diff --git a/src/main/java/com/test/service/SponsorService.java b/src/main/java/com/test/service/SponsorService.java
index bbef27a..483c88a 100644
--- a/src/main/java/com/test/service/SponsorService.java
+++ b/src/main/java/com/test/service/SponsorService.java
@@ -13,8 +13,20 @@
 @Slf4j
 public class SponsorService {
 
+    private List<SponsorModel> sponsors;
+
     @Inject
     public SponsorService() {
+        this.sponsors = new ArrayList<>();
+    }
+
+    public SponsorModel addSponsor(SponsorModel sponsor) {
+        sponsors.add(sponsor);
+        return sponsor;
+    }
+
+    public void deleteSponsorById(String id) {
+        sponsors.removeIf(sponsor -> sponsor.getId().equals(id));
     }
 
     public List<SponsorModel> getSponsors() {