AfterQuery
afterquery.com
Actively hiring
LLM & Generative AI
Foundation Models
Artificial Intelligence
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Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$30M
1 round on record
Latest round
$30M
Venture round · Apr 2026 · 6 mo ago
Team
201-500
employees, estimated range
Hiring now
30
+3 posted in 30 days
Backers
2
Y Combinator, BoxGroup
The money's age
Fresh money
6 months since the last round · and hiring
Momentum
39/100
hiring for its size, in the news, fresh money
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Apr 10
Raised a round Venture round $30M · Pulse 2.0
Jan 2025
Website went live first capture in the Wayback Machine
Jan 2025
Went through Y Combinator
Tractionpublic signals, read monthly
Web presence
top 3%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Apr 2026 | $30M | — | Pulse 2.0 |
Backed byfrom the funds' portfolios and accelerator catalogs
Y Combinator 
BoxGroup Investors in similar startupsfunds that back the companies most like this one
backs Pluralis Research
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How AfterQuery hires
Truth index
B 75/100
Ghost roles
0%
Stale roles
100%
Reposted roles
0%
AfterQuery scores B on the Alion truth index (A is best, E worst), measured over 12 open roles re-checked against its own hiring board: 0% look like ghost listings, 100% have gone stale and 0% are the same role posted again. 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
News
速递AI数据创企AfterQuery估值达32亿美元YC史上最快速度独角兽_腾讯新闻
图片来源：AfterQueryAfterQuery成为Y Combinator史上速度最快的独角兽企业估值现已达32亿美元据报道AI训练数据初创公司AfterQuery完成了一轮融资估值达到32亿美元而就在今年的4月该公司刚宣布以3亿美元估值完成3000万美元A轮融资这意味着不到半年时间估值增长超过10倍--据Y Combinator合伙人Gustaf Alströ...
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AI数据公司AfterQuery5个月估值翻10倍 刷新成长速度纪录_新闻频道_中华网
成立约 18 个月后人工智能训练数据公司 AfterQuery 成为了 Y Combinator 历史上成长最快的独角兽据福布斯报道该公司正在筹集新一轮融资估值达到 32 亿美元
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AfterQuery reportedly becomes Y Combinator's fastest-ever unicorn, now valued at $3.2B
AI model-training startup AfterQuery has reportedly raised a round that valued it at $3.2 billion, just five months after announcing its $30 million Series A at a $300 million valuation in April.
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AfterQuery reportedly becomes Y Combinator's fastest-ever unicorn, now valued at $3.2B
AI model-training startup AfterQuery has reportedly raised a round that valued it at $3.2 billion, just five months after announcing its $30 million Series A at a $300 million valuation in April.
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AI training data startup AfterQuery nabs $30M investment
AI training data startup AfterQuery nabs $30M investment - SiliconANGLE
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AfterQuery: $30 Million At $300 Million Valuation Raised For AI Data Solutions Platform
AfterQuery, an applied data solutions research lab focused on advancing artificial intelligence capabilities, announced that it has raised $30 million in a Series A funding round at a $300 million valuation.
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Tech stack
Technologies named in job postings at AfterQuery over the last 12 months, by layer, with the share of postings for each.
Technologies in use
42
Postings analysed
32
Stack modernity
76/100AI adopter
Languages
Python31%
JavaScript13%
Node JS6%
SQL6%
Frameworks & libraries
Next.js9%
React.js9%
JAX3%
PyTorch3%
Databases
ElasticSearch6%
Redis6%
Cloud & platforms
Anthropic97%
OpenAI97%
AWS16%
GCP16%
AI & ML
LLM19%
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Full AfterQuery tech stack
42 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$250k
Typical range
$96k – $450k
Open positions
29
21
Jobs
Intern
9.5%
Junior
23.8%
Middle
23.8%
Senior
4.8%
Staff
28.6%
Principal
4.8%
Architect
4.8%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Intern | 2 | $108k | $96k – $120k |
| Junior | 5 | $250k | $110k – $450k |
| Middle | 5 | $250k | $225k – $300k |
| Senior | 1 | $350k | $350k |
| Staff | 6 | $228k | $220k – $275k |
| Principal | 1 | $192k | $192k |
| Architect | 1 | $230k | $230k |
Highest paying role
Research Scientist - Post Training
$450k
Normalized to USD per year
All salaries at AfterQuery
By role, level and city, against the market · 29 jobs with pay
Growth
Hiring Momentum
36/100
Slowing
Open positions
30
2 opened / 1 closed in 30 days
Median time-to-fill
65 days
faster than 19% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
0%
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
26% ▲
Product
16%
Backend
11% ▼
Legal
11% ▼
Sales
11% ▼
Data Science
5% ▲
Activity Timeline
Added SQL to stack
Oct 2026
Added Machine Learning to stack
Sep 2026
Added Multimodal AI to stack
Sep 2026
Added Edge AI to stack
Sep 2026
Added Computer Use to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
San Francisco
San Francisco
United States
HQ
28 open roles 17 posted in 90 days 46% engineering 200-500 est. staff $268k Avg Salary
hires for AI/ML, Backend, Product
Jobs
≈ $144k – $262k per year (Estimated) • Remote (United States) • Full-Time • United States
Python
SQL
A/B Testing
Apply
Apply
$192k per year • In office • Full-Time • PhD • San Francisco
Reinforcement Learning
OpenAI
Anthropic
SFT
Post-training
Apply
$96k per year • In office • Internship • Master's Degree • San Francisco
Reinforcement Learning
Multimodal AI
AI Agents
NLP
OpenAI
Anthropic
Computer Use
Apply
$210k – $450k per year • In office • Full-Time • PhD • San Francisco
OpenAI
Anthropic
Machine Learning
Apply
$250k – $300k per year • In office • Full-Time • 3+ years exp • San Francisco
OpenAI
Anthropic
Apply
$210k – $450k per year • In office • Full-Time • 2+ years exp • San Francisco
LLM
OpenAI
Anthropic
SFT
Post-training
Machine Learning
Apply
$210k – $450k per year • In office • Full-Time • 2+ years exp • San Francisco
Python
Fine-tuning
JAX
PyTorch
LLM
Ray
OpenAI
Anthropic
SFT
Post-training
Machine Learning
DevOps
SLURM
Apply
$150k – $225k per year • In office • Full-Time • San Francisco
Python
OpenAI
Anthropic
Red Teaming
Apply
$150k – $225k per year • In office • Full-Time • 3+ years exp • San Francisco
OpenAI
Anthropic
Apply
$260k – $290k per year • In office • Full-Time • 3+ years exp • San Francisco
Reinforcement Learning
NLP
NER
Tokenization
Synthetic Data
OpenAI
Anthropic
Machine Learning
Cybersecurity
GDPR
HIPAA
Apply
$200k – $350k per year • In office • Full-Time • 2+ years exp • San Francisco
Python
TypeScript
OpenAI
Anthropic
Human-in-the-Loop
DevOps
GCP
AWS
IAM
Apply
Financials
Total raised
$30M
Latest round
Venture - Series Unknown
Funding rounds
1
Funding rounds
| Round | Announced | Amount | Valuation | |
|---|---|---|---|---|
| Venture - Series Unknown | 2026 | $30M | $300M | Details |