Folsom, CA, USA

Daniel C.

Fractional GTM

Co-founder @ Persona X | Buying group intelligence for agentic GTM | Fractional product & GTM leader | Ex-Sumo Logic (IPO), Exabeam ($2.4B)

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Figma Product Strategy Chief Executive Officer Founding Team Professional Services

Python Artificial Intelligence Director of Product Design

Fractional CEO rates

Testimonials

“Persona X has been instrumental in helping us elevate our company narrative, strengthen our corporate communications, and refine our business positioning across multiple markets and industries. It is a powerful solution for any organization looking to strengthen its brand, elevate its communications, and amplify its impact.”

Rebecca QuiñonezCEO, Q Consulting

“Persona X helped us translate product marketing insight into sales execution much faster than we expected. What used to take weeks to hash out personal opinions of the target prospects real persona now happened in days. More importantly, the precision of our targeted outreach drove positive response rates that genuinely surprised the sales team.”

Gary WaldChief Operating Officer, Milliman

"Daniel Castro is a fantastic UX design leader who excels in crafting innovative designs tailored to key personas within the security industry. His deep understanding of user needs and his ability to translate complex security challenges into intuitive, user-friendly interfaces make him an invaluable asset. Daniel’s leadership and creativity have consistently driven the success of the products he works on, setting a new standard for user experience in security solutions."

Andy SkreiVP, Product Management, Exabeam

Work

CareFlowIQ — Metabolic Health GTM System

personax.ai

I helped CareFlowIQ narrow a broad clinical-data opportunity into a focused Metabolic Health Risk Intelligence wedge, defined ICPs, and sharpen buyer-persona messaging. I built a GTM system of intelligence—market focus, messaging architecture, sales-ready assets, account intelligence, and human-in-the-loop workflows—and supported personalized outreach that generated 3 of 3 positive responses when messaging spoke to buyer pain and decision context. The work sped collateral creation (~5×) and created repeatable, agentic workflows moving toward a 10× delivery cadence while preserving compliance and clinical quality.

Marketing Strategy Product Strategy Business Strategy Artificial Intelligence Strategic Planning

GTM Ground Truth (Persona X article)

personax.ai

I wrote an article defining “GTM ground truth” and why buyer intelligence should require traceable evidence, independent agreement, and recorded human review before teams act. Using a healthtech example, I explain how unsourced beliefs—amplified by AI—stall complex B2B deals and outline a four-step system (context capture, beliefs with receipts, a review gate, and a single-record source of truth) for keeping GTM decisions honest and auditable.

Marketing Strategy Artificial Intelligence Business Strategy Chief Executive Officer

What Is Buyer Intelligence?

personax.ai

I wrote a September 2026 Persona X article defining buyer intelligence for complex B2B and healthtech deals, explaining how teams can aggregate signals from calls, CRM, support and research into actionable buyer insights. I laid out the four-step system (signals, interpretation, buying‑group context, action), cited Gartner research and our workspace evidence (42 recent buyer conversations with sentiment and topic trends), and contrasted buyer intelligence with CRM, sales intelligence and static personas. The piece also links the concept to healthtech use cases and invites teams to explore building a governed buyer intelligence layer.

Marketing Strategy Content Creator

Google AI / Exabeam AI Partnership Committee (2022–2023)

exabeam.com

I served as a leading member of the Google AI — Exabeam AI Partnership Committee from 2022 to 2023. I coordinated cross-functional stakeholders between Google and Exabeam, helped shape partnership strategy, and advised on AI product integration and go-to-market alignment.

Artificial Intelligence Cyber Security

IndependaTV (Angela) — TV for Aging Adults

medium.com

I led the product strategy and UX design for IndependaTV’s Angela platform, a healthtech TV experience tailored for aging adults and their caregivers. I defined the business-aligned product vision, developed personas and mental models for diverse senior segments, and redesigned the TV interface and interaction model to feel like a companion that’s “so simple Grandma could use it.” The product went on to win a CES Best of Innovation Award in 2015.

Product Strategy User Experience Design Product Development Customer Experience Business Strategy

Experience

Feb 2024 — Present

Persona X

CEO/Cofounder

Persona X is a customer intelligence platform focused on B2B buying groups. As AI agents take on more of the work on both sides of the deal, buyers and sellers lose sight of the people actually making the decision. Persona X keeps that picture intact: who is in the buying group, what each person cares about, and what’s changing, so sales teams and their agents act on real buyer context instead of guesswork.

Our own proprietary micro-persona model with advanced analytics

Sep 2019 — Jan 2024

Exabeam

Sr. Director of Product Design and UX Research

Leaders of AI-Driven Security Operations. Exabeam is known for its ease of use and differentiated experience in helping cybersecurity companies with threat detection and incident response.

Member of AI Google/Exabeam partnership team.
Established, matured, and grew Product Design and UX Research as a function.
Led the vision for a persona-based user experience that contributed to the company’s impressive $2.4 billion valuation.

Daniel C.

Fractional GTM

Testimonials