Killian is a senior partner of the firm that is involved in service delivery to clients across a broad range of industries. He is a Fellow of both the Institute of Chartered Accountants of Nigeria (ICAN) and The Chartered Institute of Taxation of Nigeria (CITN), and an Associate member of the Business Recovery & Insolvency Practitioners Association of Nigeria (BRIPAN). He holds an MBA degree from Ambrose Alli University, Ekpoma.

He has over 28 years of professional experience in Taxation, Audit, and Financial Management Consulting. He commenced his work career with the firm of Ijewere & Co, (Chartered Accountants and Chartered Tax Consultants), and after over a decade of progressive experience joined Pedabo as a Manager in 2009, providing services at strategic levels to companies with diverse business interests and structures. Killian has been involved in all aspects of taxation practice including International Tax Advisory, Nigerian Corporate & Personal Tax, Financial & Tax Due Diligence, Financial Reporting, and HR Compensation & Benefits.

Killian became a Tax Partner at the firm in 2013 and has since led several engagements for a broad range of companies cutting across real estate development and construction, manufacturing, telecommunications, trading, financial institutions, Not-for-profit and government business and partnership entities.