// Select Server
SelectServer ss = GetService<SelectServer>();
// Security Manager
ISecurityManager sm = ss.GetService<ISecurityManager>();
// Get Current User
ISecurityUser CurrentUser = sm.GetUser(sm.CurrentSecurityIdentityID);
// Get Group
ISecurityIdentity gsi = sm.Identities.Where(t => t.Name == "Title Officer" && t.IsGroup).FirstOrDefault();
ISecurityGroup Group = sm.GetGroup(gsi);
bool TitleOfficer = Group.Members.Contains(CurrentUser);
Are you looking for membership in a Position (Title officer/Examiner, Escrow assisting/Pre-closer, etc. checkboxes on each user) or Group membership as in SPAdmin Security/Groups? Your intent is a bit unclear.