I've been a software engineer for almost 8 years, with some previous experience in product management as well. To broaden my horizons, I worked for companies of all sizes, from small startups to multi-national corporations, and spent some time in one of the big-3 consultancy firms as well.
I put a strong focus on architecture, quality, tests/well-typed codebases, and clean code. My usual modus operandi is to involve stakeholders, listen to my co-workers, radically collaborate, and focus on the value we can deliver to the customer. (It's a business after all.)