diff --git a/.gitlab/ci/assign-test.yml b/.gitlab/ci/assign-test.yml
index 19c28ce49c..9dd3bb58e6 100644
--- a/.gitlab/ci/assign-test.yml
+++ b/.gitlab/ci/assign-test.yml
@@ -10,6 +10,7 @@ assign_test:
     - build_ssc_esp32
     - build_esp_idf_tests_cmake_esp32
     - build_esp_idf_tests_cmake_esp32s2
+    - build_esp_idf_tests_cmake_esp32s3
     - build_esp_idf_tests_cmake_esp32c3
   variables:
     SUBMODULES_TO_FETCH: "components/esptool_py/esptool"
@@ -58,6 +59,7 @@ update_test_cases:
   needs:
     - build_esp_idf_tests_cmake_esp32
     - build_esp_idf_tests_cmake_esp32s2
+    - build_esp_idf_tests_cmake_esp32s3
     - build_esp_idf_tests_cmake_esp32c3
   artifacts:
     when: always
diff --git a/.gitlab/ci/build.yml b/.gitlab/ci/build.yml
index 756c38263a..06b2094acb 100644
--- a/.gitlab/ci/build.yml
+++ b/.gitlab/ci/build.yml
@@ -289,6 +289,13 @@ build_component_ut_esp32s2:
   variables:
     IDF_TARGET: esp32s2
 
+build_component_ut_esp32s3:
+  extends:
+    - .build_component_ut_template
+    - .rules:build:component_ut-esp32s3
+  variables:
+    IDF_TARGET: esp32s3
+
 build_component_ut_esp32c3:
   extends:
     - .build_component_ut_template
diff --git a/.gitlab/ci/target-test.yml b/.gitlab/ci/target-test.yml
index 51f802479e..150f4a8df2 100644
--- a/.gitlab/ci/target-test.yml
+++ b/.gitlab/ci/target-test.yml
@@ -382,6 +382,11 @@ test_app_test_esp32_generic:
     - .component_ut_template
     - .rules:test:component_ut-esp32s2
 
+.component_ut_esp32s3_template:
+  extends:
+    - .component_ut_template
+    - .rules:test:component_ut-esp32s3
+
 .component_ut_esp32c3_template:
   extends:
     - .component_ut_template
@@ -399,6 +404,12 @@ component_ut_test_esp32s2:
     - ESP32S2
     - COMPONENT_UT_GENERIC
 
+component_ut_test_esp32s3:
+  extends: .component_ut_esp32s3_template
+  tags:
+    - ESP32S3
+    - COMPONENT_UT_GENERIC
+
 component_ut_test_esp32c3:
   extends: .component_ut_esp32c3_template
   tags:
@@ -421,6 +432,11 @@ component_ut_test_esp32c3:
     - .unit_test_template
     - .rules:test:unit_test-esp32s2
 
+.unit_test_esp32s3_template:
+  extends:
+    - .unit_test_template
+    - .rules:test:unit_test-esp32s3
+
 .unit_test_esp32c3_template:
   extends:
     - .unit_test_template
@@ -674,6 +690,13 @@ UT_C3_FLASH_SUSPEND:
     - ESP32C3_IDF
     - UT_T1_Flash_Suspend
 
+UT_S3:
+  extends: .unit_test_esp32s3_template
+  parallel: 20
+  tags:
+    - ESP32S3_IDF
+    - UT_T1_1
+
 .integration_test_template:
   extends:
     - .target_test_job_template
diff --git a/tools/ci/mypy_ignore_list.txt b/tools/ci/mypy_ignore_list.txt
index b4ae4b6bac..13927c8a20 100644
--- a/tools/ci/mypy_ignore_list.txt
+++ b/tools/ci/mypy_ignore_list.txt
@@ -195,6 +195,7 @@ tools/ci/python_packages/ttfw_idf/DebugUtils.py
 tools/ci/python_packages/ttfw_idf/IDFApp.py
 tools/ci/python_packages/ttfw_idf/IDFAssignTest.py
 tools/ci/python_packages/ttfw_idf/IDFDUT.py
+tools/ci/python_packages/ttfw_idf/__init__.py
 tools/ci/python_packages/ttfw_idf/unity_test_parser.py
 tools/ci/python_packages/wifi_tools.py
 tools/ci/test_autocomplete.py
diff --git a/tools/ci/python_packages/ttfw_idf/IDFAssignTest.py b/tools/ci/python_packages/ttfw_idf/IDFAssignTest.py
index e963536a93..402d61ef0b 100644
--- a/tools/ci/python_packages/ttfw_idf/IDFAssignTest.py
+++ b/tools/ci/python_packages/ttfw_idf/IDFAssignTest.py
@@ -12,7 +12,7 @@ import yaml
 try:
     from yaml import CLoader as Loader
 except ImportError:
-    from yaml import Loader as Loader
+    from yaml import Loader as Loader  # type: ignore
 
 import gitlab_api
 from tiny_test_fw.Utility import CIAssignTest
@@ -79,30 +79,30 @@ class IDFAssignTest(CIAssignTest.AssignTest):
 class ExampleGroup(IDFCaseGroup):
     SORT_KEYS = CI_JOB_MATCH_KEYS = ['env_tag', 'target']
 
-    LOCAL_BUILD_DIR = 'build_examples'
+    LOCAL_BUILD_DIR = 'build_examples'  # type: ignore
     EXAMPLE_TARGETS = SUPPORTED_TARGETS + PREVIEW_TARGETS
-    BUILD_JOB_NAMES = ['build_examples_cmake_{}'.format(target) for target in EXAMPLE_TARGETS]
+    BUILD_JOB_NAMES = ['build_examples_cmake_{}'.format(target) for target in EXAMPLE_TARGETS]  # type: ignore
 
 
 class TestAppsGroup(ExampleGroup):
     LOCAL_BUILD_DIR = 'build_test_apps'
     TEST_APP_TARGETS = SUPPORTED_TARGETS + PREVIEW_TARGETS
-    BUILD_JOB_NAMES = ['build_test_apps_{}'.format(target) for target in TEST_APP_TARGETS]
+    BUILD_JOB_NAMES = ['build_test_apps_{}'.format(target) for target in TEST_APP_TARGETS]  # type: ignore
 
 
 class ComponentUTGroup(TestAppsGroup):
     LOCAL_BUILD_DIR = 'build_component_ut'
     UNIT_TEST_TARGETS = SUPPORTED_TARGETS + PREVIEW_TARGETS
-    BUILD_JOB_NAMES = ['build_component_ut_{}'.format(target) for target in UNIT_TEST_TARGETS]
+    BUILD_JOB_NAMES = ['build_component_ut_{}'.format(target) for target in UNIT_TEST_TARGETS]  # type: ignore
 
 
 class UnitTestGroup(IDFCaseGroup):
     SORT_KEYS = ['test environment', 'tags', 'chip_target']
     CI_JOB_MATCH_KEYS = ['test environment']
 
-    LOCAL_BUILD_DIR = 'tools/unit-test-app/builds'
+    LOCAL_BUILD_DIR = 'tools/unit-test-app/builds'  # type: ignore
     UNIT_TEST_TARGETS = SUPPORTED_TARGETS + PREVIEW_TARGETS
-    BUILD_JOB_NAMES = ['build_esp_idf_tests_cmake_{}'.format(target) for target in UNIT_TEST_TARGETS]
+    BUILD_JOB_NAMES = ['build_esp_idf_tests_cmake_{}'.format(target) for target in UNIT_TEST_TARGETS]  # type: ignore
 
     MAX_CASE = 50
     ATTR_CONVERT_TABLE = {
@@ -111,6 +111,7 @@ class UnitTestGroup(IDFCaseGroup):
     DUT_CLS_NAME = {
         'esp32': 'ESP32DUT',
         'esp32s2': 'ESP32S2DUT',
+        'esp32s3': 'ESP32S3DUT',
         'esp32c3': 'ESP32C3DUT',
         'esp8266': 'ESP8266DUT',
     }
@@ -322,7 +323,7 @@ if __name__ == '__main__':
 
     SUPPORTED_TARGETS.extend(PREVIEW_TARGETS)
 
-    test_case_paths = [os.path.join(IDF_PATH_FROM_ENV, path) if not os.path.isabs(path) else path for path in args.test_case_paths]
+    test_case_paths = [os.path.join(IDF_PATH_FROM_ENV, path) if not os.path.isabs(path) else path for path in args.test_case_paths]  # type: ignore
     args_list = [test_case_paths, args.config]
     if args.case_group == 'example_test':
         assigner = ExampleAssignTest(*args_list)
diff --git a/tools/ci/python_packages/ttfw_idf/IDFDUT.py b/tools/ci/python_packages/ttfw_idf/IDFDUT.py
index 8b9d657a9a..d067f5da75 100644
--- a/tools/ci/python_packages/ttfw_idf/IDFDUT.py
+++ b/tools/ci/python_packages/ttfw_idf/IDFDUT.py
@@ -29,7 +29,7 @@ import pexpect
 try:
     import Queue as _queue
 except ImportError:
-    import queue as _queue
+    import queue as _queue  # type: ignore
 
 from serial.tools import list_ports
 from tiny_test_fw import DUT, Utility
@@ -531,6 +531,18 @@ class ESP32S2DUT(IDFDUT):
         raise NotImplementedError()
 
 
+class ESP32S3DUT(IDFDUT):
+    TARGET = 'esp32s3'
+    TOOLCHAIN_PREFIX = 'xtensa-esp32s3-elf-'
+
+    @classmethod
+    def _get_rom(cls):
+        return esptool.ESP32S3ROM
+
+    def erase_partition(self, esp, partition):
+        raise NotImplementedError()
+
+
 class ESP32C3DUT(IDFDUT):
     TARGET = 'esp32c3'
     TOOLCHAIN_PREFIX = 'riscv32-esp-elf-'
@@ -556,7 +568,7 @@ class ESP8266DUT(IDFDUT):
 
 
 def get_target_by_rom_class(cls):
-    for c in [ESP32DUT, ESP32S2DUT, ESP32C3DUT, ESP8266DUT, IDFQEMUDUT]:
+    for c in [ESP32DUT, ESP32S2DUT, ESP32S3DUT, ESP32C3DUT, ESP8266DUT, IDFQEMUDUT]:
         if c._get_rom() == cls:
             return c.TARGET
     return None
@@ -652,5 +664,5 @@ class IDFQEMUDUT(IDFDUT):
 
 
 class ESP32QEMUDUT(IDFQEMUDUT):
-    TARGET = 'esp32'
-    TOOLCHAIN_PREFIX = 'xtensa-esp32-elf-'
+    TARGET = 'esp32'  # type: ignore
+    TOOLCHAIN_PREFIX = 'xtensa-esp32-elf-'  # type: ignore
diff --git a/tools/ci/python_packages/ttfw_idf/__init__.py b/tools/ci/python_packages/ttfw_idf/__init__.py
index f6ffbb8a8b..d4e2768473 100644
--- a/tools/ci/python_packages/ttfw_idf/__init__.py
+++ b/tools/ci/python_packages/ttfw_idf/__init__.py
@@ -23,19 +23,21 @@ from tiny_test_fw import TinyFW, Utility
 
 from .DebugUtils import CustomProcess, GDBBackend, OCDBackend  # noqa: export DebugUtils for users
 from .IDFApp import UT, ComponentUTApp, Example, IDFApp, LoadableElfTestApp, TestApp  # noqa: export all Apps for users
-from .IDFDUT import ESP32C3DUT, ESP32DUT, ESP32QEMUDUT, ESP32S2DUT, ESP8266DUT, IDFDUT  # noqa: export DUTs for users
+from .IDFDUT import (ESP32C3DUT, ESP32DUT, ESP32QEMUDUT, ESP32S2DUT, ESP32S3DUT,  # noqa: export DUTs for users
+                     ESP8266DUT, IDFDUT)
 from .unity_test_parser import TestFormat, TestResults
 
 # pass TARGET_DUT_CLS_DICT to Env.py to avoid circular dependency issue.
 TARGET_DUT_CLS_DICT = {
     'ESP32': ESP32DUT,
     'ESP32S2': ESP32S2DUT,
+    'ESP32S3': ESP32S3DUT,
     'ESP32C3': ESP32C3DUT,
 }
 
 
 try:
-    string_type = basestring
+    string_type = basestring  # type: ignore
 except NameError:
     string_type = str
 
diff --git a/tools/unit-test-app/tools/ConfigDependency.yml b/tools/unit-test-app/tools/ConfigDependency.yml
index e5e5721cc3..5a29de2952 100644
--- a/tools/unit-test-app/tools/ConfigDependency.yml
+++ b/tools/unit-test-app/tools/ConfigDependency.yml
@@ -2,4 +2,5 @@
 "8Mpsram": "CONFIG_SPIRAM_BANKSWITCH_ENABLE=y"
 "ESP32_IDF": "CONFIG_IDF_TARGET_ESP32=y"
 "ESP32S2_IDF": "CONFIG_IDF_TARGET_ESP32S2=y"
+"ESP32S3_IDF": "CONFIG_IDF_TARGET_ESP32S3=y"
 "ESP32C3_IDF": "CONFIG_IDF_TARGET_ESP32C3=y"
diff --git a/tools/unit-test-app/tools/UnitTestParser.py b/tools/unit-test-app/tools/UnitTestParser.py
index 5b6e6c58c6..897984a906 100644
--- a/tools/unit-test-app/tools/UnitTestParser.py
+++ b/tools/unit-test-app/tools/UnitTestParser.py
@@ -53,6 +53,8 @@ class Parser(object):
     TOOLCHAIN_FOR_TARGET = {
         'esp32': 'xtensa-esp32-elf-',
         'esp32s2': 'xtensa-esp32s2-elf-',
+        'esp32s3': 'xtensa-esp32s3-elf-',
+        'esp32c3': 'riscv32-esp-elf-',
     }
 
     def __init__(self, binary_folder, node_index):