Elon Musk’s Twitter laid off dozens of employees Saturday in what is at least the eighth round of job cuts since Musk took over the social network in late October. The cuts aim to offset a plunge in revenue following Musk’s takeover and further whittle down a staff that had shrunk by at least 70% to roughly 2,000.

Twitter’s latest cuts impacted multiple engineering teams, including those supporting advertising technology, the main Twitter app as well as technical infrastructure to keep Twitter’s systems up and running, according to people with direct knowledge.