PARIS - French oil and gas major Total on Tuesday signed a $5 billion deal with Saudi Aramco to build a giant petrochemical complex at their 440,000 barrels-per-day Jubail Satorp refinery.

Saudi Aramco holds a 62.5 percent stake in the refinery, while Total holds the other 37.5 percent. The memorandum of understanding (MoU) was signed on the sidelines of a visit by Saudi Crown Prince Mohammed bin Salman in Paris.

"The project will represent an investment of around $5 billion. The two partners are planning to start the front-end engineering and design in the third quarter of 2018," Total said in a statement.

Total added that 8,000 jobs would be created by the deal.

The complex will comprise a mixed-feed steam cracker with a capacity of 1.5 million tons per year of ethylene and related high-added-value petrochemical units, the statement said.

The cracker will feed other petrochemical and specialty chemical plants representing an overall amount of $4 billion investment by third party investors, it said, taking the total investment to $9 billion.

"This project illustrates our strategy of maximizing the integration of our large refining and petrochemical platforms and of expanding our petrochemical operations from low-cost feedstock, to take advantage of the fast growing Asian polymer market," said Total's chief executive Patrick Pouyanne.

(Reporting by Bate Felix; Editing by Sudip Kar-Gupta) ((bate.felix@thomsonreuters.com; +33 1 49 49 55 70; Reuters Messaging: bate.felix.reuters.com@reuters.net; Twitter: @BateFelix))