diff --git a/MalwareMultiScan.Api/Services/ScanResultService.cs b/MalwareMultiScan.Api/Services/ScanResultService.cs
index 7a906c2..241bcce 100644
--- a/MalwareMultiScan.Api/Services/ScanResultService.cs
+++ b/MalwareMultiScan.Api/Services/ScanResultService.cs
@@ -7,6 +7,7 @@ using Hangfire;
 using Hangfire.States;
 using MalwareMultiScan.Api.Data;
 using MalwareMultiScan.Api.Services.Interfaces;
+using MalwareMultiScan.Shared.Enums;
 using MalwareMultiScan.Shared.Message;
 using MalwareMultiScan.Shared.Services.Interfaces;
 using MongoDB.Bson;
@@ -71,7 +72,10 @@ namespace MalwareMultiScan.Api.Services
         public async Task UpdateScanResultForBackend(string resultId, string backendId,
             ScanResultMessage result = null)
         {
-            result ??= new ScanResultMessage();
+            result ??= new ScanResultMessage
+            {
+                Status = ScanResultStatus.Queued
+            };
 
             await _collection.UpdateOneAsync(
                 Builders<ScanResult>.Filter.Where(r => r.Id == resultId),
diff --git a/MalwareMultiScan.Backends/MalwareMultiScan.Backends.csproj b/MalwareMultiScan.Backends/MalwareMultiScan.Backends.csproj
index e62ad89..dfa620b 100644
--- a/MalwareMultiScan.Backends/MalwareMultiScan.Backends.csproj
+++ b/MalwareMultiScan.Backends/MalwareMultiScan.Backends.csproj
@@ -4,8 +4,8 @@
         <TargetFramework>netcoreapp3.1</TargetFramework>
         <Company>Volodymyr Smirnov</Company>
         <Product>MalwareMultiScan Backends</Product>
-        <AssemblyVersion>1.0.0</AssemblyVersion>
-        <FileVersion>1.0.0</FileVersion>
+        <AssemblyVersion>1.5.0</AssemblyVersion>
+        <FileVersion>1.5.0</FileVersion>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
     </PropertyGroup>
     
diff --git a/MalwareMultiScan.ScannerWorker/MalwareMultiScan.ScannerWorker.csproj b/MalwareMultiScan.Scanner/MalwareMultiScan.Scanner.csproj
similarity index 52%
rename from MalwareMultiScan.ScannerWorker/MalwareMultiScan.ScannerWorker.csproj
rename to MalwareMultiScan.Scanner/MalwareMultiScan.Scanner.csproj
index b69ce1f..19e6ff6 100644
--- a/MalwareMultiScan.ScannerWorker/MalwareMultiScan.ScannerWorker.csproj
+++ b/MalwareMultiScan.Scanner/MalwareMultiScan.Scanner.csproj
@@ -1,15 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk.Worker">
     <PropertyGroup>
         <TargetFramework>netcoreapp3.1</TargetFramework>
+        <Company>Volodymyr Smirnov</Company>
+        <Product>MalwareMultiScan Scanner</Product>
+        <AssemblyVersion>1.5.0</AssemblyVersion>
+        <FileVersion>1.5.0</FileVersion>
+        <GenerateDocumentationFile>true</GenerateDocumentationFile>
     </PropertyGroup>
 
     <ItemGroup>
       <ProjectReference Include="..\MalwareMultiScan.Backends\MalwareMultiScan.Backends.csproj" />
     </ItemGroup>
-
-    <ItemGroup>
-      <PackageReference Include="Hangfire" Version="1.7.17" />
-      <PackageReference Include="Hangfire.AspNetCore" Version="1.7.17" />
-      <PackageReference Include="HangFire.Redis.StackExchange" Version="1.8.4" />
-    </ItemGroup>
 </Project>
diff --git a/MalwareMultiScan.ScannerWorker/Program.cs b/MalwareMultiScan.Scanner/Program.cs
similarity index 89%
rename from MalwareMultiScan.ScannerWorker/Program.cs
rename to MalwareMultiScan.Scanner/Program.cs
index d56c958..1339b20 100644
--- a/MalwareMultiScan.ScannerWorker/Program.cs
+++ b/MalwareMultiScan.Scanner/Program.cs
@@ -1,10 +1,8 @@
 using System.Threading.Tasks;
-using Hangfire;
-using MalwareMultiScan.Backends.Backends.Interfaces;
 using MalwareMultiScan.Backends.Extensions;
 using MalwareMultiScan.Backends.Services.Implementations;
 using MalwareMultiScan.Backends.Services.Interfaces;
-using MalwareMultiScan.ScannerWorker.Services;
+using MalwareMultiScan.Scanner.Services;
 using MalwareMultiScan.Shared.Extensions;
 using MalwareMultiScan.Shared.Services.Interfaces;
 using Microsoft.Extensions.Configuration;
@@ -12,9 +10,9 @@ using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 
-namespace MalwareMultiScan.ScannerWorker
+namespace MalwareMultiScan.Scanner
 {
-    public static class Program
+    internal static class Program
     {
         public static async Task Main(string[] args)
         {
diff --git a/MalwareMultiScan.ScannerWorker/Properties/launchSettings.json b/MalwareMultiScan.Scanner/Properties/launchSettings.json
similarity index 100%
rename from MalwareMultiScan.ScannerWorker/Properties/launchSettings.json
rename to MalwareMultiScan.Scanner/Properties/launchSettings.json
diff --git a/MalwareMultiScan.ScannerWorker/Services/ConsulHostedService.cs b/MalwareMultiScan.Scanner/Services/ConsulHostedService.cs
similarity index 95%
rename from MalwareMultiScan.ScannerWorker/Services/ConsulHostedService.cs
rename to MalwareMultiScan.Scanner/Services/ConsulHostedService.cs
index 0f45532..1e10ead 100644
--- a/MalwareMultiScan.ScannerWorker/Services/ConsulHostedService.cs
+++ b/MalwareMultiScan.Scanner/Services/ConsulHostedService.cs
@@ -8,7 +8,7 @@ using MalwareMultiScan.Backends.Backends.Interfaces;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Hosting;
 
-namespace MalwareMultiScan.ScannerWorker.Services
+namespace MalwareMultiScan.Scanner.Services
 {
     public class ConsulHostedService : BackgroundService
     {
@@ -17,7 +17,7 @@ namespace MalwareMultiScan.ScannerWorker.Services
 
         private readonly IConsulClient _consulClient;
         private readonly AgentServiceRegistration _registration;
-
+        
         public ConsulHostedService(
             IConsulClient consulClient,
             IConfiguration configuration,
@@ -37,6 +37,7 @@ namespace MalwareMultiScan.ScannerWorker.Services
             };
         }
 
+        /// <inheritdoc />
         protected override async Task ExecuteAsync(CancellationToken stoppingToken)
         {
             while (!stoppingToken.IsCancellationRequested)
@@ -48,6 +49,7 @@ namespace MalwareMultiScan.ScannerWorker.Services
             }
         }
 
+        /// <inheritdoc />
         public override async Task StartAsync(CancellationToken cancellationToken)
         {
             await _consulClient.Agent.ServiceDeregister(
@@ -68,6 +70,7 @@ namespace MalwareMultiScan.ScannerWorker.Services
             await base.StartAsync(cancellationToken);
         }
 
+        /// <inheritdoc />
         public override async Task StopAsync(CancellationToken cancellationToken)
         {
             await _consulClient.Agent.ServiceDeregister(
diff --git a/MalwareMultiScan.ScannerWorker/Services/ScanBackgroundJob.cs b/MalwareMultiScan.Scanner/Services/ScanBackgroundJob.cs
similarity index 94%
rename from MalwareMultiScan.ScannerWorker/Services/ScanBackgroundJob.cs
rename to MalwareMultiScan.Scanner/Services/ScanBackgroundJob.cs
index 7f16f91..9f04b7a 100644
--- a/MalwareMultiScan.ScannerWorker/Services/ScanBackgroundJob.cs
+++ b/MalwareMultiScan.Scanner/Services/ScanBackgroundJob.cs
@@ -11,7 +11,7 @@ using MalwareMultiScan.Shared.Services.Interfaces;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 
-namespace MalwareMultiScan.ScannerWorker.Services
+namespace MalwareMultiScan.Scanner.Services
 {
     /// <inheritdoc />
     public class ScanBackgroundJob : IScanBackgroundJob
@@ -51,7 +51,10 @@ namespace MalwareMultiScan.ScannerWorker.Services
 
             var cancellationToken = cancellationTokenSource.Token;
 
-            var result = new ScanResultMessage();
+            var result = new ScanResultMessage
+            {
+                Status = ScanResultStatus.Queued
+            };
 
             var stopwatch = new Stopwatch();
 
diff --git a/MalwareMultiScan.ScannerWorker/appsettings.json b/MalwareMultiScan.Scanner/appsettings.json
similarity index 76%
rename from MalwareMultiScan.ScannerWorker/appsettings.json
rename to MalwareMultiScan.Scanner/appsettings.json
index 5f5379c..1083ca6 100644
--- a/MalwareMultiScan.ScannerWorker/appsettings.json
+++ b/MalwareMultiScan.Scanner/appsettings.json
@@ -5,5 +5,6 @@
   "CONSUL_SERVICE_NAME": "scanner",
   
   "BACKEND_ID": "dummy",
-  "MAX_SCANNING_TIME": 60
+  "MAX_SCANNING_TIME": 60,
+  "WORKER_COUNT": 4
 }
diff --git a/MalwareMultiScan.Shared/Enums/ScanResultStatus.cs b/MalwareMultiScan.Shared/Enums/ScanResultStatus.cs
index f3b9178..0f2ab06 100644
--- a/MalwareMultiScan.Shared/Enums/ScanResultStatus.cs
+++ b/MalwareMultiScan.Shared/Enums/ScanResultStatus.cs
@@ -1,9 +1,23 @@
 namespace MalwareMultiScan.Shared.Enums
 {
+    /// <summary>
+    /// Scan result status.
+    /// </summary>
     public enum ScanResultStatus
     {
+        /// <summary>
+        /// Scan is queued.
+        /// </summary>
         Queued,
+        
+        /// <summary>
+        /// Scan succeeded.
+        /// </summary>
         Succeeded,
+        
+        /// <summary>
+        /// Scan failed.
+        /// </summary>
         Failed
     }
 }
\ No newline at end of file
diff --git a/MalwareMultiScan.Shared/Extensions/ServiceCollectionExtensions.cs b/MalwareMultiScan.Shared/Extensions/ServiceCollectionExtensions.cs
index d2fbbf3..730ade3 100644
--- a/MalwareMultiScan.Shared/Extensions/ServiceCollectionExtensions.cs
+++ b/MalwareMultiScan.Shared/Extensions/ServiceCollectionExtensions.cs
@@ -1,7 +1,6 @@
 using System;
 using Consul;
 using Hangfire;
-using Hangfire.Redis;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 
@@ -25,6 +24,12 @@ namespace MalwareMultiScan.Shared.Extensions
             }));
         }
         
+        /// <summary>
+        /// Add Hangfire with Redis storage.
+        /// </summary>
+        /// <param name="services">Service collection.</param>
+        /// <param name="configuration">Configuration.</param>
+        /// <param name="queues">Queue names.</param>
         public static void AddHangfire(this IServiceCollection services, 
             IConfiguration configuration, params string[] queues)
         {
@@ -34,7 +39,19 @@ namespace MalwareMultiScan.Shared.Extensions
             services.AddHangfire(options => 
                 options.UseRedisStorage(configuration.GetValue<string>("REDIS_ADDRESS")));
             
-            services.AddHangfireServer(options => options.Queues = queues);
+            services.AddHangfireServer(options =>
+            {
+                options.Queues = queues;
+                
+                options.ServerTimeout = TimeSpan.FromSeconds(30);
+                options.HeartbeatInterval = TimeSpan.FromSeconds(5);
+                options.ServerCheckInterval = TimeSpan.FromSeconds(15);
+                
+                var workerCount = configuration.GetValue<int>("WORKER_COUNT");
+
+                if (workerCount > 0)
+                    options.WorkerCount = workerCount;
+            });
         }
     }
 }
\ No newline at end of file
diff --git a/MalwareMultiScan.Shared/MalwareMultiScan.Shared.csproj b/MalwareMultiScan.Shared/MalwareMultiScan.Shared.csproj
index b69f6ae..4f90da1 100644
--- a/MalwareMultiScan.Shared/MalwareMultiScan.Shared.csproj
+++ b/MalwareMultiScan.Shared/MalwareMultiScan.Shared.csproj
@@ -1,6 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <TargetFramework>netcoreapp3.1</TargetFramework>
+        <Company>Volodymyr Smirnov</Company>
+        <Product>MalwareMultiScan Shared</Product>
+        <AssemblyVersion>1.5.0</AssemblyVersion>
+        <FileVersion>1.5.0</FileVersion>
+        <GenerateDocumentationFile>true</GenerateDocumentationFile>
     </PropertyGroup>
 
     <ItemGroup>
@@ -10,11 +15,5 @@
         <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="3.1.9" />
         <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="3.1.9" />
         <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="3.1.9" />
-        <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="3.1.9" />
-        <PackageReference Include="MongoDB.Bson" Version="2.11.3" />
-    </ItemGroup>
-
-    <ItemGroup>
-      <Folder Include="Services" />
     </ItemGroup>
 </Project>
diff --git a/MalwareMultiScan.Shared/Message/ScanQueueMessage.cs b/MalwareMultiScan.Shared/Message/ScanQueueMessage.cs
index d1afb1d..b900abb 100644
--- a/MalwareMultiScan.Shared/Message/ScanQueueMessage.cs
+++ b/MalwareMultiScan.Shared/Message/ScanQueueMessage.cs
@@ -2,9 +2,19 @@ using System;
 
 namespace MalwareMultiScan.Shared.Message
 {
+    /// <summary>
+    /// Scan queue message.
+    /// </summary>
     public class ScanQueueMessage
     {
+        /// <summary>
+        /// Scan result id.
+        /// </summary>
         public string Id { get; set; }
+        
+        /// <summary>
+        /// Scan file URL.
+        /// </summary>
         public Uri Uri { get; set; }
     }
 }
\ No newline at end of file
diff --git a/MalwareMultiScan.Shared/Message/ScanResultMessage.cs b/MalwareMultiScan.Shared/Message/ScanResultMessage.cs
index 8ed6a7a..e2d0727 100644
--- a/MalwareMultiScan.Shared/Message/ScanResultMessage.cs
+++ b/MalwareMultiScan.Shared/Message/ScanResultMessage.cs
@@ -2,12 +2,24 @@ using MalwareMultiScan.Shared.Enums;
 
 namespace MalwareMultiScan.Shared.Message
 {
+    /// <summary>
+    /// Scan result message.
+    /// </summary>
     public class ScanResultMessage
     {
+        /// <summary>
+        /// Scan status.
+        /// </summary>
         public ScanResultStatus Status { get; set; }
 
+        /// <summary>
+        /// Scan duration in seconds.
+        /// </summary>
         public long Duration { get; set; }
 
+        /// <summary>
+        /// Detected threats.
+        /// </summary>
         public string[] Threats { get; set; }
     }
 }
\ No newline at end of file
diff --git a/MalwareMultiScan.Shared/Services/Interfaces/IScanBackgroundJob.cs b/MalwareMultiScan.Shared/Services/Interfaces/IScanBackgroundJob.cs
index d552b81..ae26ee7 100644
--- a/MalwareMultiScan.Shared/Services/Interfaces/IScanBackgroundJob.cs
+++ b/MalwareMultiScan.Shared/Services/Interfaces/IScanBackgroundJob.cs
@@ -4,9 +4,16 @@ using MalwareMultiScan.Shared.Message;
 
 namespace MalwareMultiScan.Shared.Services.Interfaces
 {
+    /// <summary>
+    /// Scan background job.
+    /// </summary>
     [AutomaticRetry(Attempts = 0, OnAttemptsExceeded = AttemptsExceededAction.Delete)]
     public interface IScanBackgroundJob
     {
+        /// <summary>
+        /// Start scan.
+        /// </summary>
+        /// <param name="message">Scan queue message.</param>
         Task Process(ScanQueueMessage message);
     }
 }
\ No newline at end of file
diff --git a/MalwareMultiScan.Shared/Services/Interfaces/IScanResultJob.cs b/MalwareMultiScan.Shared/Services/Interfaces/IScanResultJob.cs
index 13c8f02..63f4237 100644
--- a/MalwareMultiScan.Shared/Services/Interfaces/IScanResultJob.cs
+++ b/MalwareMultiScan.Shared/Services/Interfaces/IScanResultJob.cs
@@ -5,11 +5,27 @@ using MalwareMultiScan.Shared.Message;
 
 namespace MalwareMultiScan.Shared.Services.Interfaces
 {
+    /// <summary>
+    /// Scan background result job.
+    /// </summary>
     public interface IScanResultJob
     {
+        /// <summary>
+        /// Report job status.
+        /// </summary>
+        /// <param name="resultId">Result id.</param>
+        /// <param name="backendId">Backend id.</param>
+        /// <param name="result">Scan result.</param>
         [AutomaticRetry(Attempts = 0, OnAttemptsExceeded = AttemptsExceededAction.Delete)]
         Task Report(string resultId, string backendId, ScanResultMessage result);
         
+        /// <summary>
+        /// Notify remote URL on scan result.
+        /// </summary>
+        /// <param name="uri">Base URL.</param>
+        /// <param name="resultId">Result id.</param>
+        /// <param name="backendId">Backend id.</param>
+        /// <param name="result">Scan result.</param>
         [AutomaticRetry(Attempts = 0, OnAttemptsExceeded = AttemptsExceededAction.Delete)]
         Task Notify(Uri uri, string resultId, string backendId, ScanResultMessage result);
     }
diff --git a/MalwareMultiScan.sln b/MalwareMultiScan.sln
index bc27750..6401eb7 100644
--- a/MalwareMultiScan.sln
+++ b/MalwareMultiScan.sln
@@ -15,7 +15,7 @@ EndProjectSection
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MalwareMultiScan.Tests", "MalwareMultiScan.Tests\MalwareMultiScan.Tests.csproj", "{9896162D-8FC7-4911-933F-A78C94128923}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MalwareMultiScan.ScannerWorker", "MalwareMultiScan.ScannerWorker\MalwareMultiScan.ScannerWorker.csproj", "{D36ED4DD-4EEA-4609-8AED-B2FD496E4C90}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MalwareMultiScan.Scanner", "MalwareMultiScan.Scanner\MalwareMultiScan.Scanner.csproj", "{D36ED4DD-4EEA-4609-8AED-B2FD496E4C90}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MalwareMultiScan.Shared", "MalwareMultiScan.Shared\MalwareMultiScan.Shared.csproj", "{534E3C92-FD6D-401C-99D4-792DB11B57AE}"
 EndProject