Public sector De Juniac served as an adviser to
Nicolas Sarkozy at the
Ministry of Budgets and
Christine Lagarde at the
Ministry of Economics and Finance when they were French ministers. In his role at the Ministry of Economics and Finance, de Juniac worked closely on a 900 million euro capital increase the state-controlled nuclear group
Areva announced in 2010. That same, a French government ethics body opposed his nomination to succeed
Anne Lauvergeon as CEO of Areva, arguing that his role as chief of staff of Lagarde would be "incompatible" with the position.
Private sector De Juniac served as the chairman and
CEO of
Air France (2011–2013) and CEO of
Air France–KLM (2013–2016). His predecessor
Pierre-Henri Gourgeon had personally advocated for de Juniac, who had no previous experience in the airline industry at that point, to succeed him at Air France. He later succeeded
Jean-Cyril Spinetta as CEO of parent company Air France-KLM. During his tenure, he was credited with restructuring Air France-KLM without, for the most part, setting off a major conflict with the company's unions. Right after becoming CEO in 2013, de Juniac launched an efficiency plan called Perform 2020, which, among other things, envisaged the expansion of the group's
Transavia budget airline. But in 2014, plans to open bases for Transavia outside France led to a 15-day pilot strike. De Juniac became Director General and CEO of the
International Air Transport Association on 1 September 2016. He stood down from the role at the end of March 2021. In 2023, management consulting firm
Oliver Wyman appointed de Juniac as Senior Advisor for its transportation practice. ==Other activities==