Velocious won Business News’ Rising Stars award in 2011, with a strategy that focused on supplying specialist equipment and services for the subsea oil and gas sector.
The company told Business News last year that it had also diversified into the renewable energy field, leading to an increase in staffing to more than 45 positions.
Proserv already operates a service facility in Malaga.
In addition, Proserv also acquired Weatherford’s subsea controls subsidiaries during 2012, adding a further 300 staff to the company.
“We are always looking to invest in companies which strengthen and diversify our suite of products and services.”
Mr Lamont was recently named Ernst & Young Scotland Entrepreneur of the Year 2013.
Velocious director Brian Matthews said in a statement: “Proserv has grown to become a leading player in the energy sector in recent years. Joining forces with Proserv will allow us to continue growing on a global scale.”