Kellogg, the world's largest cereal maker, has promoted Joel Wittenberg to the position of corporate vice president, treasury and investor relations.

The US-based food group said Wittenberg would replace Simon Burton, who will take a finance role in the company's snacks business.

"These moves offer both Simon and Joel new development opportunities and further leverage our bench strength," said Kellogg CFO John Bryant.

The moves come just weeks after Kellogg announced that Bryant - who also heads the company's international operations - and fellow executive Jeffrey Montie would swap roles.

Bryant will continue as CFO but will also head up Kellogg's North American business. Montie heads in the opposite direction, swapping the top job at North America to lead Kellogg's international arm.