Customer strategy & relationship
Understand the challenge and stay focused.
Diagnostic, business development, decision-making, and full-project coordination.
03 · Collaborative
The strength of a group.
The right knowledge, at the right time.
Founded by Oscar Dessein, Mellion relies on Insight Group : A solid foundation of 5 to 50 experts, aged 21 to 55, mobilized according to the specific segment of your challenge. We blend current technical mastery with the experience of professionals who have already delivered in demanding environments, and call on a wider circle when the mission requires it.
Our organisation
Close coordination,
the reach of a group.
Mellion relies on Insight Group and a network of available experts, depending on the exact nature of each mission. You thus gain access to the right expertise without funding a generic team.
This organisation combines operational proximity with deep execution. Strategy, design, technology, artificial intelligence, automation, or cybersecurity: each topic is entrusted to professionals that master its realities, constraints, and advanced standards.
Your interlocutor
Oscar Dessein
Founder of Mellion · Business Consulting & Development
Student at ESCP Business School
Oscar oversees each mission from the first exchange to delivery. He translates business challenges, activates relevant expertise within the Insight Group network, and ensures that decisions remain aligned with the expected value.
MELLION
Mellion · Insight GroupDesign & Experience
Make the complex obvious.
Journeys, interfaces, and visual identity designed for usability, engagement, and brand consistency.
Technology & Security
Build for longevity.
Architecture, development, AI, automation, and cybersecurity serving a reliable and evolving solution.
The Insight Group network
Insight Group: practical expertise, available when you need it.
The mission remains driven by Mellion. Insight Group is our foundation: from 5 to 50 experts, aged 21 to 55 years old, selected for their practical expertise of their field and their ability to deliver in a demanding context. The most experienced professionals bring depth and reliability; the younger ones bring very current tool and technology practice. When the challenge warrants it, we activate a wider circle of recognised specialists in addition. Thus, you gather the right competencies, on the right segments, for the necessary duration.
5–50experts
Mobilized to address your challenge
21–55years
Proven experience and current mastery of technologies
1dedicated contact person
To support you and respond at any time
Core management
Diagnostic, decision-making, customer relationship, and overall coherence.
Specialized Experts
Professionals selected for their practical expertise, experience, and in-depth knowledge of their field.
Activatable network
Insight Group and its network of specialists allow for the creation of a precise team for each challenge.
References
Expertise trusted by discerning organisations.
An insight into the projects carried out by the expert professionals that make up Mellion.
- OverSOC
At the heart of the East
The names and logos mentioned remain the property of their respective owners.
Our history
Mellion emerged in the space
between decision and action.
Our starting point is not a technology. It's a recurring issue: the ambitions are clear, but the tools, teams, and processes do not always keep up fast enough.
The situation
Good recommendations often remain unimplemented.
On one hand, the consultancy understands the challenge but does not build the solution. On the other hand, the technology produces without always linking the choices to business value.
The model
Link clear oversight to real expertise.
Mellion leads the mission and activates Insight Group to bring in truly qualified specialists. We thus move from diagnosis to solution without losing sight of the initial problem.
Today
Six transformation levers, from decision to transmission.
Decide, streamline, build, accelerate, expand, and transmit: six levers that form a continuous offer, from diagnosis to the enhancement of team competencies.
What guides us
Utility
Build only what will be used. A feature that no one opens produces nothing.
Clarity
State what we know, what we assume, and what still needs to be verified. Bad news comes early.
Sustainability
The simplest solution that truly solves the problem, never the most impressive one to present.
Transmission
Empowering you: documentation, access, code, and skills remain with you.
Your next step
Get to know the collective through your project.
Tell us about your challenge. We will quickly explain which skills to mobilize and how to proceed.