Jonathan Lobert was born on 30 April 1985 in Metz. He discovered sailing in Mâcon on the Optimist, then sailed the Moth Europe and Laser before settling on the Finn in 2007, based in La Rochelle.
He won the Finn bronze medal at the London 2012 Olympics, then finished 14th at Rio in 2016. Finn world runner-up in 2015 and 2017, he was also European champion in 2017.
In Class40, he was on the crew of 52 ERDF - Des pieds et des mains at the 2012 Mondial Class40 in La Rochelle, where the boat finished 10th. After his sailing career he became a speaker and consultant, including commentating Olympic sailing for the Paris 2024 Games.