Randstad, a provider of HR services, agreed to acquire Cella, a staffing, managed solutions and consulting firm. Financial terms were not disclosed. "Growing this company has been an extremely rewarding venture, and we are incredibly proud of what we have built over the years. This partnership with Randstad allows us to leverage our shared scale and experience to reach the next level of our collective aspirations to become the recognized leader and partner of choice in creative, marketing, and digital solutions. We look forward to working together to build an even stronger future," Rob Ganjon, Cella President.