Systems developer at TeliaSonera Sweden

During my time at TeliaSonera I mostly worked with developing WWW- and WAP sites and publishing platforms. Working with platforms limited the choice of programming languages (mainly Java and C#) and included a lot of system configuration work. Securely and reliably integrating data from a lot of support systems into the different platforms posed a great challenge. I also tutored an undergraduate student, did feasibility studies and evaluated new technologies and products.

Some examples of work I've been involved in:

• Developing WWW- and WAP sites on a platform based on Oracle iAS
  In the platform I, among other things, developed cluster-wide transaction support using JTA, extended the authentication- and authorization framework to allow roles and personalization, and developed several integrations to support systems. I also worked with dynamic WWW- and WAP content using JSP, Servlets, and the Oracle-internal service architecture. Some examples of sites that ran on the platform:
  • www.halebop.se and wap.halebop.se. Website and WAP portal for self-service of pre-paid mobile telephony accounts and company presentation.
  • Telia Go! and Telia SurfPort. WAP portal for Telia customers. Most of the contents were supplied by third-party providers through different types of interfaces.
• Developing WWW sites on a Telia-proprietary platform based on Weblogic WLS
  I participated in system design, designed and developed solutions for authentication and authorization, did integrations to support systems (webservice clients and direct connections), dynamic WWW-content using JSP, Spring WebFlow, and the proprietary API of the platform. Some examples of sites that I contributed to:
  • halebop.se. Website for self-service and company presentation.
  • Telia.se. Website for self-service and company presentation.
  • Managed Service portals for Stocholms Stad and Apoteket. Personalized website for managing telephony and IT.
• Developing WWW sites and Web services based on .Net and MS IIS
  Design and development of solutions for information management and short-lived websites. The programming language used was C# in VisualStudio 2005 and 2008 IDEs. I used Crystal Reports and Microsoft Reporting to generate PDF and other non-HTML documents and MS SQL Server for databases. Integration with support systems through Microsoft APIs, web services or proprietary interfaces. Some examples:
  • Telia Fördel. A webshop plus a ordering-interface for the Telia shops in the customer loyalization programme. Two websites and a group of scheduled jobs accessing a single DB required careful transaction management. Focus on security and customer experience.
  • TCADAdmin. A self-service portal for administration of users and groups in an MS Active Directory. Used impersonation and Kerberos for AAA.
  • WebStat. A web for publishers to help in analyzing visitor statistics and creating reports over different time-scopes. Data mining, complex stored procedures and sequences of database queries. Many presentation options and reporting capabilities.
  • MobileInfo. A web and a web service for browsing, searching and annotating capability information for mobile terminals. The data was collected by a J2ME application and sent to the web via a proprietary protocol over HTTP. Main challenges was; parsing- and grouping data for efficient searching and export, and building a secure web service using WCF.

Maintained by Tobias Öbrink