HOLDEN, Maine — Longtime Public Safety Director and Fire Chief Jim Ellis is leaving to take a full-time job with the Penobscot County Sheriff’s Office patrolling the streets of Milford.

“He brings a lot of experience and investigative skills,” Sheriff Glenn Ross said of Ellis, who has been a part-time deputy in Milford since 2006.

Ellis, who also is the fire chief for Eddington, handed in his resignation letter to Holden in mid-July.

“All good things must come to an end,” his letter, dated July 18, states. “Therefore, it is with a great deal of mixed emotion that I submit my resignation as Public Safety Director for the town of Holden effective at 5 p.m. Aug. 17, 2012.”

Milford residents decided earlier this year to hire a second full-time deputy from the Penobscot County Sheriff’s Office, Town Manager Dawn Adams said Wednesday.

“We’ve had one full-time deputy for a few years now and the town voted at our annual town meeting in June to add a second full-time deputy,” she said.

Deputy Ray Goodspeed is the current full-time deputy and soon will be joined by Ellis.

“Jim is more than qualified,” Adams said. “We have had a great working relationship since he’s been here. We’re excited to work with him and he’s excited to get started.”

When the town started its partnership with the sheriff’s department, Ellis jumped on board to serve the community, the town manager said.

Ellis is a well-liked law enforcement officer, Ross said.

“He’s a people person,” the sheriff said. “We’re pleased.”

After making his decision, Ellis began informing those he works with in Holden about his departure, one firefighter said. Eddington officials also were told, even though “he’s still staying on in Eddington,” Eddington Town Manager Russell Smith said recently.

“I will forever be grateful for the opportunity to serve the citizens of Holden over the past 15 years and equally thankful for the many opportunities the town has given me,” Ellis said in his resignation letter. “Although often difficult, change is good for both individuals and organizations. With a new budget in place I feel this is a good time for a transition and for fresh and enthusiastic leadership.”

The demands of being the public safety officer, “especially the 24/7 availability required to successfully lead a small public safety organization such as ours, is not beneficial to a quality family life,” Ellis said. “For me it is now time to focus on my family, as well as other personal and professional interests.”