diff --git a/backend/src/__tests__/cli.test.js b/backend/src/__tests__/cli.test.js
index e5d1949..2f66ef2 100644
--- a/backend/src/__tests__/cli.test.js
+++ b/backend/src/__tests__/cli.test.js
@@ -7,8 +7,10 @@ const {
   cmdEventsParticipants,
   cmdMatchesList,
 } = require('../cli/index');
+const { MATCH_STATUS } = require('../constants');
 
 jest.mock('../utils/db', () => {
+  const { MATCH_STATUS } = require('../constants');
   const mock = {
     user: {
       findMany: jest.fn().mockResolvedValue([
@@ -64,7 +66,7 @@ jest.mock('../utils/db', () => {
     },
     match: {
       findMany: jest.fn().mockResolvedValue([
-        { id: 301, slug: 'm1', status: 'pending', createdAt: new Date('2025-05-01'), event: { id: 200, slug: 'warsaw-dance-2025', name: 'Warsaw Dance 2025' }, user1: { id: 10, username: 'john_doe' }, user2: { id: 11, username: 'sarah' } },
+        { id: 301, slug: 'm1', status: MATCH_STATUS.PENDING, createdAt: new Date('2025-05-01'), event: { id: 200, slug: 'warsaw-dance-2025', name: 'Warsaw Dance 2025' }, user1: { id: 10, username: 'john_doe' }, user2: { id: 11, username: 'sarah' } },
       ]),
     },
   };
diff --git a/backend/src/__tests__/dashboard.test.js b/backend/src/__tests__/dashboard.test.js
index d6f3a43..28f30a9 100644
--- a/backend/src/__tests__/dashboard.test.js
+++ b/backend/src/__tests__/dashboard.test.js
@@ -9,6 +9,7 @@ const request = require('supertest');
 const app = require('../app');
 const { PrismaClient } = require('@prisma/client');
 const { generateToken } = require('../utils/auth');
+const { MATCH_STATUS } = require('../constants');
 
 const prisma = new PrismaClient();
 
@@ -238,7 +239,7 @@ describe('Dashboard API', () => {
           user2Id: testUser2.id,
           eventId: testEvent.id,
           roomId: matchRoom.id,
-          status: 'accepted',
+          status: MATCH_STATUS.ACCEPTED,
         },
       });
 
@@ -262,7 +263,7 @@ describe('Dashboard API', () => {
           id: testEvent.id,
           name: testEvent.name,
         },
-        status: 'accepted',
+        status: MATCH_STATUS.ACCEPTED,
       });
     });
 
@@ -344,7 +345,7 @@ describe('Dashboard API', () => {
           user1Id: testUser2.id,
           user2Id: testUser.id,
           eventId: testEvent.id,
-          status: 'pending',
+          status: MATCH_STATUS.PENDING,
         },
       });
 
@@ -388,7 +389,7 @@ describe('Dashboard API', () => {
           user1Id: testUser.id,
           user2Id: testUser3.id,
           eventId: testEvent.id,
-          status: 'pending',
+          status: MATCH_STATUS.PENDING,
         },
       });
 
@@ -473,7 +474,7 @@ describe('Dashboard API', () => {
         where: {
           user1Id: testUser.id,
           user2Id: testUser2.id,
-          status: 'accepted',
+          status: MATCH_STATUS.ACCEPTED,
         },
         include: { room: true },
       });
diff --git a/backend/src/__tests__/socket-webrtc.test.js b/backend/src/__tests__/socket-webrtc.test.js
index 19a65a1..b133eaf 100644
--- a/backend/src/__tests__/socket-webrtc.test.js
+++ b/backend/src/__tests__/socket-webrtc.test.js
@@ -4,6 +4,7 @@ const { Server } = require('socket.io');
 const Client = require('socket.io-client');
 const { generateToken } = require('../utils/auth');
 const { prisma } = require('../utils/db');
+const { MATCH_STATUS } = require('../constants');
 
 describe('Socket.IO WebRTC Signaling', () => {
   let httpServer;
@@ -71,7 +72,7 @@ describe('Socket.IO WebRTC Signaling', () => {
         user2Id: testUser2.id,
         eventId: testEvent.id,
         roomId: chatRoom.id,
-        status: 'accepted',
+        status: MATCH_STATUS.ACCEPTED,
       },
     });
 
@@ -209,7 +210,7 @@ describe('Socket.IO WebRTC Signaling', () => {
           user2Id: testUser2.id, // Both same user
           eventId: testEvent.id,
           roomId: unauthorizedRoom.id,
-          status: 'accepted',
+          status: MATCH_STATUS.ACCEPTED,
         },
       });
 
diff --git a/backend/src/constants/index.js b/backend/src/constants/index.js
new file mode 100644
index 0000000..7d106fc
--- /dev/null
+++ b/backend/src/constants/index.js
@@ -0,0 +1,6 @@
+const { MATCH_STATUS, SUGGESTION_STATUS } = require('./statuses');
+
+module.exports = {
+  MATCH_STATUS,
+  SUGGESTION_STATUS,
+};
diff --git a/backend/src/constants/statuses.js b/backend/src/constants/statuses.js
new file mode 100644
index 0000000..429bb0c
--- /dev/null
+++ b/backend/src/constants/statuses.js
@@ -0,0 +1,24 @@
+/**
+ * Match status constants
+ */
+const MATCH_STATUS = {
+  PENDING: 'pending',
+  ACCEPTED: 'accepted',
+  REJECTED: 'rejected',
+  COMPLETED: 'completed',
+};
+
+/**
+ * Suggestion status constants (for auto-matching)
+ */
+const SUGGESTION_STATUS = {
+  PENDING: 'pending',
+  ACCEPTED: 'accepted',
+  REJECTED: 'rejected',
+  NOT_FOUND: 'not_found',
+};
+
+module.exports = {
+  MATCH_STATUS,
+  SUGGESTION_STATUS,
+};
diff --git a/backend/src/routes/dashboard.js b/backend/src/routes/dashboard.js
index 45cad1a..b2e4078 100644
--- a/backend/src/routes/dashboard.js
+++ b/backend/src/routes/dashboard.js
@@ -8,6 +8,7 @@ const router = express.Router();
 const { authenticate } = require('../middleware/auth');
 const { PrismaClient } = require('@prisma/client');
 const { getEventsOnlineCounts } = require('../socket');
+const { MATCH_STATUS } = require('../constants');
 
 const prisma = new PrismaClient();
 
@@ -101,7 +102,7 @@ router.get('/', authenticate, async (req, res, next) => {
           { user1Id: userId },
           { user2Id: userId },
         ],
-        status: 'accepted',
+        status: MATCH_STATUS.ACCEPTED,
       },
       include: {
         user1: {
@@ -219,7 +220,7 @@ router.get('/', authenticate, async (req, res, next) => {
     const incomingRequests = await prisma.match.findMany({
       where: {
         user2Id: userId,
-        status: 'pending',
+        status: MATCH_STATUS.PENDING,
       },
       include: {
         user1: {
@@ -298,7 +299,7 @@ router.get('/', authenticate, async (req, res, next) => {
     const outgoingRequests = await prisma.match.findMany({
       where: {
         user1Id: userId,
-        status: 'pending',
+        status: MATCH_STATUS.PENDING,
       },
       include: {
         user2: {
diff --git a/backend/src/routes/events.js b/backend/src/routes/events.js
index 08b4703..1acc4b2 100644
--- a/backend/src/routes/events.js
+++ b/backend/src/routes/events.js
@@ -3,6 +3,7 @@ const { prisma } = require('../utils/db');
 const { authenticate } = require('../middleware/auth');
 const { getIO } = require('../socket');
 const matchingService = require('../services/matching');
+const { SUGGESTION_STATUS } = require('../constants');
 
 const router = express.Router();
 
@@ -1122,8 +1123,8 @@ router.post('/:slug/run-matching', authenticate, async (req, res, next) => {
     const count = await matchingService.saveMatchingResults(event.id, suggestions);
 
     // Get statistics
-    const notFoundCount = suggestions.filter(s => s.status === 'not_found').length;
-    const matchedCount = suggestions.filter(s => s.status === 'pending').length;
+    const notFoundCount = suggestions.filter(s => s.status === SUGGESTION_STATUS.NOT_FOUND).length;
+    const matchedCount = suggestions.filter(s => s.status === SUGGESTION_STATUS.PENDING).length;
 
     res.json({
       success: true,
diff --git a/backend/src/routes/matches.js b/backend/src/routes/matches.js
index 60510e7..85b2af6 100644
--- a/backend/src/routes/matches.js
+++ b/backend/src/routes/matches.js
@@ -2,6 +2,7 @@ const express = require('express');
 const { prisma } = require('../utils/db');
 const { authenticate } = require('../middleware/auth');
 const { getIO } = require('../socket');
+const { MATCH_STATUS } = require('../constants');
 
 const router = express.Router();
 
@@ -98,7 +99,7 @@ router.post('/', authenticate, async (req, res, next) => {
         user1Id: requesterId,
         user2Id: targetUserId,
         eventId: event.id,
-        status: 'pending',
+        status: MATCH_STATUS.PENDING,
       },
       include: {
         user1: {
@@ -534,7 +535,7 @@ router.put('/:slug/accept', authenticate, async (req, res, next) => {
       const updated = await tx.match.update({
         where: { slug },
         data: {
-          status: 'accepted',
+          status: MATCH_STATUS.ACCEPTED,
           roomId: chatRoom.id,
         },
         include: {
@@ -828,7 +829,7 @@ router.post('/:slug/ratings', authenticate, async (req, res, next) => {
       // Both users have rated - mark match as completed
       await prisma.match.update({
         where: { id: match.id },
-        data: { status: 'completed' },
+        data: { status: MATCH_STATUS.COMPLETED },
       });
     }
 
diff --git a/backend/src/services/matching.js b/backend/src/services/matching.js
index 0358a47..e7f0fa2 100644
--- a/backend/src/services/matching.js
+++ b/backend/src/services/matching.js
@@ -10,6 +10,7 @@
  */
 
 const { prisma } = require('../utils/db');
+const { SUGGESTION_STATUS } = require('../constants');
 
 // Constants
 const MAX_RECORDINGS_PER_PERSON = 3;
@@ -267,7 +268,7 @@ async function runMatching(eventId) {
           eventId,
           heatId: heat.id,
           recorderId: null,
-          status: 'not_found',
+          status: SUGGESTION_STATUS.NOT_FOUND,
         });
         continue;
       }
@@ -285,7 +286,7 @@ async function runMatching(eventId) {
         eventId,
         heatId: heat.id,
         recorderId: best.recorder.userId,
-        status: 'pending',
+        status: SUGGESTION_STATUS.PENDING,
       });
 
       // Update assignment count