diff --git a/backend/src/main/java/ch/puzzle/pcts/repository/MemberRepository.java b/backend/src/main/java/ch/puzzle/pcts/repository/MemberRepository.java
index b767f9127..c419dfbbf 100644
--- a/backend/src/main/java/ch/puzzle/pcts/repository/MemberRepository.java
+++ b/backend/src/main/java/ch/puzzle/pcts/repository/MemberRepository.java
@@ -2,15 +2,19 @@
 
 import ch.puzzle.pcts.model.member.Member;
 import java.util.Optional;
+import org.springframework.data.jpa.repository.Query;
 import org.springframework.stereotype.Repository;
 
 @Repository
 public interface MemberRepository extends SoftDeleteRepository<Member, Long> {
     Optional<Member> findByPtimeIdAndIdNotAndPtimeIdNotNull(Long ptimeId, Long id);
 
+    @Query("SELECT m FROM Member m WHERE m.deletedAt IS NULL AND m.ptimeId = :ptimeId")
     Optional<Member> findByPtimeId(Long ptimeId);
 
+    @Query("SELECT m FROM Member m WHERE m.deletedAt IS NULL AND m.abbreviation = :abbreviation")
     Optional<Member> findByAbbreviation(String abbreviation);
 
+    @Query("SELECT m FROM Member m WHERE m.deletedAt IS NULL AND m.ldapName = :ldapName")
     Optional<Member> findMemberByLdapName(String ldapName);
 }
diff --git a/backend/src/test/java/ch/puzzle/pcts/service/persistence/MemberPersistenceServiceIT.java b/backend/src/test/java/ch/puzzle/pcts/service/persistence/MemberPersistenceServiceIT.java
index 922c74c90..e3e65bd13 100644
--- a/backend/src/test/java/ch/puzzle/pcts/service/persistence/MemberPersistenceServiceIT.java
+++ b/backend/src/test/java/ch/puzzle/pcts/service/persistence/MemberPersistenceServiceIT.java
@@ -82,4 +82,36 @@ void shouldReturnEmptyWhenLdapNameDoesNotExist() {
 
         assertTrue(result.isEmpty());
     }
+
+    @DisplayName("Should not return member by id when member is deleted")
+    @Test
+    void shouldNotReturnMemberByIdWhenIsDeleted() {
+        Optional<Member> result = persistenceService.findById(DELETED_MEMBER_4.getId());
+
+        assertTrue(result.isEmpty());
+    }
+
+    @DisplayName("Should not return member by LDAP name when member is deleted")
+    @Test
+    void shouldNotReturnMemberByLdapNameWhenIsDeleted() {
+        Optional<Member> result = persistenceService.findByLdapName(DELETED_MEMBER_4.getLdapName());
+
+        assertTrue(result.isEmpty());
+    }
+
+    @DisplayName("Should not return member by ptimeId when member is deleted")
+    @Test
+    void shouldNotReturnMemberByPtimeIdWhenIsDeleted() {
+        Optional<Member> result = persistenceService.findByPtimeId(DELETED_MEMBER_4.getPtimeId());
+
+        assertTrue(result.isEmpty());
+    }
+
+    @DisplayName("Should not return member by abbreviation when member is deleted")
+    @Test
+    void shouldNotReturnMemberByAbbreviationWhenIsDeleted() {
+        Optional<Member> result = persistenceService.findByAbbreviation(DELETED_MEMBER_4.getAbbreviation());
+
+        assertTrue(result.isEmpty());
+    }
 }
diff --git a/backend/src/test/java/ch/puzzle/pcts/util/TestDataModels.java b/backend/src/test/java/ch/puzzle/pcts/util/TestDataModels.java
index c5a54bdb9..f045a7036 100644
--- a/backend/src/test/java/ch/puzzle/pcts/util/TestDataModels.java
+++ b/backend/src/test/java/ch/puzzle/pcts/util/TestDataModels.java
@@ -135,6 +135,22 @@ private TestDataModels() {
             .withSyncErrorCount(0)
             .build();
 
+    public static final Member DELETED_MEMBER_4 = Member.Builder
+            .builder()
+            .withId(DELETED_MEMBER_4_ID)
+            .withFirstName("Member 4")
+            .withLastName("Test")
+            .withLdapName("mtest4")
+            .withEmploymentState(EmploymentState.MEMBER)
+            .withAbbreviation("M4")
+            .withDateOfHire(LocalDate.of(2020, 6, 1))
+            .withBirthDate(LocalDate.of(1998, 3, 3))
+            .withOrganisationUnit(ORG_UNIT_2)
+            .withPtimeId(4L)
+            .withLastSuccessfulSync(LocalDateTime.of(2025, 12, 1, 1, 1))
+            .withSyncErrorCount(0)
+            .build();
+
     public static final Member MEMBER_5 = Member.Builder
             .builder()
             .withId(MEMBER_5_DELETED_CERT_ID)