Updated the organization.java with the hire() method as per requirements.

coding-evaluation.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/java" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

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

@@ -11,11 +11,11 @@ public Employee(int identifier, Name name) {
         this.identifier = identifier;
         this.name = name;
     }
-    
+
     public int getIdentifier() {
         return identifier;
     }
-    
+
     public Name getName() {
         return name;
     }

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

@@ -1,7 +1,6 @@
 package com.aa.act.interview.org;
 
 public class MyOrganization extends Organization {
-
     @Override
     protected Position createOrganization() {
         Position ceo = new Position("CEO");
@@ -27,7 +26,7 @@ protected Position createOrganization() {
         vpt.addDirectReport(dct);
         Position s = new Position("Salesperson");
         vps.addDirectReport(s);
-        
+
         return ceo;
     }
 
@@ -44,6 +43,7 @@ public static final void main(String... args) {
         myOrg.hire(new Name("Head", "Geek"), "VP Technology");
         myOrg.hire(new Name("Steve", "Dent"), "VP Infrastructure");
         myOrg.hire(new Name("Slick", "Willie"), "Salesperson");
+        //System.out.println(myOrg);
         System.out.println(myOrg);
     }
 }

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

@@ -4,7 +4,7 @@ public class Name {
 
     private String first;
     private String last;
-    
+
     public Name(String first, String last) {
         if(first == null)
             throw new IllegalArgumentException("first name cannot be null");
@@ -13,11 +13,11 @@ public Name(String first, String last) {
         this.first = first;
         this.last = last;
     }
-    
+
     public String getFirst() {
         return first;
     }
-    
+
     public String getLast() {
         return last;
     }

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

@@ -1,34 +1,52 @@
 package com.aa.act.interview.org;
 
+import java.util.LinkedList;
 import java.util.Optional;
+import java.util.Queue;
+import java.util.concurrent.atomic.AtomicInteger;
 
 public abstract class Organization {
 
     private Position root;
-
+    private AtomicInteger employeeCounter;
+
     public Organization() {
         root = createOrganization();
+        employeeCounter = new AtomicInteger(0);
     }
-    
+
     protected abstract Position createOrganization();
-    
+
     /**
      * hire the given person as an employee in the position that has that title
-     * 
+     *
      * @param person
      * @param title
      * @return the newly filled position or empty if no position has that title
      */
-    public Optional<Position> hire(Name person, String title) {
-        //your code here
-        return Optional.empty();
+public Optional<Position> hire(Name person, String title) {
+    Queue<Position> queue = new LinkedList<>();
+    queue.add(root);
+
+    while (!queue.isEmpty()) {
+        Position position = queue.poll();
+
+        if (position.getTitle().equals(title) && !position.isFilled()) {
+            Employee newEmployee = new Employee(employeeCounter.incrementAndGet(), person);
+            position.setEmployee(Optional.of(newEmployee));
+            return Optional.of(position);
+        }
+        queue.addAll(position.getDirectReports());
     }
 
+    return Optional.empty();
+}
+
     @Override
     public String toString() {
         return printOrganization(root, "");
     }
-    
+
     private String printOrganization(Position pos, String prefix) {
         StringBuffer sb = new StringBuffer(prefix + "+-" + pos.toString() + "\n");
         for(Position p : pos.getDirectReports()) {