Sebastian Blum Deutsche Telekom & T-Venture Representative Sebastian Blum joined T-Venture in 1999, 2 years after the inception. T-Venture is the corporate venture capital arm of Deutsche Telekom group, that manages several VC funds on behalf of the strategic business units of Deutsche Telekom, which also includes T-Mobile. Since 2006, Sebastian is at T-Venture's U.S. subsidiary. telesoftvc