For sales: After attaining product-market fit and everything becoming more stable, it’s all about sales. Software development in the growth stage turns into an endless grind of features and bug fixes and is regularly seen as simply a cost. Sales is the mechanism that allows the business to get new customers, so this is something which has a higher impact in the growth stage.
For finance: Managing finance and deals is one of the most important aspects in any business. You can make the same money compared to tech without a ceiling and I’m personally interested in economics and financial topics.
Both have a quantifiable aspect (deal/fund size, new revenue/customers) that makes it easier to measure your impact on the business. This means that it’s easier to get a fair compensation - although bad performance will get noticed easily, too. And the knowledge in these areas compound, especially in sales.
On a personal note, I’m interested in psychology and economics and can build connections with others quickly, so these two fit quite well and I'm convinced that sales and finance are important ingredients for any type of work (philanthropic included).
Best of all worlds would be to build a MVP using software development skills until product-market fit is reached, then being able to grow customers using sales skills and then supporting further growth with external capital and managing an exit using finance skills. - In reality, these are all separate roles, but I'd like to be able to work in these other two areas, too.