Expertise in Mainframe & Open

HH & S offers its Seniors Consultants expertise in both worlds of
  • Mainframe IBM --- z/OS MVS, z/VM, z/Linux ---
  • and Open --- UNIX, Linux, Windows, Java, Internet ---

Our characteristic is to have a wide computer culture, since we all started in the IBM mainframe world and followed the evolution of Minis and Micros systems. This broad view of different worlds gives us a very strong technical expertise to develop architectures of information systems.

Our technical knowledge, our expertise, responsiveness, efficiency of our services and performance of our achievements, whether in the areas of consulting, development, migration, technical support, the systems and networks administration as well as teaching, have allowed us to be known and appreciated by big companies IT services.



  • Audit
  • Design
  • Implementation, Configuration
  • Tuning


Databases & Middleware

  • DB2 z/OS, IMS, DB2 UDB,
  • Oracle, Informix, Sybase, PostGres, MySQL
  • MQ/Series, ESB, EAI, CICS, Tuxedo, ...

Networks & Télécoms

  • SNA (VTAM, APPC, LU6.2)
  • X.25 Transpac
  • Internet/Intranet/Extranet
    DNS, Proxy, DHCP, SNMP, Sendmail, Apache, TomCat, WebSphere, JSP, Java, Javascript, Php, e-Commerce, e-Payment
  • Lan Server Netbios
  • Novell NetWare
  • Sécurité
    Firewall, SSL, SSH, PGP, VPN, VPN
  • Serveurs Videotexte, Vocal, Pager