After a playing career as a forward in the lower leagues of German football, Terzić worked as a scout and youth assistant coach at Borussia Dortmund. Following spells as an assistant to Slaven Bilić, he obtained a UEFA Pro Licence in 2018. He returned to Dortmund as head coach in 2020, winning the DFB-Pokal in 2021 and reaching the UEFA Champions League final in 2024.
Between 2010 and 2013, Terzić worked as a scout and assistant coach in the youth academy of Borussia Dortmund, reporting to first team manager Jürgen Klopp.[10][11]
Terzić was an assistant coach of Slaven Bilić at Beşiktaş between 2013 and 2015 and at West Ham United from 2015 to 2017.[12] His collaboration with Bilić started in 2012, when Terzić drafted and delivered a pre-game opponent analysis for Croatia's group stage match against the Republic of Ireland at Euro 2012.[3] Satisfied with the analysis, Bilić invited him to join him as assistant coach at Lokomotiv Moscow, however, the deal eventually fell through.[3] Bilić once again offered Terzić the position at Beşiktaş and Terzić accepted the offer after consulting with Borussia Dortmund.[3] He followed him to West Ham United in 2015, but left the club two years later when Bilić was sacked on 6 November 2017.[13]
Instead of returning to his position as assistant manager for the 2021–22 season, Terzić moved to the newly created position as technical director.[20] After Rose left by mutual consent at the end of the season, Terzić was reappointed manager on a permanent basis, signing a contract until 2025.[21] In the 2022–23 Bundesliga, the team lost out on the league title on goal difference to Bayern Munich on the final day, following a shock 2–2 draw at home to Mainz 05.[22]
In 2023–24, Terzić led Borussia Dortmund to 5th place, earning direct qualification for the Champions League.[23] He also led the team to the Champions League final in the same season, beating Paris Saint-Germain 2–0 on aggregate in the semi-final.[24][25] In the final, his club lost 2–0 against Real Madrid.[26] He left Borussia Dortmund by his own request on 13 June 2024.[2]
^Raack, Alex (18 December 2014). "Locker vom Rocker – Begegnung mit Slaven Bilic". 11 Freunde (in German). Retrieved 14 December 2020. Glücklicherweise hat Slaven Bilic einen Co-Trainer. Zwei sogar, aber einer von ihnen ist Edin Terzic, ein Deutscher mit kroatisch-bosnischen Wurzeln, 32, einst Fußballer bei Westfalia Herne, Wattenscheid 09 und Borussia Dortmund.
^ ab"BVB-Co-Trainer Edin Terzic: Dieser Mann ersetzt den erkrankten Lucien Favre gegen Hoffenheim" (in German). goal.com. 9 February 2019. Archived from the original on 12 February 2019. Retrieved 12 February 2019. ereits von 2010 bis 2013 arbeitete er für die Borussia, als er unter anderem als Scout für Jürgen Klopp arbeitete und zudem für mehrere Jugendmannschaften unter dem jetzigen HSV-Coach Hannes Wolf als Co-Trainer fungierte.
^Hennecke, Thomas (14 May 2018). "Wird Terzic Favres Assistent?" (in German). Kicker. Archived from the original on 12 February 2019. Retrieved 12 February 2019. Terzic stand bis 2013 als Jugendtrainer (U 16, U 17) und Scout für Jürgen Klopp auf der Gehaltsliste der Borussia, bevor er als Co-Trainer zu Besiktas Istanbul (2013 bis 2015) wechselte und anschließend Slaven Bilic bei West Ham United (bis November 2017) in der Premier League assistierte.
^"West Ham sack manager Slaven Bilic". arabnews.com. Agence France-Presse. Archived from the original on 12 February 2019. Retrieved 12 February 2019. Bilic's assistants Nikola Jurcevic, Edin Terzic, Julian Dicks and Miljenko Rak have also left the club with immediate effect.
^"Tottenham v Dortmund background". UEFA. 21 January 2019. Archived from the original on 12 February 2019. Retrieved 12 February 2019. Dortmund coach Lucien Favre missed the Hoffenheim match through illness, with assistants Manfred Stefes and Edin Terzic taking charge of the team.