First and foremost, a community

We are a team, a community, a group of people with a common goal: to grow and expand our business. Find out what drives us on and what makes Alter Solutions, now part of the act digital group, a thriving and fast growing Enterprise.

Our mission

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We are a team, a community, a collective … with a common goal: to grow and grow our business together.


Moreover, we are convinced that sustainable growth is possible within ESNs. This is why we work, every day, to reconcile expertise, commercial development, quality of human relations while limiting our environmental impact.

Our History

The beginning of the adventure
The founding of ALTER SOLUTIONS originated with Louis and Mathieu in a small office in Versailles. The premises quickly outgrew their space, as did the team, capitalising on the exceptional and historic working environment hosted by Versailles.
Our Digital business unit
Our digital activities continued to gather momentum, especially in IT development. The challenges and implications associated with the digital transformation of businesses were on the rise, which is why this business unit was created.
Our Cyber business unit
Aware of the risks arising from this digital transformation and fascinated by defensive security, it was an obvious choice to create this business unit. It quickly gained momentum in France.
A European aspiration...
Our European adventure kicked off with the opening of two subsidiaries: ALTER SOLUTIONS Portugal, with an office in Lisbon, and ALTER SOLUTIONS Benelux, with an office in Brussels. At the same time, a Nearshore Development Center was created at our facilities in Portugal.
...that gathered pace
We pursued our European expansion with the inauguration of offices in Düsseldorf, Germany. At the same time, a Nearshore Development Centre was set up at our premises in Portugal.
Growth in Portugal
To be even more accessible for our customers, we opened a new office in the North of Portugal, in Oporto.
Proud to be Europeans!
This time, we set out to conquer Warsaw with ALTER SOLUTIONS Polska and Marta’s teams. And we set up new offices in Germany and Portugal.
New offices?
Absolutely! First of all, in France, where we are joining the Cyber Campus. Then in Spain with the inauguration of ALTER SOLUTIONS España. We will reveal our future location very soon...
Part of the act digital group
In 2022 Alter Solutions became part of the act digital group, a digital consulting company with more than 20 years of experience, located in America.

Meet our Board Members

Artboard 1-3
Louis Vachette
Mathieu Prulhiere
Group Managing Director
Thibaut Charmeil
Thibaut Charmeil
Strategy and Development Chief Officer

Alter Solutions Group in 2021

employees compose our amazing team
in turnover achieved at year-end
offices to cover the breadth of Europe
clients place their trust in us

act digital group in 2021

Turnover achieved at year-end

act digital group over the next 3 years

Countries / Locations

Our values



Specialising and striving for excellence


Innovate and adapt in all situations


Engaging and sharing information


Embracing and promoting diversity


Anticipate the challenges of tomorrow

Find out what matters the most to us

Join us

As an IT Services Company, our duty is to provide the best solution to our clients worldwide by analysing the match between their requirements and the skills and aspirations of our employees.

Hence, one of our primary incentives is to provide a fulfilling experience for everyone. When you join us, you become part of this dedicated community of people with such diverse personalities who contribute to making the ALTER SOLUTIONS adventure more rewarding every day.

Engaging as a company and an individual

At ALTER SOLUTIONS, we believe in the strength of the community. Anyone, regardless of their position, can participate in developing their role, their profession, the projects and the company’s impact.

We are also very mindful of the environmental and social issues that are at stake. For this reason, we are pursuing a proactive and ambitious CSR policy to rise to the challenges of tomorrow.