Dave Ramscar has served with Lincs Fire and Rescue for almost 32 years, working at stations across the county including Gainsborough.
Progressing through the ranks, he started as a firefighter in 1984.
He was promoted to lead firefighter in 1992, station officer in 1997 and then to the role of assistant divisional officer in 2001.
In 2002, he became divisional officer operations and then in 2006, he was promoted to assistant chief officer.
He became head of the county’s brigade in January 2011.
As well as protecting and helping local Lincolnshire people, Mr Ramscar has played a key role in helping in national and international disasters.
Most recently, through his work with the International Search and Rescue (ISAR) team, he led a search and rescue mission in Nepal following the earthquake.
He has also coordinated rescue missions in Japan and New Zealand.
Dave said: “Over the last few years, we have done many great things.
“It has been a privilege to work with some very talented and passionate people, both operational and non-operational, who have dedicated their lives to protecting our communities.
“I am very proud to have played a key role in ensuring Lincolnshire is equipped for the future.”
Mr Ramscar will officially leave his post at the end of November.