diff --git a/backend/src/services/app-connection/railway/railway-connection-public-client.ts b/backend/src/services/app-connection/railway/railway-connection-public-client.ts
index 1c8bd9cc2..47eb3f396 100644
--- a/backend/src/services/app-connection/railway/railway-connection-public-client.ts
+++ b/backend/src/services/app-connection/railway/railway-connection-public-client.ts
@@ -75,7 +75,7 @@ class RailwayPublicClient {
   async send<T extends TRailwayResponse>(
     query: string,
     options: RailwaySendReqOptions,
-    variables: Record<string, string | Record<string, string>> = {},
+    variables: Record<string, unknown> = {},
     retryAttempt: number = 0
   ): Promise<T["data"] | undefined> {
     const body = {
@@ -117,6 +117,25 @@ class RailwayPublicClient {
     }
   }
 
+  async getDeployments(
+    config: RailwaySendReqOptions,
+    variables: { input: { serviceId: string; environmentId: string }; first?: number }
+  ) {
+    return this.send<TRailwayResponse<{ deployments: { edges: { node: { id: string } }[] } }>>(
+      `query deployments($input: DeploymentListInput!, $first: Int) { deployments(first: $first, input: $input) { edges { node { id } } } }`,
+      config,
+      variables
+    );
+  }
+
+  async redeployDeployment(config: RailwaySendReqOptions, variables: { input: { deploymentId: string } }) {
+    return this.send<TRailwayResponse<{ deploymentRedeploy: { id: string } }>>(
+      `mutation deploymentRedeploy($deploymentId: String!) { deploymentRedeploy(id: $deploymentId) { id } }`,
+      config,
+      { deploymentId: variables.input.deploymentId }
+    );
+  }
+
   async getSubscriptionType(config: RailwaySendReqOptions & { projectId: string }) {
     const res = await this.send(
       `query project($projectId: String!) { project(id: $projectId) { subscriptionType }}`,
@@ -213,7 +232,9 @@ class RailwayPublicClient {
 
   async deleteVariable(
     config: RailwaySendReqOptions,
-    variables: { input: { projectId: string; environmentId: string; name: string; serviceId?: string } }
+    variables: {
+      input: { projectId: string; environmentId: string; name: string; skipDeploys?: boolean; serviceId?: string };
+    }
   ) {
     await this.send<TRailwayResponse<{ variables: Record<string, string> }>>(
       `mutation variableDelete($input: VariableDeleteInput!) { variableDelete(input: $input) }`,
@@ -222,6 +243,26 @@ class RailwayPublicClient {
     );
   }
 
+  async upsertCollection(
+    config: RailwaySendReqOptions,
+    variables: {
+      input: {
+        projectId: string;
+        environmentId: string;
+        variables: Record<string, string>;
+        skipDeploys?: boolean;
+        serviceId?: string;
+        replace?: boolean;
+      };
+    }
+  ) {
+    return this.send<TRailwayResponse<boolean>>(
+      `mutation variableCollectionUpsert($input: VariableCollectionUpsertInput!) { variableCollectionUpsert(input: $input) }`,
+      config,
+      variables
+    );
+  }
+
   async upsertVariable(
     config: RailwaySendReqOptions,
     variables: { input: { projectId: string; environmentId: string; name: string; value: string; serviceId?: string } }
diff --git a/backend/src/services/secret-sync/railway/railway-sync-fns.ts b/backend/src/services/secret-sync/railway/railway-sync-fns.ts
index 07862aeb5..731691acf 100644
--- a/backend/src/services/secret-sync/railway/railway-sync-fns.ts
+++ b/backend/src/services/secret-sync/railway/railway-sync-fns.ts
@@ -12,6 +12,8 @@ export const RailwaySyncFns = {
   async getSecrets(secretSync: TRailwaySyncWithCredentials): Promise<TSecretMap> {
     try {
       const config = secretSync.destinationConfig;
+      const { keySchema } = secretSync.syncOptions;
+      const { environment } = secretSync;
 
       const variables = await RailwayPublicAPI.getVariables(secretSync.connection, {
         projectId: config.projectId,
@@ -26,6 +28,10 @@ export const RailwaySyncFns = {
         // eslint-disable-next-line no-continue
         if (key.startsWith("RAILWAY_")) continue;
 
+        // Check if key matches the schema
+        // eslint-disable-next-line no-continue
+        if (!matchesSchema(key, environment?.slug || "", keySchema)) continue;
+
         entries[key] = {
           value
         };
@@ -40,60 +46,73 @@ export const RailwaySyncFns = {
     }
   },
 
+  /**
+   * Syncs secrets to Railway and redeploys the service if needed.
+   *
+   * Gets existing Railway vars, merges with new secrets (keeping Railway vars if deletion is disabled),
+   * then replaces every variable with the new values, if variable is not in the secretMap, it is deleted.
+   * If there's a service, triggers a redeploy to pick up the changes.
+   */
   async syncSecrets(secretSync: TRailwaySyncWithCredentials, secretMap: TSecretMap) {
-    const {
-      environment,
-      syncOptions: { disableSecretDeletion, keySchema }
-    } = secretSync;
-    const railwaySecrets = await this.getSecrets(secretSync);
-    const config = secretSync.destinationConfig;
+    try {
+      const {
+        syncOptions: { disableSecretDeletion }
+      } = secretSync;
+      const railwaySecrets = await this.getSecrets(secretSync);
+      const config = secretSync.destinationConfig;
 
-    for await (const key of Object.keys(secretMap)) {
-      try {
-        const existing = railwaySecrets[key];
+      const railwaySecretsMap = Object.fromEntries(
+        Object.entries(railwaySecrets).map(([key, secret]) => [key, secret.value])
+      );
+      const secretMapMap = Object.fromEntries(Object.entries(secretMap).map(([key, secret]) => [key, secret.value]));
 
-        if (existing === undefined || existing.value !== secretMap[key].value) {
-          await RailwayPublicAPI.upsertVariable(secretSync.connection, {
-            input: {
-              projectId: config.projectId,
-              environmentId: config.environmentId,
-              serviceId: config.serviceId || undefined,
-              name: key,
-              value: secretMap[key].value ?? ""
-            }
-          });
+      const toReplace = disableSecretDeletion ? { ...railwaySecretsMap, ...secretMapMap } : secretMapMap;
+
+      const upserted = await RailwayPublicAPI.upsertCollection(secretSync.connection, {
+        input: {
+          projectId: config.projectId,
+          environmentId: config.environmentId,
+          serviceId: config.serviceId || undefined,
+          skipDeploys: true,
+          variables: toReplace,
+          replace: true
         }
-      } catch (error) {
+      });
+
+      if (!upserted)
         throw new SecretSyncError({
-          error,
-          secretKey: key
+          message: "Failed to upsert secrets to Railway"
         });
-      }
-    }
 
-    if (disableSecretDeletion) return;
+      if (!config.serviceId) return;
 
-    for await (const key of Object.keys(railwaySecrets)) {
-      try {
-        // eslint-disable-next-line no-continue
-        if (!matchesSchema(key, environment?.slug || "", keySchema)) continue;
+      const latestDeployment = await RailwayPublicAPI.getDeployments(secretSync.connection, {
+        input: {
+          serviceId: config.serviceId,
+          environmentId: config.environmentId
+        },
+        first: 1
+      });
 
-        if (!secretMap[key]) {
-          await RailwayPublicAPI.deleteVariable(secretSync.connection, {
-            input: {
-              projectId: config.projectId,
-              environmentId: config.environmentId,
-              serviceId: config.serviceId || undefined,
-              name: key
-            }
-          });
+      const latestDeploymentId = latestDeployment?.deployments.edges[0].node.id;
+
+      if (!latestDeploymentId)
+        throw new SecretSyncError({
+          message: "Failed to get latest deployment from Railway"
+        });
+
+      await RailwayPublicAPI.redeployDeployment(secretSync.connection, {
+        input: {
+          deploymentId: latestDeploymentId
         }
-      } catch (error) {
-        throw new SecretSyncError({
-          error,
-          secretKey: key
-        });
-      }
+      });
+    } catch (error) {
+      if (error instanceof SecretSyncError) throw error;
+
+      throw new SecretSyncError({
+        error,
+        message: "Failed to sync secrets to Railway"
+      });
     }
   },
 
@@ -101,24 +120,37 @@ export const RailwaySyncFns = {
     const existing = await this.getSecrets(secretSync);
     const config = secretSync.destinationConfig;
 
-    for await (const secret of Object.keys(existing)) {
-      try {
-        if (secret in secretMap) {
-          await RailwayPublicAPI.deleteVariable(secretSync.connection, {
-            input: {
-              projectId: config.projectId,
-              environmentId: config.environmentId,
-              serviceId: config.serviceId || undefined,
-              name: secret
-            }
-          });
+    // Create a new variables object excluding secrets that exist in secretMap
+    const remainingVariables = Object.fromEntries(
+      Object.entries(existing)
+        .filter(([key]) => !(key in secretMap))
+        .map(([key, secret]) => [key, secret.value])
+    );
+
+    try {
+      const upserted = await RailwayPublicAPI.upsertCollection(secretSync.connection, {
+        input: {
+          projectId: config.projectId,
+          environmentId: config.environmentId,
+          serviceId: config.serviceId || undefined,
+          skipDeploys: true,
+          variables: remainingVariables,
+          replace: true
         }
-      } catch (error) {
+      });
+
+      if (!upserted) {
         throw new SecretSyncError({
-          error,
-          secretKey: secret
+          message: "Failed to remove secrets from Railway"
         });
       }
+    } catch (error) {
+      if (error instanceof SecretSyncError) throw error;
+
+      throw new SecretSyncError({
+        error,
+        message: "Failed to remove secrets from Railway"
+      });
     }
   }
 };