I conduct software development projects starting with pinning down the architecture and the design, continuing with the implementation leading eventually to the testing phase. Analysis is performed by pursuing a use case approach which subsequently leads to the design according to object oriented methods with UML. In addition to this I also conduct end-to-end systems integration for distributed system, mostly in telephony, think of IP Multimedia Subsystems (IMS), for instance. This is usually based on technical specifications as issued by ITU or ETSI and comprises a range of protocols from TCP/IP, SIP, SDP, RTP and Diameter. The work is performed applying tools like Rational Rose, Enterprise Architect or MKS, for instance.