Meet our team
Frédéric Vanholder Sales Manager
Isaline Mortier Head of Sales and Marketing
Yves Deffo Customer Care Coordinator
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Mathieu Derouck Head of Customer Operation
Chun Man Field Engineer
Antoine Cavelier Lead IT Consultant
Frédéric Vanholder Sales Manager
Before joining Mixvoip 10 years ago, I worked in IT support, gaining hands-on experience with network management and customer solutions. My time in a fast-paced startup taught me adaptability and teamwork, skills that became essential in my role at Mixvoip. Joining the company marked the start of a rewarding journey where I could grow and contribute to impactful projects in telecommunications.
Your job theme song?
My job theme song would be 'Don’t Stop Me Now' by Queen. It perfectly captures the energy and drive I bring to every deal – unstoppable, dynamic, and ready to make things happen!
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Isaline Mortier Head of Sales and Marketing
Before becoming a part of the MIXVOIP team, I was the Personal Assistant in the real estate world. Before that, I navigated the corporate landscape as a Senior Account Manager and my journey also included a chapter as the Marketing Manager. Outside of work, my passion is exploring the world. My passport is filled with stories from captivating destinations like Reunion Island, Morocco, the picturesque landscapes of Normandy, the enchanting allure of Corsica, the exotic beauty of Indonesia, and the United States.
A secret office snack?
A stash of almonds and dark chocolate squares for a quick energy boost
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Yves Deffo Customer Care Coordinator
Before joining Mixvoip 5 years ago, I worked as a team leader in a busy call center, where I managed a group of agents handling customer inquiries across multiple industries. This role taught me the importance of clear communication, patience, and finding effective solutions under pressure. Since joining Mixvoip as a Customer Care Coordinator, I’ve focused on streamlining processes, mentoring team members, and ensuring every customer interaction reflects our commitment to excellence. Balancing efficiency with a personal touch, I take pride in creating positive experiences for both customers and colleagues.
Who movie star you are as a coworker?
Ryan Reynolds – witty and keeps the mood light even in the busiest times.
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Mathieu Derouck Head of Customer Operation
I was born in Paris and spent my formative years there until the age of seven, after which I moved with my family to Luxembourg where I completed my education.
During my school years, I actively played football, both as a player and later as a trainer.
Outside of work, I enjoy cooking and embarking on long hikes.
Your job theme song?
“Eye of the Tiger” by Survivor – for powering through tough projects.
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Chun Man Field Engineer
Before joining Mixvoip 8 years ago, I was a recent graduate with a passion for technology and problem-solving. Starting as a junior technician, I quickly immersed myself in the world of telecommunications and learned from a team of experienced professionals. Those early days were challenging but incredibly rewarding, setting the foundation for my career.
Your secret office snack?
Mini packets of popcorn for those afternoon munchies.
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Antoine Cavelier Lead IT Consultant
Before joining Mixvoip 3 years ago, I was an IT consultant specializing in optimizing networks for small businesses. In that role, I worked closely with clients to identify inefficiencies, improve system performance, and ensure secure operations. This hands-on experience allowed me to develop a strong foundation in network management and customer-focused solutions. Since joining Mixvoip, I’ve applied these skills to enhance our IT infrastructure, implement innovative technologies, and support the company’s rapid growth.
If you were an animated caracter, who would you be ?
If I were an animated character, I’d be Buzz Lightyear from Toy Story. He’s determined, optimistic, and always aiming for infinity and beyond.
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