Mercor
mercor.com
Actively hiring
Recruiting & Staffing
Freelance & Talent Marketplaces
AI Training Data & Annotation
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Technologies
Salaries
Products
People
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Offices
Jobs
Financials
How Mercor hires
Truth index
A 92/100
Median time to fill
76 days
Ghost roles
0%
Stale roles
13%
Reposted roles
0%
Mercor scores A on the Alion truth index (A is best, E worst), measured over 16 open roles re-checked against its own hiring board: 0% look like ghost listings, 13% have gone stale and 0% are the same role posted again. Its roles close in a median of 76 days. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Overview
Mercor is an American company founded in 2023 by three Thiel Fellows that recruits and pays domain experts to produce the training and evaluation data frontier artificial intelligence labs need. Its business shifted quickly from general talent matching to expert data work: as models became competent at ordinary tasks, the scarce input became judgement from practising doctors, lawyers, bankers and engineers, and Mercor sources, vets and pays those people at very large scale. Headquartered in San Francisco and valued in the billions within two years of founding, it pays out enormous sums annually to a contributor network rather than employing them.
News
Can you apply for Mercor's AI evaluation without experience? Organizing what you need to prepareAI/生成AI/Gensparkパートナー/Ryuichi
When using ChatGPT or Genspark, you start to notice not only the convenience of the answers but also the weakness of the evidence and the awkwardness of the Japanese. There is potential to apply that verification skill to your work.The theme this time is
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Report
Can you receive Mercor payments via Wise? 7 things to check before applying海外事業 和田
Even if you are interested in working in a way that involves receiving compensation in foreign currency from overseas, you do not need to choose investing or starting a business from the beginning. There are ways to provide your knowledge to overseas proj
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Mercor acquires Deeptune to build AI training environments
Mercor's five million experts plus Deeptune's platform make it possible to build realistic training environments across more industries and roles.
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As Amazon lets Mechanical Turk fade, Mercor hits a $2 billion gross run rate
Mercor hit more than $2 billion in gross annualized revenue in June, The Information reported, as AI labs and enterprises buy expert data for model training.
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Mercor Data Breach: Investigation Findings and Updates
Official update on Mercor's March 2026 data breach: a LiteLLM supply chain attack, what our investigation found, who was affected, and security changes.
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Report
Mercor's Brendan Foody calls out Sequoia, accusing it of 'dual-pricing' valuation tricks
Sequoia is just one of the top firms that sells same equity at two different prices.
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Report
Mercor's CEO says it now spends more on AI tokens than employee salaries
"I would bet that in five years the average enterprise spends more on compute than headcount," Mercor's CEO Brendan Foody said.
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Report
New troubles at Mercor: Infighting, 'face time slavery,' and 'inhumane working conditions'
Former staffers offer a look inside the human data startup, where the hours are brutal, employees say they're getting stiffed, and the CEO is a 23-year-old billionaire who wants to be Elon Musk
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Tech stack
Technologies named in job postings at Mercor over the last 12 months, by layer, with the share of postings for each.
Technologies in use
107
Postings analysed
66
Stack modernity
85/100AI adopter
Languages
Python33%
SQL27%
Rust6%
TypeScript6%
Go5%
C++3%
C#2%
Java2%
Frameworks & libraries
Dagster2%
Haystack2%
JAX2%
Jetpack Compose2%
LiteLLM2%
PyTorch2%
React.js2%
SwiftUI2%
Databases
Snowflake8%
PostgreSQL6%
BigQuery3%
Google BigQuery3%
MySQL2%
ElasticSearch2%
Redis2%
Cloud & platforms
AWS11%
GCP8%
Azure6%
Okta6%
Kubernetes6%
Apache Kafka5%
Looker3%
Wiz3%
Developer tools
Cursor11%
Claude Code9%
Copilot9%
Terraform8%
dbt6%
Fivetran5%
OpenAI Codex3%
CloudFormation2%
AI & ML
LLM26%
Claude3%
ChatGPT2%
VLM2%
Practices & domains
AI Agents33%
Post-training20%
Machine Learning17%
Function Calling11%
Human-in-the-Loop9%
Tool Use9%
Synthetic Data9%
Incident Management6%
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Salary insights
Compensation ranges based on this company's open jobs
Median
$245k
Typical range
$130k – $500k
Open positions
78
61
Jobs
Intern
3.3%
Junior
18%
Middle
14.8%
Senior
26.2%
Staff
34.4%
Architect
3.3%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Intern | 2 | $150k | $140k – $160k |
| Junior | 11 | $220k | $130k – $300k |
| Middle | 9 | $180k | $130k – $225k |
| Senior | 16 | $290k | $180k – $500k |
| Staff | 21 | $400k | $180k – $500k |
| Architect | 2 | $240k | $230k – $250k |
Highest paying role
Data Scientist
$500k
Normalized to USD per year
All salaries at Mercor
By role, level and city, against the market · 78 jobs with pay
Products
Reinforcement Learning Environments
Task environments built so models can be trained against expert-defined outcomes. This is where the frontier labs' spending is moving, since static datasets have limited value once a model is already competent.
mercor.com
Contributor Network
The global pool of vetted professionals engaged on flexible project terms. Paying experts by the hour for part-time work reaches people who would never leave their profession for a full-time data role.
mercor.com
Talent Vetting
Automated interviewing and assessment used to verify a contributor's claimed expertise. Verification is the hard operational problem, because the entire value of the work collapses if unqualified people slip through.
mercor.com
Model Evaluation
Structured scoring and comparison of model outputs by qualified reviewers. Labs need this to know whether a new model is genuinely better, and only a domain expert can judge a specialist answer reliably.
mercor.com
Expert Data Generation
Paid projects in which practising professionals produce reference answers, reasoning traces and evaluations. Ordinary annotation is now largely solved, so what commands a premium is judgement from someone who actually does the job.
mercor.com
Growth
Hiring Momentum
69/100
Growing
Open positions
81
10 opened / 12 closed in 30 days
Median time-to-fill
71 days
faster than 19% of the market
ATS activity
Every ~4 hours
10/13/2026
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
AI/ML
22%
Backend
17% ▼
Product
12% ▼
HR
12% ▲
Operations
8% ▲
Sales
4%
Actively hiring for AI/ML (+4 in 30 days)
Activity Timeline
Added Service Desk to stack
Oct 2026
Added Notion to stack
Oct 2026
Added Haystack to stack
Sep 2026
Added gRPC to stack
Sep 2026
Added GraphQL to stack
Sep 2026
Added Dagster to stack
Sep 2026
Added Baseten to stack
Sep 2026
Added Physical AI to stack
Sep 2026
Added DNS to stack
Sep 2026
Added DLP to stack
Sep 2026
Added OWASP to stack
Sep 2026
Added Machine Learning to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
5
Hiring now
5
Countries
3
Busiest office
San Francisco
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Headquarters
Builds here
Office with open vacancies
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San Francisco
United States
HQ
82 open roles 56 posted in 90 days 51% engineering 5% remote 1000-5000 est. staff $337k Avg Salary
hires for Backend, AI/ML, Sales
181 Fremont St, San Francisco, CA, 94105, US
New York
United States
Engineering / R&D
18 open roles 14 posted in 90 days 67% engineering 11% remote 200-500 est. staff $376k Avg Salary
hires for Backend, AI/ML, Leadership
Fremont
United States
Engineering / R&D
9 open roles 10 posted in 90 days 22% engineering 200-500 est. staff $196k Avg Salary
hires for HR, Operations, AI/ML
London
United Kingdom
Regional office
3 open roles 3 posted in 90 days 67% engineering 33% remote 50-200 est. staff $197k Avg Salary
hires for AI/ML, Industrial Engineering
221 Pentonville Road,
Mexico City
Mexico
Regional office
3 open roles 3 posted in 90 days 67% engineering 33% remote 50-200 est. staff
hires for AI/ML, Industrial Engineering
Jobs
$190k – $230k per year • In office • Full-Time • 8+ years exp • Fremont
Post-training
Apply
$250k – $500k per year • Equity • In office • Full-Time • 8+ years exp • San Francisco
Copilot
Cursor
Claude Code
Dagster
AI Agents
Haystack
LLM
Baseten
Frontend
GraphQL
DevOps
Rest API
gRPC
Terraform
CI/CD
Apply
$130k – $500k per year • Equity • In office • Full-Time • San Francisco
Python
Go
Rust
Multimodal AI
Computer Vision
VLM
Physical AI
DevOps
GCP
AWS
Robotics
ROS
Foxglove Studio
Apply
≈ $205k – $451k per year (Estimated) • Remote (United States, United Kingdom) • Contractor • San Francisco • Mexico City • New York • London
Function Calling
AI Agents
Post-training
Tool Use
Apply
$250k – $500k per year • Equity • In office • Full-Time • San Francisco
Reinforcement Learning
Function Calling
AI Agents
Synthetic Data
GRPO
Post-training
Tool Use
Machine Learning
Apply
≈ $228k – $501k per year (Estimated) • In office • Contractor • San Francisco • Mexico City • New York • London
AI Agents
Human-in-the-Loop
Interpretability
Apply
$200k – $300k per year • Equity • In office • Full-Time • 4+ years exp • San Francisco
Apply
$160k – $500k per year • Equity • In office • Full-Time • San Francisco
Python
SQL
Snowflake
Apache Kafka
Analytics
Fivetran
Apply
$350k – $425k per year • Equity • In office • Full-Time • 7+ years exp • San Francisco
Python
SQL
LLM
EU AI Act
NIST AI RMF
ISO 42001
DevOps
SLI/SLO/SLA
IAM
Cybersecurity
ISO 27001
Wiz
PCI DSS
SOC 2
HIPAA
FedRAMP
Management
SharePoint
Apply
$300k – $420k per year • Equity • In office • Full-Time • 3+ years exp • Bachelor's Degree • New York
Multimodal AI
Computer Vision
Human-in-the-Loop
Apply
$160k – $500k per year • Equity • In office • Full-Time • San Francisco
Python
Go
PostgreSQL
DevOps
Terraform
CI/CD
AWS
Kubernetes
Apply
$190k – $230k per year • In office • Full-Time • San Francisco
Terraform
GCP
Vercel
Azure
AWS
Incident Management
IAM
Cybersecurity
Okta
Least Privilege
Apply