The timing of this couldn't have been more perfect as that's also right when I landed a role as the sole/lead developer for a profitable internet SaaS company. A lot of work to be done and nothing but a wide open greenfield to start tearing through.
There is absolutely no doubt in my mind that the effects that adderall has on my attention span and ability to churn through code is close to 2 to 3 times what my ability is without it. When I'm on adderall and focused on coding, I often find that I can see several steps ahead of where I am now and I cannot physically code fast enough to keep up with my mind. It feels like I can hold more variables in my head at once.
Sometimes, when I'm sober, I look at code that I programmed on adderall and find that my approach to solutions can be designed in completely different ways than I would have normally.
I never had a very reliable source of adderall, which meant that there were breaks in my use. This also kept my tolerance relatively low so I never had to take more than 5-10mg per day to feel the full effect. I noticed during the sober weeks in between that there is always a significant lull in motivation that first week before I feel entirely like myself again.
My story with adderall doesn't end well, though. Adderall can affect other areas of your life (like impulse control) and cause you to do things that aren't necessarily characteristic of your personality (especially when mixed with alcohol).
I'd be happy to share more if you'd like. This is a throwaway account for obvious reasons, and I setup a throwaway email address because this is an issue I've thought long and hard about. If you're interested, feel free to reach out (contact info on my profile). I'll check the email for one week.
In summary: the short term benefits of adderall are not worth the longterm inconsistency or effects on other areas of my life such as mood, sleep, and anxiety. At least not for me.