No - you can only connect UK bank accounts as part of your verification. If you have a foreign bank account, don’t worry, you can still complete your verification by skipping the bank connection step and verifying your employment / income by connecting other data sources available to you (e.g. HMRC, payroll).
Note: Konfir is only able to verify UK employment. If the employment you're looking to verify was also overseas, you will need to contact your verifier directly who will be able to make other arrangements for you.