Allen Shim joined Slack in 2014 as employee number 20. As the startup grew, so did Shim's role.
Once senior vice president of finance and operations, Shim was promoted to CFO in January 2018 in a move which Slack CEO Stewart Butterfield made clear was a big step in the company's next phase of growth.
At the time of his promotion, CEO Stewart Butterfield called Shim "a trusted advisor" and his "right hand from the earliest day."
"Introducing the role of CFO is a natural evolution that levels up our capabilities and positions us for scalable, long term success," Butterfield said at the time. "These changes show in our results and our readiness to take advantage of the opportunity ahead."
Before joining Slack, Shim spent five years running finance at a television advertising metrics company called YuMe. Before that he worked at Yahoo in business operations.