Since 1997 I work for OMNITEL, Lithuania. It is the largest mobile operator in the Baltic States. Main technologies that I work with:
- Gembase 4GL for OpenVMS - for database applications.
- Java - mainly for integrational purposes: Gembase/OpenVMS combination with Java using JNI, WebServices, but not limited to.
- SQL - integrational projects between various databases management systems.
As IT person, I could also do something in C++, HTML, could give you an opinion on Java server-side technologies, have expierence with PGP (e.g. GnuPG) while integrating it into legacy systems. Due to economical background I am able to understand business needs beyond IT specifics. Since my work focus currently shifts from programming to creating software architecture, such educational background helps a lot.
Some relatively large or important projects that I worked with:
2004 - nowadays: Lead developer for companies rating system.
2008: flexible rating of mobile data services for Prepaid subscribers. Includes self-provisioning of different packages.
2008: Unlimited SMS for PostPaid subscribers. Includes self-provisioning of different packages.
2007: rating for EU regulation regarding roaming tariffs
2006: single APN - based rating for data services.
2006: improved tiered rating.
2006: improved rating of promotions.
2005: rewrite of the companies billing system.
2005: adoption of TAP3.10 standart.
2003 - 2004: Java-based tools for uniform way to manage file transfers between OpenVMS and other systems.
2003: Electronic Bill (service partners: AB SEB Vilniaus Bankas).
2003 - 2004: Invoice sending via E-mail.
1997 - 2005: Service barring for debtors.
1998 - 2005: Debtor warning system, used to warn debtors prior to service barring.
1999 - 2005: Bank transfer management.
1999 - 2005: Payment management.
1999 - 2005: Direct Debit system.
1999 - 2006: Revenue sharing system.
1998 - 2001: Prepaid subscriber management system, used for statistical purposes.
1999 - 2001: Invoice sending via SMS
Note: Some projects went through several versions & upgrades, so I gave dates of the first and the last versions that I worked with.