Job Description. MARTA is offering a. $5,000 signing bonus. for all lateral Georgia POST certified Police Officers & Dispatchers and $3,000 signing bonus for non-certified personnel for those agreeing to serve three years with MPD. MPD offers a consolidated hiring process for out-of-town applicants and will assist relocation. Additionally, MPD offers $5,000 tuition reimbursement for employees taking career-related classes. POST Certified MPD Offi...