— Longtime Seattle-based tech leader Joseph Sirosh has left Amazon.
Sirosh was VP of Amazon Search and Alexa Shopping. He joined Amazon in 2022 after a stint at Compass, where he was chief technology officer. Sirosh was also previously a corporate vice president of AI at Microsoft, and spent nearly nine years at Amazon earlier in his career.
The Puget Sound Business Journal first reported Sirosh’s departure. An Amazon spokesperson confirmed that Sirosh has left the company but did not provide additional details.
Srikanth Thirumalai, who had the same title as Sirosh at Amazon, left the company in September and is now a vice president of engineering at Waymo.
— Seattle-based application security and delivery giant F5 added former Verizon Business CEO Tami Erwin to its board of directors. Erwin previously spent more than 35 years at Verizon. She’s also on the board of Aptiv, York Space Systems, and John Deere.
— Kristina Adamski, a former communications exec at Zillow Group, joined Autodesk as the company’s first vice president of global communications. Adamski spent more than three years at Zillow as its vice president of communications. She also previously worked at Tilray, Nissan, and Ford.
— Seattle-based water purification startup Membron named Wayne Byrne as chair of its board of directors. Byrne co-founded Method Capital, an investment firm that backs climate and sustainability companies, and is a venture partner at Burnt Island Ventures, an early-stage fund focused on the water sector.
