Accelerate Growth.
We’re an advisory firm focusing on strategy for late-stage startups, VCs, PE-backed companies, and large firms involved in technology.
Capabilities.
Each partner in our firm has developed an expertise in a capability helping organisations, big or small, scale.
- Business Strategy
- Product & Design
- Marketing
- Transformation
- Sales & Go-To-Market
- M&A
- Strategic Futures
- Market Research
Industries.
We have honed a deep experience in specific industries and are obsessed with creating sustainable value, including for Venture Capital and Private Equity.
- Health tech
- Fintech
- Crypto / Web3
- Deep tech
- Digital – App developers
- Consumer Electronics
- Mobility
- Telecom
Meet the Team.
Mangosteen is a community of strategists, innovation experts, and industry veterans who help organizations—big and small—stay ahead now and in the future.
Everyone on our team has worked ‘behind the veil’ at a senior level in large consumer-facing organizations and has the scars to prove it.


What’s our secret sauce ?
We’re fast and practical. And like the Mangosteen fruit, which is low in calories but rich in essential nutrients, we strive to create tremendous value while remaining purposefully lean.
Want to join?
Mangosteen is headquartered in London and we are a team with diverse backgrounds. The businesses we help grow and succeed are from all around the world.

Julien Kervella
Partner

Nathalie Oestmann
Partner

Jean-Daniel Ayme
Partner

Liyan Meng
Business Analyst

Maria Pina
Business Analyst
An outline of our AI use cases
Discover how our tailored strategies and hands-on support have helped clients overcome challenges, seize opportunities, and create lasting impact across industries.
Business Impact of Gen AI.
A leading Digital Health company asked Mangosteen to assess the benefits of Gen AI solutions and define their short- and mid-term strategy.


A Tech Stack for a Voice Assistant.
A large tech company realised its voice assistant couldn’t scale at cost across languages and domains of conversation. Its own organisation didn’t have the resources to upgrade its tech stack in a timely manner. Mangosteen was tasked to identify acquisition targets.
The future of Mobility.
Cars are transforming into “smartphones on wheels.” AI, software, and semiconductors are disrupting mobility and reshaping driving experiences. Mangosteen was tasked with exploring these evolving vehicle applications and their consequences for a major tech company.

Investments.
We like to put some skin in the game with the companies we work with – specifically early stage tech startups building an ethical and sustainable world.
Explore our 2024 investment.


come talk to us
Send us your pitch deck
Latest Articles from Mangosteen.
Our latest insights on tech strategy, growth, and market dynamics.
Download Our White Papers.
- An analysis of the Unicorn ecosystem worldwide
- Chinese Unicorns, a rise to dominance ?
Our Advisors.
Meet our trusted advisors — a diverse group of experts who combine deep industry knowledge with strategic insight to guide our clients through every stage of their journey.

Chris Hughes
EPAM Continuum, Leader of
the Experience Consulting &
Design Practice

Herve Mouneyrac
Pharma executive
M&A expert

Rob Magowan
Executive recruiter
Founder of Design Leaders

Max Pog
Serial entrepreneur,
expert in Venture Studios

Keith Lippert
Head of Financial
Crime at Monzo