Have you stayed in touch with your grad school? Reach out to each and every prof who you had any interaction with. Tell them you need help or advice. Get them to put you in touch with people/orgs/labs in their networks. Keep mailing them every week if possible. The thing to remember is people are constantly reaching out to the school or profs with various requirements and needs. Lot of it is about timing and contacts. That's what helped me land my first job after nearly 9 months.