About
Marco Guillermaz
I'm a Fractional Product Manager, AI Product Builder and automation consultant based in Milan. I work with founders, startups and scaleups to make better-informed product decisions, bring AI-assisted development into day-to-day work and reduce manual work through reliable automations that are easy to monitor. The fractional model keeps my contribution flexible: I work on product strategy and, when needed, design and build the solution myself.
How I got here
I didn't start in product. I started in Software Quality Assurance, designing and automating full-stack test suites for companies including HP, Fastweb and Facile.it. It was the best way to learn where and why things break, and to stop treating "it works on my machine" as proof that software works. That experience taught me to look at software from the perspective of the people who actually use it and set me on the path to product management.
That instinct stayed with me as I moved into product. At Facile.it, I went from QA to the company's first Product Manager, and since then I have measured my work by customer outcomes, not the number of features released. The method has stayed the same: I define the problem space first, examine the why from different angles, validate hypotheses against data and through direct conversations with the people who actually use the product, then build only what that validation supports. The team, though, stays at the center of my system. I work alongside people to create shared processes and structures, challenge assumptions and develop a product mindset. The goal is a team that can keep growing the product without me.
Today, this approach also includes AI-assisted development: I bring it into the team's day-to-day work with guardrails, review and shared governance, so the process and its decisions remain reviewable and under control. As an AI Product Builder, I design and build software myself, as I did with Staff Manager. Mistakes in my first projects led me to create Tierward, an open-source framework that adds a governed harness to AI coding and uses phases and mechanical gates to replicate the functions of a product team. The principle is simple: AI generates, but control stays with you or your team. Value does not come from the number of features released, but from the outcomes produced for the people who use the product and for the business.
Experience
- Fractional Product Manager · AI Product Builder · Automation ConsultantI work with founders and teams on discovery, strategy, roadmaps and product processes. When the project calls for it, I design and build products and automations directly with Claude Code, n8n, RAG and CAG, placing guardrails and shared governance around AI-assisted delivery.
- Senior Product ManagerI led the roadmap for an AI-powered AdTech platform in Mondadori Media's MarTech ecosystem, from user research and competitive analysis to turning machine-learning capabilities into production-ready features. These included a drop-and-drift detection algorithm for revenue and campaign KPIs such as CPM and CTR, designed to trigger automated alerts.
- eCommerce Digital PM · Growth, Automation & AII led the headless replatforming of four eCommerce sites, moving from WooCommerce to BigCommerce, with Builder.io as the CMS and Prismic for the blog. I also covered technical and semantic SEO and GEO, the data layer, tracking with GTM and GA4, and monitoring with GSC. For post-purchase processes, I designed cross-brand n8n automations, shipping service integrations and multi-brand product feeds.
- Product Manager · B2B SaaS · first PMPromoted from QA to become Facile.it's first Product Manager, I built the product function from scratch and introduced a product mindset across the company. I then conceived and designed a B2B platform for its consumer credit brokerage network, digitizing applications, signatures and commissions for more than 300 people across physical stores. The paperless workflow reached 80% adoption in two months and saved around €150K per year.
- Software QAI joined CHILI as one of its first seven hires and watched it grow from H-FARM incubation to more than 100 people. I worked on QA across web, mobile and Smart TV, designing and automating test suites with JMeter, Robot Framework and Postman. I also handled performance testing and supported the international expansion of the OTT platform.
- QA Engineer · consultant at FastwebMy first professional role, as an HP consultant at Fastweb. I validated Huawei MSAN VoIP network devices and designed functional and performance test plans.
Education
- BSc in Computer Science for Telecommunications
- Master in Digital Product Management
- Selected masterclasses
Languages
Italian (native) · English (C1, advanced)
If you need senior product guidance without a full-time hire, or want to turn an idea into a concrete solution, let's start with a free 60-minute call. We'll clarify the context, needs and constraints, then consider the best way to work together. If we're not a fit, you'll still leave with a clearer direction.