S3 Ventures

Angel Networks & Startup Accelerators · Venture Capital
1open role
$44Mraised by its portfolio in 12 months
9open roles in its portfolio
Growinghiring pace, 70 of 100

Overview

S3 Ventures is an Austin venture capital firm that invests in early-stage technology companies across the United States. It backs founders in business software, digital health and consumer technology, typically at the Series A stage, and supports them with operating resources. The firm was founded in 2005 and describes itself as the largest and longest-serving venture capital firm born in Texas.

Program

Accelerator
Investments
6
6 of them startups
Hiring now
3
9 open roles
Deals in 12 months
2
2 as the lead
Rounds in 12 months
3
$44M raised
Focusshare of its companies
Artificial Intelligence 40%Information Technology 20%Sales & Marketing 20%Software 20%Education 20%Financial Services 20%Professional Services 20%
Where its companies are
United States 50%
Stage of its companies
Pre-seed & seed 100%
Its companies, the freshest money firstAll 6 investments
ArpioSeries A $15M · 5 mo ago · led a round · 1 role AvtalSeries A $24M · 7 mo ago · led a round OpineVenture round $5M · 10 mo ago · led a round · 6 roles SuntheticsSeed $4M · 18 mo ago MavvrikSeed $6.2M · 20 mo ago · led a round · 2 roles
9 open roles at 3 of its companies
Similar investorstheir companies share markets and countries
New Markets Venture Partners Ascend.vc Cofounders Capital Bonfire Ventures Madrona Venture Group Elevate Ventures Fika Ventures Camden Partners
Sources: 6 rounds in the press that name it

Jobs

In office · Contractor · Toronto
GCP
Life Sciences
Good Clinical Practice
MedTech
21 CFR Part 11
Apply

Growth

Hiring Momentum
70/100
Growing
Open positions
1
1 opened / 2 closed in 30 days
Median time-to-fill
16 days
faster than 64% of the market
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.
QA
43% ▲
Finance
14% ▼
Legal
14% ▲
Public Policy
14% ▲
Biotech
14% ▲
Activity Timeline
New location: Toronto Nov 2026
Added Good Clinical Practice to stack Nov 2026
Added 21 CFR Part 11 to stack Nov 2026
Added FMEA to stack Oct 2026
Added Design History File to stack Oct 2026
Added GMP to stack Oct 2026
Added Verification & Validation to stack Oct 2026
Added ISO 14971 to stack Oct 2026
Added ISO 13485 to stack Oct 2026
Added Design Controls to stack Oct 2026
Added 21 CFR Part 820 to stack Oct 2026
Added CAPA to stack Oct 2026

Tech stack

Technologies named in job postings at S3 Ventures over the last 12 months, by layer, with the share of postings for each.
Technologies in use
11
Postings analysed
3
Stack modernity
56/100
Cloud & platforms
GCP
Practices & domains
CAPA
21 CFR Part 11
Design Controls
Design History File
FMEA
Good Clinical Practice
Verification & Validation
EU MDR
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Offices

Where the company hires and what each office is for
Cities
3
Hiring now
2
Countries
2
Busiest office
Santa Clara
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Headquarters Builds here Office with open vacancies No open vacancies right now Tap a pin for the office
Austin United States
HQ
Santa Clara United States
Regional office
3 open roles 4 posted in 90 days 67% engineering $117k Avg Salary
hires for QA, Industrial Engineering
seen since Mar 2025 job postings
Toronto Canada
1 open roles 1 posted in 90 days
hires for Biotech
seen since Nov 2026 job postings
Earlier presence
Cleveland, United States 1 open roles · last posting Nov 2026