
Grow Wild. Scale Smart. Stay YOU.
We help early-stage founders and accelerators grow purpose-driven ventures with smart strategy, hands-on experiments, and a lot of heart.

Isabella Rossi


You're building something bold for people, planet, and the future. MaSí is your solid partner here to help you grow without losing your soul.
Ready for your impact to stomp louder?
Scaling’s starting to feel like scrambling.
Tell me more!You feel calm, clear, and confident instead of overwhelmed by a giant to-do list.
So people lean in, understand your mission right away, and want to support or fund you.
You feel energized and steady as you move forward – not buried in more homework, but guided by a simple plan that fits you and your current stage.
So you finally feel secure and excited to scale, without compromising your soul or mission.
Like elephants and zebras in the wild, we move stronger together.
🦓 You're the zebra: purpose-driven, balancing profit and impact.
🐘 MaSí is the elephant: your steady, strategic partner helping you grow without losing what matters.

I spent years helping traditional businesses scale – until COVID hit just 2km from my home in Italy. Supporting grassroots impact orgs through that chaos was my wake-up call.
Since then, I’ve helped 100+ purpose-driven founders:
Now I want to help you do the same.
That’s why I created MaSì – built on what I know actually works from leading accelerator programs in 20+ countries.





Free clarity call – you talk, I listen. If we click, I’ll send you your growth plan.
We dive into our 1:1 sessions or 3H workshop to cut the noise and build traction.
We wrap up with an honest review and a roadmap to keep you moving.
I was confused about my marketing strategy and how to reach my
audience. Isabella supported me with clear guidance and tools – always with the kindness,
experience, and professionalism that define her.
Isabella brought passion, expertise, and genuine care – going above and
beyond to mentor our startups and elevate our acceleration program. Her impact was clear,
reflected in outstanding mentoring evaluations.
Isabella brought heart, care, and devotion to helping our startup
navigate its path. We’re deeply grateful for her guidance and wholeheartedly recommend her
skills, wisdom, and dedication.I’m fluent in Italian, German, and English – and my Spanish is good enough to get things done too.
I’m a generalist, so just call me when things get messy. Fundraising, go-to-market, expansion, company building – strategy ties it all together.
We kick off with a 1:1 session to set your goals and priorities. From there, we can tackle fundraising, go-to-market, market expansion, company building, team design, positioning & messaging, business model & pricing, partnerships, and even founder mindset.
My network is your network. I’ll connect you with people and communities who can help you along the way. A warm introduction can make a big difference. If you’re a community or network looking to collaborate, send me a message at hi@masi-growth.com.
From idea or concept through pre-seed to seed. I love working with early-stage founders because this is when strategy, focus, and the right decisions have the biggest impact on shaping a successful venture.
Not at all. I’m based in Europe, but I love working with:– Founders outside Europe aiming to enter European markets (I focused on International Growth at Google) – Founders from emerging markets (parity pricing available – just drop me a note at hi@masi-growth.com) – Incubators and accelerators running multi-country programs (I’ve handled complex, international programs and funders)
Absolutely. I can help you analyse your ideas strategically and cut through the clutter to find what’s worth pursuing.
For sure! I’ve worked with nonprofits and get the challenges. Drop me a line at hi@masi-growth.com, and we’ll see what we can tackle together.
I’m all about access! Just drop me a note at hi@masi-growth.com and include: – Your company status/legal form (founded, in founding, or not founded yet) – Any government benefits you’re receiving (like ALG 1 in Germany)

Take this 2-minute quiz to find your Founder Animal
– and get 3 clear moves to grow with less chaos.