Tamtam Start free

The 100 largest venture-backed startups in the United States

Tamtam tracks 232 venture-backed startups headquartered in the United States. This list ranks the 100 largest by number of employees on LinkedIn, led by PayPal, SpaceX and Stripe. Their median headcount is 2,357. Half of them were founded in 2012 or later. The most common headquarters are San Francisco (27), New York (14) and Boston (7).

馃嚭馃嚫 United States100 companiesUpdated Oct 9, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
PayPalpaypal.com

Enables fast, easy, enjoyable money movement for individuals and businesses globally, unlocking opportunities and empowering everyday financial interactions for millions.

Software Development 馃嚭馃嚫 San Jose 38,343 1998
2
SpaceXspacex.com

A company specializing in designing, manufacturing, and launching advanced rockets and spacecraft with a goal of making life multiplanetary

Aviation and Aerospace Component Manufacturing 馃嚭馃嚫 Hawthorne 20,008 2002
3
Stripestripe.com

Financial infrastructure platform enabling businesses to accept payments, increase revenue, and explore new opportunities to grow in San Francisco and Dublin

Technology, Information and Internet 馃嚭馃嚫 South San Francisco 16,031 2010
4
Databricksdatabricks.com

It provides a Data Intelligence Platform for organizations to manage their data effectively and leverage AI for better decision-making.

Software Development 馃嚭馃嚫 San Francisco 15,896 n/a
5
Qualtricsqualtrics.com

Innovative software company dedicated to creating exceptional experiences for brands, high-performing teams, and beloved products through Experience Management

Software Development 馃嚭馃嚫 Provo 15,119 2002
6
Pinterestpinterest.com

It is a visual inspiration platform with 482 million monthly active users, helping people search, save, and shop ideas.

Software Development 馃嚭馃嚫 San Francisco 13,766 2010
7
Remoteremote.com

Comprehensive HR and payroll platform enabling companies to hire, manage, and pay employees worldwide with compliance and local expertise.

Human Resources Services 馃嚭馃嚫 San Francisco 12,042 2019
8
[24]7.ai247.ai

This company provides customer engagement solutions using conversational AI to create personalized, predictive, and effortless customer experiences across all channels

Software Development 馃嚭馃嚫 Campbell 11,656 2000
9
Deeldeel.com

Platform offering HR tools, payroll, compliance, and mobility services to help companies manage and scale international workforces efficiently.

Human Resources Services 馃嚭馃嚫 San Francisco 9,873 2019
10
OpenAIopenai.com

An AI research and deployment company focused on creating safe and beneficial general-purpose artificial intelligence for the benefit of humanity

Research Services 馃嚭馃嚫 San Francisco 9,268 2015
11
Anduril Industriesanduril.com

Transforms military capabilities through advanced technology and rapid R&D, delivering off-the-shelf products and path-making systems to support warfighters and allied defense operations.

Defense and Space Manufacturing 馃嚭馃嚫 Orange County 8,658 2017
12
Ripplingrippling.com

Workforce management system streamlining business operations by consolidating data and applications for payroll, IT, expenses, and more into one unified platform

Software Development 馃嚭馃嚫 San Francisco 7,811 2016
13
Toastpos.toasttab.com

Toast empowers restaurants with cloud-based software and hardware to streamline operations, drive revenue, and enhance guest experience through POS, marketing, and HR solutions

Software Development 馃嚭馃嚫 Boston 7,762 2011
14
Cohesitycohesity.com

The company offers data protection and insights through a hyper-scale platform, AI-powered intelligence, zero trust security, third-party extensibility, and high customer satisfaction

Software Development 馃嚭馃嚫 Santa Clara 7,759 2013
15
Veeam Softwareveeam.com

Provides data backup, recovery, security, and intelligence solutions ensuring business continuity and data availability across hybrid cloud environments worldwide.

Software Development 馃嚭馃嚫 Seattle 7,308 2006
16
Notionnotion.com

Combines product roadmaps, company wikis, and meeting notes into a single customizable workspace allowing teams to build and modify their own software tools.

Software Development 馃嚭馃嚫 San Francisco 6,434 2016
17
Palantir Technologiespalantir.com

This company helps institutions solve urgent problems by integrating and analyzing data, enabling them to make better decisions across various industries

Software Development 馃嚭馃嚫 Miami 5,933 n/a
18
WeWorkwework.com

Providing flexible workspaces and solutions for all types of businesses, from established enterprises to growing startups, to propel their success Welcome to the future workplace

Real Estate 馃嚭馃嚫 New York 5,577 2010
19
UiPathuipath.com

Innovative tech company leveraging automation and AI to empower individuals and drive human achievement through a powerful Business Automation Platform

Software Development 馃嚭馃嚫 New York 5,131 2005
20
Rubrikrubrik.com

A company specializing in Zero Trust Data Security, offering solutions such as data protection, ransomware investigation, and application recovery to ensure operational resilience

Software Development 馃嚭馃嚫 Palo Alto 5,113 2014
21
Invisible Technologiesinvisible.co

An operations innovation company leveraging AI, automation, and a global team to transform how companies are built and run more efficiently

Software Development 馃嚭馃嚫 New York 5,099 2015
22
Elasticelastic.co

This company specializes in Enterprise Search, Observability, and Security solutions to enhance customer and employee experiences, ensure smooth application performance, and protect against cyber threats

Software Development 馃嚭馃嚫 San Francisco 5,089 n/a
23
Automation Anywhereautomationanywhere.com

Provides agentic automation by combining goal-driven AI agents, RPA, APIs, and human expertise to orchestrate mission-critical enterprise workflows end-to-end, delivering measurable outcomes across various sectors.

Software Development 馃嚭馃嚫 San Jose 4,542 n/a
24
Gustogusto.com

A payroll and HR platform providing benefits, insurance, and support to streamline operations for over 300,000 businesses nationwide

Software Development 馃嚭馃嚫 San Francisco 4,450 2011
25
Samasama.com

A global leader in data annotation solutions for enterprise AI models, focusing on accuracy, scalability, and ethical practices to advance computer vision AI development

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 4,350 2008
26
Fintechbit.ly

A leading business solutions provider for the beverage alcohol industry, offering innovative payment and data management solutions to streamline B2B transactions

Financial Services 馃嚭馃嚫 Tampa 4,079 1991
27
Celoniscelonis.com

It provides a platform for visualizing and optimizing business processes using existing data, benefiting companies and the environment.

Software Development 馃嚭馃嚫 New York 4,012 2011
28
Navannavan.com

An all-in-one super app for seamless travel, freeing individuals and businesses from the hassles of bookings, expenses, and changes

Artificial Intelligence 馃嚭馃嚫 Palo Alto 3,733 2015
29
Confluentconfluent.io

Cloud-native platform enabling real-time data streams across organizations for digital customer experiences and immediate business operations via intelligent connective data tissue.

Software Development 馃嚭馃嚫 Mountain View 3,452 2014
30
GitLababout.gitlab.com

DevOps platform revolutionizing software development collaboration, speeding up production processes, reducing costs, and increasing developer productivity for global remote team

IT Services and IT Consulting 馃嚭馃嚫 San Francisco 3,411 2014
31
BILLbill.com

Platform simplifying and automating financial workflows, payments, and cash management for small and midsize businesses with AI-enabled software.

Software Development 馃嚭馃嚫 San Jose 3,402 2006
32
Netskopenetskope.com

Provides optimized access and real-time, context-based security for cloud and AI ecosystems, including agents, applications, tools, LLMs, people, devices, and data.

Computer and Network Security 馃嚭馃嚫 Santa Clara 3,395 2012
33
Payoneerpayoneer.com

Global partner for digital commerce, providing technology and connections for businesses worldwide to thrive in the new global economy

Financial Services 馃嚭馃嚫 New York 3,221 2005
34
SentinelOnesentinelone.com

Provides AI-powered cybersecurity platform, revolutionizing security operations with Endpoint Protection, SIEM, Cloud Security, Identity Threat Detection, and managed threat services.

Computer and Network Security 馃嚭馃嚫 Mountain View 3,166 2013
35
Figmafigma.com

The company provides a platform for teams to collaborate in designing and constructing projects together

Design Services 馃嚭馃嚫 San Francisco 3,165 2012
36
Affirmaffirm.com

A technology-driven financial company offering transparent products to improve consumer lives, with a remote-first culture and offices in major cities

Financial Services 馃嚭馃嚫 San Francisco 3,110 2012
37
Apteanaptean.com

Provider of industry-specific software for manufacturers and distributors, offering cloud and on-premise options to help businesses run and grow effectively

Software Development 馃嚭馃嚫 Alpharetta 3,046 2012
38
Poshmarkposhmark.com

A leading fashion resale marketplace connecting buyers and sellers, empowering them to turn their closets into thriving businesses

Retail Apparel and Fashion 馃嚭馃嚫 Redwood City 2,936 2011
39
Klaviyoklaviyo.com

Unified customer platform empowering brands with ownership of consumer data to automate personalized email/SMS communications, foster customer relationships, and drive growth

Marketing Services 馃嚭馃嚫 Boston 2,902 2012
40
Verkadaverkada.com

Transforms how organizations protect people and places. Provides an integrated, AI-powered platform unifying video, access control, sensors, alarms, intercoms, and workplace tools.

Software Development 馃嚭馃嚫 San Mateo 2,727 2016
41
Arcesiumarcesium.com

A leading fintech company providing advanced data, operations, and analytics platform for financial institutions, optimizing investment lifecycle with industry-specific capabilities

Software Development 馃嚭馃嚫 New York 2,704 2015
42
Airwallexairwallex.com

It is a global payments and financial platform that helps businesses manage accounts, payments, treasury, and spend management efficiently.

Financial Services 馃嚭馃嚫 Global 2,625 2015
43
Gongvercel.app

Revenue intelligence platform centralizing customer data and automated workflows to provide business insights, helping professional sales teams optimize performance and increase wins.

Software Development 馃嚭馃嚫 San Francisco 2,592 2015
44
Vuorivuoriclothing.com

Premium performance apparel inspired by Coastal California lifestyle, integrating fitness, surf, sport, and art Breaking traditional activewear boundaries with new perspective

Retail Apparel and Fashion 馃嚭馃嚫 Carlsbad 2,556 2015
45
Yextyext.com

Leading brand visibility platform offering integrated tools and data-driven insights to manage search, social, and website discovery across global and local levels.

Software Development 馃嚭馃嚫 New York 2,536 2006
46
Rampramp.com

It is a financial operations platform that combines various services to help businesses save time and money in managing finances.

Financial Services 馃嚭馃嚫 New York 2,531 2019
47
Miromiro.com

Visual workspace for innovation enabling distributed teams to collaborate, clarify ideas, center customer needs, and deliver products faster with top security and scalability

Software Development 馃嚭馃嚫 San Francisco 2,502 2011
48
OneTrustonetrust.com

The company provides a trust intelligence cloud platform for organizations to ensure responsible data use, privacy protection, cybersecurity, social impact, and trust culture

Software Development 馃嚭馃嚫 Atlanta 2,487 n/a
49
Icertisicertis.com

It provides AI-powered contract management solutions, helping businesses gain insights, automate processes, control costs, and ensure compliance globally.

Software Development 馃嚭馃嚫 Bellevue 2,414 2009
50
Semrushsemrush.com

A leading online visibility management platform offering a suite of marketing tools to help companies improve their online presence and results

Software Development 馃嚭馃嚫 Boston 2,357 2008
51
Brazebraze.com

Cloud-based customer engagement platform for real-time data collection, cross-channel messaging, journey orchestration, and AI-powered experimentation to build lasting relationships and foster growth.

Software Development 馃嚭馃嚫 New York 2,308 2011
52
HashiCorphashicorp.com

The company provides multi-cloud infrastructure automation products to help enterprises worldwide provision, secure, and run their critical applications in the cloud

Software Development 馃嚭馃嚫 San Francisco 2,245 2012
53
OutSystemsoutsystems.com

Provides an AI development platform for enterprises to rapidly build custom applications and AI agents while modernizing legacy core business systems.

Software Development 馃嚭馃嚫 Boston 2,228 2001
54
SymphonyAIsymphonyai.com

SymphonyAI offers AI SaaS solutions to industries like retail, CPG, finance, manufacturing, media, and IT, boosting growth and productivity

Software Development 馃嚭馃嚫 Palo Alto 2,083 2017
55
Russell Investmentsbit.ly

Providing diverse investment capabilities and solutions to institutional, financial intermediaries, and individual investors worldwide, enhancing financial security.

Financial Services 馃嚭馃嚫 Seattle 2,004 1936
56
MathComathco.com

Global leader in Enterprise AI and Analytics, trusted by top organizations Specializing in custom data products, advanced analytics, and connected intelligence solutions

Business Consulting and Services 馃嚭馃嚫 Chicago 1,954 2016
57
Medalliamedallia.com

Leader in experience management with a platform capturing billions of signals across all interactions, using AI to drive predictive insights and business outcomes

Software Development 馃嚭馃嚫 Mclean 1,920 n/a
58
Brexbrex.com

AI-powered spend platform empowering finance teams to make smarter decisions with corporate cards, business accounts, global payments, and intuitive software for tracking expenses

Financial Services 馃嚭馃嚫 San Francisco 1,888 2017
59
Vantavanta.com

Automates compliance, manages risk, and proves trust for businesses through an AI-powered platform, offering tools for audits, vendor risk, and security questionnaires.

Software Development 馃嚭馃嚫 San Francisco 1,882 2018
60
iRhythm Technologies, Inc.irhythm.com

A digital health company using wearable biosensors and data analytics to detect, predict, and prevent disease, with a focus on patient care and innovation

Medical Equipment Manufacturing 馃嚭馃嚫 San Francisco 1,874 2006
61
Fivetranfivetran.com

Centralizes data from SaaS applications and databases into cloud destinations for AI, ML, analytics, and operational workloads.

Software Development 馃嚭馃嚫 Oakland 1,868 2012
62
Grafana Labsgrafana.com

Flexible managed observability platform for monitoring disparate data, resolving incidents quickly, and optimizing telemetry across systems for millions of global open source users.

Software Development 馃嚭馃嚫 New York 1,861 n/a
63
Harnessharness.io

Provides a software delivery platform with modules for continuous integration, delivery, feature flags, cloud cost management, security, and AI-driven development.

Software Development 馃嚭馃嚫 San Francisco 1,722 2017
64
Sigmoidsigmoid.com

A leading data engineering services and AI consulting company, providing actionable insights and innovative frameworks for Fortune 500 clients across industries

Business Consulting and Services 馃嚭馃嚫 Jersey City 1,714 2013
65
Dataikudataiku.com

Enterprise orchestration layer for building, deploying, and governing AI agents, analytics, and machine learning through a centralized environment with transparency and collaborative oversight.

Software Development 馃嚭馃嚫 New York 1,633 2013
66
6sense6sense.com

Predicts potential buyers through AI, recommends engagement actions for anonymous buying teams, and provides tools to create, manage, and convert high-quality pipeline.

Software Development 馃嚭馃嚫 San Francisco 1,603 2013
67
Outreachoutreach.ai

It provides a comprehensive sales execution platform that enhances efficiency in prospecting, deal management, and forecasting for revenue teams.

Software Development 馃嚭馃嚫 Seattle 1,579 2014
68
Shield AIshield.ai

A venture-backed defense technology company developing intelligent systems to protect service members and civilians through AI pilots and products

Software Development 馃嚭馃嚫 San Diego 1,569 2015
69
Snyksnyk.io

Empowering organizations to build fast, stay secure, unleashing developer productivity, reducing business risk, accelerating secure software delivery, innovating without limits.

Computer and Network Security 馃嚭馃嚫 Boston 1,557 n/a
70
Nextivanextiva.com

Powers businesses with an AI-powered customer experience platform, transforming customer engagement with a single conversation hub for amazing service.

Software Development 馃嚭馃嚫 Scottsdale 1,544 2008
71
Dialpaddialpad.com

It provides an Ai-powered platform for customer intelligence, enhancing productivity and collaboration through advanced tools for contact centers, sales, and meetings.

Software Development 馃嚭馃嚫 San Ramon 1,490 2011
72
Almahelloalma.com

A company simplifying access to high-quality, affordable mental health care by helping therapists accept insurance and grow sustainably Available nationwide

Mental Health Care 馃嚭馃嚫 Brooklyn 1,437 2018
73
Darwinboxdarwinbox.com

Enabled by AI and ML, we provide a modern HCM suite for automating HR processes, generating insights, and fostering better workplaces worldwide

Software Development 馃嚭馃嚫 San Mateo 1,401 2015
74
Talkdesktalkdesk.com

Automates modern customer journeys using multi-agent AI orchestration and data unification to provide precise service, sales, and support across various specialized industries.

Software Development 馃嚭馃嚫 San Francisco 1,382 2011
75
Seismicseismic.com

Global enablement platform providing customer-facing teams with skills, content, tools, and insights to drive engagement and revenue growth.

Software Development 馃嚭馃嚫 San Diego 1,329 2010
76
Resilienceresilience.com

Focused on providing high-quality, scalable manufacturing solutions for advanced therapies, partnering with biopharma companies to bring complex medicines to market.

Pharmaceutical Manufacturing 馃嚭馃嚫 Blue Ash 1,301 2020
77
Chargebeechargebee.com

It provides subscription management, recurring billing, pricing optimization, revenue recognition, collections, and customer retention for subscription-based businesses.

Financial Services 馃嚭馃嚫 North Bethesda 1,276 2011
78
Auraaura.com

A mission-driven technology company focused on creating a safer internet for all, providing comprehensive digital security services trusted by millions worldwide

Software Development 馃嚭馃嚫 Boston 1,274 2017
79
PagerDutypagerduty.com

PagerDuty is a digital operations platform that helps companies respond to issues in real-time, improve operations, and collaborate effectively for success

Software Development 馃嚭馃嚫 San Francisco 1,266 2009
80
Wrikewrike.com

Provides a work delivery platform for people and AI, ensuring governed, auditable, and controlled integration of AI into consequential workflows for enterprises.

Software Development 馃嚭馃嚫 San Diego 1,257 2006
81
LogicMonitorlogicmonitor.com

This company provides comprehensive monitoring solutions to help businesses predict problems, unlock opportunities, and advance their technology globally

Software Development 馃嚭馃嚫 Santa Barbara 1,228 2007
82
Intercomintercom.com

It offers an AI-first customer service platform with AI Agent, AI Copilot, and upcoming AI Analyst for improved efficiency.

Software Development 馃嚭馃嚫 San Francisco 1,188 2011
83
Securiti AIsecuriti.ai

A pioneering platform for safe data use and GenAI, providing data intelligence, controls, and orchestration for global enterprises' security, privacy, governance, and compliance

Data Security Software Products 馃嚭馃嚫 San Jose 1,177 2019
84
Creatiocreatio.com

Provides an AI-native, no-code platform for CRM and workflow automation, enhancing customer and employee experiences and boosting team efficiency.

Software Development 馃嚭馃嚫 Boston 1,158 2014
85
Bloomreachbloomreach.com

Using real-time customer and product data, the company personalizes the e-commerce experience across all channels through AI technology, driving more tailored paths to purchase

Technology, Information and Internet 馃嚭馃嚫 Mountain View 1,154 2009
86
Tipaltitipalti.com

Mid-market platform automating accounts payable, global payouts, procurement, and expenses across two hundred countries for secure supplier payments in over one hundred currencies.

Financial Services 馃嚭馃嚫 Foster City 1,119 2010
87
ThredUpthredup.com

Managed marketplace for secondhand apparel, shoes and accessories providing resale technology services for brands while offering sustainable shopping experiences through large-data-driven processing infrastructure and software.

Retail Apparel and Fashion 馃嚭馃嚫 Oakland 1,110 2009
88
C3 AIc3.ai

Provides advanced AI technology and industry-specific applications to optimize operations, anticipate challenges, and drive measurable results across industries.

Software Development 馃嚭馃嚫 Redwood City 1,108 2009
89
Collibracollibra.com

Data Intelligence Cloud provider enabling flexible governance, data quality, privacy for global brands Headquartered in NYC and Brussels, with 700+ customers worldwide and innovative partnerships

Software Development 馃嚭馃嚫 New York 1,100 2008
90
Salesloftsalesloft.com

It provides a Revenue Orchestration Platform using AI to enhance B2B sales efficiency for companies like Google, IBM, and Cisco.

Software Development 馃嚭馃嚫 Atlanta 1,098 2011
91
Highspothighspot.com

It provides a platform for sales teams to enhance performance through content, training, coaching, and analytics for better customer engagement.

Software Development 馃嚭馃嚫 Seattle 1,039 2012
92
Neo4jneo4j.com

A leader in graph databases and analytics, helping organizations uncover hidden relationships and patterns in billions of data connections for innovative problem-solving

Software Development 馃嚭馃嚫 San Mateo 1,031 2007
93
Checkmarxcheckmarx.com

Identifies critical application security issues, enabling secure and efficient software development for enterprises without hindering developer workflow. Improves productivity and ROI.

Computer and Network Security 馃嚭馃嚫 Paramus 1,017 2006
94
Amplitudeamplitude.com

The company assists businesses in maximizing the potential of their products through expertise, with resources available for support and employment opportunities

Software Development 馃嚭馃嚫 San Francisco 1,009 2012
95
Demandbasedemandbase.com

It provides a unified account-based go-to-market platform for B2B enterprises to identify, target, and engage the right customers effectively.

Software Development 馃嚭馃嚫 San Francisco 989 2005
96
Ocrolusocrolus.com

Analyzes financial documents with high accuracy, enabling faster and better decision-making for over 500 clients by detecting fraud and analyzing income.

Financial Services 馃嚭馃嚫 New York 981 2014
97
Fireblocksfireblocks.com

Provides scalable, secure digital asset infrastructure, streamlining payments, custody, tokenization, and trading for institutions across 100 blockchains, unlocking new use cases.

Software Development 馃嚭馃嚫 New York 970 n/a
98
Digital.aidigital.ai

An industry-leading technology company empowering Global 5000 enterprises with AI-powered DevOps platform for digital transformation and smarter software investments

Software Development 馃嚭馃嚫 Raleigh 943 n/a
99
Airtableairtable.com

No-code AI app platform building custom applications, automations, and agents to accelerate business operations, streamline workflows, and manage complex enterprise data across teams.

Software Development 馃嚭馃嚫 San Francisco 928 n/a
100
Talatala.co

A leading financial platform providing instant access to credit, payments, savings, and transfer services to millions globally, leveraging technology and innovation to drive economic progress

Financial Services 馃嚭馃嚫 Santa Monica 920 2011

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 9, 2026.

More company lists in the United States

The same list elsewhere in United States