diff --git a/server/eslint.config.js b/server/eslint.config.js
index 4e45d6157..817f54bc2 100755
--- a/server/eslint.config.js
+++ b/server/eslint.config.js
@@ -32,7 +32,9 @@ export default [
 		languageOptions: {
 			parser: tseslint.parser,
 			parserOptions: {
-				projectService: true,
+				projectService: {
+					allowDefaultProject: ["jest.config.ts"],
+				},
 				tsconfigRootDir: import.meta.dirname,
 			},
 		},
diff --git a/server/src/app.ts b/server/src/app.ts
index 58684532c..da1cd8ad9 100644
--- a/server/src/app.ts
+++ b/server/src/app.ts
@@ -4,7 +4,7 @@ import cors from "cors";
 import helmet from "helmet";
 import compression from "compression";
 import cookieParser from "cookie-parser";
-import swaggerUi from "swagger-ui-express";
+import swaggerUi, { type JsonObject } from "swagger-ui-express";
 import { handleErrors } from "@/middleware/handleErrors.js";
 import { generalApiLimiter } from "@/middleware/rateLimiter.js";
 import { sanitizeBody, sanitizeQuery } from "@/middleware/sanitization.js";
@@ -24,7 +24,7 @@ export const createApp = ({
 	controllers: InitializedControllers;
 	envSettings: EnvConfig;
 	frontendPath: string;
-	openApiSpec: any;
+	openApiSpec: JsonObject;
 }) => {
 	const allowedOrigin = envSettings.clientHost;
 	const app = express();
diff --git a/server/src/config/routes.ts b/server/src/config/routes.ts
index 672866dc1..f36f56e16 100644
--- a/server/src/config/routes.ts
+++ b/server/src/config/routes.ts
@@ -1,6 +1,9 @@
+import type { Application } from "express";
 import { createVerifyJWT } from "../middleware/verifyJWT.js";
 import { createVerifyStatusPageAccess } from "../middleware/verifyStatusPageAccess.js";
 import { authApiLimiter } from "../middleware/rateLimiter.js";
+import type { InitializedControllers } from "./controllers.js";
+import type { InitializedServices } from "./services.js";
 
 import AuthRoutes from "../routes/authRoute.js";
 import InviteRoutes from "../routes/inviteRoute.js";
@@ -17,7 +20,7 @@ import NotificationRoutes from "../routes/notificationRoute.js";
 
 import IncidentRoutes from "../routes/incidentRoute.js";
 
-export const setupRoutes = (app: any, controllers: Record<string, any>, services: Record<string, any>) => {
+export const setupRoutes = (app: Application, controllers: InitializedControllers, services: InitializedServices) => {
 	const verifyJWT = createVerifyJWT(services.settingsService);
 	const authRoutes = new AuthRoutes(controllers.authController, verifyJWT);
 	const monitorRoutes = new MonitorRoutes(controllers.monitorController);
diff --git a/server/src/controllers/settingsController.ts b/server/src/controllers/settingsController.ts
index ca011889f..03bc91898 100644
--- a/server/src/controllers/settingsController.ts
+++ b/server/src/controllers/settingsController.ts
@@ -3,6 +3,7 @@ import { updateAppSettingsBodyValidation } from "@/validation/settingsValidation
 import { sendTestEmailBodyValidation } from "@/validation/notificationValidation.js";
 import { AppError } from "@/utils/AppError.js";
 import { IEmailService, ISettingsService } from "@/service/index.js";
+import { Settings } from "@/types/settings.js";
 
 const SERVICE_NAME = "SettingsController";
 
@@ -26,11 +27,11 @@ class SettingsController implements ISettingsController {
 		return SettingsController.SERVICE_NAME;
 	}
 
-	buildAppSettings = (dbSettings: any) => {
-		const sanitizedSettings = { ...dbSettings };
+	buildAppSettings = (dbSettings: Settings) => {
+		const sanitizedSettings: Record<string, unknown> = { ...dbSettings };
 		delete sanitizedSettings.version;
 		delete sanitizedSettings.jwtSecret;
-		const returnSettings = {
+		const returnSettings: Record<string, unknown | null> = {
 			pagespeedKeySet: false,
 			emailPasswordSet: false,
 			settings: null,
diff --git a/server/src/middleware/verifyJWT.ts b/server/src/middleware/verifyJWT.ts
index 4bec4c077..63218566c 100644
--- a/server/src/middleware/verifyJWT.ts
+++ b/server/src/middleware/verifyJWT.ts
@@ -2,7 +2,7 @@ import { NextFunction, Request, Response } from "express";
 
 import jwt from "jsonwebtoken";
 import { AppError } from "@/utils/AppError.js";
-import { Settings } from "@/types/settings.js";
+import type { ISettingsService } from "@/service/system/settingsService.js";
 import type { User } from "@/types/user.js";
 
 const SERVICE_NAME = "verifyJWT";
@@ -12,7 +12,7 @@ const isUser = (payload: unknown): payload is User => {
 	return typeof payload === "object" && payload !== null && "id" in payload && "teamId" in payload && "role" in payload;
 };
 
-export const createVerifyJWT = (settingsService: { getSettings: () => Settings }) => {
+export const createVerifyJWT = (settingsService: ISettingsService) => {
 	return (req: Request, res: Response, next: NextFunction) => {
 		const token = req.headers["authorization"];
 		// Make sure a token is provided