My genuine question - Is it possible to have ADHD and be a coder? It’s just that coding requires so much focussed attention over long periods. If you are enjoying a career as a coder I’m inclined to think either the ADHD is mild or treated very effectively? Or even that treated ADHD actually makes you better than the median somehow?
Now, that said, there is a new movie, Everything Everywhere All At Once, and if you take this title as a stand in for ADHD, maybe you can see that while this way of living can be overwhelming it also allows you to have a pretty good overview over systems and how their components interacts very fast. I think that's what many ADHD'ers are actually very good at, grokking code bases or the gist of things very quickly. Systems thinking in general. Also quick recall / association chains...
Also, on average, the higher your IQ, the later in your life your ADHD diagnosis will be (see this video on adult ADHD https://www.youtube.com/watch?v=dVDhYtQkuO8). Your other abilities can compensate somewhat for your ADHD. Also of course when battling this condition you will build many personal tools and habits that neuro-typical people will never have to do, so in that sense you also might have a leg up in certain situations.
I'd say professionally the biggest problem is not so much on a technical level, but more on an emotional / impulse control level. ADHD'ers can come off as brash, speaking their mind freely, not being able to just put that comment in when it's better to shut up.
A person with ADHD will have a tendency to get distracted from the task they're supposed to be working on, and will instead work on other things. That's not necessarily bad if those other tasks are important. Perhaps counter-intuitively, the lack of impulse control may even lead them to hyper-focus on a task... just maybe not the one they were assigned.
People without ADHD also get distracted, but they have the impulse control to better resist tempting distractions, and the memory to remember to return to their original task after unavoidable distractions.
My entire view of ADHD changed when I saw a video for parents of children with ADHD a few years back. This is one of my favourite HN comments of all time: https://news.ycombinator.com/item?id=17889156
It has way bigger consequences outside of work for me. Things which you are very passionate about are easier to focus on than things you are not, regardless of AD(H)D.