In the law firmsJenner & Block LLP added Julie J. Olenn as a partner in the private wealth practice.She advises high-net-worth clients on wealth transfer matters with a particular focus on estate, gift and generation-skipping transfer tax issues.• Harrity & Harrity LLP added Robin Seunghyun O as an associate.He focuses on electrical and computer technologies, including telecommunications, computer hardware and software, telematics, data analytics, networking devices, medical devices and business methods …