Results

Our Customers: The Backbone of the Economy

The founders and teams we work with share things with us they don't share with their boards or investors. That trust is not a marketing asset. Our case studies focus on the problem and the outcome — never on the details that could identify the people behind them.

If you need direct references for due diligence, we provide them privately.

Marta Borskowska
CEO
All
Problem Type:
Founder Dynamics
Domain:
Co-founder Structure
Industry:
Venture / VC-backed
Problem Description:

A VC-backed startup was scaling through successive funding rounds with unresolved tension between three co-founders. The equity structure and operational roles had never been formally designed — they had simply evolved. The founding team needed to restructure before the cracks became irreversible.

Problem Solution:

We ran individual diagnostics on each founder — mapping personality, life goals, values, and long-term vision separately from their financial interests. Only once that full picture was clear did we facilitate the structural conversation. One co-founder stepped back from operations. The remaining two took on increased management responsibility. The agreement was built on genuine clarity, not forced compromise.

Outcome:
The company is thriving, raising new rounds, and scaling beyond its home market.
Co-Founders Dynamics
Problem Type:
Founder Dynamics / Execution
Domain:
Leadership Succession, Org Design
Industry:
Venture / Growth-stage
Problem Description:

A founder wanted to step back from operations and transfer the CEO role to their co-founder. An acquisition was in progress. We began preparing the incoming CEO — then the deal fell through. The founder had to return. The organization was left with two founders, no clear authority structure, and a business that couldn't afford to stall.

Problem Solution:

We helped them restructure roles, reporting lines, and decision rights. Over time the co-founder found his footing in sales, grew into the CEO role, and the original founders transitioned to the board. We then worked with the full management team — all first-time managers — on individual development and collective effectiveness. We also mediate board-level friction between the founders when it surfaces.

Outcome:
Four years of continuous month-on-month growth since the product strategy was redefined. The org is stable. The board is functional.
Co-Founders Dynamics
Execution
Problem Type:
Execution
Domain:
Management Team Design
Industry:
Services / Growth-stage
Problem Description:

A founder came to us with a scattered management team. The layer between him and the business wasn't working — roles were unclear, the right people weren't in the right seats, and the founder was absorbing too much operational weight as a result.

Problem Solution:

We helped hire a Head of Delivery and a Head of Sales. The Head of Sales didn't work out — we had advised the founder to lead sales himself from the beginning, but he wanted to test the hire first. He eventually came around. We also coached two junior team members to step into leadership roles and operate with genuine authority rather than remaining in the founder's shadow.

Outcome:
The business is stable, the team is coherent, and the founder leads sales himself — which is where he always had the most impact.
Execution
Problem Type:
Growth
Domain:
Go-to-Market, Sales
Industry:
B2B / TV Platform
Problem Description:

A B2B company in the TV platform space had a strong product and real customer validation — but no structured revenue motion. No BDM function, no sales process, and no clear hypothesis about how to build one. They were growing opportunistically, not deliberately.

Problem Solution:

We built a go-to-market strategy from scratch: a structured set of hypotheses to test, sequenced by risk and available resource. Alongside that, an execution plan — what to do, in what order, and what to measure. The work required deep understanding of both the product and the psychology of buyers in their specific market. Generic frameworks wouldn't have held up here.

Outcome:
Execution is underway. The company now has a defined revenue motion, clear roles, and a testable strategy built on evidence.
Growth
Problem Type:
Founder Dynamics / Execution / Growth
Domain:
Full-spectrum
Industry:
Agency / Services
Problem Description:

Two founders remained after a difficult co-founder exit. Three junior staff. A company that had just been through a rupture and needed to stabilize before it could grow.

Problem Solution:

We resolved the immediate conflict and have supported every significant layer of the organization since — recruitment, org design, management team development, performance coaching, financial reporting systems, and strategic advisory on investment and scaling. We restructure the org every time the market shifts. We work with managers on both their skills and their relationship with the founders. Seven years of continuous engagement.

Outcome:
Top 3 in their domain in Poland. 30+ people. Industry awards. Every 2025 client renewed in 2026 at higher contract value.
Co-Founders Dynamics
Execution
Growth
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Testimonials

When you’re growing fast, the problems stop being about customers and start being about people — hiring the wrong ones, promoting the right ones too late, managing a team that’s doubling before you’ve even figured out who you are as a leader. Mangrove has been with us through all of those moments. Not with frameworks or theory, but with real, hands-on support. I honestly don’t know what version of Lettly we’d be running today without them. Probably a worse one.

Jakub Orłowski
Co-founder & CEO, Lettly

Marta has been with us since we were 2 founders arguing over a shared desk. And three junior employees listening to those arguments. Ten years later, we’re 30+ and still calling her first when something important needs thinking through. She’s helped us navigate co-founder conflict, strrengthen and develope our managment team we actually trust, and make strategic calls we wouldn’t have had the clarity to make alone. Mangrove isn’t a consultant you hire. It’s the person who knows your company almost as well as you do (sometimes better than you) and tells you the truth without judgment.

Zuzanna Śleszyńska
Co-founder, Lettly

Entrepreneurship is a great journey, but it can easily get hectic. When it does, even easy situations turn out to be super difficult to solve and founders themselves often feel overwhelmed and lost . This was exactly when I started working with the Mangrove team. They provided me with ready-to-use solutions that quickly lead my company to visible results and, as important as business results, quickly put my mind at ease. If you got stuck in similiar situtation, those are probably your go-to people.

Mateusz Macha
Founder, Humeo

Working with Marta — despite her being genuinely warm — is not a pat on the back. It's research-based, precise, and deeply individual. She's like a surgeon: she analyzes, diagnoses, cuts, and stitches. Except the patient is an active participant in the operation. We came to Mangrove because co-founder collaboration is where many startups quietly fall apart. Marta helped each of us understand our own thinking and working styles, then helped us understand each other's. I learned things about myself and my co-founders I hadn't seen before. It strengthened our relationships, sharpened how we divide responsibility, and made our leadership team genuinely more effective.

Ada Andruszkiewicz
Co-founder, Talkie

I've referred several founders from our portfolio to Mangrove, and the difference it makes is visible. These are people under real pressure, and Mangrove's work helps them think more clearly, lead more effectively, and move faster. As an investor, I can spot gaps that equity and board seats can't fix — Mangrove fills exactly that space.

Przemek Jurgiel-Żyła
Co-Founder, Movens Capital

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