Pros
Testlio is the third tech start-up I've worked at, and I really enjoy the flat, collaborative and grow-minded culture without having to worry about the company's financial health which I used to at other start-ups. It feels like a place I can grow with. Other pros include the trusting culture, work time and workplace flexibility in US, and the fact that Testlio is undergoing some nice growth which creates new, exciting challenges and projects.
Cons
This is universal and not specific to Testlio - I'm working at screens so need to take an eye and brain break from time to time. Also universal - for people who aren't used to working in a fast-paced environment, wearing different hats at once, dealing with ambiguity (not everything is defined), and adapting to/advocating for org changes, working here may not be easy. This works well with me though.