Customer success project coordinator

About the role

We are looking for a customer success project coordinator to join Mixvoip’s customer success team, the people who make sure everything works smoothly for our customers.

You will be at the center of customer projects, acting as the main point of contact between customers, sales, technical teams, and suppliers.

Your role is to ensure that services are delivered correctly, on time, and in line with customer expectations.

Customer success at Mixvoip is not just about support, it is about ownership, coordination, and building long-term trust with our customers.

What customer success does

Customer success is Mixvoip’s heartbeat. They take a signed quote, whether it’s one SIM card or a 1M € rollout, and make it happen.

They kick off projects with sales, bring the right experts together, coordinate technicians, manage planning, handle all communication with the customer, order hardware and licenses, and make sure everything works when it should.

They even do the training, check billing, and follow up after delivery.

This team knows everyone and everything that’s happening: Roadmaps, new products, customer pains, internal wins.

They’re the reason customers stay with us. Some of our products have few unique selling points compared to competitors.

So who makes the difference? Who makes us stand out? Our customer success team.

Key responsibilities and tasks

1. Handle customer projects from A-Z.
2. Master KYC checks and validate required information (company registration, ID, SEPA, etc.).
3. Coordinate with sales, technical, and provisioning teams to ensure smooth project execution.
4. Check site surveys, technical reports, and ensure hardware availability from suppliers.
5. Configure and validate SIP Trunks, and our Voxbi cloud PBX.
6. Manage number porting and creation for fixed and mobile lines.
7. Launch and monitor porting requests, internet orders, and service migrations.
8. Schedule technician interventions and coordinate installation dates with customers.
9. Communicate proactively with clients and send confirmations.
10. Handle inbound customer calls.
11. Validate and process supplier invoices.
12. Review quotes and sales emails to verify project type, setup costs, and customer documentation.
13. Manage hardware logistics: ordering, delivery, stock verification, and shipping details.
14. Bill your own projects when done.

What do we need from you?

1. Excellent communication skills in English and French (German or Luxembourgish are strong assets)
2. Curiosity and willingness to learn about the B2B ICT market, services, customers, and products
3. A passion for AI tools, especially for creating videos, images, and presentations.
4. A passion for helping people and ensuring customer satisfaction through proactive follow-ups.
5. Strong ability to build trust and long-term relationships with business clients.
6. Comfortable handling customer inquiries via phone, email, and ticketing systems (Zammad).
7. Able to coordinate with technical, sales, and provisioning teams to resolve issues quickly.
8. Organized and structured approach to manage multiple customer projects simultaneously.
9. Confidence to guide customers through setup steps and explain Mixvoip products
10. Willingness to take ownership of projects from start to finish and follow up until completion.
11. Experience with Notion is a plus.
12. Flexibility to occasionally handle urgent customer requests outside regular hours (with proper compensation).

A new way to apply: Join Mixvoip’s success story

Join Mixvoip and you won’t just be connecting businesses to high-speed internet, fiber, satellite, phone, or mobile networks, you’ll be connecting people, forging relationships, and making a real difference in our story.

So, if you’re prepared to embark on an engaging journey and play a pivotal role in Mixvoip’s saga, here’s an unconventional route to apply

We invite you to record a brief presentation video with your smartphone. Share why you’re drawn to this role or pose any questions or doubts you might have. It’s about keeping the conversation open and engaging! Please remember to attach your CV in PDF format too.

Instead of a conventional motivational letter, we’d like you to employ an AI of your choice. This not only mirrors our technology-focused approach, but it also allows you to showcase your adaptability to new tools. It’s less about the letter, more about your interaction with AI that we’re keen on.

PS: Want to know who you’ll be journeying with? Meet Mathieu Derouck

I’m 32 and passionate about making things work efficiently, whether it’s a telecom setup or a complex customer project. With experience in customer success and operations, I value structure, clarity, and teamwork to deliver meaningful results. I focus on ensuring every customer journey runs smoothly and transparently, from installation to daily support. Collaboration motivates me. I enjoy solving challenges together and creating processes that make life easier for both customers and colleagues. Outside of work, I love cooking and going on long hikes to recharge, stay creative, and keep a clear mind for the next challenge.