Working for a technology startup can have its challenges. There are lots of insecurities associated with the business aspects of a startup, but it is certainly invigorating to work at the edge of what is possible in your chosen professional field. I do not think I have ever enjoyed a job so much. I am senior enough in my career to be given ownership of an element of the product we are developing that is critical to its success. It is a hard problem that I cannot solve on my own, but I have access to some very smart people to help me. I think one of the things I like best about being a senior engineer in this domain is that I know when I need help from someone else and I am not too insecure in my knowledge to ask for it. Who knows how it will turn out. My technology is not the only critical element of the system. Even if I succeed beyond my wildest expectations, the product could fail. All I know is that it is pretty wonderful to be at this point in my career and to not only love my work, but to be valued by my co-workers and management.