[baq]

Programming is like 20% of senior+ software engineer time, on a good day. The rest is spent all sorts of communicating - emails, presentations, specs, docs, figuring out incidents, in general trying to make sure the team is building what should be built - or efforts which support the business and/or the team, like fixing or optimising CI/CD, monitoring, hiring, reviewing backlogs (note plural), mentoring juniors, helping out sales or support with customer issues, working with support of your service providers, etc. This is especially true in big orgs with many teams, in smaller ones you might see a bigger share of pure coding-related work depending on a week... or coding overtime because there simply isn't enough hours in a day to open the IDE normally and these guys still like to code something every now and then.

Computer sciency stuff is maybe 1% on a good year (obviously there will be exceptions depending on the products you're building).