Exxon Mobil Corp. is recruiting a biofuel and ethanol trader in North America, the company said in a social media post, as part of its efforts to develop lower emission fuels.

The largest U.S. oil producer plans to invest $15 billion over six years to lower its greenhouse-gas emissions including through biofuels. Demand for renewable fuels and carbon credits is rising as buyers transition to a lower-emission market.

The position will be responsible for developing and capturing commercial and derivative trading opportunities supported by production and supply chain footprint in the U.S and Canadian markets, Exxon Mobil said in a LinkedIn posting.

In the role, the trader will work with suppliers and customers to manage risk across the value chain, including feedstocks, biofuels, and renewable credit markets, the posting said.

“Our investment in biofuels builds on Exxon Mobil’s continuing efforts to develop and deploy lower-emission energy solutions,” spokesperson Todd Spitler said in a written statement, declining to elaborate on commercial transactions.

Exxon Mobil has made a push into developing biofuels at its Strathcona, Edmonton, Canada oil refinery and agreed this year to acquire a stake in Biojet, a Norwegian biofuels company.