diff --git a/backend/src/apps/common/index_types.py b/backend/src/apps/common/index_types.py
new file mode 100644
index 0000000000..af3b3c4089
--- /dev/null
+++ b/backend/src/apps/common/index_types.py
@@ -0,0 +1,99 @@
+"""Type definitions for search index results."""
+
+from __future__ import annotations
+
+from typing import TypedDict
+
+
+class UserSearchHit(TypedDict, total=False):
+    """GitHub user search hit."""
+
+    idx_bio: str | None
+    idx_company: str | None
+    idx_followers_count: int
+    idx_following_count: int
+    idx_location: str | None
+    idx_login: str
+    idx_name: str | None
+    idx_public_repositories_count: int
+    idx_url: str
+
+
+class ChapterSearchHit(TypedDict, total=False):
+    """OWASP chapter search hit."""
+
+    idx_country: str
+    idx_key: str
+    idx_leaders: list[str]
+    idx_name: str
+    idx_suggested_location: str | None
+    idx_summary: str
+    idx_url: str
+
+
+class CommitteeSearchHit(TypedDict, total=False):
+    """OWASP committee search hit."""
+
+    idx_leaders: list[str]
+    idx_name: str
+    idx_summary: str
+    idx_url: str
+
+
+class IssueSearchHit(TypedDict, total=False):
+    """GitHub issue search hit."""
+
+    idx_project_name: str
+    idx_project_url: str
+    idx_summary: str
+    idx_title: str
+    idx_url: str
+
+
+class ProjectSearchHit(TypedDict, total=False):
+    """OWASP project search hit."""
+
+    idx_contributors_count: int
+    idx_forks_count: int
+    idx_key: str
+    idx_leaders: list[str]
+    idx_name: str
+    idx_stars_count: int
+    idx_summary: str
+    idx_updated_at: int
+    idx_url: str
+
+
+class UserSearchResult(TypedDict):
+    """Result returned by a GitHub user search."""
+
+    hits: list[UserSearchHit]
+    nbPages: int
+
+
+class ChapterSearchResult(TypedDict):
+    """Result returned by an OWASP chapter search."""
+
+    hits: list[ChapterSearchHit]
+    nbPages: int
+
+
+class CommitteeSearchResult(TypedDict):
+    """Result returned by an OWASP committee search."""
+
+    hits: list[CommitteeSearchHit]
+    nbPages: int
+
+
+class IssueSearchResult(TypedDict):
+    """Result returned by a GitHub issue search."""
+
+    hits: list[IssueSearchHit]
+    nbPages: int
+
+
+class ProjectSearchResult(TypedDict):
+    """Result returned by an OWASP project search."""
+
+    hits: list[ProjectSearchHit]
+    nbPages: int
diff --git a/backend/src/apps/github/index/search/user.py b/backend/src/apps/github/index/search/user.py
index 4cc99ec11e..ed8303d201 100644
--- a/backend/src/apps/github/index/search/user.py
+++ b/backend/src/apps/github/index/search/user.py
@@ -2,6 +2,11 @@
 
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from apps.common.index_types import UserSearchResult
+
 from algoliasearch_django import raw_search
 
 from apps.github.models.user import User
@@ -9,11 +14,11 @@
 
 def get_users(
     query: str,
-    attributes: list | None = None,
+    attributes: list[str] | None = None,
     limit: int = 25,
     page: int = 1,
-    searchable_attributes: list | None = None,
-) -> dict:
+    searchable_attributes: list[str] | None = None,
+) -> UserSearchResult:
     """Return users relevant to a search query.
 
     Args:
diff --git a/backend/src/apps/owasp/index/search/chapter.py b/backend/src/apps/owasp/index/search/chapter.py
index 036ca0074c..47a7e27616 100644
--- a/backend/src/apps/owasp/index/search/chapter.py
+++ b/backend/src/apps/owasp/index/search/chapter.py
@@ -2,6 +2,11 @@
 
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from apps.common.index_types import ChapterSearchResult
+
 from algoliasearch_django import raw_search
 
 from apps.owasp.models.chapter import Chapter
@@ -10,11 +15,11 @@
 def get_chapters(
     query: str,
     *,
-    attributes: list | None = None,
+    attributes: list[str] | None = None,
     limit: int = 25,
     page: int = 1,
-    searchable_attributes: list | None = None,
-) -> dict:
+    searchable_attributes: list[str] | None = None,
+) -> ChapterSearchResult:
     """Return chapters relevant to a search query.
 
     Args:
diff --git a/backend/src/apps/owasp/index/search/committee.py b/backend/src/apps/owasp/index/search/committee.py
index 3b951f0e76..5de30f2238 100644
--- a/backend/src/apps/owasp/index/search/committee.py
+++ b/backend/src/apps/owasp/index/search/committee.py
@@ -2,6 +2,11 @@
 
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from apps.common.index_types import CommitteeSearchResult
+
 from algoliasearch_django import raw_search
 
 from apps.owasp.models.committee import Committee
@@ -10,10 +15,10 @@
 def get_committees(
     query: str,
     *,
-    attributes: list | None = None,
+    attributes: list[str] | None = None,
     limit: int = 25,
     page: int = 1,
-) -> dict:
+) -> CommitteeSearchResult:
     """Return committees relevant to a search query.
 
     Args:
diff --git a/backend/src/apps/owasp/index/search/issue.py b/backend/src/apps/owasp/index/search/issue.py
index a1e7d07916..2346d953d4 100644
--- a/backend/src/apps/owasp/index/search/issue.py
+++ b/backend/src/apps/owasp/index/search/issue.py
@@ -2,6 +2,11 @@
 
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from apps.common.index_types import IssueSearchResult
+
 from algoliasearch_django import raw_search
 
 from apps.github.models.issue import Issue
@@ -12,11 +17,11 @@
 def get_issues(
     query: str,
     *,
-    attributes: list | None = None,
+    attributes: list[str] | None = None,
     distinct: bool = False,
     limit: int = 25,
     page: int = 1,
-) -> dict:
+) -> IssueSearchResult:
     """Return issues relevant to a search query.
 
     Args:
diff --git a/backend/src/apps/owasp/index/search/project.py b/backend/src/apps/owasp/index/search/project.py
index e0bb2950e0..e3c919b9ba 100644
--- a/backend/src/apps/owasp/index/search/project.py
+++ b/backend/src/apps/owasp/index/search/project.py
@@ -2,6 +2,11 @@
 
 from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from apps.common.index_types import ProjectSearchResult
+
 from algoliasearch_django import raw_search
 
 from apps.owasp.models.project import Project
@@ -10,11 +15,11 @@
 def get_projects(
     query: str,
     *,
-    attributes: list | None = None,
+    attributes: list[str] | None = None,
     limit: int = 25,
     page: int = 1,
-    searchable_attributes: list | None = None,
-) -> dict:
+    searchable_attributes: list[str] | None = None,
+) -> ProjectSearchResult:
     """Return projects relevant to a search query.
 
     Args:
diff --git a/backend/src/apps/slack/common/handlers/users.py b/backend/src/apps/slack/common/handlers/users.py
index 492a0719cc..088e3a4e0e 100644
--- a/backend/src/apps/slack/common/handlers/users.py
+++ b/backend/src/apps/slack/common/handlers/users.py
@@ -78,8 +78,8 @@ def get_blocks(
 
         bio = truncate(escape(user.get("idx_bio", "") or ""), presentation.summary_truncation)
 
-        location = escape(user.get("idx_location", ""))
-        company = escape(user.get("idx_company", ""))
+        location = escape(user.get("idx_location", "") or "")
+        company = escape(user.get("idx_company", "") or "")
         followers_count = user.get("idx_followers_count", 0)
         following_count = user.get("idx_following_count", 0)
         public_repositories = user.get("idx_public_repositories_count", 0)
diff --git a/backend/tests/unit/apps/slack/common/handlers/users_test.py b/backend/tests/unit/apps/slack/common/handlers/users_test.py
index da2bff4cd3..8efe02e86e 100644
--- a/backend/tests/unit/apps/slack/common/handlers/users_test.py
+++ b/backend/tests/unit/apps/slack/common/handlers/users_test.py
@@ -123,6 +123,32 @@ def test_get_blocks_with_empty_metadata_fields(self, mocker):
         assert "Location:" not in user_block_text
         assert "Followers:" not in user_block_text
 
+    def test_get_blocks_with_none_metadata_fields(self, mocker):
+        """Test users with nullable metadata fields."""
+        mock_data = {
+            "hits": [
+                {
+                    "idx_name": "User NoMeta",
+                    "idx_login": "user_nometa",
+                    "idx_url": "https://github.com/user_nometa",
+                    "idx_bio": None,
+                    "idx_location": None,
+                    "idx_company": None,
+                    "idx_followers_count": 0,
+                    "idx_following_count": 0,
+                    "idx_public_repositories_count": 0,
+                }
+            ],
+            "nbPages": 1,
+        }
+        mocker.patch("apps.github.index.search.user.get_users", return_value=mock_data)
+
+        blocks = get_blocks()
+
+        user_block_text = blocks[1]["text"]["text"]
+        assert "Company:" not in user_block_text
+        assert "Location:" not in user_block_text
+
     def test_get_blocks_with_no_name_uses_login(self, mocker):
         """Test users with no name field uses login instead."""
         mock_data = {