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 In our long lasting Work in the OpenSource sector, we acquired special skills in different projects and environments. We want to higlight these skills here:
- Experience in communication provider projects, > 2 Mio user
- High availability for OpenLDAP on BDB with DRBD with more than 20 million users, mass provisioning
- Administration of more than 1000 computers using web services
- Real time processing of billing records
- Software development in the Linux kernel 2.4 and 2.6
- Debugging and development in the kernel environment
- Driver development for Dolphin D/DX-Interfaces
- High speed protocolls, e.g. Dolphin Supersockets
- High availability on Linux
- heartbeat 1/2
- Linux based loadbalancer
- DRBD and GFS filesystems
- VoIP
- SIP Programming
- Test of different user equipments and clients
- Implementation of SIP services (e.g. MWI, SMS-Send)
- Database optimization
- Optimization of the DB, access analysis (Indexing)
- Query optimization
- Adaption of OpenSource products in their source code
- QMAIL, COURIER
- OpenSER
- ipppd
- FreeRadius
- Special purpose database software Cumulus
- Module development
- customized adaptions
- Archiving software Presstore
- Connection to customer specific software
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