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Top Series A Data infrastructure companies

Databases, warehouses, lakes, pipelines, and observability for production data. Filtered to companies whose latest disclosed round is Series A.

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Ranked by current headcount across Series A Data infrastructure companies. Refreshed monthly.

  1. 1
    Cvent· Mc Lean, Virginia, United States

    Join #CventNation! www.cvent.com/careersWhat We Do: Cvent is a global market-leading meetings, events, & hospitality technology provider. Our Mission: To bring people together, power the human connection and transform the meetings & events industry through innovative technology.Who We Are: With 5,500+ employees & 30,000 customers, we're one of the largest event technology companies in the world, & we're always looking for the next generation of Cventers to join #CventNation!Cvent is consistently recognized as a Top Workplace by The Washington Post, Washington Business Journal, & certified as a Great Place to Work in the US, UK, & India, among other regional & international accolades.**Career Fraud Alert: In today's digital-first world, fraudulent job offers and hiring manager impersonations, often via social media or chat/messaging apps, continue to increase. To protect yourself, verify all communications come from a legitimate Cvent email (name@cvent.com) and be cautious of requests for personal information, unsolicited messages, and offers via chat or social media. If you suspect fraud, contact HRHelp@cvent.com immediately and apply for positions directly through our careers site at https://careers.cvent.com. Your safety and security are our priority.

    • Series A
    • 6.8k employees
    • Founded 1999
  2. 2
    Altruist Technologies Pvt. Ltd.· PANCHKULA, Haryana, India

    Started in the year 2005, Altruist Technologies has emerged as a front runner in the Mobile Social Networking space in India, Indonesia & Nigeria and fast spreading to other similar geographies. Besides its flagship voice based mobile social network it runs jobsonphone, manages end to end the mobile/digital strategy for multiple media clients and brands, hosts and manages voice infrastructure for leading content owners and distributors. It has made successful forays into M-Governance, Handset based applications and a Video sharing platform.Altruist has emerged as a proven company in the field of Voice and Web Based Value Added Services, Business Process Outsourcing , Information Technology and Interactive Communication solutions to Carrier, WASP, ISP, CSP and Corporate clients with its diligence, operations reviews, analysis of business prospects and interim management.Altruist is the clear market leader in the social networking domain of the Indian MVAS market. It has got strong technology capabilities to provide an array of services in the MVAS space. Altruist has tie-ups with all leading Indian Telecom Operators and with a collective reach of over 55% of the total mobile subscribers.

    • Series A
    • 6k employees
    • Founded 2005
  3. 3
    Quantiphi· Marlborough, Massachusetts, United States

    Quantiphi is an award-winning AI-first digital engineering company driven by the desire to reimagine and realize transformational opportunities at the heart of the business. Since its inception in 2013, Quantiphi has solved the toughest and most complex business problems by combining deep industry experience, disciplined cloud, and data-engineering practices, and cutting-edge artificial intelligence research to achieve accelerated and quantifiable business results. Learn more at www.quantiphi.com.

    • Series A
    • 4.4k employees
    • Founded 2013
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  5. 4
    CHECK24 Vergleichsportal GmbH· München, Bavaria, Germany

    CHECK24, das Vergleichsportal im Internet, ist ein junges, aufstrebendes Unternehmen. Wir bieten Privatkunden kostenlose Vergleiche in den Bereichen Versicherungen, Energie, Finanzen, Telekommunikation, Reisen und Shopping. Damit schaffen wir Transparenz, die sich für unsere Kunden direkt durch günstige Tarife und Preise auszahlt!Unser Erfolg ist nur möglich durch den Teamgeist und die hohe Motivation unserer Mitarbeiter, beides zusammen bringt uns täglich weiter. An unserem Hauptsitz im Herzen Münchens und weiteren Standorten in Leipzig, Münster, Köln und Hamburg arbeiten wir in einem Arbeitsklima, das von Start-up Mentalität und Offenheit geprägt ist. Obwohl wir seit knapp 15 Jahren am Markt sind und mehr als 600 Mitarbeiter beschäftigen, haben wir uns diese Kultur und Arbeitsatmosphäre erhalten.

    • Series A
    • 4.1k employees
    • Founded 1999
  6. 5
    Centific· Redmond, Washington, United States

    Zero distance innovation for GenAI creators and industriesExpertly engineering platforms and curating multimodal, multilingual data, we empower the ‘Magnificent Seven’ and enterprise clients with safe, scalable AI deploymentWe a team of over 150 PhDs and data scientists, along with more than 4,000 AI practitioners and engineers.We bring platforms, partners and 1.8 million vertical domain experts to create high-quality pre-trained datasets, fine-tuned industry-specific LLMs, and RAG pipelines supported by vector databases. These innovations can reduce GenAI costs by up to 80% and bring GenAI solutions to market 50% faster in 230 locales.

    • Series A
    • 3.5k employees
    • Founded 2020

Find engineers and founders at Series A Data infrastructure companies

Series A Data infrastructure companies are some of the most active hirers in the market. The list above ranks the largest Data infrastructure companies whose latest disclosed round is Series A, by current headcount, drawn from public LinkedIn and Crunchbase records. Across 4,994 matching companies, you’ll find senior engineers, founding designers, and operators worth tracking.

Companies at this stage in Data infrastructure share a profile: a working product, fresh capital, and a hiring plan that wants senior people yesterday. Looking at headcount, last round, and HQ side by side gives you a quick read on where Data infrastructure talent is concentrating right now.

Refolk converts this list into a search. Ask for “Series A Data infrastructure founders hiring senior engineers” or “design leads at Series A Data infrastructure companies” and Refolk returns a fresh ranked shortlist with the sources behind each match.

How this list is built

Refolk pulled Data infrastructure companies whose latest disclosed funding round is Series A from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes monthly.

Last refreshed: Thu, 22 Oct 2026 18:39:45 GMT

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How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

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