I was first employee and only software engineer for 12 months at a startup working on increasing large scale solar power penetration in electricity networks glo

I was first employee and only software engineer for 12 months at a startup working on increasing large scale solar power penetration in electricity networks globally. Worked there for 4 years solving all sorts of interesting problems working with meteorologists and electricity network specialists to build solar power forecasting systems. Implemented direct integration with several national electricity markets putting forward bids on 5 minute power generation which indirectly controlled many utility scale solar farms. This and more while keeping costs down and whole company to less than 10 people. Put lots of automation in place early on which enabled this as people joined. Having good monitoring solution along with CI from day 1 was a great enabler. The project moved the needle for the amount of solar power that could be confidently installed into electricity networks in Australia, and many countries around the world. I got heavily burnt out, didn't get any equity, and initially took a substantial pay cut to work there, but on balance still the most impactful work I've done, and will be hard to top.