diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index 75c5394d..32061bbd 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -8,6 +8,20 @@ def create
     redirect_to user_path user
   end
 
+  def create_developer # rubocop: disable Metrics/AbcSize
+    user = User.find_or_create_by!(
+      email: params[:email]
+    ) do |u|
+      u.firstname = params[:firstname]
+      u.lastname = params[:lastname]
+      u.room = params[:room]
+    end
+    user.groups = params[:groups].split(',')
+    log_in user
+    flash[:success] = 'You are now logged in (using developer method)!'
+    redirect_to user
+  end
+
   def destroy
     log_out
     flash[:success] = 'You are now logged out!'
diff --git a/app/views/layouts/_header.html.erb b/app/views/layouts/_header.html.erb
index 3c58ed8f..4c95e856 100644
--- a/app/views/layouts/_header.html.erb
+++ b/app/views/layouts/_header.html.erb
@@ -26,6 +26,15 @@
             'aria-label': "Log in",
             data: { turbo: false }
           ) %>
+      <% if Rails.env.development? %>
+        <%= button_to(
+              "Login (developer)",
+              "/auth/developer",
+              class: "login_button",
+              'aria-label': "Log in (developer)",
+              data: { turbo: false }
+            ) %>
+      <% end %>
     <% else %>
       <%= button_to(
             "Logout",
diff --git a/config/initializers/omniauth.rb b/config/initializers/omniauth.rb
index d667188a..bade59e6 100644
--- a/config/initializers/omniauth.rb
+++ b/config/initializers/omniauth.rb
@@ -1,17 +1,9 @@
 # frozen_string_literal: true
 
 Rails.application.config.middleware.use OmniAuth::Builder do
-  if Rails.env.production?
-    client_options = {
-      identifier: Rails.application.credentials.sso_id!,
-      secret: Rails.application.credentials.sso_secret!,
-      redirect_uri: "https://lea5.rezoleo.fr/#{AUTH_CALLBACK_PATH}"
-    }
-  elsif Rails.env.development?
-    client_options = {
-      identifier: Rails.application.credentials.sso_id!,
-      secret: Rails.application.credentials.sso_secret!,
-      redirect_uri: "http://127.0.0.1:3000/#{AUTH_CALLBACK_PATH}"
+  if Rails.env.development?
+    provider :developer, {
+      fields: [:firstname, :lastname, :email, :room, :groups]
     }
   end
 
@@ -25,6 +17,22 @@
     issuer: 'https://auth.rezoleo.fr/realms/rezoleo',
     discovery: true,
     pkce: true,
-    client_options: client_options
+    client_options: oidc_client_options
   }
 end
+
+def oidc_client_options
+  if Rails.env.production?
+    {
+      identifier: Rails.application.credentials.sso_id!,
+      secret: Rails.application.credentials.sso_secret!,
+      redirect_uri: "https://lea5.rezoleo.fr/#{AUTH_CALLBACK_PATH}"
+    }
+  elsif Rails.env.development?
+    {
+      identifier: Rails.application.credentials.sso_id!,
+      secret: Rails.application.credentials.sso_secret!,
+      redirect_uri: "http://127.0.0.1:3000/#{AUTH_CALLBACK_PATH}"
+    }
+  end
+end
diff --git a/config/routes.rb b/config/routes.rb
index 88c0d3f2..f41275d2 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -3,6 +3,10 @@
 Rails.application.routes.draw do
   # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
   get AUTH_CALLBACK_PATH, to: 'sessions#create', as: 'auth_callback'
+  if Rails.env.development?
+    get '/auth/developer/callback', to: 'sessions#create_developer', as: 'auth_callback_developer'
+  end
+
   delete '/logout', to: 'sessions#destroy', as: 'logout'
   root 'static_pages#home'