diff --git a/app/assets/javascripts/jobs/components/empty_state.vue b/app/assets/javascripts/jobs/components/empty_state.vue
index 04f910b6b80..275ed80146e 100644
--- a/app/assets/javascripts/jobs/components/empty_state.vue
+++ b/app/assets/javascripts/jobs/components/empty_state.vue
@@ -1,9 +1,11 @@
 <script>
 import { GlLink } from '@gitlab/ui';
+import ManualVariablesForm from './manual_variables_form.vue';
 
 export default {
   components: {
     GlLink,
+    ManualVariablesForm,
   },
   props: {
     illustrationPath: {
@@ -23,6 +25,21 @@ export default {
       required: false,
       default: null,
     },
+    playable: {
+      type: Boolean,
+      required: true,
+      default: false,
+    },
+    scheduled: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+    variablesSettingsUrl: {
+      type: String,
+      required: false,
+      default: null,
+    },
     action: {
       type: Object,
       required: false,
@@ -37,28 +54,40 @@ export default {
       },
     },
   },
+  computed: {
+    shouldRenderManualVariables() {
+      return this.playable && !this.scheduled;
+    },
+  },
 };
 </script>
 <template>
   <div class="row empty-state">
     <div class="col-12">
-      <div :class="illustrationSizeClass" class="svg-content"><img :src="illustrationPath" /></div>
+      <div :class="illustrationSizeClass" class="svg-content">
+        <img :src="illustrationPath" />
+      </div>
     </div>
 
     <div class="col-12">
       <div class="text-content">
         <h4 class="js-job-empty-state-title text-center">{{ title }}</h4>
 
-        <p v-if="content" class="js-job-empty-state-content text-center">{{ content }}</p>
-
+        <p v-if="content" class="js-job-empty-state-content">{{ content }}</p>
+      </div>
+      <manual-variables-form
+        v-if="shouldRenderManualVariables"
+        :action="action"
+        :variables-settings-url="variablesSettingsUrl"
+      />
+      <div class="text-content">
         <div v-if="action" class="text-center">
           <gl-link
             :href="action.path"
             :data-method="action.method"
             class="js-job-empty-state-action btn btn-primary"
+            >{{ action.button_title }}</gl-link
           >
-            {{ action.button_title }}
-          </gl-link>
         </div>
       </div>
     </div>
diff --git a/app/assets/javascripts/jobs/components/job_app.vue b/app/assets/javascripts/jobs/components/job_app.vue
index 79fb67d38cd..ef9fb6d08d1 100644
--- a/app/assets/javascripts/jobs/components/job_app.vue
+++ b/app/assets/javascripts/jobs/components/job_app.vue
@@ -45,6 +45,11 @@ export default {
       required: false,
       default: null,
     },
+    variablesSettingsUrl: {
+      type: String,
+      required: false,
+      default: null,
+    },
     runnerHelpUrl: {
       type: String,
       required: false,
@@ -313,6 +318,9 @@ export default {
           :title="emptyStateTitle"
           :content="emptyStateIllustration.content"
           :action="emptyStateAction"
+          :playable="job.playable"
+          :scheduled="job.scheduled"
+          :variables-settings-url="variablesSettingsUrl"
         />
         <!-- EO empty state -->
 
diff --git a/app/assets/javascripts/jobs/components/manual_variables_form.vue b/app/assets/javascripts/jobs/components/manual_variables_form.vue
new file mode 100644
index 00000000000..c32a3cac7be
--- /dev/null
+++ b/app/assets/javascripts/jobs/components/manual_variables_form.vue
@@ -0,0 +1,179 @@
+<script>
+import _ from 'underscore';
+import { mapActions } from 'vuex';
+import { GlButton } from '@gitlab/ui';
+import { s__, sprintf } from '~/locale';
+import Icon from '~/vue_shared/components/icon.vue';
+
+export default {
+  name: 'ManualVariablesForm',
+  components: {
+    GlButton,
+    Icon,
+  },
+  props: {
+    action: {
+      type: Object,
+      required: false,
+      default: null,
+      validator(value) {
+        return (
+          value === null ||
+          (_.has(value, 'path') && _.has(value, 'method') && _.has(value, 'button_title'))
+        );
+      },
+    },
+    variablesSettingsUrl: {
+      type: String,
+      required: true,
+      default: '',
+    },
+  },
+  inputTypes: {
+    key: 'key',
+    value: 'value',
+  },
+  i18n: {
+    keyPlaceholder: s__('CiVariables|Input variable key'),
+    valuePlaceholder: s__('CiVariables|Input variable value'),
+  },
+  data() {
+    return {
+      variables: [],
+      key: '',
+      secretValue: '',
+    };
+  },
+  computed: {
+    helpText() {
+      return sprintf(
+        s__(
+          'CiVariables|Specify variable values to be used in this run. The values specified in %{linkStart}CI/CD settings%{linkEnd} will be used as default',
+        ),
+        {
+          linkStart: `<a href="${this.variablesSettingsUrl}">`,
+          linkEnd: '</a>',
+        },
+        false,
+      );
+    },
+  },
+  watch: {
+    key(newVal) {
+      this.handleValueChange(newVal, this.$options.inputTypes.key);
+    },
+    secretValue(newVal) {
+      this.handleValueChange(newVal, this.$options.inputTypes.value);
+    },
+  },
+  methods: {
+    ...mapActions(['triggerManualJob']),
+    handleValueChange(newValue, type) {
+      if (newValue !== '') {
+        this.createNewVariable(type);
+        this.resetForm();
+      }
+    },
+    createNewVariable(type) {
+      const newVariable = {
+        key: this.key,
+        secret_value: this.secretValue,
+        id: _.uniqueId(),
+      };
+
+      this.variables.push(newVariable);
+
+      return this.$nextTick().then(() => {
+        this.$refs[`${this.$options.inputTypes[type]}-${newVariable.id}`][0].focus();
+      });
+    },
+    resetForm() {
+      this.key = '';
+      this.secretValue = '';
+    },
+    deleteVariable(id) {
+      this.variables.splice(this.variables.findIndex(el => el.id === id), 1);
+    },
+  },
+};
+</script>
+<template>
+  <div class="js-manual-vars-form col-12">
+    <label>{{ s__('CiVariables|Variables') }}</label>
+
+    <div class="ci-table">
+      <div class="gl-responsive-table-row table-row-header pb-0 pt-0 border-0" role="row">
+        <div class="table-section section-50" role="rowheader">{{ s__('CiVariables|Key') }}</div>
+        <div class="table-section section-50" role="rowheader">{{ s__('CiVariables|Value') }}</div>
+      </div>
+
+      <div v-for="variable in variables" :key="variable.id" class="gl-responsive-table-row">
+        <div class="table-section section-50">
+          <div class="table-mobile-header" role="rowheader">{{ s__('Pipeline|Key') }}</div>
+          <div class="table-mobile-content append-right-10">
+            <input
+              :ref="`${$options.inputTypes.key}-${variable.id}`"
+              v-model="variable.key"
+              :placeholder="$options.i18n.keyPlaceholder"
+              class="ci-variable-body-item form-control"
+            />
+          </div>
+        </div>
+
+        <div class="table-section section-50">
+          <div class="table-mobile-header" role="rowheader">{{ s__('Pipeline|Value') }}</div>
+          <div class="table-mobile-content append-right-10">
+            <input
+              :ref="`${$options.inputTypes.value}-${variable.id}`"
+              v-model="variable.secret_value"
+              :placeholder="$options.i18n.valuePlaceholder"
+              class="ci-variable-body-item form-control"
+            />
+          </div>
+        </div>
+
+        <div class="table-section section-10">
+          <div class="table-mobile-header" role="rowheader"></div>
+          <div class="table-mobile-content justify-content-end">
+            <gl-button class="btn-transparent btn-blank w-25" @click="deleteVariable(variable.id)">
+              <icon name="clear" />
+            </gl-button>
+          </div>
+        </div>
+      </div>
+      <div class="gl-responsive-table-row">
+        <div class="table-section section-50">
+          <div class="table-mobile-header" role="rowheader">{{ s__('Pipeline|Key') }}</div>
+          <div class="table-mobile-content append-right-10">
+            <input
+              ref="inputKey"
+              v-model="key"
+              class="js-input-key form-control"
+              :placeholder="$options.i18n.keyPlaceholder"
+            />
+          </div>
+        </div>
+
+        <div class="table-section section-50">
+          <div class="table-mobile-header" role="rowheader">{{ s__('Pipeline|Value') }}</div>
+          <div class="table-mobile-content append-right-10">
+            <input
+              ref="inputSecretValue"
+              v-model="secretValue"
+              class="ci-variable-body-item form-control"
+              :placeholder="$options.i18n.valuePlaceholder"
+            />
+          </div>
+        </div>
+      </div>
+    </div>
+    <div class="d-flex prepend-top-default justify-content-center">
+      <p class="text-muted" v-html="helpText"></p>
+    </div>
+    <div class="d-flex justify-content-center">
+      <gl-button variant="primary" @click="triggerManualJob(variables)">
+        {{ action.button_title }}
+      </gl-button>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/jobs/index.js b/app/assets/javascripts/jobs/index.js
index 25132449458..06514fcce1d 100644
--- a/app/assets/javascripts/jobs/index.js
+++ b/app/assets/javascripts/jobs/index.js
@@ -15,6 +15,7 @@ export default () => {
           deploymentHelpUrl: element.dataset.deploymentHelpUrl,
           runnerHelpUrl: element.dataset.runnerHelpUrl,
           runnerSettingsUrl: element.dataset.runnerSettingsUrl,
+          variablesSettingsUrl: element.dataset.variablesSettingsUrl,
           endpoint: element.dataset.endpoint,
           pagePath: element.dataset.buildOptionsPagePath,
           logState: element.dataset.buildOptionsLogState,
diff --git a/app/assets/javascripts/jobs/store/actions.js b/app/assets/javascripts/jobs/store/actions.js
index 12d67a43599..a2daef96a2d 100644
--- a/app/assets/javascripts/jobs/store/actions.js
+++ b/app/assets/javascripts/jobs/store/actions.js
@@ -209,5 +209,19 @@ export const receiveJobsForStageError = ({ commit }) => {
   flash(__('An error occurred while fetching the jobs.'));
 };
 
+export const triggerManualJob = ({ state }, variables) => {
+  const parsedVariables = variables.map(variable => {
+    const copyVar = Object.assign({}, variable);
+    delete copyVar.id;
+    return copyVar;
+  });
+
+  axios
+    .post(state.job.status.action.path, {
+      job_variables_attributes: parsedVariables,
+    })
+    .catch(() => flash(__('An error occurred while triggering the job.')));
+};
+
 // prevent babel-plugin-rewire from generating an invalid default during karma tests
 export default () => {};
diff --git a/app/controllers/projects/jobs_controller.rb b/app/controllers/projects/jobs_controller.rb
index 02ff6e872c9..adbc0159358 100644
--- a/app/controllers/projects/jobs_controller.rb
+++ b/app/controllers/projects/jobs_controller.rb
@@ -94,7 +94,7 @@ class Projects::JobsController < Projects::ApplicationController
   def play
     return respond_422 unless @build.playable?
 
-    build = @build.play(current_user)
+    build = @build.play(current_user, play_params[:job_variables_attributes])
     redirect_to build_path(build)
   end
 
@@ -190,6 +190,10 @@ class Projects::JobsController < Projects::ApplicationController
     { query: { 'response-content-type' => 'text/plain; charset=utf-8', 'response-content-disposition' => 'inline' } }
   end
 
+  def play_params
+    params.permit(job_variables_attributes: %i[key secret_value])
+  end
+
   def trace_artifact_file
     @trace_artifact_file ||= build.job_artifacts_trace&.file
   end
diff --git a/app/models/ci/build.rb b/app/models/ci/build.rb
index da70cb9a9a7..07813e03f3a 100644
--- a/app/models/ci/build.rb
+++ b/app/models/ci/build.rb
@@ -40,6 +40,7 @@ module Ci
     has_many :trace_chunks, class_name: 'Ci::BuildTraceChunk', foreign_key: :build_id
 
     has_many :job_artifacts, class_name: 'Ci::JobArtifact', foreign_key: :job_id, dependent: :destroy, inverse_of: :job # rubocop:disable Cop/ActiveRecordDependent
+    has_many :job_variables, class_name: 'Ci::JobVariable', foreign_key: :job_id
 
     Ci::JobArtifact.file_types.each do |key, value|
       has_one :"job_artifacts_#{key}", -> { where(file_type: value) }, class_name: 'Ci::JobArtifact', inverse_of: :job, foreign_key: :job_id
@@ -48,6 +49,7 @@ module Ci
     has_one :runner_session, class_name: 'Ci::BuildRunnerSession', validate: true, inverse_of: :build
 
     accepts_nested_attributes_for :runner_session
+    accepts_nested_attributes_for :job_variables
 
     delegate :url, to: :runner_session, prefix: true, allow_nil: true
     delegate :terminal_specification, to: :runner_session, allow_nil: true
@@ -331,10 +333,10 @@ module Ci
     end
 
     # rubocop: disable CodeReuse/ServiceClass
-    def play(current_user)
+    def play(current_user, job_variables_attributes = nil)
       Ci::PlayBuildService
         .new(project, current_user)
-        .execute(self)
+        .execute(self, job_variables_attributes)
     end
     # rubocop: enable CodeReuse/ServiceClass
 
@@ -432,6 +434,7 @@ module Ci
         Gitlab::Ci::Variables::Collection.new
           .concat(persisted_variables)
           .concat(scoped_variables)
+          .concat(job_variables)
           .concat(persisted_environment_variables)
           .to_runner_variables
       end
diff --git a/app/models/ci/job_variable.rb b/app/models/ci/job_variable.rb
new file mode 100644
index 00000000000..862a0bc1299
--- /dev/null
+++ b/app/models/ci/job_variable.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module Ci
+  class JobVariable < ApplicationRecord
+    extend Gitlab::Ci::Model
+    include NewHasVariable
+
+    belongs_to :job, class_name: "Ci::Build", foreign_key: :job_id
+
+    alias_attribute :secret_value, :value
+
+    validates :key, uniqueness: { scope: :job_id }
+  end
+end
diff --git a/app/models/concerns/new_has_variable.rb b/app/models/concerns/new_has_variable.rb
new file mode 100644
index 00000000000..429bf496872
--- /dev/null
+++ b/app/models/concerns/new_has_variable.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module NewHasVariable
+  extend ActiveSupport::Concern
+  include HasVariable
+
+  included do
+    attr_encrypted :value,
+      mode: :per_attribute_iv,
+      algorithm: 'aes-256-gcm',
+      key: Settings.attr_encrypted_db_key_base_32,
+      insecure_mode: false
+  end
+end
diff --git a/app/services/ci/play_build_service.rb b/app/services/ci/play_build_service.rb
index eb0b070657d..9f922ffde81 100644
--- a/app/services/ci/play_build_service.rb
+++ b/app/services/ci/play_build_service.rb
@@ -2,7 +2,7 @@
 
 module Ci
   class PlayBuildService < ::BaseService
-    def execute(build)
+    def execute(build, job_variables_attributes = nil)
       unless can?(current_user, :update_build, build)
         raise Gitlab::Access::AccessDeniedError
       end
@@ -10,7 +10,7 @@ module Ci
       # Try to enqueue the build, otherwise create a duplicate.
       #
       if build.enqueue
-        build.tap { |action| action.update(user: current_user) }
+        build.tap { |action| action.update(user: current_user, job_variables_attributes: job_variables_attributes || []) }
       else
         Ci::Build.retry(build, current_user)
       end
diff --git a/app/views/projects/jobs/show.html.haml b/app/views/projects/jobs/show.html.haml
index 81a53f22f67..c7fab87a593 100644
--- a/app/views/projects/jobs/show.html.haml
+++ b/app/views/projects/jobs/show.html.haml
@@ -11,4 +11,5 @@
     deployment_help_url: help_page_path('user/project/clusters/index.html', anchor: 'troubleshooting-failed-deployment-jobs'),
     runner_help_url: help_page_path('ci/runners/README.html', anchor: 'setting-maximum-job-timeout-for-a-runner'),
     runner_settings_url: project_runners_path(@build.project, anchor: 'js-runners-settings'),
+    variables_settings_url: project_variables_path(@build.project, anchor: 'js-cicd-variables-settings'),
     build_options: javascript_build_options } }
diff --git a/app/views/projects/settings/ci_cd/show.html.haml b/app/views/projects/settings/ci_cd/show.html.haml
index 293f0a241eb..87000e8270b 100644
--- a/app/views/projects/settings/ci_cd/show.html.haml
+++ b/app/views/projects/settings/ci_cd/show.html.haml
@@ -41,7 +41,7 @@
   .settings-content
     = render 'projects/runners/index'
 
-%section.settings.no-animate{ class: ('expanded' if expanded), data: { qa_selector: 'variables_settings_content' } }
+%section.qa-variables-settings.settings.no-animate#js-cicd-variables-settings{ class: ('expanded' if expanded), data: { qa_selector: 'variables_settings_content' } }
   .settings-header
     = render 'ci/variables/header', expanded: expanded
   .settings-content
diff --git a/changelogs/unreleased/mc-feature-manual-job-variables.yml b/changelogs/unreleased/mc-feature-manual-job-variables.yml
new file mode 100644
index 00000000000..a71cabfe303
--- /dev/null
+++ b/changelogs/unreleased/mc-feature-manual-job-variables.yml
@@ -0,0 +1,5 @@
+---
+title: Allow specifying variables when running manual jobs
+merge_request: 30485
+author:
+type: added
diff --git a/db/migrate/20190711124721_create_job_variables.rb b/db/migrate/20190711124721_create_job_variables.rb
new file mode 100644
index 00000000000..a860522f39e
--- /dev/null
+++ b/db/migrate/20190711124721_create_job_variables.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class CreateJobVariables < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  def change
+    create_table :ci_job_variables do |t|
+      t.string :key, null: false
+      t.text :encrypted_value
+      t.string :encrypted_value_iv
+      t.references :job, null: false, index: true, foreign_key: { to_table: :ci_builds, on_delete: :cascade }
+      t.integer :variable_type, null: false, limit: 2, default: 1
+    end
+
+    add_index :ci_job_variables, [:key, :job_id], unique: true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 67479937b47..1b5272179f5 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -605,6 +605,16 @@ ActiveRecord::Schema.define(version: 2019_07_25_012225) do
     t.index ["project_id"], name: "index_ci_job_artifacts_on_project_id"
   end
 
+  create_table "ci_job_variables", force: :cascade do |t|
+    t.string "key", null: false
+    t.text "encrypted_value"
+    t.string "encrypted_value_iv"
+    t.bigint "job_id", null: false
+    t.integer "variable_type", limit: 2, default: 1, null: false
+    t.index ["job_id"], name: "index_ci_job_variables_on_job_id"
+    t.index ["key", "job_id"], name: "index_ci_job_variables_on_key_and_job_id", unique: true
+  end
+
   create_table "ci_pipeline_chat_data", force: :cascade do |t|
     t.integer "pipeline_id", null: false
     t.integer "chat_name_id", null: false
@@ -3637,6 +3647,7 @@ ActiveRecord::Schema.define(version: 2019_07_25_012225) do
   add_foreign_key "ci_group_variables", "namespaces", column: "group_id", name: "fk_33ae4d58d8", on_delete: :cascade
   add_foreign_key "ci_job_artifacts", "ci_builds", column: "job_id", on_delete: :cascade
   add_foreign_key "ci_job_artifacts", "projects", on_delete: :cascade
+  add_foreign_key "ci_job_variables", "ci_builds", column: "job_id", on_delete: :cascade
   add_foreign_key "ci_pipeline_chat_data", "chat_names", on_delete: :cascade
   add_foreign_key "ci_pipeline_chat_data", "ci_pipelines", column: "pipeline_id", on_delete: :cascade
   add_foreign_key "ci_pipeline_schedule_variables", "ci_pipeline_schedules", column: "pipeline_schedule_id", name: "fk_41c35fda51", on_delete: :cascade
diff --git a/doc/ci/img/manual_job_variables.png b/doc/ci/img/manual_job_variables.png
new file mode 100644
index 00000000000..c7d62477cdd
Binary files /dev/null and b/doc/ci/img/manual_job_variables.png differ
diff --git a/doc/ci/pipelines.md b/doc/ci/pipelines.md
index be8f66c741f..ed8d0e3bc35 100644
--- a/doc/ci/pipelines.md
+++ b/doc/ci/pipelines.md
@@ -323,6 +323,20 @@ stage has a job with a manual action.
 
 ![Pipelines example](img/pipelines.png)
 
+### Specifying variables when running manual jobs
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30485) in GitLab 12.2.
+
+When running manual jobs you can supply additional job specific variables.
+
+You can do this from the job page of the manual job you want to run with
+additional variables.
+
+This is useful when you want to alter the execution of a job by using
+environment variables.
+
+![Manual job variables](img/manual_job_variables.png)
+
 ### Delay a job in a pipeline graph
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/21767) in GitLab 11.4.
diff --git a/lib/gitlab/ci/status/build/manual.rb b/lib/gitlab/ci/status/build/manual.rb
index d01b09f1398..df572188194 100644
--- a/lib/gitlab/ci/status/build/manual.rb
+++ b/lib/gitlab/ci/status/build/manual.rb
@@ -10,7 +10,7 @@ module Gitlab
               image: 'illustrations/manual_action.svg',
               size: 'svg-394',
               title: _('This job requires a manual action'),
-              content: _('This job depends on a user to trigger its process. Often they are used to deploy code to production environments')
+              content: _('This job requires manual intervention to start. Before starting this job, you can add variables below for last-minute configuration changes.')
             }
           end
 
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index 58c75ee2319..5397404b630 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -1080,6 +1080,9 @@ msgstr ""
 msgid "An error occurred while saving assignees"
 msgstr ""
 
+msgid "An error occurred while triggering the job."
+msgstr ""
+
 msgid "An error occurred while validating username"
 msgstr ""
 
@@ -2221,6 +2224,9 @@ msgstr ""
 msgid "CiVariables|Remove variable row"
 msgstr ""
 
+msgid "CiVariables|Specify variable values to be used in this run. The values specified in %{linkStart}CI/CD settings%{linkEnd} will be used as default"
+msgstr ""
+
 msgid "CiVariables|State"
 msgstr ""
 
@@ -2230,6 +2236,9 @@ msgstr ""
 msgid "CiVariables|Value"
 msgstr ""
 
+msgid "CiVariables|Variables"
+msgstr ""
+
 msgid "CiVariable|* (All environments)"
 msgstr ""
 
@@ -7697,6 +7706,9 @@ msgstr ""
 msgid "Pipeline|Existing branch name or tag"
 msgstr ""
 
+msgid "Pipeline|Key"
+msgstr ""
+
 msgid "Pipeline|Pipeline"
 msgstr ""
 
@@ -7727,6 +7739,9 @@ msgstr ""
 msgid "Pipeline|Triggerer"
 msgstr ""
 
+msgid "Pipeline|Value"
+msgstr ""
+
 msgid "Pipeline|Variables"
 msgstr ""
 
@@ -11056,9 +11071,6 @@ msgstr ""
 msgid "This issue is locked."
 msgstr ""
 
-msgid "This job depends on a user to trigger its process. Often they are used to deploy code to production environments"
-msgstr ""
-
 msgid "This job depends on upstream jobs that need to succeed in order for this job to be triggered"
 msgstr ""
 
@@ -11113,6 +11125,9 @@ msgstr ""
 msgid "This job requires a manual action"
 msgstr ""
 
+msgid "This job requires manual intervention to start. Before starting this job, you can add variables below for last-minute configuration changes."
+msgstr ""
+
 msgid "This job will automatically run after its timer finishes. Often they are used for incremental roll-out deploys to production environments. When unscheduled it converts into a manual action."
 msgstr ""
 
diff --git a/spec/controllers/projects/jobs_controller_spec.rb b/spec/controllers/projects/jobs_controller_spec.rb
index e428aa3c7b7..39ebf02dcf5 100644
--- a/spec/controllers/projects/jobs_controller_spec.rb
+++ b/spec/controllers/projects/jobs_controller_spec.rb
@@ -676,6 +676,8 @@ describe Projects::JobsController, :clean_gitlab_redis_shared_state do
   end
 
   describe 'POST play' do
+    let(:variable_attributes) { [] }
+
     before do
       project.add_developer(user)
 
@@ -698,6 +700,14 @@ describe Projects::JobsController, :clean_gitlab_redis_shared_state do
       it 'transits to pending' do
         expect(job.reload).to be_pending
       end
+
+      context 'when job variables are specified' do
+        let(:variable_attributes) { [{ key: 'first', secret_value: 'first' }] }
+
+        it 'assigns the job variables' do
+          expect(job.reload.job_variables.map(&:key)).to contain_exactly('first')
+        end
+      end
     end
 
     context 'when job is not playable' do
@@ -712,7 +722,8 @@ describe Projects::JobsController, :clean_gitlab_redis_shared_state do
       post :play, params: {
                     namespace_id: project.namespace,
                     project_id: project,
-                    id: job.id
+                    id: job.id,
+                    job_variables_attributes: variable_attributes
                   }
     end
   end
diff --git a/spec/factories/ci/job_variables.rb b/spec/factories/ci/job_variables.rb
new file mode 100644
index 00000000000..d664b763abd
--- /dev/null
+++ b/spec/factories/ci/job_variables.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :ci_job_variable, class: Ci::JobVariable do
+    sequence(:key) { |n| "VARIABLE_#{n}" }
+    value 'VARIABLE_VALUE'
+
+    job factory: :ci_build
+  end
+end
diff --git a/spec/features/projects/jobs_spec.rb b/spec/features/projects/jobs_spec.rb
index f4ed89adc0f..8ed420300af 100644
--- a/spec/features/projects/jobs_spec.rb
+++ b/spec/features/projects/jobs_spec.rb
@@ -701,12 +701,12 @@ describe 'Jobs', :clean_gitlab_redis_shared_state do
       it 'shows manual action empty state', :js do
         expect(page).to have_content(job.detailed_status(user).illustration[:title])
         expect(page).to have_content('This job requires a manual action')
-        expect(page).to have_content('This job depends on a user to trigger its process. Often they are used to deploy code to production environments')
-        expect(page).to have_link('Trigger this manual action')
+        expect(page).to have_content('This job requires manual intervention to start. Before starting this job, you can add variables below for last-minute configuration changes.')
+        expect(page).to have_button('Trigger this manual action')
       end
 
       it 'plays manual action and shows pending status', :js do
-        click_link 'Trigger this manual action'
+        click_button 'Trigger this manual action'
 
         wait_for_requests
         expect(page).to have_content('This job has not started yet')
@@ -734,8 +734,8 @@ describe 'Jobs', :clean_gitlab_redis_shared_state do
 
         wait_for_requests
         expect(page).to have_content('This job requires a manual action')
-        expect(page).to have_content('This job depends on a user to trigger its process. Often they are used to deploy code to production environments')
-        expect(page).to have_link('Trigger this manual action')
+        expect(page).to have_content('This job requires manual intervention to start. Before starting this job, you can add variables below for last-minute configuration changes.')
+        expect(page).to have_button('Trigger this manual action')
       end
     end
 
diff --git a/spec/frontend/jobs/components/empty_state_spec.js b/spec/frontend/jobs/components/empty_state_spec.js
index a2df79bdda0..dfba5a936ee 100644
--- a/spec/frontend/jobs/components/empty_state_spec.js
+++ b/spec/frontend/jobs/components/empty_state_spec.js
@@ -10,6 +10,8 @@ describe('Empty State', () => {
     illustrationPath: 'illustrations/pending_job_empty.svg',
     illustrationSizeClass: 'svg-430',
     title: 'This job has not started yet',
+    playable: false,
+    variablesSettingsUrl: '',
   };
 
   const content = 'This job is in pending state and is waiting to be picked by a runner';
@@ -90,4 +92,44 @@ describe('Empty State', () => {
       expect(vm.$el.querySelector('.js-job-empty-state-action')).toBeNull();
     });
   });
+
+  describe('without playbale action', () => {
+    it('does not render manual variables form', () => {
+      vm = mountComponent(Component, {
+        ...props,
+        content,
+      });
+
+      expect(vm.$el.querySelector('.js-manual-vars-form')).toBeNull();
+    });
+  });
+
+  describe('with playbale action and not scheduled job', () => {
+    it('renders manual variables form', () => {
+      vm = mountComponent(Component, {
+        ...props,
+        content,
+        playable: true,
+        scheduled: false,
+        action: {
+          path: 'runner',
+          button_title: 'Check runner',
+          method: 'post',
+        },
+      });
+
+      expect(vm.$el.querySelector('.js-manual-vars-form')).not.toBeNull();
+    });
+  });
+
+  describe('with playbale action and  scheduled job', () => {
+    it('does not render manual variables form', () => {
+      vm = mountComponent(Component, {
+        ...props,
+        content,
+      });
+
+      expect(vm.$el.querySelector('.js-manual-vars-form')).toBeNull();
+    });
+  });
 });
diff --git a/spec/javascripts/jobs/components/job_app_spec.js b/spec/javascripts/jobs/components/job_app_spec.js
index f28d2c2a882..c58d59b4b16 100644
--- a/spec/javascripts/jobs/components/job_app_spec.js
+++ b/spec/javascripts/jobs/components/job_app_spec.js
@@ -19,6 +19,7 @@ describe('Job App ', () => {
     runnerHelpUrl: 'help/runner',
     deploymentHelpUrl: 'help/deployment',
     runnerSettingsUrl: 'settings/ci-cd/runners',
+    variablesSettingsUrl: 'settings/ci-cd/variables',
     terminalPath: 'jobs/123/terminal',
     pagePath: `${gl.TEST_HOST}jobs/123`,
     logState:
diff --git a/spec/javascripts/jobs/components/manual_variables_form_spec.js b/spec/javascripts/jobs/components/manual_variables_form_spec.js
new file mode 100644
index 00000000000..093aa905185
--- /dev/null
+++ b/spec/javascripts/jobs/components/manual_variables_form_spec.js
@@ -0,0 +1,88 @@
+import { shallowMount } from '@vue/test-utils';
+import { GlButton } from '@gitlab/ui';
+import Form from '~/jobs/components/manual_variables_form.vue';
+
+describe('Manual Variables Form', () => {
+  let wrapper;
+  const requiredProps = {
+    action: {
+      path: '/play',
+      method: 'post',
+      button_title: 'Trigger this manual action',
+    },
+    variablesSettingsUrl: '/settings',
+  };
+
+  const factory = (props = {}) => {
+    wrapper = shallowMount(Form, {
+      propsData: props,
+    });
+  };
+
+  beforeEach(() => {
+    factory(requiredProps);
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  it('renders empty form with correct placeholders', () => {
+    expect(wrapper.find({ ref: 'inputKey' }).attributes('placeholder')).toBe('Input variable key');
+    expect(wrapper.find({ ref: 'inputSecretValue' }).attributes('placeholder')).toBe(
+      'Input variable value',
+    );
+  });
+
+  it('renders help text with provided link', () => {
+    expect(wrapper.find('p').text()).toBe(
+      'Specify variable values to be used in this run. The values specified in CI/CD settings will be used as default',
+    );
+
+    expect(wrapper.find('a').attributes('href')).toBe(requiredProps.variablesSettingsUrl);
+  });
+
+  describe('when adding a new variable', () => {
+    it('creates a new variable when user types a new key and resets the form', done => {
+      wrapper.vm
+        .$nextTick()
+        .then(() => wrapper.find({ ref: 'inputKey' }).setValue('new key'))
+        .then(() => {
+          expect(wrapper.vm.variables.length).toBe(1);
+          expect(wrapper.vm.variables[0].key).toBe('new key');
+          expect(wrapper.find({ ref: 'inputKey' }).attributes('value')).toBe(undefined);
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+
+    it('creates a new variable when user types a new value and resets the form', done => {
+      wrapper.vm
+        .$nextTick()
+        .then(() => wrapper.find({ ref: 'inputSecretValue' }).setValue('new value'))
+        .then(() => {
+          expect(wrapper.vm.variables.length).toBe(1);
+          expect(wrapper.vm.variables[0].secret_value).toBe('new value');
+          expect(wrapper.find({ ref: 'inputSecretValue' }).attributes('value')).toBe(undefined);
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+  });
+
+  describe('when deleting a variable', () => {
+    it('removes the variable row', () => {
+      wrapper.vm.variables = [
+        {
+          key: 'new key',
+          secret_value: 'value',
+          id: '1',
+        },
+      ];
+
+      wrapper.find(GlButton).vm.$emit('click');
+
+      expect(wrapper.vm.variables.length).toBe(0);
+    });
+  });
+});
diff --git a/spec/models/ci/build_spec.rb b/spec/models/ci/build_spec.rb
index c30cb70e1c1..17c7c05324a 100644
--- a/spec/models/ci/build_spec.rb
+++ b/spec/models/ci/build_spec.rb
@@ -21,7 +21,8 @@ describe Ci::Build do
   it { is_expected.to belong_to(:erased_by) }
   it { is_expected.to have_many(:trace_sections)}
   it { is_expected.to have_one(:deployment) }
-  it { is_expected.to have_one(:runner_session)}
+  it { is_expected.to have_one(:runner_session) }
+  it { is_expected.to have_many(:job_variables) }
   it { is_expected.to validate_presence_of(:ref) }
   it { is_expected.to respond_to(:has_trace?) }
   it { is_expected.to respond_to(:trace) }
@@ -2258,6 +2259,16 @@ describe Ci::Build do
       it { is_expected.to include(manual_variable) }
     end
 
+    context 'when job variable is defined' do
+      let(:job_variable) { { key: 'first', value: 'first', public: false, masked: false } }
+
+      before do
+        create(:ci_job_variable, job_variable.slice(:key, :value).merge(job: build))
+      end
+
+      it { is_expected.to include(job_variable) }
+    end
+
     context 'when build is for tag' do
       let(:tag_variable) do
         { key: 'CI_COMMIT_TAG', value: 'master', public: true, masked: false }
diff --git a/spec/models/ci/job_variable_spec.rb b/spec/models/ci/job_variable_spec.rb
new file mode 100644
index 00000000000..b94a914c784
--- /dev/null
+++ b/spec/models/ci/job_variable_spec.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Ci::JobVariable do
+  subject { build(:ci_job_variable) }
+
+  it_behaves_like "CI variable"
+
+  it { is_expected.to belong_to(:job) }
+  it { is_expected.to validate_uniqueness_of(:key).scoped_to(:job_id) }
+end
diff --git a/spec/services/ci/play_build_service_spec.rb b/spec/services/ci/play_build_service_spec.rb
index 1e68b7956ea..cf39f3da4fe 100644
--- a/spec/services/ci/play_build_service_spec.rb
+++ b/spec/services/ci/play_build_service_spec.rb
@@ -60,6 +60,19 @@ describe Ci::PlayBuildService, '#execute' do
 
       expect(build.reload.user).to eq user
     end
+
+    context 'when variables are supplied' do
+      let(:job_variables) do
+        [{ key: 'first', secret_value: 'first' },
+         { key: 'second', secret_value: 'second' }]
+      end
+
+      it 'assigns the variables to the build' do
+        service.execute(build, job_variables)
+
+        expect(build.reload.job_variables.map(&:key)).to contain_exactly('first', 'second')
+      end
+    end
   end
 
   context 'when build is not a playable manual action' do
diff --git a/spec/services/ci/retry_build_service_spec.rb b/spec/services/ci/retry_build_service_spec.rb
index 11b06ef5019..915288cd916 100644
--- a/spec/services/ci/retry_build_service_spec.rb
+++ b/spec/services/ci/retry_build_service_spec.rb
@@ -30,7 +30,8 @@ describe Ci::RetryBuildService do
        job_artifacts_sast job_artifacts_dependency_scanning
        job_artifacts_container_scanning job_artifacts_dast
        job_artifacts_license_management job_artifacts_performance
-       job_artifacts_codequality job_artifacts_metrics scheduled_at].freeze
+       job_artifacts_codequality job_artifacts_metrics scheduled_at
+       job_variables].freeze
 
   IGNORE_ACCESSORS =
     %i[type lock_version target_url base_tags trace_sections
@@ -65,6 +66,8 @@ describe Ci::RetryBuildService do
                file_type: file_type, job: build, expire_at: build.artifacts_expire_at)
       end
 
+      create(:ci_job_variable, job: build)
+
       build.reload
     end