In April 2016, Peltonen signed with SC Bern of Switzerland, where he served as assistant coach, again under Jalonen. He helped Bern capture the 2017 Swiss national championship. Peltonen left the club at the conclusion of the 2017-18 campaign and took over the head coaching job at Lausanne HC. In the 2018-19 season, he guided Lausanne to a semifinal appearance in the Swiss league. He was fired at the end of February 2020. In 2021, he served as assistant coach of Germany's national team at the Deutschland Cup and the World Championship, working under his countryman, head coach Toni Söderholm.