Rosario Leo

Rosario Leo serves as Chief Technology Officer at Truecaller. Truecaller operates in the information technology & services sector with approximately 580.0 employees. The company is headquartered in Solna, Stockholm County. Truecaller generates annual revenue of 174146000.0.

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • We have verified contacts for 6 executives at Truecaller.
• • 2,710 executive contacts are available in Stockholm County.
• • Our database includes 201,469 c suite-level executives.

CloudFlare CDN Sendgrid Gmail Google Apps Microsoft Office 365 Amazon AWS CloudFlare Hosting Freshdesk VueJS CloudFlare Flutter Salesforce MongoDB AT Internet Apache Adform Google AdWords Conversion Eventbrite DoubleClick Conversion Adobe Media Optimizer Google AdSense Amadesa ShareThis Google Dynamic Remarketing Plista reCAPTCHA Commission Junction Google Play Mobile Friendly Open AdStream (Appnexus) Linkedin Marketing Solutions Hotjar AppNexus DoubleVerify Stripe Google Tag Manager Integral Ad Science Twitter Advertising Google Maps (Non Paid Users) Multilingual Facebook Custom Audiences iTunes Ruby On Rails Disqus WordPress.org Cedexis Radar Greenhouse.io Google Analytics Flashtalking Atlas by Facebook Vimeo Sizmek (MediaMind) Google Font API YouTube Altas Relaunched Unruly Media Bootstrap Framework Cision Marchex DoubleClick Google Frontend (Webserver) Google Maps Zergnet Basis AI

mobile internet solutions directory services people search number lookup fintech software development caller id spam blocking real-time caller information reverse phone lookup sms fraud detection message id call screening call recording instant messaging contacts management video caller id voip scam alert machine learning data security user privacy backup contacts intelligent dialer call availability announce call feature missed call reminders schedule sms inbox cleaner identify unknown calls identify unknown messages multi-device support automated blocking user-friendly interface premium business features fraud protection sms sender id lookup android app iphone app community reporting bulk sms management call logs favorite contacts customer engagement notification management user management business profiles advertising solutions consumer safety emergency contacts enhanced calling experience seamless communication spam sms filtering communication analytics data-driven decision making global reach caller identification messaging sms fraud protection verified caller id business communication solutions fraud prevention cybersecurity digital advertising community engagement mobile application emerging markets customer trust communication technology tech-savvy professionals personalized experiences collaborative phone directory ai-powered assistant telemarketing protection user demographics business marketing strategies communication efficiency trust in communication finance technology information technology & services financial services artificial intelligence computer & network security marketing & advertising internet computer software

RJ

Rishit Jhunjhunwala Chief Executive Officer at Truecaller

FK

Fredrik Kjell Chief Operating Officer at Truecaller

BR

Bobbie Reyes Chief of Staff, Office of the CEO at Truecaller

OE

Ola Espelund Group Chief Corporate Affairs Officer, Group Executive Management Team at Truecaller

MB

Madhuparna Banerjee Chief of Staff to the CEO at Truecaller

Outreach Guidance — information technology & services Sector

Technology executives make decisions on infrastructure, tooling, and partnerships. When reaching out to Rosario Leo, lead with your value proposition relative to the stack they currently use. Generic pitches perform poorly; specific technical relevance is key.

Rosario Leo's Position in the MessageCEO Database

• •Rosario Leo is 1 of 6 verified executive contacts we track at Truecaller.
• •49,754 verified executive contacts in information technology & services are in the MessageCEO database.
• •2,690 verified executive contacts in Stockholm County are in the database.
• •102 verified contacts work at information technology & services companies in the 580.0 employee range (same size as Truecaller).

Executive contact data compiled from public business filings, LinkedIn public profiles, company press materials, and verified outbound email testing. We do not publish personal addresses or sensitive identifiers. Methodology & sources · Removal requests handled at /remove-info · Updated June 2026.

How do I reach Rosario Leo directly?

Rosario Leo's verified email address is available to MessageCEO Pro subscribers. They currently serve as Chief Technology Officer at Truecaller. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does Rosario Leo work for?

Rosario Leo is Chief Technology Officer at Truecaller, a company in the information technology & services sector with 580.0 employees. The company is based in Solna, Stockholm County.

Can I pitch or sell to Rosario Leo?

As Chief Technology Officer at Truecaller, Rosario Leo is a key decision-maker in the information technology & services sector. MessageCEO Pro gives you verified email to reach Rosario Leo directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is Rosario Leo in?

Rosario Leo works in the information technology & services industry as Chief Technology Officer at Truecaller. MessageCEO provides verified contact information for executives across all major industries.

Is Rosario Leo's contact information verified?

Yes. MessageCEO verifies executive contact information through multiple data sources and regular validation checks. Rosario Leo's profile is kept up-to-date with the latest available information.

Last updated: June 26, 2026