AI coworker startup Viktor raises $75M from Accel for Slack, Teams integration

A Warsaw- and Munich-based startup founded by former Meta engineers has secured $75 million in Series A funding led by Accel, just ten weeks after achieving $15 million in annualized recurring revenue. Viktor, which builds AI coworker agents that integrate directly with Slack and Microsoft Teams, was created by Peter Albert and Fryderyk Wiatrowski, both of whom previously worked on engineering teams at Meta.

The company’s angel investors read like a directory of elite software founders from both Europe and the United States, signaling strong confidence in its product and trajectory. Viktor’s AI agents are designed to function as collaborative teammates within existing workplace communication platforms, handling tasks, answering queries, and automating workflows without requiring users to leave their messaging apps.

The rapid revenue growth underscores the demand for AI-powered productivity tools that embed seamlessly into daily workflows. Rather than building a standalone interface, Viktor’s approach keeps users inside Slack or Teams, where they already spend most of their time. This integration strategy appears to be resonating with businesses seeking practical AI adoption without disrupting established habits.

With the new capital, Viktor plans to expand its engineering team, accelerate product development, and scale its go-to-market operations across Europe and North America. The funding round marks one of the largest early-stage raises in the European AI sector this year, reflecting investor appetite for enterprise AI solutions that deliver measurable returns quickly.