Meet our team
CEO
Chief Information Officer
Head of Sales and Marketing
Chief Technology Officer
Head of Customer Operation
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Sales Manager
Lead Voice Backbone and Regulation Engineer
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Customer Care Coordinator
Chief Research Officer
Lead CRM Developer
Channel Sales Representative
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Lead IT Consultant
Lead Cloud PBX Engineer
Lead Customer Relations
System Administrator Specialist
Field Technician
Developer
Lead Financial Analyst
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Product owner
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Product owner
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I founded Mixvoip in 2008 at the age of 26. Back then, my biggest strength was my naivety—I knew nothing about phone systems, business, accounting, sales... but I was passionate about Linux and open-source. I could code, and I was programming every day on our cloud PBX solution. Funny enough, our developers now think my code is bad and outdated… but hey, it got the ball rolling!
I tend to get bored with repetitive tasks, so I’m incredibly grateful that Mixvoip grew from a one-man show to a company with multiple departments and offices across different countries. This journey pushed me to learn beyond coding—accounting, legal, marketing, team management, and, most importantly, how to stay relevant and innovative.
I’m really proud of the team and culture we’ve built at Mixvoip. It’s a place where learning never stops, and that’s what keeps things exciting.
If you could have any animal as an office mascot, what would you pick?
Penguins are all about teamwork and communication, always sticking together and coordinating in their groups. They’re also known for their loyalty, often forming lifelong bonds.
And by the way, if you’re not a great artist, a penguin is pretty easy to draw!
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As the CIO and co-founder of Mixvoip, I have many years of experience in the telecommunications industry. I am jointly responsible for the management and strategic direction of the company. Additionally, I coordinate the teams in Belgium and Germany to ensure efficient processes and optimal results. I place great importance on close collaboration, clear communication, and continuous improvement to meet the ever-evolving demands of the industry.
If your workday were a movie, what genre would it be?
“Mission: Impossible" meets "The Transporter" with a touch of "The Social Network".
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Before joining the Mixvoip team, I honed my expertise in sales and marketing at Proximus. As a Senior Account Manager, I managed key corporate clients in the "Banks & Insurance" sector, driving growth and fostering long-term partnerships. Prior to that, I took on the role of Marketing Manager, where I led strategic campaigns and initiatives to enhance brand visibility and market positioning. Beyond the office, I channel my creativity into travel and design. I thrive on discovering new places – from the vibrant culture of Italy to the stunning landscapes of La Reunion and the U.S. I also have a passion for interior decorating, often transforming flea market finds into unique statement pieces.
A secret office snack?
A mix of crunchy granola and refreshing mint candies – the perfect combo to keep me energized and focused throughout the day!
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I'm Marcin Rzeczkowski, CTO at Mixvoip. I joined the company when it was just a small team and have grown alongside it into the dynamic organization it is today. Having been involved in many aspects of the company’s evolution, I’ve gained a deep understanding of our technical operations and work closely with multiple teams to ensure everything runs reliably and efficiently.
If you could have any animal as an office mascot, what would you pick?
A mixed-breed dog would be the perfect office mascot. As someone who has two mixed-breed dogs, I see them as symbols of loyalty, adaptability, and individuality—qualities that reflect the diverse and collaborative spirit of our team at Mixvoip.
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I joined Mixvoip in 2019, and it’s been an incredible journey of learning and growth. Along the way, I’ve had the chance to meet amazing people who’ve inspired me, both inside and outside the company. For me, it’s all about ensuring our customers feel truly valued and unique, which wouldn’t be possible without the energy and dedication of the fantastic team I’m lucky to work with.
If you had to choose one superpower for your job, what would it be?
If I had to pick, I’d say the ability to instantly understand and solve any problem, like a super brain that could analyze stats, fix tools, or resolve customer issues in the blink of an eye.
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I am Frédéric Vanholder, an experienced professional with over 25 years of expertise in business development, project management, and information technology. Currently, I hold the position of Sales Manager in partnership with Isaline Mortier, in addition to my role as Senior Sales. My responsibilities include business development and supporting clients with their specific technological needs.
I hold a degree in applied economic sciences, with a specialization in marketing, obtained from the Facultés Universitaires Catholiques de Mons. I have also completed continuing education in telecommunications networks, project management, and sales techniques, including the Solution Selling program by Sales Performance International.
Fluent in French and Dutch, I also have a good command of English, German, and Luxembourgish. Outside of work, I am passionate about sailing and diving, activities that allow me to recharge and maintain a balance between my professional and personal life.
A secret office snack?
The "Vanholder aux pommes"
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Working at Mixvoip since nearly 10 years, I am the lead of the Voice Backbone team. Maintaining the core voice infrastructure, giving support to our clients and checking regulatory questions is my daily job.
If you had to choose one superpower for your job, what would it be?
Telepathy would help me to transfer my ideas into code and to answer all the upcoming questions.
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Empathetic and caring, I’m passionate about supporting others and creating meaningful connections. I focus on understanding people’s needs and offering the right care to help them feel supported and valued.
If you had to choose one superpower for your job, what would it be?
If I had to choose one superpower for my job, it would be the ability to instantly understand and anticipate people's needs. This way, I could proactively provide solutions, ensure everyone feels heard and valued, and create seamless, personalized experiences every time.
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Involved in the field of software engineering for the last 20 years. Defended PhD from University of Stuttgart on the subject of distributed software architecture. Currently being active as a hands-on innovation explorer (aka CRO) and leading a team of software engineers at Mixvoip who develop Voxbi client applications and core AI backend services.
Your job theme song?
If I have to imagine a tune or theme that can be heard while being locked-in on a specific task, that would be certainly Jean-Michel Jarre's Equinoxe Part 5.
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When I started at Mixvoip in July 2012, the company was just a small startup - and so was I, fresh out of school and eager to dive into the tech world. Back then, being a startup meant wearing multiple hats: one day I'd be doing on-site installations, the next troubleshooting systems, then managing stock or working on billing processes. It was chaotic, intense, and incredibly formative.
As a full stack developer, I've grown alongside the company. What began as a scrappy, all-hands-on-deck environment has transformed into a structured organization with specialized departments. But those early days taught me something invaluable - understanding a business isn't just about writing code, it's about understanding every gear in the machine.
Now, I lead a small team focused on CRM and ERP projects. Being the most senior employee gives me a unique perspective. I've seen Mixvoip evolve from a handful of passionate people to a mature tech company, and I've been instrumental in that journey. My deep institutional knowledge allows me to develop internal systems that aren't just technically sound, but truly aligned with how we work.
My professional journey has been less about climbing a corporate ladder and more about growing roots - deep, interconnected roots that help our technological ecosystem thrive.
If you were an animated character, who would you be?
Much like Master Roshi, the legendary martial arts instructor from Dragon Ball, I find myself in a role of mentorship and guidance for aspiring developers. Just as Roshi trained young martial artists like Goku and Krillin, I take junior developers under my wing, nurturing their skills and helping them grow into competent professionals.
Similar to how Roshi's students eventually become powerful fighters in their own right, the junior developers I train develop the skills and confidence to tackle new challenges and move on to different projects and systems within our company. This parallel extends to the way Roshi's teachings form the foundation for his students' future growth, much like how the knowledge and experience I impart serve as a springboard for my mentees' careers.
While I may not possess Roshi's centuries of experience or ability to fire energy beams, I do share his commitment to passing on knowledge and watching my students surpass their own limitations. And just as Roshi finds satisfaction in seeing his pupils succeed, I take pride in witnessing the developers I've trained flourish in new roles and tackle complex projects with confidence.
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An ambitious salesperson with an entrepreneurial mindset, I lead our indirect sales team and make sure all our partners are happy.
I love finding new customers, discovering new technologies and meeting new people.
A secret office snack?
Rice biscuits
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As Head of IT at Mixvoip, I lead a team responsible for IT infrastructure, cybersecurity, and managed services. With extensive experience in system and network engineering, I specialize in designing and implementing secure, scalable solutions for businesses. Passionate about technology, I stay ahead of industry trends to ensure innovation and reliability. My role also includes team leadership, training, and strategic IT development to support business growth.
If you could have any animal as an office mascot, what would you pick?
I would pick a meerkat. In the IT world, we constantly monitor the horizon for potential threats, just like a meerkat standing watch for danger. Meerkats are agile, highly observant, and naturally curious, qualities that are essential in our field. Staying ahead of new technologies, keeping up with cybersecurity threats, and maintaining a culture of continuous learning are all crucial aspects of our work, and the meerkat embodies this spirit perfectly.
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I lead the Customer Relations team at Mixvoip, guiding a three person crew. My role centers on empowering the team, building strong relationships with both new and existing clients. I also work closely with our Technical Innovation Specialist and our CEO to create, shape, and refine product definitions, ensuring consistency and alignment across teams.
If you were an animated character, who would you be ?
I would be Dennosuke Uchimura from "Headhunted to Another World: From Salaryman to Big Four!" a character who navigates a new world with strategy, perseverance, and sharp decision-making. Just like in modern sales and customer service, in a world that’s constantly evolving, it’s about adapting, staying focused, growing every day, and helping both customers and my team find the best solutions.
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I’m currently the Team Leader for the System Administrators at Mixvoip, where I've been contributing since 2018. Over the years, I’ve progressed from a technical role to leading a skilled team dedicated to keeping our servers running smoothly 24/7. While our work often happens behind the scenes, we focus on ensuring the reliability and performance of the infrastructure that powers Mixvoip. I’m passionate about staying up-to-date with new technologies and enjoy working with complex systems, particularly clustered environments like storage systems and SANs. My team and I are always focused on improving and innovating to keep things running at their best.
Your job theme song?
Fu Manchu - Hell On Wheels
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I lead our technical team specializing in telecommunications and networking, ensuring the smooth operation of network infrastructures (fiber, copper, WiFi, PBX) through installation, configuration, and maintenance. I coordinate projects, oversee the quality of interventions, and support clients in Luxembourg, Belgium, and Germany.
If your workday were a movie, what genre would it be?
An action-comedy. Think Die Hard meets The Office. Between fixing issues like a tech ninja and managing the team like a sitcom dad, every day is a mix of chaos, laughs, and the occasional plot twist.
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Hello my name is Laures Christophe and I work nearly 10 years at Mixvoip. I am the Lead PBX Developer and I lead the PBX development team. We develop the next generation of our PBX solution as well support our current PBX system.
If you could have any animal as an office mascot, what would you pick?
Penguin - Penguins are smart and curious. Penguins work together to archive their goals. And I really like linux :P
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I am a Team Lead and Full-Stack Developer with 12 years of experience, specializing in solving complex business challenges through technology. With expertise in PHP, Laravel, Node.js, Python, and MySQL, I design scalable, high-performance solutions. Combining strong management skills with a problem-solving mindset, I optimize development processes to drive efficiency, innovation, and business growth.
If your workday were a movie, what genre would it be?
If my workday were a movie, it would be a **thriller with a mix of strategy and innovation**. Leading a team of seven developers, every day is a dynamic mix of solving complex business challenges, optimizing workflows, and ensuring high-performance solutions. There’s always a new problem to tackle, a critical decision to make, and the excitement of seeing innovative solutions come to life—making it both intense and rewarding!
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Administration Team Leader We oversee HR, Aftersales Billing, and Finance. My tasks revolve around a few key points: Finance related tasks, Budgets, Accounting, keep the banks happy...that’s my domain. When customers face payment issues or run into any finance-related challenges, I’m the one they turn to. If it’s about money, I’m the go-to person:)
If you could have any animal as an office mascot, what would you pick?
Dog - a Golden Retriever ;)
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I am the Product Owner of all our Voxbi softwares and services. I guide our engaged team of developers in crafting creative telecommunication solutions. We are geeks and we like innovation. At the same time we understand businesses need stable tools. We try our best to achieve a balance between both and we are very proud of Voxbi for simplifying daily operations with features like smart call routing, easy-to-use analytics, and seamless integration with tools teams already use. By focusing on delivering a reliable and intuitive communication platform, you ensure that companies can stay connected and productive, no matter where their work takes them.
Your job theme song?
Mission Impossible theme song
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I am passionate about the power of IT to help businesses reach their goals. I enjoy convincing both management and customers to support new ideas and work together on solutions. My approach combines technology and business thinking to motivate teams, develop strategies and achieve great results. I believe in training and mentoring to improve efficiency and build long-term customer loyalty. My balanced and confident communication helps me work well with both colleagues and clients. I am independent, reliable and flexible and always focused on delivering the best results.
Your job theme song?
"Happy" by Pharrell Williams
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As Germany Operations Lead at Mixvoip, I manage daily operations with a focus on healthcare solutions. I acquire customers, plan and implement projects, and coordinate collaboration with suppliers and partners. My focus is on delivering innovative telecommunications solutions for the healthcare sector and ensuring optimal support for our business customers in Germany.
If you were an animated character, who would you be?
If I were an animated character, I’d be Professor Oak from Pokémon—always exploring new technologies and solutions, guiding others with expertise, and staying curious about innovations, especially in the healthcare and telecommunications fields. Just like him, I enjoy connecting people, solving challenges, and ensuring everything runs smoothly in my domain!
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