Follie joined the company in May from Green & Black's where she was global category manager for gifting and seasonal products, responsible for the development of innovation.
Her priority in the new role will be to boost consumer awareness of the crisp brand abroad. "We've been building strong relationships in the UK and we want to do that more effectively abroad, especially in Europe and France," she said.
Tyrrells already has a strong presence in France but, speaking earlier this year, CEO David Milner said unfavourable exchange rates had ruled out a French production base in the short term.
In March, Tyrrells revealed a 42% increase in year-on-year sales growth thanks to strong international sales, which had jumped 50% to £7.5m. The company said it was "on track" to double overseas sales to £15m this year, with big pushes also planned in both the US and Canadian markets.
Follie's appointment follows that of Laurence Bass earlier this year. He joined as head of international, responsible for setting the international export strategy for the business having also previously worked for six years at Green & Black's in the same role.
This month, Tyrrells redesigned the packaging of its potato crisps and spruced up its website to emphasise the brand's English credentials.