Jean Gottschalk

Jean Gottschalk

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CRE Debt Investment Fund Manager | Telecom Security Strategist
Las Vegas, Nevada, United States

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Résumé


Jobs verified_user 0% verified
  • The Telecom Defense Limited Company
    Founder & Chief Strategist
    The Telecom Defense Limited Company
    Apr 2016 - Current (10 years 1 month)
    The Telecom Defense Limited Company helps mobile network operators uncover their SS7, Diameter, VoLTE and GTP vulnerabilities by conducting remote and onsite scans for vulnerabilities such as geolocation, call or text message interception, financial and billing fraud and denial of service, and help formulate a plan to make the network secure from inside and outside attacks. I also assist operators in vendor selection and to conduct RFPs related to signaling vulnerability protection, as well as provide technical training to operators' technical staff and regulators.
  • Sophinvest
    Founder & Managing Partner
    Sophinvest
    Apr 2015 - Current (11 years 1 month)
    In 2015, I founded Sophinvest as a holding company for our family's income producing real estate assets, built on a core strategy: acquiring distressed residential and commercial properties in multiple states, making underperforming or overlooked assets reperform. An essential part of the strategy is to unlock significant value and embedded equity with each new acquisition, as we built out the entire portfolio without external capital partners other than traditional bank leverage. As the market for direct distressed assets has become increasingly competitive, we have strategically evolved our focus by acquiring non-performing commercial real estate (CRE) loans from banks and non-bank lenders, which provides a unique path to creating value
  • Telecom North America
    Founder & President
    Telecom North America
    Jun 2002 - Nov 2015 (13 years 6 months)
    Telecom North America (now TELNA) started as an interexchange carrier licensed and later became a spectrum-based mobile operator (MNO) in USA, and full member of the GSM Association. The company's goal is to reduce international roaming costs, by providing various services both to end-users and to the industry. The company's services and proprietary multi-IMSI technology are used in products sold to end users, resellers, MVNOs and MNOs worldwide.
  • C
    Founder & CEO
    COMPARATEL SA
    Jul 1999 - May 2002 (2 years 11 months)
    Founded this VC-backed company while still in college, which acts as a source of information and price comparison on the French telecommunications market for consumers, business and the industry
Education verified_user 0% verified
  • Université Évry ParisSaclay
    DESS, Finance, Entrepreneurship
    Université Évry ParisSaclay
    Jan 2001 - Dec 2001 (1 year)
  • Institut MinesTélécom Business School
    Diplome de Gestion, Management, Finance, Telecommunications
    Institut MinesTélécom Business School
    Jan 1998 - Dec 2001 (4 years)
    Former school of France Telecom / Orange for high level engineers and managers specialized in fixed and mobile telecommunications
  • Université Évry ParisSaclay
    Maitrise de Gestion, Finance, Economics
    Université Évry ParisSaclay
    Jan 1998 - Dec 2000 (3 years)
Projects (professional or personal) verified_user 0% verified
  • M
    Multi-IMSI roaming hub
    Jan 2013 - Nov 2015 (2 years 11 months)
    Came up with the concept for a multi-IMSI roaming hub, the first trading platform for IMSIs between multiple operators worldwide. Designed the architecture of the platform, wrote specifications, selected software vendors and SIM card vendors, signed up operators on multiple continents and promoted the concept by speaking at multiple industry conferences. Negotiated a channel partner agreement for distribution of the service by one of the main SCCP carriers.
Publications verified_user 0% verified
  • I
    Impact of Mobile Network SS7 Vulnerabilities on GSM-based IIoT Devices
    ICS Cyber Security Conference
    Oct 2017
    Conference presentation
  • M
    Emerging Business Models in Roaming: The Roaming Aggregator
    Mobile Roaming World Summit
    Nov 2013
    Conference presentation