Ceragon Networks taps HarbourVest Partners Managing Director Ilan Rosen, Ceragon board member since July 2021, as its new chairman, succeeding Zohar Zisapel, who died May 19 ... Former Treasury Department attorney Colgate Selden and Alan Lindeke, former Change Home Mortgage general counsel, launch SeldenLindeke, new law firm focusing on federal and state regulatory and licensing specialties, including for tech clients ... Rivian Automotive names Carvana’s Alan Hoffman, former deputy chief of staff to then-Vice President Joe Biden, chief policy officer ... Next Net Media, holding company for various internet businesses, taps Marc Pickren, former adviser to identity verification company BlueCheck, as president ... Edge cloud platform Fastly names Check Point Software Technologies’ Peter Alexander, also ex-Harmonic, chief marketing officer, and Marshall Erwin, ex-Mozilla and former cybersecurity and counterterrorism adviser to Senate Homeland Security and Government Affairs Committee, chief information security officer; Fastly also promotes Karen Greenstein to general counsel ... Redwire, space infrastructure company, names former Collins Aerospace and NASA executive Allen Flynt senior vice president-space platforms and robotics ... Web3 investment company CoinFund taps TCG Crypto’s Dilveer Vahali as head-venture legal ... UserWay, digital accessibility solutions platform, promotes Shahar Amiel to vice president-growth.