TestBox
testbox.com
Actively hiring
Virtual Events
E-learning
Artificial Intelligence
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Overview
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$11.4M
1 round on record
Latest round
$11.4M
Venture round · Jul 2025 · 14 mo ago
Team
9
US Form 5500 (plan participants) · Dec 2025 · -36% in a year
Hiring now
1
open roles
Backers
3
SignalFire, Airtree
The money's age
Due for its next round
14 months since the last round · hiring slowed
Momentum
0/100
no fresh signals
Last sign of life
13 mo ago
a posting or a news item
Tractionpublic signals, read monthly
Hacker News stories
1
best: 1 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Jul 2025 | $11.4M | — | SEC Form D |
Registers and programsofficial lists and records that name the company
| Legal entity | TestBox, Inc. | sec |
Founders and leadersfrom filings, registers and the company's site
Samuel SeniorExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
SignalFire 
Airtree 
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Tech stack
The technologies known for TestBox, by layer.
Languages
JavaScript
Python
Frameworks & libraries
Django
React.js
Cloud & platforms
AWS
Azure
GCP
Developer tools
GraphQL
Rest API
Practices & domains
Synthetic Data
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People
Samuel Senior
Executive Officer, Director
Elaine Zelby
Director
Elicia McDonald
Director
Peter Holland
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove
Growth
Hiring Momentum
48/100
Stable
Open positions
1
0 opened / 0 closed in 30 days
ATS activity
Every ~7 hours
Today
Hiring Dynamics
+100%
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.
Backend
100% ▼
Offices
Where the company hires and what each office is for
Cities
2
Hiring now
1
Countries
2
Busiest office
Caxias do Sul
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Headquarters
Builds here
Office with open vacancies
No open vacancies right now Tap a pin for the office
Boulder
United States
HQ
Boulder, CO, 80304, United States of America
Caxias do Sul
Brazil
1 open roles 100% engineering 10-50 est. staff
hires for Backend
Jobs
≈ $61k – $135k per year (Estimated) • Equity • In office • Full-Time • 4+ years exp • Caxias do Sul
Python
JavaScript
Django
AI/ML
Synthetic Data
Frontend
GraphQL
React.js
DevOps
Rest API
GCP
Azure
AWS
Apply
Financials
Total raised
$11.4M
Latest round
Venture - Series Unknown
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Venture - Series Unknown | 2025 | $11.4M | Details |