South Africa-based Senet has secured a contract to build the plant and associated infrastructure at Hummingbird Resources' Yanfolila gold project in Mali.
Recently, Hummingbird raised funds of $71m for the project.
The Yanfolila gold project is a low-cost, high-grade open-pit mining operation, with the first gold production expected next year.
Under the engineering, procurement and construction management (EPCM) contract, Senet will perform detailed engineering and manage mine construction at the 1.24Mtpa gold project.
The company has already started detailed engineering and procurement on long lead-items such as ball mill, tower crane and CIL tanks.
Hummingbird Resources managing director Dan Betts said: "We have been working with Senet for two years through the optimisation of the project and delivery of the DFS and we look forward to building a mine with them.
"Senet were previously involved with Yanfolila when it was owned by Gold Fields so their knowledge of the project is second to none."
Senet provides project management, detailed multidiscipline engineering, procurement, logistics management, and construction services to the mining, mineral processing, infrastructure and materials handling industries.
Recently, the company worked on both the Loulo (Mali) and Tongon (Côte d'lvoire) mines for Randgold Resources and executed True Gold's Karma project in Burkina Faso.