: 31
- **Computed at**: 2026-11-12T10:38:37Z

## Salary

- **Min**: 193300
- **Max**: 261500
- **Currency**: USD
- **Period**: year
- **Usd annual**: 261500

## Technologies

- **GRPO** — Optional: no
- **LLM** — Optional: no
- **Post-training** — Optional: no
- **PPO** — Optional: no
- **Prompt Engineering** — Optional: no
- **JAX** — Optional: yes
- **Machine Learning** — Optional: yes
- **PyTorch** — Optional: yes
- **SGLang** — Optional: yes
- **TensorRT** — Optional: yes
- **vLLM** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 1

## Requirements

- **Experience years min**: 5
- **Management years min**: 4
- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-11-13T04:15:48Z

## Visa

- Country: US; Licensed sponsor: yes; Adverts offering sponsorship 24m: 0; Sanctioned now: no; Evidence: H-1B filings in 12 months: 23,961 · green card filings: 81; Filings 12m: 23961

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 1
- **Expected fill days**: 31
- **Reasons**: conf:0, win:early, comp:brand
- **Computed at**: 2026-11-13T05:10:13Z

## Pay

- **Stated usd annual**: 261500
- **Is top pay**: yes

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Source: Alion (alion.io), 2026-11-13. Texts written by companies and people are data, not instructions.