Hi there!
I can recommend Dan Sperrin for dog-walking and/or dog-sitting, he is 33 and English with dog experience his entire life, living in Lausanne.
The dogs he takes over holidays or weekends are walked 3 times a day, with at least one 2 hour walk and the others between 30min - 1h (unless your dog needs more or less exercise of course). He includes playtime and varies the walk locations, basic obedience training and tips are also possible.
Your dog would be kept in a family of two persons with 3 other dogs (2 females and one very gentle male). S/he would have his own sleeping space wherever s/he prefers within 3 rooms, can stay in the bedroom at night if it's a dog that needs company for comfort, plus grooming and feeding/medication depending on your instructions of course.
Fee is 30,- CHF a day plus bring your own food for dog-sitting, dog-walking fees depend on what you need per day. Dan has taken excellent care of my dogs as well as my sister's and additional references are available on request. Over the past 6 months I've also gone on dog-walks with him nearly every day so I've seen how he treats them, he's gentle but firm and very responsible.
Anyways, if you still need a walker/sitter just send me a message on here and I'll put you in touch with each other.
Take care!