diff --git a/back/src/Controller/AdminController.ts b/back/src/Controller/AdminController.ts
index 78280523..7bb536ca 100644
--- a/back/src/Controller/AdminController.ts
+++ b/back/src/Controller/AdminController.ts
@@ -12,27 +12,29 @@ export class AdminController {
 
 
     getLoginUrlByToken(){
-        this.App.get("/register/:token", async (res: HttpResponse, req: HttpRequest) => {
-            if (!ADMIN_API_URL) {
-                return res.writeStatus("500 Internal Server Error").end('No admin backoffice set!');
-            }
+        this.App.get("/register/:token", (res: HttpResponse, req: HttpRequest) => {
+            (async () => {
+                if (!ADMIN_API_URL) {
+                    return res.writeStatus("500 Internal Server Error").end('No admin backoffice set!');
+                }
 
-            const query = parse(req.getQuery());
+                const query = parse(req.getQuery());
 
-            const token:string = query.token as string;
+                const token:string = query.token as string;
 
-            let response = null
-            try {
-                response = await Axios.get(ADMIN_API_URL+'/api/login-url/'+token, { headers: {"Authorization" : `${ADMIN_API_TOKEN}`} })
-            } catch (e) {
-                console.log(e.message)
-                return res.status(e.status || 500).send('An error happened');
-            }
+                let response = null
+                try {
+                    response = await Axios.get(ADMIN_API_URL+'/api/login-url/'+token, { headers: {"Authorization" : `${ADMIN_API_TOKEN}`} })
+                } catch (e) {
+                    console.log(e.message)
+                    return res.status(e.status || 500).send('An error happened');
+                }
 
-            const organizationSlug = response.data.organizationSlug;
-            const worldSlug = response.data.worldSlug;
-            const roomSlug = response.data.roomSlug;
-            return res.writeStatus("200 OK").end(JSON.stringify({organizationSlug, worldSlug, roomSlug}));
+                const organizationSlug = response.data.organizationSlug;
+                const worldSlug = response.data.worldSlug;
+                const roomSlug = response.data.roomSlug;
+                res.writeStatus("200 OK").end(JSON.stringify({organizationSlug, worldSlug, roomSlug}));
+            })();
         });
     }
 }
diff --git a/back/src/Controller/AuthenticateController.ts b/back/src/Controller/AuthenticateController.ts
index b7fd093c..6585054d 100644
--- a/back/src/Controller/AuthenticateController.ts
+++ b/back/src/Controller/AuthenticateController.ts
@@ -39,20 +39,22 @@ export class AuthenticateController extends BaseController {
             res.end();
         });
 
-        this.App.post("/login", async (res: HttpResponse, req: HttpRequest) => {
-            this.addCorsHeaders(res);
+        this.App.post("/login", (res: HttpResponse, req: HttpRequest) => {
+            (async () => {
+                this.addCorsHeaders(res);
 
-            res.onAborted(() => {
-                console.warn('Login request was aborted');
-            })
-            const param = await res.json();
-            const userUuid = uuid();
-            const token = Jwt.sign({name: param.name, userUuid: userUuid} as TokenInterface, SECRET_KEY, {expiresIn: '24h'});
-            res.writeStatus("200 OK").end(JSON.stringify({
-                token: token,
-                mapUrlStart: URL_ROOM_STARTED,
-                userId: userUuid,
-            }));
+                res.onAborted(() => {
+                    console.warn('Login request was aborted');
+                })
+                const param = await res.json();
+                const userUuid = uuid();
+                const token = Jwt.sign({name: param.name, userUuid: userUuid} as TokenInterface, SECRET_KEY, {expiresIn: '24h'});
+                res.writeStatus("200 OK").end(JSON.stringify({
+                    token: token,
+                    mapUrlStart: URL_ROOM_STARTED,
+                    userId: userUuid,
+                }));
+            })();
         });
     }
 }
diff --git a/back/src/Server/server/app.ts b/back/src/Server/server/app.ts
index 800353c2..3b98a9b3 100644
--- a/back/src/Server/server/app.ts
+++ b/back/src/Server/server/app.ts
@@ -5,7 +5,7 @@ import { UwsApp } from './types';
 
 class App extends (<UwsApp>_App) {
   constructor(options: AppOptions = {}) {
-    super(options);
+    super(options); // eslint-disable-line constructor-super
     extend(this, new BaseApp());
   }
 }
diff --git a/back/src/Server/server/baseapp.ts b/back/src/Server/server/baseapp.ts
index d723c33d..0c07c17e 100644
--- a/back/src/Server/server/baseapp.ts
+++ b/back/src/Server/server/baseapp.ts
@@ -11,11 +11,11 @@ const handleBody = (res: HttpResponse, req: HttpRequest) => {
 
   res.bodyStream = function() {
     const stream = new Readable();
-    stream._read = noOp;
+    stream._read = noOp; // eslint-disable-line @typescript-eslint/unbound-method
 
     this.onData((ab, isLast) => {
       // uint and then slicing is bit faster than slice and then uint
-      stream.push(new Uint8Array(ab.slice((ab as any).byteOffset, ab.byteLength)));
+      stream.push(new Uint8Array(ab.slice((ab as any).byteOffset, ab.byteLength))); // eslint-disable-line @typescript-eslint/no-explicit-any
       if (isLast) {
         stream.push(null);
       }
@@ -26,7 +26,7 @@ const handleBody = (res: HttpResponse, req: HttpRequest) => {
 
   res.body = () => stob(res.bodyStream());
 
-  if (contType.indexOf('application/json') > -1)
+  if (contType.includes('application/json'))
     res.json = async () => JSON.parse(await res.body());
 };
 
diff --git a/back/src/Server/server/sslapp.ts b/back/src/Server/server/sslapp.ts
index 60b17aa4..46ae89a5 100644
--- a/back/src/Server/server/sslapp.ts
+++ b/back/src/Server/server/sslapp.ts
@@ -5,7 +5,7 @@ import { UwsApp } from './types';
 
 class SSLApp extends (<UwsApp>_SSLApp) {
   constructor(options: AppOptions) {
-    super(options);
+    super(options); // eslint-disable-line constructor-super
     extend(this, new BaseApp());
   }
 }
diff --git a/back/src/Server/server/utils.ts b/back/src/Server/server/utils.ts
index f7f3e4b5..80ea3938 100644
--- a/back/src/Server/server/utils.ts
+++ b/back/src/Server/server/utils.ts
@@ -1,6 +1,6 @@
 import { ReadStream } from 'fs';
 
-function extend(who: any, from: any, overwrite = true) {
+function extend(who: any, from: any, overwrite = true) { // eslint-disable-line @typescript-eslint/no-explicit-any
   const ownProps = Object.getOwnPropertyNames(Object.getPrototypeOf(from)).concat(
     Object.keys(from)
   );
diff --git a/front/src/Connection.ts b/front/src/Connection.ts
index 6da46c2d..e0c3121d 100644
--- a/front/src/Connection.ts
+++ b/front/src/Connection.ts
@@ -149,9 +149,9 @@ export class Connection implements Connection {
     private readonly socket: WebSocket;
     private userId: number|null = null;
     private listeners: Map<string, Function[]> = new Map<string, Function[]>();
-    private static websocketFactory: null|((url: string)=>any) = null;
+    private static websocketFactory: null|((url: string)=>any) = null; // eslint-disable-line @typescript-eslint/no-explicit-any
 
-    public static setWebsocketFactory(websocketFactory: (url: string)=>any): void {
+    public static setWebsocketFactory(websocketFactory: (url: string)=>any): void { // eslint-disable-line @typescript-eslint/no-explicit-any
         Connection.websocketFactory = websocketFactory;
     }
 
@@ -206,9 +206,9 @@ export class Connection implements Connection {
             } else if (message.hasRoomjoinedmessage()) {
                 const roomJoinedMessage = message.getRoomjoinedmessage() as RoomJoinedMessage;
 
-                const users: Array<MessageUserJoined> = roomJoinedMessage.getUserList().map(this.toMessageUserJoined);
-                const groups: Array<GroupCreatedUpdatedMessageInterface> = roomJoinedMessage.getGroupList().map(this.toGroupCreatedUpdatedMessage);
-                let items: { [itemId: number] : unknown } = {};
+                const users: Array<MessageUserJoined> = roomJoinedMessage.getUserList().map(this.toMessageUserJoined.bind(this));
+                const groups: Array<GroupCreatedUpdatedMessageInterface> = roomJoinedMessage.getGroupList().map(this.toGroupCreatedUpdatedMessage.bind(this));
+                const items: { [itemId: number] : unknown } = {};
                 for (const item of roomJoinedMessage.getItemList()) {
                     items[item.getItemid()] = JSON.parse(item.getStatejson());
                 }
@@ -221,7 +221,7 @@ export class Connection implements Connection {
             } else if (message.hasSetuseridmessage()) {
                 this.userId = (message.getSetuseridmessage() as SetUserIdMessage).getUserid();
             } else if (message.hasErrormessage()) {
-                console.error(EventMessage.MESSAGE_ERROR, message.getErrormessage()?.getMessage);
+                console.error(EventMessage.MESSAGE_ERROR, message.getErrormessage()?.getMessage());
             } else if (message.hasWebrtcsignaltoclientmessage()) {
                 this.dispatch(EventMessage.WEBRTC_SIGNAL, message.getWebrtcsignaltoclientmessage());
             } else if (message.hasWebrtcscreensharingsignaltoclientmessage()) {