"We are delighted to have Sharhan joining us at Credit Suisse," Michael Tan, Head of Financial Institutions Group (FIG) Coverage for Asia Pacific said in a statement.
"With his deep expertise, knowledge and client relationships in the Southeast Asia banks and insurance sector, it will enhance Credit Suisse’s leading FIG franchise in the region.
"There continues to be significant strategic activity across Southeast Asia, and Sharhan brings with him a track record of landmark cross border deals that will contribute to an already strong M&A franchise."
Muhseen was the Head of Financial Institutions Group for Southeast Asia and Head of Coverage for Sri Lanka at Bank of America Merrill Lynch, based in Singapore.
His recent transaction experience includes advising OCBC on its acquisition of Wing Hang Bank and advising Khazanah on its acquisition of a stake in Acibadem Sigorta.
Muhseen also advised Khazanah on its acquisition of a strategic stake in Sri Lanka's John Keells Holdings.
Bank of America was helped raise several sovereign bonds for Sri Lanka during his watch.
Credit Suisse said the Southeast Asia region forms a critical part of its business strategy.
In 2014, Credit Suisse was involved in a 388 million US dollar placement of shares in United Bank Limited for the Government of Pakistan, a 1.1 billion dollar block trade for Malaysia’s CIMB Group and a 266 million dollar rights offering for Philippine National Bank.
In debt Credit Suisse was joint bookrunner on an 800 million US dollar 5.5 year subordinated notes deal for United Overseas Bank in Singapore in March, which was the first ever US dollar Basel III compliant Tier 2 instrument issued by a Southeast Asian bank.