HighRadius, which has developed AI-powered fintech software, announced Tuesday it has raised $300 million in a Series C funding round led by D1 Capital and Tiger Global. The round values Houston-based HighRadius at $3.1 billion, triple its valuation of “more than $1 billion” at the time of its $125 million Series B in January of 2020. With this latest financing, HighRadius has raised $475 million in funding. Existing backers ICONIQ Growth and Susquehanna Growth Equity also participated in the round along with a slew of high-profile CEOs, including Snowflake Chairman…