diff --git a/src/main/java/com/slatto/domain/notification/service/NotificationService.java b/src/main/java/com/slatto/domain/notification/service/NotificationService.java
index eb96b58b..3da29e8d 100644
--- a/src/main/java/com/slatto/domain/notification/service/NotificationService.java
+++ b/src/main/java/com/slatto/domain/notification/service/NotificationService.java
@@ -461,6 +461,7 @@ public void createNoticeCreatedNotifications(
     @Transactional
     public void createFileUploadedNotifications(
         Long projectId,
+        Long fileId,
         String projectTitle,
         String fileName,
         String uploaderName,
@@ -468,6 +469,7 @@ public void createFileUploadedNotifications(
         Long actorUserId
     ) {
         validateRequiredId(projectId);
+        validateRequiredId(fileId);
         validateRequiredId(actorUserId);
         validateRequiredText(projectTitle);
         validateRequiredText(fileName);
@@ -480,7 +482,7 @@ public void createFileUploadedNotifications(
             .title(createFileUploadedTitle(projectTitle))
             .content(createFileUploadedContent(fileName, uploaderName))
             .targetType(NotificationTargetType.PROJECT_FILE)
-            .targetId(projectId)
+            .targetId(fileId)
             .excludeUserId(actorUserId)
             .build());
     }
@@ -669,7 +671,7 @@ private NotificationListResponse.NotificationSummary toSummary(Notification noti
     }
 
     private String createScheduleAssignedContent(String scheduleTitle, String assigneeName) {
-        return assigneeName + "님이 [" + scheduleTitle + "] 담당자로 지정되었어요";
+        return assigneeName + "님이 [" + scheduleTitle + "] 담당자로 지명되었어요.";
     }
 
     private String createScheduleAssignedTitle(String projectTitle) {
@@ -681,7 +683,7 @@ private String createProjectJoinedTitle(String projectTitle) {
     }
 
     private String createProjectJoinedContent(String joinerName) {
-        return joinerName + "님이 프로젝트에 합류했어요";
+        return joinerName + "님이 프로젝트에 합류했어요.";
     }
 
     private String createScheduleCreatedTitle(String projectTitle) {
@@ -689,7 +691,7 @@ private String createScheduleCreatedTitle(String projectTitle) {
     }
 
     private String createScheduleCreatedContent(String scheduleTitle, String creatorName) {
-        return creatorName + "님이 [" + scheduleTitle + "] 일정을 등록했어요";
+        return creatorName + "님이 [" + scheduleTitle + "] 일정을 등록했어요.";
     }
 
     private String createVideoFeedbackCommentedTitle(String projectTitle) {
@@ -702,10 +704,10 @@ private String createVideoFeedbackCommentedContent(
         int groupCount
     ) {
         if (groupCount <= 1) {
-            return commenterName + "님이 [" + videoTitle + "]에 새로운 피드백을 남겼어요";
+            return commenterName + "님이 [" + videoTitle + "]에 새로운 피드백을 남겼어요.";
         }
 
-        return "[" + videoTitle + "]에 새로운 피드백 " + groupCount + "건이 등록되었어요";
+        return "[" + videoTitle + "]에 새로운 피드백 " + groupCount + "건이 등록되었어요.";
     }
 
     private String createRecruitmentAppliedTitle(String projectTitle) {
@@ -718,10 +720,10 @@ private String createRecruitmentAppliedContent(
         int groupCount
     ) {
         if (groupCount <= 1) {
-            return applicantName + "님이 [" + recruitmentTitle + "]에 지원했어요";
+            return applicantName + "님이 [" + recruitmentTitle + "]에 지원했어요.";
         }
 
-        return "[" + recruitmentTitle + "]에 새로운 지원자 " + groupCount + "명이 지원했어요";
+        return "[" + recruitmentTitle + "]에 새로운 지원자 " + groupCount + "명이 지원했어요.";
     }
 
     private String createNoticeCreatedTitle(String projectTitle) {
@@ -729,7 +731,7 @@ private String createNoticeCreatedTitle(String projectTitle) {
     }
 
     private String createNoticeCreatedContent(String noticeTitle, String creatorName) {
-        return creatorName + "님이 새 공지를 등록했어요: " + noticeTitle;
+        return creatorName + "님이 새 공지를 등록했어요: " + noticeTitle + ".";
     }
 
     private String createFileUploadedTitle(String projectTitle) {
@@ -737,7 +739,7 @@ private String createFileUploadedTitle(String projectTitle) {
     }
 
     private String createFileUploadedContent(String fileName, String uploaderName) {
-        return uploaderName + "님이 [" + fileName + "] 파일을 등록했어요";
+        return uploaderName + "님이 [" + fileName + "] 파일을 등록했어요.";
     }
 
     private String createFallbackTitle(NotificationType type) {
diff --git a/src/main/java/com/slatto/domain/project/service/ProjectFileService.java b/src/main/java/com/slatto/domain/project/service/ProjectFileService.java
index a756da95..2e316dcf 100644
--- a/src/main/java/com/slatto/domain/project/service/ProjectFileService.java
+++ b/src/main/java/com/slatto/domain/project/service/ProjectFileService.java
@@ -1,6 +1,7 @@
 package com.slatto.domain.project.service;
 
 import com.slatto.domain.notification.service.ActivityLogService;
+import com.slatto.domain.notification.service.NotificationService;
 import com.slatto.domain.project.dto.ProjectFileDownloadResponse;
 import com.slatto.domain.project.dto.ProjectFileResponse;
 import com.slatto.domain.project.dto.ProjectFileListResponse;
@@ -12,6 +13,7 @@
 import com.slatto.domain.project.entity.ProjectMember;
 import com.slatto.domain.project.exception.ProjectErrorCode;
 import com.slatto.domain.project.repository.ProjectFileRepository;
+import com.slatto.domain.project.repository.ProjectMemberRepository;
 import com.slatto.domain.user.entity.Users;
 import com.slatto.global.exception.BaseException;
 import com.slatto.global.response.code.CommonErrorCode;
@@ -53,8 +55,10 @@ public class ProjectFileService {
 
     private final ProjectFileRepository projectFileRepository;
     private final ProjectAccessValidator projectAccessValidator;
+    private final ProjectMemberRepository projectMemberRepository;
     private final StorageService storageService;
     private final ActivityLogService activityLogService;
+    private final NotificationService notificationService;
 
     public ProjectFileListResponse getProjectFiles(
         Long projectId,
@@ -123,6 +127,15 @@ public ProjectFileResponse uploadProjectFile(
 
         ProjectFile savedFile = projectFileRepository.save(projectFile);
         activityLogService.createFileUploadedLog(projectId, currentUserId, savedFile.getId(), savedFile.getFileName());
+        notificationService.createFileUploadedNotifications(
+            projectId,
+            savedFile.getId(),
+            project.getTitle(),
+            savedFile.getFileName(),
+            currentMember.getUser().getNickname(),
+            getActiveProjectMemberUserIds(projectId),
+            currentUserId
+        );
 
         return toResponse(savedFile);
     }
@@ -321,6 +334,14 @@ private int normalizePageSize(int size) {
         return Math.min(size, MAX_PAGE_SIZE);
     }
 
+    private List<Long> getActiveProjectMemberUserIds(Long projectId) {
+        return projectMemberRepository.findAllActiveMembersByProjectId(projectId)
+            .stream()
+            .map(ProjectMember::getUser)
+            .map(Users::getId)
+            .toList();
+    }
+
     private ProjectFileResponse toResponse(ProjectFile projectFile) {
         Users uploader = projectFile.getUploader();
 
diff --git a/src/main/java/com/slatto/domain/project/service/ProjectInvitationService.java b/src/main/java/com/slatto/domain/project/service/ProjectInvitationService.java
index 618879a9..ff8edf5b 100644
--- a/src/main/java/com/slatto/domain/project/service/ProjectInvitationService.java
+++ b/src/main/java/com/slatto/domain/project/service/ProjectInvitationService.java
@@ -15,6 +15,7 @@
 import com.slatto.domain.project.repository.ProjectMemberRepository;
 import com.slatto.domain.project.repository.ProjectUserRoleRepository;
 import com.slatto.domain.notification.service.ActivityLogService;
+import com.slatto.domain.notification.service.NotificationService;
 import com.slatto.domain.user.entity.Users;
 import com.slatto.domain.user.enums.RoleName;
 import com.slatto.domain.user.repository.UserRepository;
@@ -50,6 +51,7 @@ public class ProjectInvitationService {
     private final ProjectAccessValidator projectAccessValidator;
     private final ProjectInvitationProperties projectInvitationProperties;
     private final ActivityLogService activityLogService;
+    private final NotificationService notificationService;
     private final SecureRandom secureRandom = new SecureRandom();
 
     @Transactional
@@ -117,6 +119,12 @@ public ProjectInvitationAcceptResponse acceptInvitation(
         saveProjectRoles(projectMember, roleNames);
         projectInvitation.accept(accepter);
         activityLogService.createProjectMemberJoinedLog(project.getId(), accepter.getId());
+        notificationService.createProjectJoinedNotifications(
+            project.getId(),
+            project.getTitle(),
+            accepter.getNickname(),
+            getActiveProjectMemberUserIds(project.getId())
+        );
 
         return ProjectInvitationAcceptResponse.builder()
             .projectId(project.getId())
@@ -134,6 +142,14 @@ private void saveProjectRoles(ProjectMember projectMember, List<RoleName> roleNa
         projectUserRoleRepository.saveAll(projectUserRoles);
     }
 
+    private List<Long> getActiveProjectMemberUserIds(Long projectId) {
+        return projectMemberRepository.findAllActiveMembersByProjectId(projectId)
+            .stream()
+            .map(ProjectMember::getUser)
+            .map(Users::getId)
+            .toList();
+    }
+
     private void validateAcceptableInvitation(ProjectInvitation projectInvitation) {
         if (projectInvitation.isAccepted()) {
             throw new BaseException(ProjectErrorCode.PROJECT_INVITATION_ALREADY_ACCEPTED);
diff --git a/src/main/java/com/slatto/domain/project/service/ProjectNoticeService.java b/src/main/java/com/slatto/domain/project/service/ProjectNoticeService.java
index 0c0e0aff..79469abe 100644
--- a/src/main/java/com/slatto/domain/project/service/ProjectNoticeService.java
+++ b/src/main/java/com/slatto/domain/project/service/ProjectNoticeService.java
@@ -1,6 +1,7 @@
 package com.slatto.domain.project.service;
 
 import com.slatto.domain.notification.service.ActivityLogService;
+import com.slatto.domain.notification.service.NotificationService;
 import com.slatto.domain.project.dto.ProjectNoticeCreateRequest;
 import com.slatto.domain.project.dto.ProjectNoticeListResponse;
 import com.slatto.domain.project.dto.ProjectNoticeReadResponse;
@@ -11,6 +12,7 @@
 import com.slatto.domain.project.entity.ProjectNotice;
 import com.slatto.domain.project.entity.ProjectNoticeRead;
 import com.slatto.domain.project.exception.ProjectErrorCode;
+import com.slatto.domain.project.repository.ProjectMemberRepository;
 import com.slatto.domain.project.repository.ProjectNoticeReadRepository;
 import com.slatto.domain.project.repository.ProjectNoticeRepository;
 import com.slatto.domain.user.entity.Users;
@@ -35,8 +37,10 @@ public class ProjectNoticeService {
 
     private final ProjectNoticeRepository projectNoticeRepository;
     private final ProjectNoticeReadRepository projectNoticeReadRepository;
+    private final ProjectMemberRepository projectMemberRepository;
     private final ProjectAccessValidator projectAccessValidator;
     private final ActivityLogService activityLogService;
+    private final NotificationService notificationService;
 
     public ProjectNoticeListResponse getProjectNotices(
         Long projectId,
@@ -95,6 +99,15 @@ public ProjectNoticeResponse createProjectNotice(
         );
         ProjectNotice savedNotice = projectNoticeRepository.save(projectNotice);
         activityLogService.createNoticeCreatedLog(projectId, currentUserId, savedNotice.getId());
+        notificationService.createNoticeCreatedNotifications(
+            projectId,
+            savedNotice.getId(),
+            project.getTitle(),
+            savedNotice.getTitle(),
+            currentMember.getUser().getNickname(),
+            getActiveProjectMemberUserIds(projectId),
+            currentUserId
+        );
 
         return toResponse(savedNotice, false);
     }
@@ -202,6 +215,14 @@ private Map<Long, Boolean> getReadByNoticeId(Long userId, List<ProjectNotice> pr
             ));
     }
 
+    private List<Long> getActiveProjectMemberUserIds(Long projectId) {
+        return projectMemberRepository.findAllActiveMembersByProjectId(projectId)
+            .stream()
+            .map(ProjectMember::getUser)
+            .map(Users::getId)
+            .toList();
+    }
+
     private int normalizePageSize(int size) {
         if (size <= 0) {
             return DEFAULT_PAGE_SIZE;
diff --git a/src/main/java/com/slatto/domain/schedule/service/ScheduleService.java b/src/main/java/com/slatto/domain/schedule/service/ScheduleService.java
index a3ab6539..bddba54b 100644
--- a/src/main/java/com/slatto/domain/schedule/service/ScheduleService.java
+++ b/src/main/java/com/slatto/domain/schedule/service/ScheduleService.java
@@ -211,6 +211,15 @@ public ScheduleResponse createSchedule(Long currentUserId, ScheduleCreateRequest
             writer.getId()
         );
         if (savedSchedule.isProjectSchedule()) {
+            notificationService.createScheduleCreatedNotifications(
+                project.getId(),
+                savedSchedule.getId(),
+                project.getTitle(),
+                savedSchedule.getTitle(),
+                writer.getNickname(),
+                getActiveProjectMemberUserIds(project.getId()),
+                writer.getId()
+            );
             activityLogService.createScheduleCreatedLog(
                 project.getId(),
                 currentUserId,
@@ -377,6 +386,14 @@ private List<Users> getProjectParticipantUsers(Long projectId, List<Long> partic
             .toList();
     }
 
+    private List<Long> getActiveProjectMemberUserIds(Long projectId) {
+        return projectMemberRepository.findAllActiveMembersByProjectId(projectId)
+            .stream()
+            .map(ProjectMember::getUser)
+            .map(Users::getId)
+            .toList();
+    }
+
     private Users getActiveUser(Long userId) {
         return userRepository.findByIdAndDeletedAtIsNull(userId)
             .orElseThrow(() -> new BaseException(CommonErrorCode.NOT_FOUND));
diff --git a/src/test/java/com/slatto/domain/notification/service/ProjectNoticeActivityFlowIntegrationTest.java b/src/test/java/com/slatto/domain/notification/service/ProjectNoticeActivityFlowIntegrationTest.java
index 55d41eb8..42b2e8d0 100644
--- a/src/test/java/com/slatto/domain/notification/service/ProjectNoticeActivityFlowIntegrationTest.java
+++ b/src/test/java/com/slatto/domain/notification/service/ProjectNoticeActivityFlowIntegrationTest.java
@@ -26,6 +26,7 @@
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
 import org.springframework.context.annotation.Import;
 
 import java.time.LocalDate;
@@ -56,6 +57,9 @@ class ProjectNoticeActivityFlowIntegrationTest {
     @Autowired
     private ProjectActivityReadRepository projectActivityReadRepository;
 
+    @MockBean
+    private NotificationService notificationService;
+
     @Autowired
     private UserRepository userRepository;