diff --git a/docker/backend/db/migrations/20220205143534_init.sql b/docker/backend/db/migrations/20220205143534_init.sql
index 30aa730..e95ed09 100644
--- a/docker/backend/db/migrations/20220205143534_init.sql
+++ b/docker/backend/db/migrations/20220205143534_init.sql
@@ -17,7 +17,7 @@
  */
 -- +micrate Up
 -- SQL in section ' Up ' is executed when this migration is applied
-CREATE TYPE user_roles AS ENUM (' Teacher ', ' Student ');
+CREATE TYPE user_roles AS ENUM ('Teacher', 'Student');
 
 CREATE TABLE users(
   id BIGSERIAL PRIMARY KEY,
diff --git a/docker/backend/shard.lock b/docker/backend/shard.lock
index d643463..6e985a0 100644
--- a/docker/backend/shard.lock
+++ b/docker/backend/shard.lock
@@ -108,6 +108,10 @@ shards:
     git: https://github.com/spider-gazelle/secrets-env.git
     version: 1.3.1
 
+  service:
+    git: https://git.dergrimm.net/dergrimm/service.git
+    version: 0.1.0
+
   shard:
     git: https://github.com/maiha/shard.cr.git
     version: 0.3.1
diff --git a/docker/backend/shard.yml b/docker/backend/shard.yml
index 94d1140..db684c4 100644
--- a/docker/backend/shard.yml
+++ b/docker/backend/shard.yml
@@ -66,3 +66,5 @@ dependencies:
     github: maiha/shard.cr
   retriable:
     github: Sija/retriable.cr
+  service:
+    git: https://git.dergrimm.net/dergrimm/service.git
diff --git a/docker/backend/src/backend.cr b/docker/backend/src/backend.cr
index 71f704f..9efb84a 100644
--- a/docker/backend/src/backend.cr
+++ b/docker/backend/src/backend.cr
@@ -14,8 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-require "retriable/core_ext/kernel"
-
 require "./backend/*"
 
 # Base module
diff --git a/docker/backend/src/backend/api.cr b/docker/backend/src/backend/api.cr
index 30e6c92..de67362 100644
--- a/docker/backend/src/backend/api.cr
+++ b/docker/backend/src/backend/api.cr
@@ -14,6 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+require "./api/service"
 require "./api/*"
 
 # Api module
diff --git a/docker/backend/src/backend/api/run.cr b/docker/backend/src/backend/api/run.cr
deleted file mode 100644
index 6820443..0000000
--- a/docker/backend/src/backend/api/run.cr
+++ /dev/null
@@ -1,28 +0,0 @@
-# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
-# Copyright (C) 2022  Dominic Grimm
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-require "http/server"
-
-module Backend
-  module Api
-    extend self
-
-    # Runs API
-    def run : Nil
-      WebServer.new.run
-    end
-  end
-end
diff --git a/docker/backend/src/backend/api/service.cr b/docker/backend/src/backend/api/service.cr
index 2b62175..929b0cf 100644
--- a/docker/backend/src/backend/api/service.cr
+++ b/docker/backend/src/backend/api/service.cr
@@ -14,13 +14,23 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+require "service"
+require "log"
+
 module Backend
   module Api
-    # Api service
-    SERVICE = ->do
-      Log.info { "Starting Api service..." }
-      run
-      Log.info { "Api service stopped." }
+    # API service
+    class Service < ::Service
+      Log = ::Log.for(self)
+
+      # Runs API service
+      def run(_unit : ::Service::Unit) : ::Service::Unit?
+        Log.info { "Starting Api service..." }
+        WebServer.new.run
+        Log.info { "Api service stopped." }
+
+        ::Service::Unit.new(self)
+      end
     end
   end
 end
diff --git a/docker/backend/src/backend/run.cr b/docker/backend/src/backend/run.cr
deleted file mode 100644
index b650a46..0000000
--- a/docker/backend/src/backend/run.cr
+++ /dev/null
@@ -1,58 +0,0 @@
-# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
-# Copyright (C) 2022  Dominic Grimm
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-module Backend
-  extend self
-
-  # Runs backend services
-  def run : Nil
-    {% if flag?(:development) %}
-      Log.warn { "Backend is running in development mode! Do not use this in production!" }
-    {% end %}
-
-    Log.info { "Checking if DB schema is up to date..." }
-    retry(backoff: false, base_interval: 10.seconds, multiplier: 1.0) do
-      case retry(on: DB::ConnectionRefused, backoff: false) do
-        Db.schema_up_to_date_compare
-      end
-      when nil
-        Log.fatal { "No database schema is applied. Please run `bash scripts/micrate.sh up` urgently!" }
-        raise Exception.new
-      when -1
-        Log.warn { "Database schema is not up to date. Please run `bash scripts/micrate.sh up`." }
-      when 0
-        Log.info { "Database schema is up to date." }
-      else
-        Log.warn { "Database schema is maybe up to date but not consistent. Please run `bash scripts/micrate.sh up` to be safe." }
-      end
-    end
-
-    Log.info { "Starting services..." }
-    channel = Channel(Nil).new(SERVICES.size)
-    SERVICES.each do |service|
-      spawn do
-        service.call
-        channel.send(nil)
-      end
-    end
-    SERVICES.size.times do
-      channel.receive
-    end
-    Fiber.yield
-
-    Log.info { "Backend services started." }
-  end
-end
diff --git a/docker/backend/src/backend/runner.cr b/docker/backend/src/backend/runner.cr
new file mode 100644
index 0000000..fa4f079
--- /dev/null
+++ b/docker/backend/src/backend/runner.cr
@@ -0,0 +1,64 @@
+# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
+# Copyright (C) 2022  Dominic Grimm
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+require "service"
+require "log"
+require "retriable"
+
+module Backend
+  # Backend runner
+  class Runner < Service::Runner
+    Log = ::Log.for(self)
+
+    # Service starters
+    def starters : Array(Service::Starter)
+      [
+        Service::SynchronousStarter.new([
+          Api::Service.new.as(Service),
+          Worker::Service.new.as(Service),
+        ] of Service).as(Service::Starter),
+      ]
+    end
+
+    # Run the backend
+    def run : self
+      {% if flag?(:development) %}
+        Log.warn { "Backend is running in development mode! Do not use this in production!" }
+      {% end %}
+
+      Log.info { "Checking if DB schema is up to date..." }
+      Retriable.retry(backoff: false, base_interval: 10.seconds, multiplier: 1.0) do
+        case Retriable.retry(on: DB::ConnectionRefused, backoff: false) do
+          Db.schema_up_to_date_compare
+        end
+        when nil
+          Log.fatal { "No database schema is applied. Please run `bash scripts/micrate.sh up` urgently!" }
+          raise Exception.new
+        when -1
+          Log.warn { "Database schema is not up to date. Please run `bash scripts/micrate.sh up`." }
+        when 0
+          Log.info { "Database schema is up to date." }
+        else
+          Log.warn { "Database schema is maybe up to date but not consistent. Please run `bash scripts/micrate.sh up` to be safe." }
+        end
+      end
+
+      Log.info { "Starting services..." }
+
+      super
+    end
+  end
+end
diff --git a/docker/backend/src/backend/services.cr b/docker/backend/src/backend/services.cr
deleted file mode 100644
index 351b924..0000000
--- a/docker/backend/src/backend/services.cr
+++ /dev/null
@@ -1,23 +0,0 @@
-# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
-# Copyright (C) 2022  Dominic Grimm
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-module Backend
-  # Backend services to be included in the application
-  SERVICES = [
-    Api::SERVICE,
-    Worker::SERVICE,
-  ]
-end
diff --git a/docker/backend/src/backend/worker/run.cr b/docker/backend/src/backend/worker/run.cr
deleted file mode 100644
index a9a045d..0000000
--- a/docker/backend/src/backend/worker/run.cr
+++ /dev/null
@@ -1,26 +0,0 @@
-# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
-# Copyright (C) 2022  Dominic Grimm
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-module Backend
-  module Worker
-    extend self
-
-    # Runs the worker
-    def run : Nil
-      Mosquito::Runner.start
-    end
-  end
-end
diff --git a/docker/backend/src/backend/worker/service.cr b/docker/backend/src/backend/worker/service.cr
index 0871c79..1229aef 100644
--- a/docker/backend/src/backend/worker/service.cr
+++ b/docker/backend/src/backend/worker/service.cr
@@ -14,13 +14,23 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+require "service"
+require "log"
+
 module Backend
   module Worker
     # Worker service
-    SERVICE = ->do
-      Log.info { "Starting worker service..." }
-      run
-      Log.info { "Worker service stopped." }
+    class Service < ::Service
+      Log = ::Log.for(self)
+
+      # Runs worker service
+      def run(_unit : ::Service::Unit) : ::Service::Unit?
+        Log.info { "Starting worker service..." }
+        Mosquito::Runner.start
+        Log.info { "Worker service stopped." }
+
+        ::Service::Unit.new(self)
+      end
     end
   end
 end
diff --git a/docker/backend/src/cli/backend.cr b/docker/backend/src/cli/backend.cr
index 33d7930..83176e3 100644
--- a/docker/backend/src/cli/backend.cr
+++ b/docker/backend/src/cli/backend.cr
@@ -61,7 +61,7 @@ cli = Commander::Command.new do |cmd|
     c.long = c.short
 
     c.run do
-      Backend.run
+      Backend::Runner.new.run
     end
   end