diff --git a/README.md b/README.md
index aed4da610..e24561d42 100644
--- a/README.md
+++ b/README.md
@@ -294,7 +294,7 @@ You can start your local development environment by running the following comman
 docker compose up
 ```
 
-Refer to `db/seeds.rb` for credentials on how to login using the seed users.
+Refer to `lib/seed/constants.rb` for credentials on how to login using the seed users.
 
 Below are some common commands you can use via `just`:
 
diff --git a/db/seeds.rb b/db/seeds.rb
index c069b4606..58581b0ba 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -1,94 +1,3 @@
 # rubocop:disable Rails/Output
-puts "Seeding database..."
-
-# Admin user
-# ----------
-ADMIN_FULL_NAME = "Admin User"
-ADMIN_PREFERRED_NAME = "Admin"
-ADMIN_EMAIL = "admin@tramline.app"
-ADMIN_PASSWORD = "why aroma enclose startup"
-
-admin_user = lambda do
-  email_authentication = Accounts::EmailAuthentication.find_or_initialize_by(email: ADMIN_EMAIL)
-  admin = true
-
-  unless email_authentication.persisted?
-    user = Accounts::User.find_or_create_by!(full_name: ADMIN_FULL_NAME, preferred_name: ADMIN_PREFERRED_NAME, admin:, unique_authn_id: ADMIN_EMAIL)
-    email_authentication.update!(password: ADMIN_PASSWORD, confirmed_at: DateTime.now, user:)
-  end
-
-  puts "Added/updated admin user."
-end
-
-# Owner user
-# --------------
-OWNER_FULL_NAME = "Owner User"
-OWNER_PREFERRED_NAME = "Owner"
-OWNER_EMAIL = "owner@tramline.app"
-OWNER_PASSWORD = "why aroma enclose startup"
-
-owner_user = lambda do
-  email_authentication = Accounts::EmailAuthentication.find_or_initialize_by(email: OWNER_EMAIL)
-
-  if email_authentication.persisted?
-    user = email_authentication.user
-  else
-    user = Accounts::User.find_or_create_by!(full_name: OWNER_FULL_NAME, preferred_name: OWNER_PREFERRED_NAME, unique_authn_id: OWNER_EMAIL)
-    email_authentication.update!(password: OWNER_PASSWORD, confirmed_at: DateTime.now, user:)
-    email_authentication.reload
-  end
-
-  organization = Accounts::Organization.find_or_create_by!(
-    name: "Tramline Test 1 (Owner)",
-    status: Accounts::Organization.statuses[:active],
-    created_by: email_authentication.email
-  )
-
-  Accounts::Membership.find_or_create_by!(
-    user:,
-    organization:,
-    role: Accounts::Membership.roles[:owner]
-  )
-
-  puts "Added/updated owner user."
-end
-
-# Developer user
-# --------------
-DEVELOPER_FULL_NAME = "Developer User"
-DEVELOPER_PREFERRED_NAME = "Developer"
-DEVELOPER_EMAIL = "developer@tramline.app"
-DEVELOPER_PASSWORD = "why aroma enclose startup"
-
-developer_user = lambda do
-  email_authentication = Accounts::EmailAuthentication.find_or_initialize_by(email: DEVELOPER_EMAIL)
-
-  if email_authentication.persisted?
-    user = email_authentication.user
-  else
-    user = Accounts::User.find_or_create_by!(full_name: DEVELOPER_FULL_NAME, preferred_name: DEVELOPER_PREFERRED_NAME, unique_authn_id: DEVELOPER_EMAIL)
-    email_authentication.update!(password: DEVELOPER_PASSWORD, confirmed_at: DateTime.now, user:)
-    email_authentication.reload
-  end
-
-  organization = Accounts::Organization.find_or_create_by!(
-    name: "Tramline Test 1 (Developer)",
-    status: Accounts::Organization.statuses[:active],
-    created_by: email_authentication.email
-  )
-
-  Accounts::Membership.find_or_create_by!(
-    user:,
-    organization:,
-    role: Accounts::Membership.roles[:developer]
-  )
-
-  puts "Added/updated developer user."
-end
-
-ActiveRecord::Base.transaction do
-  admin_user.call
-  owner_user.call
-  developer_user.call
-end
+Seed::DevStarter.call
 # rubocop:enable Rails/Output
diff --git a/lib/seed/constants.rb b/lib/seed/constants.rb
new file mode 100644
index 000000000..cbd647dc3
--- /dev/null
+++ b/lib/seed/constants.rb
@@ -0,0 +1,21 @@
+module Seed
+  module Constants
+    # admin constants
+    ADMIN_FULL_NAME = "Admin User"
+    ADMIN_PREFERRED_NAME = "Admin"
+    ADMIN_EMAIL = "admin@tramline.app"
+    ADMIN_PASSWORD = "why aroma enclose startup"
+
+    # owner constants
+    OWNER_FULL_NAME = "Owner User"
+    OWNER_PREFERRED_NAME = "Owner"
+    OWNER_EMAIL = "owner@tramline.app"
+    OWNER_PASSWORD = "why aroma enclose startup"
+
+    # developer constants
+    DEVELOPER_FULL_NAME = "Developer User"
+    DEVELOPER_PREFERRED_NAME = "Developer"
+    DEVELOPER_EMAIL = "developer@tramline.app"
+    DEVELOPER_PASSWORD = "why aroma enclose startup"
+  end
+end
diff --git a/lib/seed/dev_starter.rb b/lib/seed/dev_starter.rb
new file mode 100644
index 000000000..1a5d53aba
--- /dev/null
+++ b/lib/seed/dev_starter.rb
@@ -0,0 +1,89 @@
+# rubocop:disable Rails/Output
+
+module Seed
+  class DevStarter
+    include Seed::Constants
+
+    def call
+      puts "Seeding database..."
+
+      ActiveRecord::Base.transaction do
+        self.class.send(:create_admin_user)
+        self.class.send(:create_owner_user)
+        self.class.send(:create_developer_user)
+      end
+
+      puts "Completed seeding database"
+    end
+
+    def self.create_admin_user
+      email_authentication = Accounts::EmailAuthentication.find_or_initialize_by(email: ADMIN_EMAIL)
+      admin = true
+
+      unless email_authentication.persisted?
+        user = Accounts::User.find_or_create_by!(full_name: ADMIN_FULL_NAME, preferred_name: ADMIN_PREFERRED_NAME, admin:, unique_authn_id: ADMIN_EMAIL)
+        email_authentication.update!(password: ADMIN_PASSWORD, confirmed_at: DateTime.now, user:)
+      end
+
+      puts "Added/updated admin user."
+    end
+
+    def self.create_owner_user
+      email_authentication = Accounts::EmailAuthentication.find_or_initialize_by(email: OWNER_EMAIL)
+
+      if email_authentication.persisted?
+        user = email_authentication.user
+      else
+        user = Accounts::User.find_or_create_by!(full_name: OWNER_FULL_NAME, preferred_name: OWNER_PREFERRED_NAME, unique_authn_id: OWNER_EMAIL)
+        email_authentication.update!(password: OWNER_PASSWORD, confirmed_at: DateTime.now, user:)
+        email_authentication.reload
+      end
+
+      organization = Accounts::Organization.find_or_create_by!(
+        name: "Tramline Test 1 (Owner)",
+        status: Accounts::Organization.statuses[:active],
+        created_by: email_authentication.email
+      )
+
+      Accounts::Membership.find_or_create_by!(
+        user:,
+        organization:,
+        role: Accounts::Membership.roles[:owner]
+      )
+
+      puts "Added/updated owner user."
+    end
+
+    def self.create_developer_user
+      email_authentication = Accounts::EmailAuthentication.find_or_initialize_by(email: DEVELOPER_EMAIL)
+
+      if email_authentication.persisted?
+        user = email_authentication.user
+      else
+        user = Accounts::User.find_or_create_by!(full_name: DEVELOPER_FULL_NAME, preferred_name: DEVELOPER_PREFERRED_NAME, unique_authn_id: DEVELOPER_EMAIL)
+        email_authentication.update!(password: DEVELOPER_PASSWORD, confirmed_at: DateTime.now, user:)
+        email_authentication.reload
+      end
+
+      organization = Accounts::Organization.find_or_create_by!(
+        name: "Tramline Test 1 (Developer)",
+        status: Accounts::Organization.statuses[:active],
+        created_by: email_authentication.email
+      )
+
+      Accounts::Membership.find_or_create_by!(
+        user:,
+        organization:,
+        role: Accounts::Membership.roles[:developer]
+      )
+
+      puts "Added/updated developer user."
+    end
+
+    private_class_method :create_admin_user
+    private_class_method :create_owner_user
+    private_class_method :create_developer_user
+  end
+end
+
+# rubocop:enable Rails/Output