added hire method

java/com/aa/act/interview/org/Employee.java

@@ -2,6 +2,7 @@
 
 public class Employee {
 
+        public static int ID = 1;
 	private int identifier;
 	private Name name;
 

java/com/aa/act/interview/org/Organization.java

@@ -1,5 +1,6 @@
 package com.aa.act.interview.org;
 
+import java.util.ArrayList;
 import java.util.Optional;
 
 public abstract class Organization {
@@ -21,9 +22,38 @@ public Organization() {
 	 */
 	public Optional<Position> hire(Name person, String title) {
 		//your code here
+
+		ArrayList<Position> thelist = new ArrayList();
+		thelist.add(root);
+
+		Position thePosition = findPosition(thelist, title);
+
+		if (thePosition != null) {
+			thePosition.setEmployee(Optional.of(new Employee(Employee.ID++, person)));
+			return Optional.of(thePosition);
+		}
+
 		return Optional.empty();
 	}
 
+	private Position findPosition(ArrayList<Position> thelist, String title) {
+		Position thePosition = thelist.remove(0);
+
+		if (thePosition.getTitle().equals(title)) {
+			return thePosition;
+		}
+		else {
+			for (Position p : thePosition.getDirectReports()) {
+				thelist.add(p);
+			}
+
+			Position result = findPosition(thelist, title);
+			if (result != null) return result;
+		}
+
+		return null;
+	}
+
 	@Override
 	public String toString() {
 		return printOrganization(root, "");