diff --git a/src/rest-server/src/config/v2/protocol.js b/src/rest-server/src/config/v2/protocol.js
index 163172f9..4f86c569 100644
--- a/src/rest-server/src/config/v2/protocol.js
+++ b/src/rest-server/src/config/v2/protocol.js
@@ -173,6 +173,11 @@ const protocolSchema = {
       },
       minItems: 1,
     },
+    jobType: {
+      type: 'string',
+      enum: ['inference', 'training', 'others'],
+      default: 'others',
+    },
     parameters: {
       type: 'object',
       additionalProperties: true,
diff --git a/src/rest-server/src/controllers/v2/job.js b/src/rest-server/src/controllers/v2/job.js
index 6f59d3d3..339bac7c 100644
--- a/src/rest-server/src/controllers/v2/job.js
+++ b/src/rest-server/src/controllers/v2/job.js
@@ -86,6 +86,24 @@ const list = asyncHandler(async (req, res) => {
     if ('tagsNotContain' in req.query) {
       tagsNotContainFilter.name = req.query.tagsNotContain.split(',');
     }
+    if ('jobType' in req.query) {
+      // validate jobType values
+      const validJobTypes = ['inference', 'training', 'others'];
+      const requestedTypes = req.query.jobType.split(',');
+      const invalidTypes = requestedTypes.filter(type => !validJobTypes.includes(type));
+      if (invalidTypes.length > 0) {
+        throw createError(
+          'Bad Request',
+          'InvalidParametersError',
+          `Invalid job type(s): ${invalidTypes.join(', ')}`
+        );
+      }
+      if (Array.isArray(tagsContainFilter.name)) {
+        tagsContainFilter.name.push(...requestedTypes);
+      } else {
+        tagsContainFilter.name = requestedTypes;
+      }
+    }
     if ('keyword' in req.query) {
       // match text in username, jobname, or vc
       filters[Op.or] = [
@@ -199,6 +217,7 @@ const update = asyncHandler(async (req, res) => {
   const jobName = res.locals.protocol.name;
   const userName = req.user.username;
   const frameworkName = `${userName}~${jobName}`;
+  const jobType = res.locals.protocol.jobType || 'others';
 
   // check duplicate job
   try {
@@ -216,6 +235,7 @@ const update = asyncHandler(async (req, res) => {
     }
   }
   await job.put(frameworkName, res.locals.protocol, req.body);
+  await job.addTag(frameworkName, jobType);
   res.status(status('Accepted')).json({
     status: status('Accepted'),
     message: `Update job ${jobName} for user ${userName} successfully.`,
@@ -368,10 +388,10 @@ const getLogs = asyncHandler(async (req, res) => {
     throw error.code === 'NoTaskLogError'
       ? error
       : createError(
-          'Internal Server Error',
-          'UnknownError',
-          'Failed to get log list',
-        );
+        'Internal Server Error',
+        'UnknownError',
+        'Failed to get log list',
+      );
   }
 });
 
diff --git a/src/rest-server/src/middlewares/v2/protocol.js b/src/rest-server/src/middlewares/v2/protocol.js
index 4e505be4..b989665e 100644
--- a/src/rest-server/src/middlewares/v2/protocol.js
+++ b/src/rest-server/src/middlewares/v2/protocol.js
@@ -120,6 +120,34 @@ const protocolValidate = (protocolYAML) => {
       }
     }
   }
+
+  // check jobType
+  if ('jobType' in protocolObj) {
+    if (protocolObj.jobType === 'inference') {
+      // check parameters for inference job
+      if (!('parameters' in protocolObj)) {
+        throw createError(
+          'Bad Request',
+          'InvalidProtocolError',
+          `The following parameters must be specified for inference job:
+INTERNAL_SERVER_IP=$PAI_HOST_IP_taskrole_0
+INTERNAL_SERVER_PORT=$PAI_PORT_LIST_taskrole_0_http
+API_KEY=[any string]`,
+        );
+      }
+      const requiredParams = ['INTERNAL_SERVER_IP', 'INTERNAL_SERVER_PORT', 'API_KEY'];
+      for (const param of requiredParams) {
+        if (!(param in protocolObj.parameters)) {
+          throw createError(
+            'Bad Request',
+            'InvalidProtocolError',
+            `Parameter ${param} must be specified for inference job.`,
+          );
+        }
+      }
+    }
+  }
+
   for (const taskRole of Object.keys(protocolObj.taskRoles)) {
     for (const field of prerequisiteFields) {
       if (
@@ -194,7 +222,7 @@ const protocolRender = (protocolObj) => {
         ],
       $output:
         protocolObj.prerequisites.output[
-          protocolObj.taskRoles[taskRole].output
+        protocolObj.taskRoles[taskRole].output
         ],
       $data:
         protocolObj.prerequisites.data[protocolObj.taskRoles[taskRole].data],
diff --git a/src/rest-server/src/models/v2/job/k8s.js b/src/rest-server/src/models/v2/job/k8s.js
index 86ad75f8..5a8ba976 100644
--- a/src/rest-server/src/models/v2/job/k8s.js
+++ b/src/rest-server/src/models/v2/job/k8s.js
@@ -1000,33 +1000,43 @@ const list = async (
     Object.keys(tagsContainFilter).length !== 0 ||
     Object.keys(tagsNotContainFilter).length !== 0
   ) {
-    filters.name = {};
-    // tagsContain
+    // Build name filters by querying Tag table directly to avoid using QueryGenerator
+    const nameFilter = {};
+
+    // tagsContain -> include frameworks whose name appears in Tag rows matched by tagsContainFilter
     if (Object.keys(tagsContainFilter).length !== 0) {
-      const queryContainFrameworkName = databaseModel.sequelize.dialect.QueryGenerator.selectQuery(
-        'tags',
-        {
-          attributes: ['frameworkName'],
-          where: tagsContainFilter,
-        },
-      );
-      filters.name[Sequelize.Op.in] = Sequelize.literal(`
-          (${queryContainFrameworkName.slice(0, -1)})
-      `);
+      const containRows = await databaseModel.Tag.findAll({
+        attributes: ['frameworkName'],
+        where: tagsContainFilter,
+        raw: true,
+      });
+      const containNames = [...new Set(containRows.map((r) => r.frameworkName))];
+      // if no tags match, result is empty
+      if (containNames.length === 0) {
+        if (withTotalCount) {
+          return { totalCount: 0, data: [] };
+        } else {
+          return [];
+        }
+      }
+      nameFilter[Sequelize.Op.in] = containNames;
     }
-    // tagsNotContain
+
+    // tagsNotContain -> exclude frameworks whose name appears in Tag rows matched by tagsNotContainFilter
     if (Object.keys(tagsNotContainFilter).length !== 0) {
-      const queryNotContainFrameworkName = databaseModel.sequelize.dialect.QueryGenerator.selectQuery(
-        'tags',
-        {
-          attributes: ['frameworkName'],
-          where: tagsNotContainFilter,
-        },
-      );
-      filters.name[Sequelize.Op.notIn] = Sequelize.literal(`
-          (${queryNotContainFrameworkName.slice(0, -1)})
-      `);
+      const notContainRows = await databaseModel.Tag.findAll({
+        attributes: ['frameworkName'],
+        where: tagsNotContainFilter,
+        raw: true,
+      });
+      const notContainNames = [...new Set(notContainRows.map((r) => r.frameworkName))];
+      if (notContainNames.length > 0) {
+        nameFilter[Sequelize.Op.notIn] = notContainNames;
+      }
     }
+
+    // merge with any existing name filter
+    filters.name = Object.assign({}, filters.name || {}, nameFilter);
   }
 
   frameworks = await databaseModel.Framework.findAll({