Realm Labs
AI Evaluation & Observability · AI Safety & Alignment
5open roles
1backers · Crosspoint Capital Partners
5team · US Form 5500 (plan participants) · Dec 2025
Btruth index, 75 of 100
Overview
RealmGuard Technology Resources AI Failure Index Blog News Research Whitepaper Book Demo About Realm Labs was founded by AI researchers from three traditions that converged on the same problem: adversarial machine learning, AI safety and explainability, and large-scale systems and supply-chain security.
Key facts
As of Nov 13, 2026, Alion lists 5 open roles at Realm Labs. Realm Labs is headquartered in Sunnyvale, United States.
- Open roles
- 5Job postings Alion tracks, as of Nov 13, 2026
- Headquarters
- Sunnyvale, United StatesAlion company profile, updated Nov 13, 2026
- Employees
- 10+Alion company profile, an estimated range
- Visa sponsorship, United States
- 2 · H-1B filings in 12 monthsUS Department of Labor · latest filing Mar 16, 2026
- Technologies in its job postings
- 53Named in its job postings
How Realm Labs hires
Truth index
B 75/100
Ghost roles
0%
Stale roles
100%
Reposted roles
0%
Realm Labs scores B on the Alion truth index (A is best, E worst), measured over 3 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
Funding and backers
Team
5
US Form 5500 (plan participants) · Dec 2025
Hiring now
5
+1 posted in 30 days
Backers
1
Crosspoint Capital Partners
Momentum
8/100
hiring for its size
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
Oct 2024
Website went live first capture in the Wayback Machine
Tractionpublic signals, read monthly
Web presence
top 6%
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
Similar startupsby what they do, their industry and backers
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Jobs
In office · Internship · PhD · Sunnyvale
Python
Fine-tuning
Multimodal AI
NLP
PyTorch
LLM
Hugging Face
LLM Guardrails
Interpretability
Machine Learning
DevOps
GCP
AWS
Unix
Apply
≈ $49k – $70k per year (Estimated) · In office · Internship · Sunnyvale
Python
Fine-tuning
Multimodal AI
AI Agents
NLP
PyTorch
LLM
Hugging Face
Red Teaming
Interpretability
Multi-Agent Systems
Machine Learning
DevOps
GCP
AWS
Unix
Apply
$200k – $260k per year · In office · Full-Time · PhD · Sunnyvale
Python
LoRA
vLLM
Triton Inference Server
Fine-tuning
Multimodal AI
NLP
PEFT
Transformers
PyTorch
LLM
Anthropic
Hugging Face
Interpretability
DevOps
GCP
Git
AWS
Docker
Unix
Apply
$180k – $250k per year · In office · Full-Time · 5+ years exp · Sunnyvale
vLLM
Triton Inference Server
SGLang
TensorRT
TensorRT-LLM
Transformers
TensorFlow
PyTorch
LLM
CUDA
NCCL
KV Cache
DevOps
Kubernetes
Linux
Apply
Salary insights
Compensation ranges based on this company's open jobs
Median
$250k
Typical range
$140k – $260k
Open positions
3
2
Jobs
Senior
50%
Staff
50%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Senior | 1 | $250k | $250k |
| Staff | 1 | $140k | $140k |
Highest paying role
ML Research Engineer, Trust & Safety
$260k
Normalized to USD per year
Visa sponsorship
2
H-1B filings in 12 months
$153k
Median offered salary
5
Open roles in United States
Who they sponsor
Software developers
1
Industrial engineers
1
In the register as Realm Labs Inc., Sunnyvale, CA
Other sponsors in the same field
Themis AI 
Anthropic 
Centific
See 5 open roles Alert me
US Department of Labor · latest filing Mar 16, 2026 · Visa details by country
Growth
Hiring Momentum
22/100
Hiring freeze
Open positions
5
0 opened / 0 closed in 30 days
Median time-to-fill
102 days
faster than 11% of the market
ATS activity
Every ~6 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% ▲
Security
50% ▼
Tech stack
Technologies named in job postings at Realm Labs over the last 12 months, by layer, with the share of postings for each.
Technologies in use
53
Postings analysed
6
Stack modernity
90/100AI adopter
Languages
Python
C++
Go
Java
Frameworks & libraries
PyTorch
Transformers
SGLang
TensorFlow
Databases
MySQL
PostgreSQL
Redis
Cloud & platforms
AWS
GCP
Hugging Face
Unix
AI & ML
LLM
Claude
LoRA
PEFT
Sign in to see how your skills match this stack
Sign In
Full Realm Labs tech stack
53 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
Crosspoint Capital PartnersVia a fund
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
Shared investors
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
Sunnyvale
Sunnyvale
United States
HQ
4 open roles 2 posted in 90 days 100% engineering 10-50 est. staff $255k Avg Salary
hires for AI/ML, Security
How to cite this page
Alion, "Realm Labs: key facts", as of Nov 13, 2026. https://alion.io/company/realmlabs
These figures are published under a free licence. You may reuse them, including commercially, as long as you credit Alion and link back to this page. CC BY-SA 4.0