diff --git a/src/Client/src/app/models/Account.ts b/src/Client/src/app/models/Account.ts
index 12f75e0..45cf54a 100644
--- a/src/Client/src/app/models/Account.ts
+++ b/src/Client/src/app/models/Account.ts
@@ -1,5 +1,5 @@
 export class Account {
-  public id: number = -1;
+  public id: number | null = null;
   public userName: string = "";
   public email: string = "";
   public emailVerified: boolean = false;
diff --git a/src/Client/src/app/models/Company.ts b/src/Client/src/app/models/Company.ts
index d0762ca..99a6eb7 100644
--- a/src/Client/src/app/models/Company.ts
+++ b/src/Client/src/app/models/Company.ts
@@ -1,5 +1,5 @@
 export class Company {
-  public id: number = -1;
+  public id: number | null = null;
   public name: string = "";
   public email: string = "";
   public emailVerified: boolean = false;
@@ -14,7 +14,7 @@ export class Company {
 }
 
 export class Employee {
-  public id: number = -1;
+  public id: number | null = null;
   public accountID: number = 0;
   public company: Company = new Company;
 }
\ No newline at end of file
diff --git a/src/Client/src/app/models/JobListing.ts b/src/Client/src/app/models/JobListing.ts
index 18b9427..52fb396 100644
--- a/src/Client/src/app/models/JobListing.ts
+++ b/src/Client/src/app/models/JobListing.ts
@@ -1,5 +1,5 @@
 export class JobListing {
-  public id: number = -1;
+  public id: number | null = null;
   public companyID: number = 0;
   public title: string = "";
   public postalCode: string = "";
diff --git a/src/Client/src/app/models/Resume.ts b/src/Client/src/app/models/Resume.ts
index 4ac970f..74e8ed9 100644
--- a/src/Client/src/app/models/Resume.ts
+++ b/src/Client/src/app/models/Resume.ts
@@ -1,5 +1,5 @@
 export class Resume {
-    public id: number = -1;
+    public id: number | null = null;
     public accountID: number = 0;
     public name: string = "";
     public field: string = "";
@@ -20,7 +20,7 @@ export class Resume {
 }
 
 export class ResumeExperience {
-    id: number = -1;
+    public id: number | null = null;
     resumeID: number = 0;
     jobTitle: string = "";
     company: string = "";
@@ -35,14 +35,14 @@ export class ResumeExperience {
 }
 
 export class ResumeExperienceBullet {
-    id: number = -1;
+    public id: number | null = null;
     resumeID: number = 0;
     resumeExperienceID: number = 0;
     jobFunction: string = "";
 }
 
 export class ResumeMilitary {
-    id: number = -1;
+    public id: number | null = null;
     resumeID: number = 0;
     country: string = "";
     rank: string = "";
@@ -53,7 +53,7 @@ export class ResumeMilitary {
 }
 
 export class ResumeMilitaryBullet {
-    id: number = -1;
+    public id: number | null = null;
     resumeID: number = 0;
     resumeMilitaryID: number = 0;
     achievement: string = "";
@@ -61,7 +61,7 @@ export class ResumeMilitaryBullet {
 }
 
 export class ResumeEducation {
-    id: number = -1;
+    public id: number | null = null;
     resumeID: number = 0;
     degreeType: string = "";
     degreeField: string = "";
@@ -76,21 +76,21 @@ export class ResumeEducation {
 }
 
 export class ResumeSkill {
-    id: number = -1;
+    public id: number | null = null;
     resumeID: number = 0;
     name: string = "";
     description: string = "";
 }
 
 export class ResumeLanguage {
-    id: number = -1;
+    public id: number | null = null;
     resumeID: number = 0;
     language: string = "";
     proficiency: string = "";
 }
 
 export class ResumeCertification {
-    id: number = -1;
+    public id: number | null = null;
     resumeID: number = 0;
     name: string = "";
     verificationURL: string = "";
@@ -98,7 +98,7 @@ export class ResumeCertification {
 }
 
 export class ResumeProject {
-    id: number = -1;
+    public id: number | null = null;
     resumeID: number = 0;
     name: string = "";
     url: string = "";
diff --git a/src/Server/Entities/Account.cs b/src/Server/Entities/Account.cs
index 601a831..44897e3 100644
--- a/src/Server/Entities/Account.cs
+++ b/src/Server/Entities/Account.cs
@@ -1,6 +1,6 @@
 namespace BoredCareers.Entities {
     public class Account {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public string UserName { get; set; } = "";
         public string Email { get; set; } = "";
         public string Role { get; set; } = "Generic";
diff --git a/src/Server/Entities/Company.cs b/src/Server/Entities/Company.cs
index dfa85eb..cd8fbae 100644
--- a/src/Server/Entities/Company.cs
+++ b/src/Server/Entities/Company.cs
@@ -1,7 +1,7 @@
 namespace BoredCareers.Entities {
 
     public class Company {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public string Name { get; set; } = "";
         public string Email { get; set; } = "";
         public bool EmailVerified { get; set; } = false;
@@ -16,7 +16,7 @@ namespace BoredCareers.Entities {
     }
 
     public class Employee {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int AccountID { get; set; } // FK
         public Company Company { get; set; } = new Company(); // FK
     }
diff --git a/src/Server/Entities/JobListing.cs b/src/Server/Entities/JobListing.cs
index f88744e..f4fdc5f 100644
--- a/src/Server/Entities/JobListing.cs
+++ b/src/Server/Entities/JobListing.cs
@@ -1,7 +1,7 @@
 namespace BoredCareers.Entities {
 
     public class JobListing {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int CompanyID { get; set; } // FK
         public string Title { get; set; } = "";
         public string PostalCode { get; set; } = "";
diff --git a/src/Server/Entities/Resume.cs b/src/Server/Entities/Resume.cs
index 55b58c0..bef81bf 100644
--- a/src/Server/Entities/Resume.cs
+++ b/src/Server/Entities/Resume.cs
@@ -1,7 +1,7 @@
 namespace BoredCareers.Entities {
 
     public class Resume {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int AccountID { get; set; } // FK
         public string Name { get; set; } = "";
         public string Field { get; set; } = "";
@@ -22,7 +22,7 @@ namespace BoredCareers.Entities {
     }
 
     public class ResumeExperience {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int ResumeID { get; set; } // FK
         public string JobTitle { get; set; } = "";
         public string Company { get; set; } = "";
@@ -37,14 +37,14 @@ namespace BoredCareers.Entities {
     }
 
     public class ResumeExperienceBullet {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int ResumeID { get; set; } // FK
         public int ResumeExperienceID { get; set; } // FK
         public string JobFunction { get; set; } = "";
     }
 
     public class ResumeMilitary {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int ResumeID { get; set; } // FK
         public string Country { get; set; } = ""; // 2 Letter Country Code
         public string Rank { get; set; } = "";
@@ -55,7 +55,7 @@ namespace BoredCareers.Entities {
     }
 
     public class ResumeMilitaryBullet {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int ResumeID { get; set; } // FK
         public int ResumeMilitaryID { get; set; } // FK
         public string Achievement { get; set; } = "";
@@ -63,7 +63,7 @@ namespace BoredCareers.Entities {
     }
 
     public class ResumeEducation {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int ResumeID { get; set; } // FK
         public string DegreeType { get; set; } = "";
         public string DegreeField { get; set; } = "";
@@ -78,21 +78,21 @@ namespace BoredCareers.Entities {
     }
 
     public class ResumeSkill {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int ResumeID { get; set; } // FK
         public string Name { get; set; } = "";
         public string Description { get; set; } = "";
     }
 
     public class ResumeLanguage {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int ResumeID { get; set; } // FK
         public string Language { get; set; } = "";
         public string Proficiency { get; set; } = "";
     }
 
     public class ResumeCertification {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int ResumeID { get; set; } // FK
         public string Name { get; set; } = "";
         public string VerificationURL { get; set; } = "";
@@ -100,7 +100,7 @@ namespace BoredCareers.Entities {
     }
 
     public class ResumeProject {
-        public int ID { get; set; } // PK
+        public int? ID { get; set; } // PK
         public int ResumeID { get; set; } // FK
         public string Name { get; set; } = "";
         public string URL { get; set; } = "";