diff --git a/sdk/python/feast/infra/contrib/spark_kafka_processor.py b/sdk/python/feast/infra/contrib/spark_kafka_processor.py
index ea55d89988a..775352cbae5 100644
--- a/sdk/python/feast/infra/contrib/spark_kafka_processor.py
+++ b/sdk/python/feast/infra/contrib/spark_kafka_processor.py
@@ -5,6 +5,7 @@
 from pyspark.sql import DataFrame, SparkSession
 from pyspark.sql.avro.functions import from_avro
 from pyspark.sql.functions import col, from_json
+from pyspark.sql.streaming import StreamingQuery
 
 from feast.data_format import AvroFormat, JsonFormat
 from feast.data_source import KafkaSource, PushMode
@@ -63,7 +64,11 @@ def __init__(
         self.join_keys = [fs.get_entity(entity).join_key for entity in sfv.entities]
         super().__init__(fs=fs, sfv=sfv, data_source=sfv.stream_source)
 
-    def ingest_stream_feature_view(self, to: PushMode = PushMode.ONLINE) -> None:
+        # Type hinting for data_source type.
+        # data_source type has been checked to be an instance of KafkaSource.
+        self.data_source: KafkaSource = self.data_source  # type: ignore
+
+    def ingest_stream_feature_view(self, to: PushMode = PushMode.ONLINE) -> StreamingQuery:
         ingested_stream_df = self._ingest_stream_data()
         transformed_df = self._construct_transformation_plan(ingested_stream_df)
         online_store_query = self._write_stream_data(transformed_df, to)
@@ -122,7 +127,7 @@ def _ingest_stream_data(self) -> StreamTable:
     def _construct_transformation_plan(self, df: StreamTable) -> StreamTable:
         return self.sfv.udf.__call__(df) if self.sfv.udf else df
 
-    def _write_stream_data(self, df: StreamTable, to: PushMode):
+    def _write_stream_data(self, df: StreamTable, to: PushMode) -> StreamingQuery:
         # Validation occurs at the fs.write_to_online_store() phase against the stream feature view schema.
         def batch_write(row: DataFrame, batch_id: int):
             rows: pd.DataFrame = row.toPandas()
diff --git a/sdk/python/feast/infra/offline_stores/redshift.py b/sdk/python/feast/infra/offline_stores/redshift.py
index 837cf49655d..6034bf5ac7b 100644
--- a/sdk/python/feast/infra/offline_stores/redshift.py
+++ b/sdk/python/feast/infra/offline_stores/redshift.py
@@ -51,13 +51,13 @@ class RedshiftOfflineStoreConfig(FeastConfigBaseModel):
     type: Literal["redshift"] = "redshift"
     """ Offline store type selector"""
 
-    cluster_id: Optional[StrictStr]
+    cluster_id: Optional[StrictStr] = None
     """ Redshift cluster identifier, for provisioned clusters """
 
-    user: Optional[StrictStr]
+    user: Optional[StrictStr] = None
     """ Redshift user name, only required for provisioned clusters """
 
-    workgroup: Optional[StrictStr]
+    workgroup: Optional[StrictStr] = None
     """ Redshift workgroup identifier, for serverless """
 
     region: StrictStr
diff --git a/sdk/python/feast/infra/offline_stores/snowflake_source.py b/sdk/python/feast/infra/offline_stores/snowflake_source.py
index 0cbf82dd1c1..b4500b9807e 100644
--- a/sdk/python/feast/infra/offline_stores/snowflake_source.py
+++ b/sdk/python/feast/infra/offline_stores/snowflake_source.py
@@ -1,5 +1,5 @@
 import warnings
-from typing import Callable, Dict, Iterable, Optional, Tuple
+from typing import Callable, Dict, Iterable, Optional, Tuple, Any
 
 from typeguard import typechecked
 
@@ -223,7 +223,7 @@ def get_table_column_names_and_types(
             query = f"SELECT * FROM {self.get_table_query_string()} LIMIT 5"
             cursor = execute_snowflake_statement(conn, query)
 
-            metadata = [
+            metadata: list[dict[str, Any]] = [
                 {
                     "column_name": column.name,
                     "type_code": column.type_code,
diff --git a/sdk/python/feast/infra/registry/snowflake.py b/sdk/python/feast/infra/registry/snowflake.py
index 56c7bc1f659..c1ebf13d6b8 100644
--- a/sdk/python/feast/infra/registry/snowflake.py
+++ b/sdk/python/feast/infra/registry/snowflake.py
@@ -418,7 +418,7 @@ def _delete_object(
             """
             cursor = execute_snowflake_statement(conn, query)
 
-            if cursor.rowcount < 1 and not_found_exception:
+            if cursor.rowcount < 1 and not_found_exception:  # type: ignore
                 raise not_found_exception(name, project)
             self._set_last_updated_metadata(datetime.utcnow(), project)
 
diff --git a/sdk/python/feast/infra/utils/snowflake/snowflake_utils.py b/sdk/python/feast/infra/utils/snowflake/snowflake_utils.py
index a4cda89a6f6..36588efd0fa 100644
--- a/sdk/python/feast/infra/utils/snowflake/snowflake_utils.py
+++ b/sdk/python/feast/infra/utils/snowflake/snowflake_utils.py
@@ -22,6 +22,8 @@
 import feast
 from feast.errors import SnowflakeIncompleteConfig, SnowflakeQueryUnknownError
 from feast.feature_view import FeatureView
+from feast.infra.offline_stores.snowflake import SnowflakeOfflineStoreConfig
+from feast.infra.online_stores.snowflake import SnowflakeOnlineStoreConfig
 from feast.repo_config import RepoConfig
 
 try:
@@ -43,7 +45,7 @@
 
 
 class GetSnowflakeConnection:
-    def __init__(self, config: str, autocommit=True):
+    def __init__(self, config: SnowflakeOfflineStoreConfig | SnowflakeOnlineStoreConfig, autocommit=True):
         self.config = config
         self.autocommit = autocommit