What Does Zefr Do?

Total employees242
HeadquartersVenice
Founded2009

Zefr is a global technology company specializing in contextual intelligence for brand safety and suitability in digital video advertising. Leveraging patented Human-in-the-Loop AI technology, Zefr provides brands and agencies with precise content targeting and measurement solutions across major platforms such as YouTube, Meta (Facebook & Instagram), and TikTok. Their technology helps advertisers ensure their campaigns run alongside content that aligns with their brand values, enhancing media effectiveness and protecting brand reputation in complex digital environments. Zefr aims to empower responsible marketing and create a more transparent and brand-safe video ecosystem.

Where Is Zefr's Headquarters?

Zefr officeZefr officeZefr officeZefr office
*Images sourced via web search. Rights belong to original owners

HQ Function

The Venice headquarters serves as the primary center for Zefr's executive leadership, core technology development, product innovation, engineering, global sales strategy, marketing, and corporate operations.

Notable Features:

Located in a modern office space reflecting the creative and tech-forward spirit of Venice. The office likely features open-plan designs, collaborative workspaces, and amenities conducive to innovation and employee well-being.

Work Culture:

Zefr's HQ is known for a dynamic, innovative, and collaborative work culture. It blends the fast-paced nature of a tech company with the more laid-back, creative atmosphere characteristic of Venice Beach, encouraging employee engagement and a focus on cutting-edge solutions.

HQ Significance:

The Venice headquarters is pivotal as it's where Zefr's foundational technology was conceived and continues to evolve. Its location within Silicon Beach provides access to a rich talent pool, industry partnerships, and venture capital, crucial for its growth in the ad-tech sector.

Values Reflected in HQ: The headquarters' design and atmosphere likely reflect Zefr's core values such as innovation, transparency, collaboration, and a commitment to creating a responsible digital advertising ecosystem.

Location:

Zefr supports its global clientele and platform partnerships through strategically located offices and teams across North America (including Los Angeles, New York, Chicago, Toronto), Europe (London, Paris, Berlin), Asia-Pacific (Sydney, Singapore, Tokyo), and Latin America (São Paulo). This international presence allows Zefr to offer localized sales, client support, and market-specific insights, ensuring their AI-driven brand safety and contextual targeting solutions are effectively implemented worldwide.

Street Address:

3100 Abbot Kinney Blvd, Suite 200

City:

Venice

State/Province:

CA

Country:

USA

Where Else Does Zefr Operate Around the World?

New York, NY, USA

Address: 75 Varick St, New York, NY 10013, USA

To strengthen Zefr's presence in the North American East Coast advertising market, providing localized support and strategic partnerships.

London, UK

Address: The Binary, 10 St Mary at Hill, London EC3R 8EE, UK

To drive Zefr's growth in the European and EMEA markets, tailoring solutions to regional advertising standards, languages, and regulatory environments.

Chicago, IL, USA

Address: 222 W Merchandise Mart Plaza, Suite 1212, Chicago, IL 60654, USA

To provide dedicated support and expand Zefr's footprint within the key Midwest advertising ecosystem.

Sydney, Australia

Address: Level 10, 5 Martin Place, Sydney, NSW 2000, Australia

To lead Zefr's expansion and service delivery in the APAC region, offering localized expertise in brand safety and suitability.

Buying Intent Signals for Zefr

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Zefr? Meet the Executive Team

As of April 2025, Zefr' leadership includes:

Richard Raddon - Co-Founder & Co-CEO
Zach James - Co-Founder & Co-CEO
Toby Byrne - President
Andrew Serby - Chief Commercial Officer
Ross Nicol - Chief Technology Officer
Janice Figueroa - Chief Financial Officer
Kelsey Garber - Head of Marketing

Who's Investing in Zefr?

Zefr has been backed by several prominent investors over the years, including:

Institutional Venture Partners (IVP)
U.S. Venture Partners (USVP)
Shasta Ventures
First Round Capital
Venrock
BDMI (Bertelsmann Digital Media Investments)

What Leadership Changes Has Zefr Seen Recently?

Hire1
Exits0

Zefr has made strategic appointments to its leadership and board to support its growth and market expansion. In the last 12 months, there has been 1 notable new hire to the executive team and 1 significant board appointment. No major executive departures have been publicly announced.

New Appointments:

Kelsey Garber, Kelsey Garber appointed as Head of Marketing to drive global marketing initiatives.
Kristi Argyilan, Kristi Argyilan joined Zefr's Board of Directors, adding significant retail media insight.

What Technology (Tech Stack) Is Used byZefr?

Discover the tools Zefr uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Zefr Email Formats and Examples

Zefr commonly utilizes the [first_initial][last]@zefr.com email format (e.g., jsmith@zefr.com). Another possible format, though less common, could be [first].[last]@zefr.com (e.g., john.smith@zefr.com).

[first_initial][last]@zefr.com

Format

rjames@zefr.com

Example

90%

Success rate

What's the Latest News About Zefr?

Zefr Blog • March 12, 2024

Zefr Enhances Brand Suitability Controls on YouTube Shorts for Google Video Partners

Zefr announced expanded brand suitability controls for advertisers on YouTube Shorts through Google's Video Partners program. This enhancement allows brands to apply Zefr's GARM-aligned suitability mapping for their YouTube Shorts inventory, providing more granular control over ad placements....more

Business Wire • January 24, 2024

Zefr’s Contextual Data Now Available Through AWS Data Exchange

Zefr announced that its contextual data solutions for platforms like Meta, TikTok, and YouTube are now available via AWS Data Exchange. This allows customers to easily access and integrate Zefr's data for enhanced targeting and brand safety analytics within their AWS environment....more

Zefr Blog • December 5, 2023

Zefr Achieves MRC Accreditation for YouTube Brand Safety and Suitability Reporting

Zefr announced it received accreditation from the Media Rating Council (MRC) for its brand safety and suitability reporting on YouTube. This accreditation covers content-level analysis and reporting of brand safety and suitability for YouTube video campaigns....more

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