The Lilies lost Dirk Schuster to Augsburg, who was brought in as a replacement for Markus Weinzierl after he made the move to Schalke.
Darmstadt are now manager-less as a result but rumours are suggesting that Norbert Meier, Arminia Bielefeld head coach, is in line to take over.
Schuster takes the reins at Augsburg
Schuster has penned a three-year deal at the WWK Arena after guiding Darmstadt through the most memorable period in their history, culminating in Bundesliga survival.
He will be assisted by Sascha Franz and Frank Steinmetz, his usual team. Franz was previously at Augsburg between January 2008 and April 2009.
Due to his promotion heroics and superb start to the Bundesliga campaign, kicker named him as their Man of the Year for 2015.
Sporting director, Stefan Reuter told the club website: "We are lucky to have found a coach in Dirk Schuster, who fits in perfectly to Augsburg's philosophy."
Schuster commented, "I am excited to take on a new challenge in Augsburg after a wonderful, unforgettable and successful time with Darmstadt."
Will Weinzierl handle the pressure?
Schuster takes over from Weinzierl, who was bought out of his contract by Schalke; his deal with Augsburg was set to run until 2019.
The 41-year-old is widely regarded as one of Germany's finest coaches, after four incredible seasons with FCA where he even took them into Europe.
He has signed a three-year deal at the Veltins-Arena, and will now try his hand at managing at the top end of the Bundesliga; something he is yet to experience.
Weinzierl gave his thoughts on the move: “I’m delighted that the club has put their faith in me. Being the manager at Schalke is a big challenge, but one I’m happy to take on."
Sporting director, Christian Heidel spoke highly of his new man: "We want to start something new at Schalke, with Markus it’s very much a case of the right man, right time."