San Diego-based productivity software developer ClickUp said this week that it is expanding in San Diego. According to the company, it is expanding in DivcoWest's DiamondView Tower. The company said the expansion comes after it doubled its workforce last year and plans to double headcount again over the next year. The company says it will take two full floors in the tower, and also will gain signage over Petco Park. ClickUp is headed by CEO and co-founder Zeb Evans; Evans said in a statement that the company was outgrowing its old office space even before the pandemic started.