Pick up a good algorithms text, study it fervently. After you're familiar with most/all of the concepts, apply for a computer science masters or computer scienc

Pick up a good algorithms text, study it fervently. After you're familiar with most/all of the concepts, apply for a computer science masters or computer science PhD program. If you can demonstrate knowledge in algorithms and have industry experience in computational fields, I don't see why you could not be accepted into grad-level CS program. At this point in your career, I doubt a BS will give you more benefit than simply working more in the field (inclusive to furthering your understanding of technical problems and solutions).