Based on the clinical presentation and laboratory findings and what is the most likely diagnosis?

Mr. Santos, a 50-year-old male, presents to the clinic with complaints of joint pain and stiffness in his hands and knees. He also mentions that his father had a similar condition. Upon physical examination, the nurse notes swelling and tenderness in the affected joints. Laboratory tests reveal elevated levels of rheumatoid factor and anti-cyclic citrullinated peptide ( Anti-ccp ) antibodies.