Halys designs and deploys telecom platforms for inter-operator roaming, SMS/MMS messaging, and 4G/5G mobile core networks, supporting public, private, and hybrid environments. We support operators, MVNOs, integrators, and private mobile network projects in delivering robust, secure, and interoperable telecom connectivity solutions. ▪️ Roaming & interconnection: SS7, GTP, and Diameter hubs for 2G/3G, 4G/LTE, and 5G (NSA/SA) network environments. ▪️ Messaging (SMS/MMS): SMSC/MMSC platforms for A2P/P2A traffic, international interconnection, and traffic security. ▪️ 4G/5G mobile core networks: EPC/5GC platforms for private or hybrid mobile networks, with observability and supervision. ▪️ Private & hybrid mobile networks: 4G/5G solutions for industrial environments, critical infrastructures, or temporary deployments, with interconnection to public networks when required. ▪️ Go-live & 24/7 support: platform commissioning, configuration assistance, use-case validation, and 24/7 technical support delivered by engineering teams. 💬 Let’s talk about your connectivity projects — our experts are happy to discuss.
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HALYS Questions
The HALYS annual revenue was $12.9 million in 2026.
Benoit Mathian is the CTO of HALYS.
18 people are employed at HALYS.
HALYS is based in Issy Les Moulineaux, France.
The NAICS codes for HALYS are [334, 33].
The SIC codes for HALYS are [36, 366].
Top HALYS Employees
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Benoit Mathian
CTO at HALYS
Paris, FR21 -
Gilles Deviercy
Chief Technology Officer at HALYS
Irving, TX, US1 -
Marc Lovighi
Managing Director at HALYS
Paris, FR21 -
Sebastien Cruaux
Head of Engineering at HALYS
Issy-les-Moulineaux, FR2 -
Hamdi Yahyaoui
Lead développeur at HALYS
Le Plessis-Robinson, FR1 -
Salma Boulahrouf
DevSecOp-Stage at HALYS
Villejuif, FR4 -
Thomas Soares
DevOps at HALYS
Ris-Orangis, FR
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