diff --git a/backend/src/services/app-connection/gcp/gcp-connection-types.ts b/backend/src/services/app-connection/gcp/gcp-connection-types.ts
index 36d2dc74a..097bed1ef 100644
--- a/backend/src/services/app-connection/gcp/gcp-connection-types.ts
+++ b/backend/src/services/app-connection/gcp/gcp-connection-types.ts
@@ -21,7 +21,7 @@ export type TGcpConnectionConfig = DiscriminativePick<TGcpConnectionInput, "meth
   orgId: string;
 };
 
-export interface GCPApp {
+export type GCPApp = {
   projectNumber: string;
   projectId: string;
   lifecycleState: "ACTIVE" | "LIFECYCLE_STATE_UNSPECIFIED" | "DELETE_REQUESTED" | "DELETE_IN_PROGRESS";
@@ -31,15 +31,15 @@ export interface GCPApp {
     type: "organization" | "folder" | "project";
     id: string;
   };
-}
+};
 
-export interface GCPGetProjectsRes {
+export type GCPGetProjectsRes = {
   projects: GCPApp[];
   nextPageToken?: string;
-}
+};
 
-export interface GCPGetServiceRes {
+export type GCPGetServiceRes = {
   name: string;
   parent: string;
   state: "ENABLED" | "DISABLED" | "STATE_UNSPECIFIED";
-}
+};
diff --git a/backend/src/services/secret-sync/gcp/gcp-sync-fns.ts b/backend/src/services/secret-sync/gcp/gcp-sync-fns.ts
new file mode 100644
index 000000000..75dedbad7
--- /dev/null
+++ b/backend/src/services/secret-sync/gcp/gcp-sync-fns.ts
@@ -0,0 +1,184 @@
+import { request } from "@app/lib/config/request";
+import { logger } from "@app/lib/logger";
+import { getAuthToken } from "@app/services/app-connection/gcp";
+import { IntegrationUrls } from "@app/services/integration-auth/integration-list";
+
+import { SECRET_SYNC_NAME_MAP } from "../secret-sync-maps";
+import { TSecretMap } from "../secret-sync-types";
+import {
+  GCPLatestSecretVersionAccess,
+  GCPSecret,
+  GCPSMListSecretsRes,
+  TGcpSyncWithCredentials
+} from "./gcp-sync-types";
+
+const getGcpSecrets = async (accessToken: string, secretSync: TGcpSyncWithCredentials) => {
+  let gcpSecrets: GCPSecret[] = [];
+
+  const pageSize = 100;
+  let pageToken: string | undefined;
+  let hasMorePages = true;
+
+  while (hasMorePages) {
+    const params = new URLSearchParams({
+      pageSize: String(pageSize),
+      ...(pageToken ? { pageToken } : {})
+    });
+
+    // eslint-disable-next-line no-await-in-loop
+    const { data: secretsRes } = await request.get<GCPSMListSecretsRes>(
+      `${IntegrationUrls.GCP_SECRET_MANAGER_URL}/v1/projects/${secretSync.destinationConfig.projectId}/secrets`,
+      {
+        params,
+        headers: {
+          Authorization: `Bearer ${accessToken}`,
+          "Accept-Encoding": "application/json"
+        }
+      }
+    );
+
+    if (secretsRes.secrets) {
+      gcpSecrets = gcpSecrets.concat(secretsRes.secrets);
+    }
+
+    if (!secretsRes.nextPageToken) {
+      hasMorePages = false;
+    }
+
+    pageToken = secretsRes.nextPageToken;
+  }
+
+  return gcpSecrets;
+};
+
+export const GcpSyncFns = {
+  syncSecrets: async (secretSync: TGcpSyncWithCredentials, secretMap: TSecretMap) => {
+    const { destinationConfig, connection } = secretSync;
+    const accessToken = await getAuthToken(connection);
+
+    const gcpSecrets = await getGcpSecrets(accessToken, secretSync);
+    const res: { [key: string]: string } = {};
+
+    for await (const gcpSecret of gcpSecrets) {
+      const arr = gcpSecret.name.split("/");
+      const key = arr[arr.length - 1];
+
+      const { data: secretLatest } = await request.get<GCPLatestSecretVersionAccess>(
+        `${IntegrationUrls.GCP_SECRET_MANAGER_URL}/v1/projects/${destinationConfig.projectId}/secrets/${key}/versions/latest:access`,
+        {
+          headers: {
+            Authorization: `Bearer ${accessToken}`,
+            "Accept-Encoding": "application/json"
+          }
+        }
+      );
+
+      res[key] = Buffer.from(secretLatest.payload.data, "base64").toString("utf-8");
+    }
+
+    for await (const key of Object.keys(secretMap)) {
+      if (!(key in res)) {
+        // case: create secret
+        await request.post(
+          `${IntegrationUrls.GCP_SECRET_MANAGER_URL}/v1/projects/${destinationConfig.projectId}/secrets`,
+          {
+            replication: {
+              automatic: {}
+            }
+          },
+          {
+            params: {
+              secretId: key
+            },
+            headers: {
+              Authorization: `Bearer ${accessToken}`,
+              "Accept-Encoding": "application/json"
+            }
+          }
+        );
+
+        if (!secretMap[key].value) {
+          logger.warn(
+            `syncSecretsGcpsecretManager: create secret value in gcp where [key=${key}] and  [projectId=${destinationConfig.projectId}]`
+          );
+        }
+
+        await request.post(
+          `${IntegrationUrls.GCP_SECRET_MANAGER_URL}/v1/projects/${destinationConfig.projectId}/secrets/${key}:addVersion`,
+          {
+            payload: {
+              data: Buffer.from(secretMap[key].value).toString("base64")
+            }
+          },
+          {
+            headers: {
+              Authorization: `Bearer ${accessToken}`,
+              "Accept-Encoding": "application/json"
+            }
+          }
+        );
+      }
+    }
+
+    for await (const key of Object.keys(res)) {
+      if (!(key in secretMap)) {
+        // case: delete secret
+        await request.delete(
+          `${IntegrationUrls.GCP_SECRET_MANAGER_URL}/v1/projects/${destinationConfig.projectId}/secrets/${key}`,
+          {
+            headers: {
+              Authorization: `Bearer ${accessToken}`,
+              "Accept-Encoding": "application/json"
+            }
+          }
+        );
+      } else if (secretMap[key].value !== res[key]) {
+        if (!secretMap[key].value) {
+          logger.warn(
+            `syncSecretsGcpsecretManager: update secret value in gcp where [key=${key}] and [projectId=${destinationConfig.projectId}]`
+          );
+        }
+
+        await request.post(
+          `${IntegrationUrls.GCP_SECRET_MANAGER_URL}/v1/projects/${destinationConfig.projectId}/secrets/${key}:addVersion`,
+          {
+            payload: {
+              data: Buffer.from(secretMap[key].value).toString("base64")
+            }
+          },
+          {
+            headers: {
+              Authorization: `Bearer ${accessToken}`,
+              "Accept-Encoding": "application/json"
+            }
+          }
+        );
+      }
+    }
+  },
+  getSecrets: async (secretSync: TGcpSyncWithCredentials): Promise<TSecretMap> => {
+    throw new Error(`${SECRET_SYNC_NAME_MAP[secretSync.destination]} does not support importing secrets.`);
+  },
+
+  removeSecrets: async (secretSync: TGcpSyncWithCredentials, secretMap: TSecretMap) => {
+    const { destinationConfig, connection } = secretSync;
+    const accessToken = await getAuthToken(connection);
+
+    const gcpSecrets = await getGcpSecrets(accessToken, secretSync);
+    for await (const entry of gcpSecrets) {
+      const arr = entry.name.split("/");
+      const key = arr[arr.length - 1];
+      if (key in secretMap) {
+        await request.delete(
+          `${IntegrationUrls.GCP_SECRET_MANAGER_URL}/v1/projects/${destinationConfig.projectId}/secrets/${key}`,
+          {
+            headers: {
+              Authorization: `Bearer ${accessToken}`,
+              "Accept-Encoding": "application/json"
+            }
+          }
+        );
+      }
+    }
+  }
+};
diff --git a/backend/src/services/secret-sync/gcp/gcp-sync-types.ts b/backend/src/services/secret-sync/gcp/gcp-sync-types.ts
index 4cda9618b..1bf6820be 100644
--- a/backend/src/services/secret-sync/gcp/gcp-sync-types.ts
+++ b/backend/src/services/secret-sync/gcp/gcp-sync-types.ts
@@ -13,3 +13,21 @@ export type TGcpSyncInput = z.infer<typeof CreateGcpSyncSchema>;
 export type TGcpSyncWithCredentials = TGcpSync & {
   connection: TGcpConnection;
 };
+
+export type GCPSecret = {
+  name: string;
+  createTime: string;
+};
+
+export type GCPSMListSecretsRes = {
+  secrets?: GCPSecret[];
+  totalSize?: number;
+  nextPageToken?: string;
+};
+
+export type GCPLatestSecretVersionAccess = {
+  name: string;
+  payload: {
+    data: string;
+  };
+};
diff --git a/backend/src/services/secret-sync/secret-sync-fns.ts b/backend/src/services/secret-sync/secret-sync-fns.ts
index e6ee5931f..5ec4ed1f7 100644
--- a/backend/src/services/secret-sync/secret-sync-fns.ts
+++ b/backend/src/services/secret-sync/secret-sync-fns.ts
@@ -14,6 +14,7 @@ import {
 } from "@app/services/secret-sync/secret-sync-types";
 
 import { GCP_SYNC_LIST_OPTION } from "./gcp";
+import { GcpSyncFns } from "./gcp/gcp-sync-fns";
 
 const SECRET_SYNC_LIST_OPTIONS: Record<SecretSync, TSecretSyncListItem> = {
   [SecretSync.AWSParameterStore]: AWS_PARAMETER_STORE_SYNC_LIST_OPTION,
@@ -74,6 +75,8 @@ export const SecretSyncFns = {
         return AwsParameterStoreSyncFns.syncSecrets(secretSync, secretMap);
       case SecretSync.GitHub:
         return GithubSyncFns.syncSecrets(secretSync, secretMap);
+      case SecretSync.GCP:
+        return GcpSyncFns.syncSecrets(secretSync, secretMap);
       default:
         throw new Error(
           `Unhandled sync destination for sync secrets fns: ${(secretSync as TSecretSyncWithCredentials).destination}`
@@ -89,6 +92,9 @@ export const SecretSyncFns = {
       case SecretSync.GitHub:
         secretMap = await GithubSyncFns.getSecrets(secretSync);
         break;
+      case SecretSync.GCP:
+        secretMap = await GcpSyncFns.getSecrets(secretSync);
+        break;
       default:
         throw new Error(
           `Unhandled sync destination for get secrets fns: ${(secretSync as TSecretSyncWithCredentials).destination}`
@@ -106,6 +112,8 @@ export const SecretSyncFns = {
         return AwsParameterStoreSyncFns.removeSecrets(secretSync, secretMap);
       case SecretSync.GitHub:
         return GithubSyncFns.removeSecrets(secretSync, secretMap);
+      case SecretSync.GCP:
+        return GcpSyncFns.removeSecrets(secretSync, secretMap);
       default:
         throw new Error(
           `Unhandled sync destination for remove secrets fns: ${(secretSync as TSecretSyncWithCredentials).destination}`