Utilize the input text as a context reference, choose the right relationship between Citibank and finance from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Prior to joining TD Bank, he was a Vice President, Healthcare Solutions Group at Citibank and a business development officer at Capital Source healthcare finance unit and GE Healthcare Practice Solutions Group.

Answer: industry