BioStack Platforms
AI Training Data & Annotation
1open role
3backers · Y Combinator, Multimodal Ventures
50+team · employees, estimated range
10technologies in use
Overview
Differentiated data that 10X-es AI. Get novel pre-clinical and medical datasets, perform causal inference, and generate data points for pre / post training.
Funding and backers
Team
51-200
employees, estimated range
Hiring now
2
+1 posted in 30 days
Backers
3
Y Combinator, Multimodal Ventures
Momentum
28/100
hiring for its size, in the news
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
Tractionpublic signals, read monthly
Web presence
top 7%
of 133.2M domains by links, Common Crawl
Backed byfrom the funds' portfolios and accelerator catalogs
Investors in similar startupsfunds that back the companies most like this one
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Jobs
$200k – $350k per year · Equity 0.1–1% · In office · Full-Time · San Francisco
RLHF
Reinforcement Learning
AI Agents
OpenAI
SFT
Post-training
LLM Evaluation
RLAIF
Reward Modeling
Apply
Salary insights
Compensation ranges based on this company's open jobs
Median
$275k
Typical range
$200k – $350k
Open positions
2
1
Jobs
Staff
100%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Staff | 1 | $200k | $200k |
Highest paying role
Founding Research Engineer, RL/Reasoning
$350k
Normalized to USD per year
Growth
Hiring Momentum
28/100
Slowing
Open positions
2
0 opened / 0 closed in 30 days
ATS activity
Every ~5 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
50% ▼
Biotech
50% ▲
Tech stack
Technologies named in job postings at BioStack Platforms over the last 12 months, by layer, with the share of postings for each.
Technologies in use
10
Postings analysed
2
Stack modernity
66/100
Cloud & platforms
OpenAI
Practices & domains
Post-training
Reinforcement Learning
AI Agents
LLM Evaluation
Machine Learning
RLAIF
RLHF
Reward Modeling
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Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
Multimodal VenturesVia a fund
Peak XV PartnersVia a fund
Y CombinatorVia a fund
6310 portfolio companies
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
News
Report
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
2 open roles 2 posted in 90 days 50% engineering 50-200 est. staff $275k Avg Salary
hires for AI/ML, Biotech