Hector-Ingram left West Ham at the end of last season after 14 years on the Hammers' books.
And after impressing in a subsequent trial spell at Derby - in which he scored five goals in six games - the 20-year-old will continue his career in the Championship club's Under-23s.
Welcome, Jahmal Hector-Ingram!— Derby County (@dcfcofficial) August 12, 2019
The 20-year-old striker joins #DCFCU23s after scoring five goals in six games as a trialist during pre-season...
The Derby academy director, Darren Wassall, has told the club's official website he is 'delighted' to have offered Hector-Ingram a chance to prove himself.
But the length of the Londoner's contract remains unclear.
Hector-Ingram, who spent the past couple of campaigns in West Ham's U23s, has yet to play any competitive senior football.
And with players such as Martyn Waghorn, Jack Marriott, Chris Martin and Mason Bennett ahead of him at Pride Park - not to mention the impending arrival of Wayne Rooney - Hector-Ingram will have to continue impressing if he is to do so with Derby.
Is the former West Ham striker a good addition for Derby?
Have something to tell us about this article?