StartupBlink

143 Top startups in Carlsbad for August 2026

We rank Ezoic, Airspace and Arlo Technologies in Carlsbad along with 140 other startups based on an algorithm that scores startups based on total investment, employee count, and quarterly website traffic. Carlsbad is part of San Diego startup ecosystem which ranks #23 globally and #11 in North America.

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Best Startups in Carlsbad for 2026

1st
Ezoic logo
EzoicSB Score: 532

Ezoic is a server-side PaaS using machine learning that helps publishers make better decisions over time. By predicting how a website visitor will respond to an automated and individualized change, Ezoic boosts user experience metrics, and site speed and increases revenues from personalising each visit. Ezoic optimizes over 1.3BN user experiences each month (Sep 2022) and the system is offered as a self-serve ad-funded, subscription, or as an Enterprise (SaaS) solution.

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Website
www.ezoic.com
Employee range
101 – 250
Web Traffic (Monthly)
Funding amount
$38.6M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
2nd
Airspace logo
AirspaceSB Score: 529

Airspace was created in 2016 to solve the problems that plagued time-critical deliveries. After more than a decade in logistics, Nick Bulcao teamed up with Ryan Rusnak to build the industry’s most technologically advanced platform in order to expedite deliveries, improve accuracy, and provide full transparency for critical shipments. Headquartered in Carlsbad, California, Airspace has grown to over 200 members and counting. Their reach now extends overseas, where the Airspace B.V. office in Amsterdam supports their rapid international expansion. They serve a growing list of industries that rely on time-critical shipping, including healthcare, aerospace, and manufacturing. Airspace’s technology is revolutionizing the industry by automating a wildly outdated manual process. Proprietary algorithms and machine learning techniques provide instant quotes, optimized routing, and rapid driver dispatch. They are the only logistics company that pairs the most advanced technology with real-time communication on every shipment.

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Website
www.airspace.com
Employee range
251 – 500
Web Traffic (Monthly)
Funding amount
$136M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
3rd
Arlo Technologies logo
Arlo TechnologiesSB Score: 475

Arlo offers high-definition security cameras, smart doorbells, and lighting that can be easily connected to the internet. With options for HD and 4K resolution, Arlo's products provide top-notch surveillance for peace of mind.

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Website
www.arlo.com/en-us
Employee range
1 – 10
Web Traffic (Monthly)
Funding amount
$4.2M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
4th
Airspace Technologies logo

Airspace was created in 2016 to solve the problems that plagued time-critical deliveries. After more than a decade in logistics, Nick Bulcao teamed up with Ryan Rusnak to build the industry’s most technologically advanced platform in order to expedite deliveries, improve accuracy, and provide full transparency for critical shipments. Headquartered in Carlsbad, California, Airspace has grown to over 200 members and counting. Their reach now extends overseas, where the Airspace B.V. office in Amsterdam supports their rapid international expansion. They serve a growing list of industries that rely on time-critical shipping, including healthcare, aerospace, and manufacturing. Airspace’s technology is revolutionizing the industry by automating a wildly outdated manual process. Proprietary algorithms and machine learning techniques provide instant quotes, optimized routing, and rapid driver dispatch. They are the only logistics company that pairs the most advanced technology with real-time communication on every shipment.

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Website
www.airspacetechnologies.com
Employee range
251 – 500
Web Traffic (Monthly)
Funding amount
$136M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
5th
MaxLinear logo
MaxLinearSB Score: 465

MaxLinear is a provider of highly integrated, radio-frequency analog and mixed signal semiconductor solutions for broadband communications applications. Their high performance radio-frequency, or RF, receiver products capture and process digital and analog broadband signals to be decoded for various applications. These products include both RF receivers and RF receiver systems-on-chip, or SoCs, which incorporate their highly integrated radio system architecture and the functionality necessary to demodulate broadband signals.

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Website
www.maxlinear.com
Employee range
1,001 – 5,000
Web Traffic (Monthly)
Funding amount
$20M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
6th
Nalu Medical logo
Nalu MedicalSB Score: 451

Nalu Medical offers implantable neurostimulation systems that aim to reduce chronic nerve pain through spinal cord stimulation (SCS) and peripheral nerve stimulation (PNS). It provides a small, battery-free micro-implantable pulse generator (micro-IPG) plus leads, powered wirelessly via an external wearable “Therapy Disc,” enabling treatment without implanting a battery. The system includes software-based waveforms and is cleared by the U.S. FDA for both SCS and PNS indications. Therapy is managed through a smartphone app for patient control and system upgrades. Recent development includes a smaller version of the Therapy Disc to improve comfort and broaden applicability for patients needing peripheral nerve treatment.

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Website
nalumed.com
Employee range
101 – 250
Web Traffic (Monthly)
Funding amount
$250.9M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
7th
GLO Pharma logo
GLO PharmaSB Score: 425

Glo Pharma develops cutting-edge aesthetic skincare products. Currently operating in stealth mode, the company is revolutionizing the healthcare industry with innovative solutions for skincare.

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Website
www.ourself.com
Employee range
11 – 50
Web Traffic (Monthly)
Funding amount
$59.8M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
8th
SynergEyes logo
SynergEyesSB Score: 420

SynergEyes®, Inc. was founded in 2001 with a recognized need for a hybrid contact lens that combined the superior visual acuity of a rigid gas permeable lens with the comfort of a soft contact lens. The revolutionary SynergEyes® hybrid contact lens allows you to enjoy the best of both worlds - a stable, high oxygen permeable rigid center that delivers consistent, crisp, clear vision while the outer skirt gives you all the all-day comfort of a soft lens.

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Website
www.synergeyes.com
Employee range
251 – 500
Web Traffic (Monthly)
Funding amount
$51.8M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
9th
Acutus Medical logo
Acutus MedicalSB Score: 418

Acutus Medical develops medical technologies to treat complex cardiac arrhythmia. The company's platform displays the heart’s true activation pattern, turning the chaos of a complex arrhythmia into a clear vision for electrophysiologists. Acutus Medical is a privately funded company founded in 2011 and based in Carlsbad, California. Its products are co-developed in the U.S. and Europe with an exceptional team of medical scientists, biomedical engineers, and other professionals. It was founded in 2011 and headquartered in Carlsbad, California.

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Website
www.acutusmedical.com
Employee range
51 – 100
Web Traffic (Monthly)
Funding amount
$235.7M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
10th
Argonaut Manufacturing Services logo

Argonaut provides contract manufacturing for biopharmaceutical, diagnostics and life science organizations. The company's services include high-yield aseptic fill/finish, reagent formulation, filling, kitting, lyophilization, and analytical support. It provides a wide range of diagnostics and drug products for diverse outsourcing needs.

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Website
www.argonautms.com
Employee range
101 – 250
Web Traffic (Monthly)
Funding amount
$62.3M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
11th
The Venue Report logo
The Venue ReportSB Score: 399

Venue Report is a group focused marketplace that leads with a content strategy. As a B2B2C platform they help consumers find, communicate, and book venue spaces while simultaneously helping venues market, analyze and convert bookings of their spaces. Inspiring togetherness, promoting celebrations and highlighting exceptional spaces, places, and locales across the globe best for groups, their motto is "get out and gather".

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Website
www.venuereport.com
Employee range
11 – 50
Web Traffic (Monthly)
Funding amount
$3M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)

Total amount:83

Most Funded Startups in Carlsbad for 2026

The top three most funded startups in Carlsbad have raised total funding of more than USD 660M. Nalu Medical has 0.06% more funding than Acutus Medical.
1st
Nalu Medical logo
Nalu MedicalSB Score: 451

Nalu Medical offers implantable neurostimulation systems that aim to reduce chronic nerve pain through spinal cord stimulation (SCS) and peripheral nerve stimulation (PNS). It provides a small, battery-free micro-implantable pulse generator (micro-IPG) plus leads, powered wirelessly via an external wearable “Therapy Disc,” enabling treatment without implanting a battery. The system includes software-based waveforms and is cleared by the U.S. FDA for both SCS and PNS indications. Therapy is managed through a smartphone app for patient control and system upgrades. Recent development includes a smaller version of the Therapy Disc to improve comfort and broaden applicability for patients needing peripheral nerve treatment.

View Full Page
Website
nalumed.com
Employee range
101 – 250
Web Traffic (Monthly)
Funding amount
$250.9M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
2nd
Acutus Medical logo
Acutus MedicalSB Score: 418

Acutus Medical develops medical technologies to treat complex cardiac arrhythmia. The company's platform displays the heart’s true activation pattern, turning the chaos of a complex arrhythmia into a clear vision for electrophysiologists. Acutus Medical is a privately funded company founded in 2011 and based in Carlsbad, California. Its products are co-developed in the U.S. and Europe with an exceptional team of medical scientists, biomedical engineers, and other professionals. It was founded in 2011 and headquartered in Carlsbad, California.

View Full Page
Website
www.acutusmedical.com
Employee range
51 – 100
Web Traffic (Monthly)
Funding amount
$235.7M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
3rd
Ostendo Technologies logo

Ostendo Technologies develops solid-state lighting (SSL) based display technologies and products for commercial, consumer, and government markets. Ostendo Technologies was founded in 2005 and is based in Carlsbad, California.

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Website
ostendo.com
Employee range
51 – 100
Web Traffic (Monthly)
Funding amount
$173.3M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)

Total amount:83

Top Hiring Startups in Carlsbad by Employee Number

The top three hiring startups in Carlsbad have an median employee size that is between [1001-5000]
1st
MaxLinear logo
MaxLinearSB Score: 465

MaxLinear is a provider of highly integrated, radio-frequency analog and mixed signal semiconductor solutions for broadband communications applications. Their high performance radio-frequency, or RF, receiver products capture and process digital and analog broadband signals to be decoded for various applications. These products include both RF receivers and RF receiver systems-on-chip, or SoCs, which incorporate their highly integrated radio system architecture and the functionality necessary to demodulate broadband signals.

View Full Page
Website
www.maxlinear.com
Employee range
1,001 – 5,000
Web Traffic (Monthly)
Funding amount
$20M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
2nd
BeyondTrust logo
BeyondTrustSB Score: 315

BeyondTrust is the global identity security leader protecting Paths to Privilege™. Our identity-centric approach goes beyond securing privileges and access, empowering organizations with the most effective solution to manage the entire identity attack surface and neutralize threats, whether from external attacks or insiders. BeyondTrust is leading the charge in transforming identity security to prevent breaches and limit the blast radius of attacks, while creating a superior customer experience and operational efficiencies. We are trusted by 20,000 customers, including 75 of the Fortune 100, and our global ecosystem of partners. Learn more at www.beyondtrust.com.

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Website
www.beyondtrust.com
Employee range
1,001 – 5,000
Web Traffic (Monthly)
Funding amount
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
3rd
Airspace logo
AirspaceSB Score: 529

Airspace was created in 2016 to solve the problems that plagued time-critical deliveries. After more than a decade in logistics, Nick Bulcao teamed up with Ryan Rusnak to build the industry’s most technologically advanced platform in order to expedite deliveries, improve accuracy, and provide full transparency for critical shipments. Headquartered in Carlsbad, California, Airspace has grown to over 200 members and counting. Their reach now extends overseas, where the Airspace B.V. office in Amsterdam supports their rapid international expansion. They serve a growing list of industries that rely on time-critical shipping, including healthcare, aerospace, and manufacturing. Airspace’s technology is revolutionizing the industry by automating a wildly outdated manual process. Proprietary algorithms and machine learning techniques provide instant quotes, optimized routing, and rapid driver dispatch. They are the only logistics company that pairs the most advanced technology with real-time communication on every shipment.

View Full Page
Website
www.airspace.com
Employee range
251 – 500
Web Traffic (Monthly)
Funding amount
$136M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)
4th
Airspace Technologies logo

Airspace was created in 2016 to solve the problems that plagued time-critical deliveries. After more than a decade in logistics, Nick Bulcao teamed up with Ryan Rusnak to build the industry’s most technologically advanced platform in order to expedite deliveries, improve accuracy, and provide full transparency for critical shipments. Headquartered in Carlsbad, California, Airspace has grown to over 200 members and counting. Their reach now extends overseas, where the Airspace B.V. office in Amsterdam supports their rapid international expansion. They serve a growing list of industries that rely on time-critical shipping, including healthcare, aerospace, and manufacturing. Airspace’s technology is revolutionizing the industry by automating a wildly outdated manual process. Proprietary algorithms and machine learning techniques provide instant quotes, optimized routing, and rapid driver dispatch. They are the only logistics company that pairs the most advanced technology with real-time communication on every shipment.

View Full Page
Website
www.airspacetechnologies.com
Employee range
251 – 500
Web Traffic (Monthly)
Funding amount
$136M
National Rank(United States)
Regional Rank(North America)
Global Rank(Worldwide)

Total amount:143

Explore More Top Startups

Explore the Startup Ecosystem of Carlsbad

National Rank

(United States)

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Regional Rank

(North America)

11th

2

Global Rank

(WorldWide)

23rd

1

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Top Cities for Startups in United States - Ranked by StartupBlink

StartupBlink ranks the startup ecosystems of more than 100 countries and 1,000 cities. Download our latest Global Startup Ecosystem Report.
2026 National Rank CityGlobal RankTotal Score & National ShareAnnual Growth

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