Donato Marco Mangialardo

Fractional GTM/PMM Operator for B2B SaaS/Tech | Helping founders fix current growth stalls, then build scalable GTM engines | Silicon Valley–honed | 1→50→Nasdaq, 100% bootstrapped | 5× Founding PM/PMM in fast-growth env.

Castro & Partners - The Product Management Firmex-Giunti Psychometricsex-eXact learning solutions

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As Fractional / Embedded GTM Operator for B2B Tech Startup, Seed to Growth:I help founders break through growth bottlenecks by diagnosing and eliminating the root causes.

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Then I build and tune GTM engines designed to exploit, not be constrained by, the new rules AI is rewriting,so they can drive repeatable, defensible, scalable growth, ready for expansion. With North American market standards and Early-stage startups usually cannot hire a full-time GTM strategist or Product Marketing leader. People with that depth are rare, expensive, and usually already taken. So they default to a DIY approach, with the founder taking it on Yet this is exactly where deep expertise makes all the difference. A GTM operator who brings the muscle, pattern recognition, and fresh outside perspective needed to make the leap. Not playbooks that no longer I bring the clarity required for aligned teams and repeatable growth, so you can focus on the product and building the future instead of putting out When the time is right, I leave behind skilled teams and systems that outlast the I have built growth foundations from scratch at B2B tech startups like yours for 20+ As at Docebo: from a small Italian startup to a global trailblazer, from $1M to $50M ARR, and a dual IPO (NASDAQ and Notably, I have led two expansions of Italian startups into the North American market, bridging product teams in Italy with sales and marketing teams in North America and closing cultural and product-to-revenue Already working with an agency? I can make their work more impactful by arming them with the right GTM I suggest a try-before-you-buy approach: book a call, tell me what’s happening, and let’s discuss it in full working mode so I can run my diagnostics and share my view. Then, if we feel confident, we can jumpstart a two-week sprint that gives us the clarity needed for focused action, so you no longer have to wear the GTM hat RELEVANT CAREER HIGHLIGHTS| ▪ T-shaped Product Marketing and Product Management expertise, end-to-end | ▪ Built framework-driven methods for positioning, messaging, and CI that scaled impact across continents. | ▪ Customer discovery via structured customer interviews (not AI research), ICP definition, use case segmentation, and actionable Buyer and User Persona models |▪ Established product decision-making rigor by bringing data-driven insights to the table, reducing opinion-driven debates and groupthink.