Dariusz worked for Deloitte & Touche as an auditor in 1996-2000. He was involved in auditing of different types of commercial and manufacturing enterprises. Being with D&T he had undertaken ACCA (Association of Chartered Certified Accountants) and qualified in December 1999 becoming the ACCA Member. In 2001 Dariusz joined Accountancy Tuition Center as a tutor, and since 2007 worked as a Business Development Director ATC International Polska. Currently Dariusz Bargieł is employed by Becker Professional Education/ATC International where he is a senior lecturer of financial reporting/IFRS.

Dariusz specialises in IAS, financial reporting, management accounting, issues relating to managing people and Polish civil and business law.