Composition with the building of CTModule

We are CTModule

Modularity and Flexibility to Improve Your Communication Is Our Passion

That’s Us – CTModule

We are a multinational Swiss software company with more than 20 years of experience in Unified Communication and Collaboration (UCC) solutions. We provide a unique application platform called Callisto for leading UCC manufacturers like Cisco Systems and other IP PBX producers.

Our mission is to help systems integrators and service providers improve their customers’ communications infrastructure for vertical markets – such as Enterprise Communications, Cruise, Hotel, Healthcare, and more.

We start where others stop. The wide range of application modules for each market catapults Callisto into a market-leading position. From on-prem to Cloud/UCaaS projects, we make it easy for companies worldwide to take their communications to the next level.

In an ever-changing market, you need a solid partner with a flexible and modular platform: Callisto.

Our USPs: All-in-one, Modular, Simple, Flexible, Tailor-made, Green-IT, and the lowest TCO on the market.

Our Vision

We facilitate and improve the communication of people in everyday life.

Our Philosophy

We do…

…everything to help you achieve your goals in telephony and unified communication and collaboration solutions quickly, purposefully, efficiently, successfully, and cost-effectively and simplify your communication processes.
Your complete satisfaction is our motivation!

We are…

…an entirely motivated and high-performance team with great potential and know-how in communication and internet technologies.
That makes us the ideal partner for you!

We want to…

…be the ones to provide you with the “missing piece” and enable you with our professional support to offer your customers the desired, best products and services. We do our best to be a successful team with you in this endeavor!

We work…

…in a close partnership with you and your customers as a business, integration, or technology partner. This results in a win-win-win situation for all parties involved!

We know…

…everything about communication and internet technologies, and we constantly educate ourselves.
That allows you to concentrate on your core business!

We use…

…the latest technologies and tools, and work to the highest quality to ensure that our joint solutions are state of the art and of the highest quality. That ensures you maximize your investment in your products and services and achieve high customer satisfaction.

We protect…

…your investment by being modular, using only open standards, providing tailor-made developments, and continuously developing our products.
This results in a long-lasting, friendly, and successful partnership with you and your customers.

Our Mission

We are a leading, sustainable, global partner in technical business communications by offering our products and services across all industries with high quality, modularity, flexibility, simplicity, and low resource requirements.

Customer Voices

  • Chris Flowers
    Sr. Project Manager Professional Services

    NTT and CTModule’s teams have collaborated and continue to work
    with end-client Royal Caribbean to implement a Unified Communications solution onboard Royal Caribbean’s fleet of cruise ships. The teams worked together to successfully implement a Cisco Call Manager solution that integrates CTModule’s software onboard. Past and current successful projects include Royal Caribbean’s new-build ship implementations as well as older ships that require refurbishment and custom legacy integrations utilizing CTModule’s software. The solution scales from projects that have included 150 endpoint installations to larger ships with over 5,000 endpoints integrated.

  • Klaus Vollmer
    Director Maritime Solutions
    Lufthansa Industry Solutions

    We appreciate CTModule as a reliable and highly professional partner, with whom we have a very good cooperation for many years. CTModule convinces with its stable, innovative platform, which we have already implemented several times very successfully and to the highest satisfaction of our customers from the cruise industry. We are looking forward to continuing our proven cooperation in the years to come.

  • PG

    Paul Goldbeck
    Director IT / QM

    Callisto Cruise from CTModule is one of the most reliable systems on board. In the luxury segment of the EUROPA, not only the product, but also the support service has to be exceptional. This is 100% guaranteed with CTModule. As a Application Platform, Callisto Cruise takes over Communication and Guest Interaction tasks at EUROPA. In a partnership Hapag-Lloyd Cruises and CTModule, are constantly working on current topics and looking for new, innovative guest solutions and process simplifications. Overall, the use of Callisto Cruise at the EUROPA gives for Guests, Hapag-Lloyd Cruises and CTModule a WIN-WIN-WIN relationship.

  • PB

    Patrick Berg
    Strategic Partner Manager
    POST Luxembourg

    Working with CTModule allowed us to create unique selling points with respect to Cisco’s UCME solution. The rich feature set provided via Callisto Express made it easy for our customer to adhere to our services.
    All in all, working with a human-sized company enabled us to quickly react to market demands while being able to cope with all imaginable customer requirements. CT Module’s Callisto Express plays a major role in the successful proposal of our Managed Services portfolio.

  • CH

    Christian Heine
    Telekom Deutschland

    Our customers appreciate our UCC Premium offering with Callisto.
    All the functions they need are reliable and easy to use. New applications can be added automatically at any time from the large Callisto modules library. Security is very important to our customers. That’s why all components of the UCC Premium offering have been designed strictly in accordance with GDPR guidelines.

  • SB

    Stephan Biekötter
    Telekom Deutschland

    The Callisto applications work reliably and stable.
    Feature requests are developed, implemented and tested in close cooperation with CTModule. In addition to that, we very much appreciate the professional support which CTModule offers for us and our customers.

  • DW

    David Waltermann
    Telekom Deutschland

    Thanks to Callisto’s all-in-appliance concept, ease of installation, the
    platform’s minimal resource requirements, and DW’s intelligent update/upgrade method, our operations team is saving significant time and costs.

Working with CTModule’s Tech Team

Shaping your future successfully with CTModule!

A company is the coordinated interaction of people who collectively focus on success in the market. Our employees – or rather, we – are CTModule and firmly believe that as a team, and in cooperation with our partners, we are heading towards a successful future. Join our development team and share in this success! Work with us on our leading product for companies in various industries!

We are looking for a Java Software Developer with several years of experience, ideally in the development of telecommunications software. 

Open Positions:

Software Engineer ⌈M/F⌋

We are seeking someone who:

• Is a strong team player
• Is versatile and flexible
• Is customer-oriented and competent
• Is dedicated and contributes to achieving jointly set goals within established time lines
• Has experience in programming server-based and web applications
• Has expertise in Java, HTML, CSS, JavaScript, and SQL
• Has excellent verbal and written English skills

We offer:

• A pleasant and flexible working environment
• Full-time or part-time positions
• Access to state-of-the-art technology in an attractive industry
• Modern working conditions and infrastructure
• Opportunities for professional growth and development
• Responsibility and autonomy
• Work location: Belp, Switzerland or Niš (Serbia)

Your next step:

We look forward to receiving your application documents! If you have any questions, feel free to let us know.


Request Your Free Consul­tation and Demo

We are happy to assist you

Phone: +41 31 531 11 11