Judgment Labs
AI Agents · AI Evaluation & Observability
4open roles
$32Mlatest round · Seed · May 2026 · 5 mo ago
1backers · Lightspeed Venture Partners
50+team · employees, estimated range
Overview
Judgment Labs builds a continuous-improvement stack for AI agents that monitors agent behaviour at scale and uses interaction data to evaluate and improve it through learning and feedback. It hires applied AI engineers, backend and full-stack product engineers and a founding account executive. The company is headquartered in San Francisco, California, United States.
Funding and backers
Total raised
$32M
1 round on record
Latest round
$32M
Seed · May 2026 · 5 mo ago
Team
51-200
employees, estimated range
Hiring now
4
+1 posted in 30 days
Backers
1
Lightspeed Venture Partners
The money's age
Fresh money
5 months since the last round · and hiring
Momentum
30/100
hiring for its size, 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
Tractionpublic signals, read monthly
Web presence
top 2%
of 133.2M domains by links, Common Crawl
Hacker News stories
2
best: 3 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Seed | May 2026 | $32M | Lightspeed Venture Partners lead | Pulse 2.0 |
Backed byfrom the funds' portfolios and accelerator catalogs
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Claude Code
Reinforcement Learning
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Go
JavaScript
Temporal
Databases
Databricks
ClickHouse
RabbitMQ
Apache Kafka
AI/ML
Model Context Protocol
Dagster
Prefect
AI Agents
Flink
LLM
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Frontend
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React.js
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Visa sponsorship
1
H-1B filings in 12 months
$163k
Median offered salary
4
Open roles in United States
Who they sponsor
Software developers
1
In the register as Judgment, Inc t/a Judgment Labs, San Francisco, CA
Other sponsors in the same field
LangChain 
Confident AI 
Salesforce 
ServiceNow
See 4 open roles Alert me
US Department of Labor · latest filing Jun 15, 2026 · Visa details by country
Growth
Hiring Momentum
37/100
Slowing
Open positions
4
1 opened / 1 closed in 30 days
Median time-to-fill
182 days
faster than 6% of the market
ATS activity
Every ~5 hours
11/09/2026
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% ▼
DevOps
50% ▲
Activity Timeline
Added Machine Learning to stack
Sep 2026
Financials
Total raised
$32M
Latest round
Seed
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Seed | 2026 | $32M | Details |
Tech stack
Technologies named in job postings at Judgment Labs over the last 12 months, by layer, with the share of postings for each.
Technologies in use
23
Postings analysed
5
Stack modernity
77/100AI adopter
Languages
Go
JavaScript
Frameworks & libraries
Next.js
Temporal
Dagster
Flink
Databases
ClickHouse
Cloud & platforms
RabbitMQ
Apache Kafka
Databricks
Prefect
AI & ML
LLM
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Full Judgment Labs tech stack
23 technologies · by team · pay by technology · changes · similar stacks
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
Lightspeed Venture PartnersVia a fund
634 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
Agent Judge: Solving Long-Horizon Evals for Production Agents
Agent Judge evaluates long-horizon production agents by searching full trajectories, checking actions against the environment, and adapting rubrics from production feedback.
Read more
Report
Judgment Labs Closes $32 Million In Seed And Series A Funding To Build Improvement Layer For AI Agents
Judgment Labs has raised a combined $32 million across its seed and Series A rounds to accelerate its mission of helping AI-native teams turn production data into continuously improving agents. The funding was led by Lightspeed Venture Partners, which bac
Read more
Report
Climbing the Hills That Matter
How production trajectories, evals, user feedback, rubrics, and reward signals help teams improve AI agents after deployment.
Read more
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
4 open roles 2 posted in 90 days 100% engineering 50-200 est. staff
hires for AI/ML, Backend, DevOps