I worked at a startup in the intersection of social media and advertising, and the tech was indeed quite interesting. I built the core of a system that ended up

I worked at a startup in the intersection of social media and advertising, and the tech was indeed quite interesting. I built the core of a system that ended up storing hundreds of millions of records, with 24/7 data ingestion of tens of thousands of records per second. This was scale that I had never worked with before, and I learned a lot. At the point in time I joined that company, I was explicitly looking for a job with interesting technical challenges. However, over the course of a couple of years, the tech mattered less and less, and the human component mattered more and more. I quit the job to get out of the industry. I'm still not sure how to feel about my tenure there. I grew as an engineer and team lead, but I question if I made the world a little worse by helping companies improve their targeting abilities in social media.