diff --git a/ExpressAPI/src/managers/UserManager.ts b/ExpressAPI/src/managers/UserManager.ts
index 81f129623f4f3f262f35c776762010cce05bc3fe..768878985df0370e70b57646a35a16c534ae1af8 100644
--- a/ExpressAPI/src/managers/UserManager.ts
+++ b/ExpressAPI/src/managers/UserManager.ts
@@ -34,6 +34,16 @@ class UserManager {
     async getByIds(ids: Array<number>): Promise<Array<User>> {
         return Promise.all(ids.map(userId => this.getById(userId)));
     }
+
+    async getByGitlabId(gitlabId: number): Promise<User | undefined> {
+        const raw = await db<User>(User.tableName).where('userGitlabId', gitlabId).first();
+
+        return raw ? this.createObjectFromRawSql(raw) : undefined;
+    }
+
+    async getByGitlabIds(gitlabIds: Array<number>): Promise<Array<User>> {
+        return Promise.all(gitlabIds.map(gitlabId => this.getByGitlabId(gitlabId)));
+    }
 }