Fractional Consulting
Embedded senior leadership on a retainer — Martín owns a function or initiative alongside your team until the bottleneck is gone.
Retainer based · 10–30 hrs/month · 3–12 month engagements
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Available
Product Engineering
Martín Sagastume
I’m an Engineering Leader who helps build and scale high-performing tech teams, establish strong engineering culture, and drive product delivery from idea to execution. I focus on balancing technical excellence with business impact, enabling teams to grow sustainably while shipping at speed.
Location
Madrid, Spain
Experience
15-20+ yrs
Function
Product Engineering
Level
Director
My Operator Thesis
I’m an Engineering Leader who helps build and scale high-performing tech teams, establish strong engineering culture, and drive product delivery from idea to execution. I focus on balancing technical excellence with business impact, enabling teams to grow sustainably while shipping at speed.
My Unique Problem & Insight
My Advisory Philosophy
A successful relationship is built on trust, clear expectations, and actionable guidance delivered in a S.C.R.I.P.T-ful way. Regular feedback loops and open communication. Time commitment 2-3 hours per week.
Request a Session »My STAR Portfolio™
Previews only — full studies at intro callCore Industries
AI & Machine Learning
B2B SaaS / Enterprise Software
Cloud Computing & Infrastructure
Professional Services (Consulting, Legal)
Organization Types
Startup (Pre-Seed/Seed)
Startup (Series A-B)
Other
Engagement Pathways
Expert Advising
A personal advisory board including Martín, matched to your goals with quarterly outcome tracking against the initiatives that matter.
3–5 vetted experts · 2–3 hrs/month · Quarterly outcome tracking
Request Advising »Programs by Martín
Master Class: Build Your Second Brain MCP
Martín Sagastume · Head of Engineering, FSV
Your best knowledge is already written down. Build a private knowledge layer Claude can query in plain language, and get answers from what you actually know.
Freemaster class
View the programBeyond the Codebase: Pivoting to Product Engineer
Martín Sagastume · Head of Engineering, FSV
The ticket increasingly writes itself. What doesn’t get automated is judgment: which problem is worth solving, whether the solution fits the user, and how to defend a trade-off in a room full of stakeholders.
$299one-time
View the programGet Matched with Martín in 48 Hours
Every engagement is scoped to your initiative and stage. Tell us what you need and we’ll set up the conversation.