Big banks. I used to work at Morgan Stanley - they value this intersection a lot.

In my group, there were business analysts and developers. Guess who got more comp and recognition within the company? And there were a select few who could do both - they were intensely valued.

It's good career advice especially if you're working in a capacity where engineering is supporting a business, rather than the business itself.

Any sort of mid-to-large e-commerce company will have a large back-office ERP system (e.g. SAP, Oracle Financials, etc.) that needs to correctly account for data coming from the user-facing transactional systems (i.e. the website or mobile apps). How the transactional data from your runtime systems (usually stored in a relational DB) is accounted for in these ERP systems is tricky and can have big implications if not done correctly.

I would look at finance companies and banks directly.

Those businesses are about transactions. Now think about assets, deposit and cash management accounts, and debt. Not so much about companies, but transformation of industries.

The aggregators. Yodlee, Plaid, MX, etc.

We're hiring at Remitly :)