Top Series B Marketing tech companies

Tools for marketers: CRM, attribution, content, ads, growth, and analytics. Filtered to companies whose latest disclosed round is Series B.

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Ranked by current headcount across Series B Marketing tech companies. Refreshed monthly.

1
XR Extreme Reach· New York, New York, United States
XR Extreme Reach is the leading platform for managing advertising operations. We help brands manage all aspects of their ad creative, from talent payments and rights to ad delivery, so every ad lands how and where it should.
- Series B
- 982 employees
- Founded 2008
2
Rent.· Atlanta, Georgia, United States
Rent. simplifies the business of renting by helping property owners and operators easily attract new renters, engage prospects during their search, and nurture resident relationships. Rent. empowers property teams with 45+ million monthly visitors on our network of sites, vastly expanding reach and exposure to potential renters, increasing leads, and filling more vacancies. But we are so much more than a marketplace. With our unmatched proprietary data, properties can reach in-market renters with search ads, social ads and email marketing solutions that are powered by our marketplace.Visit us at solutions.rent.com to simplify your leasing journey.
- Series B
- 922 employees
- Founded 1989
3
TripleLift· New York, New York, United States
TripleLift is the Creative SSP that transforms digital advertising through creative technology and innovative ad formats. We help publishers, advertisers, and agencies achieve measurable outcomes while enhancing user experiences.Discover how we bring creativity and results together.
- Series B
- 366 employees
- Founded 2012
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4
NewtonX· New York, New York, United States
NewtonX is the only B2B research intelligence platform that delivers AI-speed insights with data you can trace. We help businesses make faster, more defensible decisions, built on verified data across 140+ industries, AI-native automation, and end-to-end research expertise. Trusted by Google, TikTok, Salesforce, Stripe, Microsoft, and Coinbase. Research cited by Gartner, Fortune, Forbes, Adweek, and The Wall Street Journal.
- Series B
- 362 employees
- Founded 2017
5
Firefly· New York, New York, United States
Founded in 2017 in Silicon Valley, Firefly pioneered car-top advertising, transforming urban landscapes with the world’s most advanced moving digital screens. Recognized as one of Time Magazine’s Best Inventions of 2019, we have been at the forefront of the OOH industry since our launch, integrating data-driven targeting and smart city partnerships to deliver measurable high-impact campaigns.With a strong presence in all major U.S. markets, Firefly continues to expand its global footprint, operating in the UK, Canada, Spain, and the UAE. Beyond our high-impact digital tops, which deliver dynamic messaging with eye-level visibility, our static car tops, car wraps, in-car & golf screens, and experiential offerings further enhance brand reach, ensuring precision and impact in every campaign. At Firefly, we believe in empowering people—from the drivers who earn extra income through our platform to the talented team members shaping the future of OOH advertising. We foster an environment where collaboration, creativity, and growth drive everything we do.As one of the fastest-growing OOH companies in the US, Firefly is redefining out-of-home advertising at scale, delivering high-performance solutions for brands, cities, and businesses worldwide.
- Series B
- 353 employees
- Founded 2017

6
Firework· San Mateo, California, United States
Firework is powered by enterprise-grade infrastructure designed to scale personalized video experiences and agentic shopping journeys across digital commerce.• AI Video Solutions power Shoppable Video, Video Showrooms, and AI Content Solutions, enabling brands to source and curate authentic influencer, UGC, and social-native content, while also generating commerce-ready video through AI. By optimizing video content operations, Firework transforms video into a scalable engine for discovery, education, and conversion.• AI Agentic Solutions introduce contextual, real-time shopping assistance through the AI Shopping Agent. The agent interprets shopper intent to deliver personalized answers and guidance alongside shoppable video throughout the shopping journey. By combining conversational intelligence with personalized video delivery, Firework helps shoppers make confident decisions and move toward purchase.Together, these solutions operate within a unified system, where content, intelligence, and video commerce continuously reinforce one another, built for enterprise scale and seamless deployment across DTC sites, retailer platforms, and omnichannel experiences.
- Series B
- 349 employees
- Founded 2017
7
Hitwise (Experian)· Santa Monica, California, United States
We want to inform you that for reasons outside of our control, we have closed our company, Hitwise as of February 2020. Hitwise (www.hitwise.com) Hitwise provided marketers unique insights based on the largest sample of internet behavior and consumer attitudes—revealing the audiences, search terms, and traffic sources that they need to get a competitive edge. Marketers used Hitwise’s powerful audience modeling and activation technology to segment and target their prospective customers.
- Series B
- 286 employees
- Founded 2000
8
JumpCrew· Nashville, Tennessee, United States
Launch-ready sales teams, experienced leaders, and time-tested processes to help you acquire new customers faster and with less risk than doing it alone.We've driven over $5B in pipeline for more than 450 companies like Alibaba, X (formerly Twitter), Airbnb, Nextdoor, Zillow, Cintas, and Experian. Our clients trust us to build awareness, drive leads, close sales, and increase LTV.JumpCrew was acquired by iQor CXBPOTM in August 2025 to accelerate lead generation as part of iQor's seamless end-to-end customer lifecycle service, backed by global scale and infrastructure.
- Series B
- 241 employees
- Founded 2016
9
ZipLocal· Pleasant Grove, Utah, United States
ZipLocal is a digital marketing service and software that reaches communities nationwide. ZipLocal is ROI-focused and results-driven. ZipLocal has a presence in more than 150 U.S. markets. Rich and relevant local content with a strong focus on interactive and immersive media sets the company’s mobile applications and local search site apart from other search sites. Ziplocal’s robust local search products combine comprehensive data as well as the latest geo-targeting technologies with a focus on delivering results for advertisers and the best end-user experiences for consumers.
- Series B
- 233 employees
- Founded 1971
10
Tracksuit· Auckland, Auckland, New Zealand
Beautiful, affordable & always-on brand tracking.Tracksuit is the common language for companies to measure and communicate the value of brand. We’re on a mission to get brand data in every boardroom.Join us on the track 👇
- Series B
- 230 employees
- Founded 2021

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Find engineers and founders at Series B Marketing tech companies

Series B Marketing tech companies are some of the most active hirers in the market. The list above ranks the largest Marketing tech companies whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. Across 143 matching companies, you’ll find senior engineers, founding designers, and operators worth tracking.

Companies at this stage in Marketing tech 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 Marketing tech talent is concentrating right now.

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

How this list is built

Refolk pulled Marketing tech companies whose latest disclosed funding round is Series B 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: Mon, 26 Oct 2026 16:05:20 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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