The 20-year-old signed until the end of the season after training with his new team-mates on Friday and will go into the squad for the Scottish Communities League Cup semi-final against Inverness.
Ngoo told Hearts News: “I’m honoured to be here. I’m delighted and happy to be at such a big team and I’m ready to go.”
Ngoo follows Liverpool team-mate Danny Wilson in signing for Hearts after the club’s transfer embargo was lifted by the Scottish Premier League earlier this month.
Chesterfield boss Jack Lester felt his side were unlucky not to claim all three points after their 1-1 draw at Cheltenham.
New Swindon manager Phil Brown revelled in his side's victory at Cambridge in his first game in charge.
Graham Westley believed his side 'disintegrated' in the second half of their 2-0 loss against Wycombe.
Port Vale manager Neil Aspin praised his side's 'fighting spirit' after they came back from two goals down to draw 2-2 with Stevenage at Vale Park.
Garry Monk had every reason to have a wide smile on his face after guiding Birmingham to a vital 3-0 Championship home win over below-par Hull.
Lee Johnson was delighted for Milan Djuric after the striker's 64th minute goal boosted Bristol City's Sky Bet Championship play-off bid.
Sheffield United manager Chris Wilder was left frustrated with his team's quality in the final third after they drew 0-0 against Nottingham Forest.
Mark Robins praised his players resilience as Coventry's game management counted in a hard-fought victory at Crewe.