Before joining as executive director of TSIL, Pattanik had stint of 31 years in different functions and divisions of Tata Steel. His area of operation was raw materials, port operations and logistics solutions, liaison and business facilitation, policy and regulatory affairs relating to mining etc. He joined Tata Steel in 1983 after completing his B.E Degree in Mining Engineering from the Osmania University.
Pattanik has served on the boards of Tata Refractories, Nilachal Refractory, Trustee of Paradip Port Trust and as vice-president, Utkal Chamber of Commerce & Industries (UCCI). He served as non-executive director of TSIL from July-2003 until August-2009. He is also chairman of Confederation of Indian Industries (CII), Odisha State Council.

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