Damien Gauthier coaching a group of experts in a workshop setting

You Master Your Field. Now Master the Room.

Damien Gauthier leading a communication coaching session
4.7 (288) avg. satisfaction
Clarity Presence Connection

I help experts and leaders deliver presentations that drive buy-in.

Because when the moment comes to speak in a boardroom, on stage, or in front of a client, your ideas should land with the impact they deserve.

TRUSTED BY EXPERTS AND TEAMS AT
BOBST TotalEnergies FIBA PMI Project Management Institute IIBA PwC SQLI ATscale TEDxLausanne EPFL UNIGE Nespresso Helen of Troy Vaudoise HEI-VD Geneva School of Diplomacy DatAfterwork SMP Ma thèse en 180 secondes HES-SO TEDxMartigny TPG Labster Human Centricity Startup Weekend

See what working with Impactful Speaking looks like.

More useful than any brochure. Watch this before you book: it'll show you the method, the people it's built for, and what it actually produces.

700+ Professionals trained
4.7 Avg. satisfaction
(288 responses)
25+ Years of practice
92% Client rehire
EN&FR Languages

Built for experts. Proven in boardrooms and on stage.

Whether you're coaching one leader, training a team, or learning at your own pace — the IS Method gives experts the communication edge they're missing.

Damien coaching an expert one-on-one in a workshop session
Individual · Coaching

Individual Coaching

For experts, founders, and leaders preparing a specific high-stakes presentation, or wanting to become more impactful communicators.

Explore coaching →
Group of professionals working together in a communication workshop
Teams · Workshops

Group Workshops & Masterclass

For teams, departments, and groups who need to build communication capability at scale, quickly and durably.

Explore Workshops →
The IS Method online course — self-paced for analytical minds
Corporate

Corporate Programs

For L&D managers, HR leaders, and companies who want to fast-track their employees into powerful communicators that brings results.

Explore corporate →

Do you prefer learning at your own pace?

The IS Method online course — self-paced for analytical minds
Online program

Impactful Speakers Lab (Online Program & Practice)

Self-paced communication program with bi-weekly live practice sessions. Presentation Clinics, guided small-group practice, and tactical feedback where professionals work on real presentations and communication challenges together. Designed for professionals who want to actively practice communication, not just study it.

Explore the course →

You have the knowledge, yet sometimes it does not come across.

Most experts experience the Curse of Knowledge: the gap between what's clear in our mind and what lands in the room. That gap is closable, if it has a structure.

"You prepared. It still came out wrong."

The preparation was there, but when the moment arrived, something else took the best of you.

"Your audience gets lost on complex slides."

You built a deck that covers everything. The audience is either lost or stuck in the details.

"Rehearsal feels like going in circles."

More rehearsal produced the same result. Repetition without method isn't the answer.

"You start dreading speaking altogether."

You know which conversations could change things, yet you find reasons to defer them.

Not Another Soft-Skills Course:
actionable frameworks rooted in practical techniques.

Communication is a technical skill. Like mathematics or engineering, it has rules, structure, and learnable levers. The IS Method gives you the map.

01

Clarity

Logos — the architecture of ideas

Build messages that are clear before they are clever. Every talk, pitch, and update has an underlying architecture. We make yours explicit.

Narrative arc McKinsey’s Pyramid Audience-Message fit
02

Presence

Ethos — the authority you project

Presence is not putting on a show. It is the alignment between your body, voice, and intention. Techniques, not talent.

Voice & Pace Stage presence Deliberate gestures Eye contact
03

Connection

Pathos — the resonance with your audience

Your audience's trust is not given. It is built through specificity, relevance, and a demonstration that you understand their world.

Audience engagement Storytelling Emotional logic

The Impactful Speaking Difference

Our difference
Traditional training
Impactful Speaking
Approach
Generic tips & best practices
Personalised structured method
Built for
General audiences
Expert minds and analytical thinkers
Timeframe
Big Bang without follow-up
Refresher sessions to anchor skills
Result
Temporary confidence boost
Durable, transferable skill
Delivery
In-person workshop only
Hybrid remote/on-site for adaptability

Built for when it truly matters: boards, clients, committees...

High-stakes presentations rarely happen on a conference stage. They happen in boardrooms, client meetings, investor pitches, or trade shows. Our approach focuses on actual professional settings. It makes you stand out on stage, but differentiates you even more at a board meeting.

"You won't sound like a TED speaker. You'll sound like the most prepared version of yourself."

BOBST experts presenting at Drupa 2024 trade show — the IS Method in action on the floor Trade show floor · Drupa 2024
Expert coaching session — preparation for a high-stakes presentation Expert coaching
TEDx Lausanne 2025 — speaker on stage coached by Impactful Speaking TEDx stage · Lausanne
Workshop participants working on communication exercises Team workshop
Damien Gauthier running a live communication workshop Masterclass · BOBST

For experts and leaders in the field

The IS Method adapts to where you are and what you need to communicate. Choose the profile that fits.

Damien Gauthier coaching a participant in a workshop
12+ Years
coaching
PhD in Mathematics Innovation Consultant Theater & Improv TEDx Coach

By someone who's been in the room like you.

Damien Gauthier is bridging two worlds: mathematician PhD from EPFL turned IT consultant and UX designer on one hand; professional actor, director, TEDx curator and speaker coach on the other.

He created the Impactful Speaking Method to fill the gap between public speaking and the business world, blending secrets from consulting, acting techniques, cognitive science, storytelling frameworks, and 12 years of corporate experience.

His focus is on public speaking as a strategic communication device, not as performance: structuring ideas to build a clear message, creating presence to build credibility, and delivering presentations that feel fully authentic.

Mathematics IT Consulting Theater & Improv TEDx Coaching UX Design Psychology Lean & Design Thinking
BOBST TotalEnergies FIBA PMI Project Management Institute IIBA PwC SQLI ATscale TEDxLausanne EPFL UNIGE Nespresso Helen of Troy Vaudoise HEI-VD Geneva School of Diplomacy DatAfterwork SMP Ma thèse en 180 secondes HES-SO TEDxMartigny TPG Labster Human Centricity Startup Weekend

Stories from the field.

The proof is in the work. Documented outcomes, real clients, measurable results.

BOBST experts presenting at Drupa 2024, the world's largest print trade show Manufacturing · Trade show

BOBST × Drupa 2024 — 64 Experts. 3 Days. 4.8/5.

Drupa is the most important commercial event in the print industry, held once every four years in Dusseldorf. BOBST needed 64 technical experts to present with confidence, clarity, and commercial impact on the booth floor. We built a hybrid program mixing remote training and coaching, live bootcamp in Switzerland and Italy and presence in Dusseldorf for three days before drupa's launch. The result: measurably prepared, measurably better.

64 experts trained 4.8/5 satisfaction 4x deals in 2 days Hybrid format
Read the full case study →
"I did many public speaking and communication courses, that's the first time I can actually take away something."

Jean-Raphael Guillaumin · Senior Project Manager · SQLI

“I was fearing having to present before that. Now I look forward to opportunities to talk.”

Benjamin CARRON · Technical Product Marketing Director · BOBST
One year after training

Your next high-stakes moment is closer than you think.

A 30-minute discovery call is the beginning. No sales, no empty promises: we figure out together whether there's a fit, and what working together could look like.