Sigma
sigma.ai
AI Evaluation & Observability
AI Training Data & Annotation
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Visa sponsorship
3
H-1B filings in 12 months
1
Green card filings
$103k
Median offered salary
Who they sponsor
Accountants and auditors
2
Network and computer systems administrators
1
In the register as SIGMA Corporation, Cream Ridge, NJ (+1 more)
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micro1 
Hume 
Volga Partners 
Toloka AI
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US Department of Labor · latest filing May 28, 2026 · Visa details by country
Overview
Independent evaluation, high-fidelity data, and human intelligence for the teams building and deploying AI systems.
News
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I argued with the father of open source for 2 years.Now the AI fight is the same -only bigger
Two Sigma co-founder David Siegel says closing off AI is the same mistake the software industry nearly made in the 1980s - only with higher stakes.
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Integrity on Embedded Linux Devices under the Cyber Resilience Act
What the CRA integrity requirement means in practice for embedded Linux devices.
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KRM22 partners with Sigma AI to enhance market surveillance and risk intelligence capabilities
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TrustZone Intermezzo: Broken OP-TEE Memory Isolation on i.MX 8M
A commit enabling the TZASC on NXP i.MX 8M sent us down a rabbit hole: how a DDR memory alias bypasses Arm TrustZone and exposes OP-TEE
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Sigma 45mm f/2.8 Lens Repair & Analysis Salvaged Circuitry
I stumbled across a broken Sigma 45mm f/2.8 Art lens for a very cool $58.65 USD that I simply could not resist. I
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People
Lewis Gardner
Executive Officer, Director
Troy Duke
Executive Officer, Director
Ryan Holder
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Offices
Where the company hires and what each office is for
Cities
2
Hiring now
0
Countries
2
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Headquarters
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Bryant
United States
HQ
Burgos
Spain
Regional office
Avenida de Burgos, 114, First Floor, Madrid, 28050, ES
Financials
Total raised
$850k
Latest round
Venture - Series Unknown
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Venture - Series Unknown | 2016 | $850k | Details |