A jobcoach is a professional who helps you find and keep a job. The job-coach can go with you to a job interview, they can help you get the training you need, they can stay with you during the first hours or days or even weeks on the job.
In some countries, jobcoaches are paid for by the government. Usually, jobcoaches are only available for specific groups, e.g. people with disabilities, people who have been unemployed for a long time, young people.
In most countries, 'jobcoach' is not a protected term, anyone can call him/herself a jobcoach. So always check: are you qualified, is the jobcoach qualified, what do you get, who pays? In some countries, there are special jobcoaches for deaf people; you may be able to find jobcoaches who know sign language.