The outfit said the takeover creates one of the largest IT services firms catering to the alternative financial services sector in London.
The combined business will have 150 employees.
TiG CEO Des Lekerman said: “It’s a great time to have the capability and expertise to provide these services, as the need and appetite for digital transformation, and for data insights, has never been greater. We are proud to welcome everyone at MMRIT to TiG and I look forward to the next phase of our journey together.”
The Microsoft Gold partner took in investment cash from BGF in July 2018, before acquiring netConsult in January last year.