numbercruncher

2. A computer or program built to handle large amounts of numerical data quickly.

The lab's numbercruncher processed millions of results overnight.

3. A person whose job is to work with figures and calculations, often in finance.

She hired a numbercruncher to check the company's budget.

4. Someone who focuses on facts and figures rather than feelings or big ideas.

He's a real numbercruncher and rarely talks about anything else.