I worked for Stryker last summer as an R&D intern on the Foot & Ankle team, and it is a matrix organization. My team consisted of two engineers leading the design of the project, and we worked closely with many other departments, such as quality, testing, advanced operations, additive engineering, marketing, etc. Our project had at least one person as a resource from these respective teams based off the skill set required. Some of these employees were also working on multiple projects given by their own functional manager, and some of them were only working on our project.