(Reuters) -Goldman Sachs' Ryan Nolan, a partner in the technology, media and telecommunications group and global co-head of software investment banking, is leaving the bank, according to a memo seen by Reuters on Thursday.

Nolan is set to join private bank BDT & MSD Partners after about 13 years of service at Goldman Sachs, a person familiar with the matter told Reuters.

Goldman Sachs and BDT & MSD Partners did not immediately provide any additional comment.

Nolan joined Goldman in 2012 and was named as managing director in 2015. He became a partner with the firm in 2015.

The technology banker advised clients on mergers and acquisitions, initial public offerings, debt and equity financing and activism defense, according to the memo.

Before joining Goldman Sachs, Nolan served as a senior associate at New-York based international law firm Simpson Thacher & Bartlett. He also serves on the board of organizations like employment consultancy firm REDF and America's Frontier Fund.

Goldman Sachs promoted Jung Min and Barry O'Brien as the global co-heads of the TMT group on Thursday, according to sources familiar with the matter. The Wall Street giant also promoted tech-focused banker Jane Dunlevie to chief operating officer of the group.

The promotions were first reported by the Information.

Investment bankers bringing in more fees helped Goldman Sachs beat Wall Street estimates earlier in the month and earn its biggest quarterly profit in more than three years.