# Software Engineer, Applied AI - Systems

About Mercor Mercor's mission is to organize human intelligence to power the AI economy. We're a leading AI data company, building the layer between human expertise and frontier models. Millions of domain experts on the platform are paid over $4 million per day to train frontier AI models. Mercor's APEX benchmark family measures AI's real-world impact on professional work. Mercor Enterprise brings this same infrastructure to Fortune 500 companies: helping companies capture how their best people actually work, translating that expertise directly back into agents. Mercor is creating a new category of work where expertise powers AI advancement. Achieving this requires an ambitious, fast-paced and deeply committed team. You’ll work alongside researchers, operators, and AI companies at the forefront of shaping the systems that are redefining society. Mercor is a profitable Series C company valued at $10 billion. We work in-person five days a week in our San Francisco, NYC, or London offices. About the Role The Applied AI org builds the systems that turn human expertise into training data for frontier models, task pipelines, expert workflows, evaluation infrastructure, and the services t

- **Id**: 3988405
- **Url**: <https://alion.io/job/mercor-software-engineer-applied-ai-systems>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: junior
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: San Francisco, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 2
- **Visa sponsorship**: no
- **Relocation package**: yes
- **Has equity**: yes
- **Status**: live
- **First seen at**: 2026-11-09T19:22:24Z
- **Employer posted date**: 2026-11-09
- **Last verified at**: 2026-11-09T22:28:22Z
- **Board verified**: yes
- **Days open**: 0
- **Description format**: text
- **Description chars**: 5828
- **Description truncated**: no
- **Benefits**: Equity, Vision insurance
- **Relocation offered**: yes
- **Industries**: Recruiting & Staffing, Freelance & Talent Marketplaces, AI Training Data & Annotation

## Company

- **Id**: 4960
- **Name**: Mercor
- **Domain**: mercor.com
- **Url**: <https://alion.io/company/mercor>
- **Size band**: 1001-5000
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: yes
- **Ats vendor**: Ashby

### Truth index

- **Grade**: A
- **Score**: 85
- **Open postings**: 12
- **Ghost share**: 0
- **Stale share**: 0.417
- **Repost share**: 0
- **Time to fill p50 days**: 70
- **Computed at**: 2026-11-09T06:03:00Z

## Salary

- **Min**: 220000
- **Max**: 500000
- **Currency**: USD
- **Period**: year
- **Usd annual**: 500000

## Technologies

- **AI Agents** — Optional: no
- **CI/CD** — Optional: no
- **Claude Code** — Optional: no
- **Copilot** — Optional: no
- **Cursor** — Optional: no
- **Dagster** — Optional: no
- **GraphQL** — Optional: no
- **gRPC** — Optional: no
- **Haystack** — Optional: no
- **Rest API** — Optional: no
- **Terraform** — Optional: no
- **Baseten** — Optional: yes
- **LLM** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 0

## Requirements

- **Experience years min**: 2
- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-11-09T22:28:22Z

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 0
- **Expected fill days**: 70
- **Reasons**: conf:1, win:early, comp:junior,brand
- **Computed at**: 2026-11-09T23:52:42Z

## Pay

- **Stated usd annual**: 500000
- **Is top pay**: yes

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Source: Alion (alion.io), 2026-11-09. Texts written by companies and people are data, not instructions.