diff --git a/apps/pyconkr-admin/src/components/elements/admin_list_filter.tsx b/apps/pyconkr-admin/src/components/elements/admin_list_filter.tsx
index e38a55e..142a0da 100644
--- a/apps/pyconkr-admin/src/components/elements/admin_list_filter.tsx
+++ b/apps/pyconkr-admin/src/components/elements/admin_list_filter.tsx
@@ -2,10 +2,7 @@ import { Add, Clear, FilterList, RestartAlt } from "@mui/icons-material";
 import { Box, Button, Chip, FormControl, IconButton, InputLabel, MenuItem, Select, Stack, TextField } from "@mui/material";
 import * as React from "react";
 
-import BackendAdminAPISchemas from "../../../../../packages/common/src/schemas/backendAdminAPI";
-
-type OpenAPIParameterSchema = BackendAdminAPISchemas.OpenAPIParameterSchema;
-type ChoicesResponse = BackendAdminAPISchemas.ChoicesResponse;
+import { ChoicesResponse, OpenAPIParameterSchema } from "../../../../../packages/common/src/schemas/backendAdminAPI";
 
 type AdminListFilterProps = {
   parameters: OpenAPIParameterSchema[];
diff --git a/apps/pyconkr-admin/src/components/pages/page/editor.tsx b/apps/pyconkr-admin/src/components/pages/page/editor.tsx
index e445b1d..c67d2d7 100644
--- a/apps/pyconkr-admin/src/components/pages/page/editor.tsx
+++ b/apps/pyconkr-admin/src/components/pages/page/editor.tsx
@@ -8,15 +8,12 @@ import { commands } from "@uiw/react-md-editor";
 import * as React from "react";
 import { useParams } from "react-router-dom";
 
-// I don't know why, I don't want to know why, I shouldn't have to wonder why,
-// but for whatever reason this stupid namespace won't import on Common.Schemas.BackendAdminAPI.PageSectionSchema.
-// TODO: FIXME: Remove this hack when the issue is resolved. This is dumb.
-import BackendAdminAPISchemas from "../../../../../../packages/common/src/schemas/backendAdminAPI";
+import { PageSectionSchema } from "../../../../../../packages/common/src/schemas/backendAdminAPI";
 import { muiTheme } from "../../../styles/globalStyles";
 import { addErrorSnackbar } from "../../../utils/snackbar";
 import { AdminEditor } from "../../layouts/admin_editor";
 
-type SectionType = BackendAdminAPISchemas.PageSectionSchema;
+type SectionType = PageSectionSchema;
 
 type CommonSectionEditorPropType = {
   disabled?: boolean;
diff --git a/apps/pyconkr-admin/src/components/pages/sitemap/list.tsx b/apps/pyconkr-admin/src/components/pages/sitemap/list.tsx
index a6cc6f5..002bb81 100644
--- a/apps/pyconkr-admin/src/components/pages/sitemap/list.tsx
+++ b/apps/pyconkr-admin/src/components/pages/sitemap/list.tsx
@@ -21,13 +21,13 @@ import { enqueueSnackbar, OptionsObject } from "notistack";
 import * as React from "react";
 import { GroupOptions, ReactSortable, SortableEvent, SortableOptions } from "react-sortablejs";
 
-import BackendAdminAPISchemas from "../../../../../../packages/common/src/schemas/backendAdminAPI";
+import { FlattenedSiteMapSchema, NestedSiteMapSchema } from "../../../../../../packages/common/src/schemas/backendAdminAPI";
 import { BackendAdminSignInGuard } from "../../elements/admin_signin_guard";
 import { AdminEditor } from "../../layouts/admin_editor";
 
-type FlatSiteMap = BackendAdminAPISchemas.FlattenedSiteMapSchema;
+type FlatSiteMap = FlattenedSiteMapSchema;
 type FlatSiteMapObj = Record<string, FlatSiteMap>;
-type NestedSiteMap = BackendAdminAPISchemas.NestedSiteMapSchema;
+type NestedSiteMap = NestedSiteMapSchema;
 type FlatNestedSiteMap = Record<string, NestedSiteMap>;
 
 const DepthColorMap: React.CSSProperties["backgroundColor"][] = [
diff --git a/apps/pyconkr/src/components/layout/BreadCrumb/index.tsx b/apps/pyconkr/src/components/layout/BreadCrumb/index.tsx
index 464b7af..483b786 100644
--- a/apps/pyconkr/src/components/layout/BreadCrumb/index.tsx
+++ b/apps/pyconkr/src/components/layout/BreadCrumb/index.tsx
@@ -3,11 +3,11 @@ import * as React from "react";
 import { Link } from "react-router-dom";
 import * as R from "remeda";
 
-import BackendAPISchemas from "../../../../../../packages/common/src/schemas/backendAPI";
+import { NestedSiteMapSchema } from "../../../../../../packages/common/src/schemas/backendAPI";
 
 type BreadCrumbPropType = {
   title: string;
-  parentSiteMaps: (BackendAPISchemas.NestedSiteMapSchema | undefined)[];
+  parentSiteMaps: (NestedSiteMapSchema | undefined)[];
 };
 
 export const BreadCrumb: React.FC<BreadCrumbPropType> = ({ title, parentSiteMaps }) => {
diff --git a/apps/pyconkr/src/components/layout/Header/index.tsx b/apps/pyconkr/src/components/layout/Header/index.tsx
index dcdb843..0ecbe1b 100644
--- a/apps/pyconkr/src/components/layout/Header/index.tsx
+++ b/apps/pyconkr/src/components/layout/Header/index.tsx
@@ -6,7 +6,7 @@ import * as React from "react";
 import { Link } from "react-router-dom";
 import * as R from "remeda";
 
-import BackendAPISchemas from "../../../../../../packages/common/src/schemas/backendAPI";
+import { NestedSiteMapSchema } from "../../../../../../packages/common/src/schemas/backendAPI";
 import { useAppContext } from "../../../contexts/app_context";
 import { CartBadgeButton } from "../CartBadgeButton";
 import LanguageSelector from "../LanguageSelector";
@@ -14,7 +14,7 @@ import { SignInButton } from "../SignInButton";
 // import { ScanCodeIconButton } from "../UserScanCodeButton";
 import { MobileHeader } from "./Mobile/MobileHeader";
 
-type MenuType = BackendAPISchemas.NestedSiteMapSchema;
+type MenuType = NestedSiteMapSchema;
 type MenuOrUndefinedType = MenuType | undefined;
 
 type NavigationStateType = {
diff --git a/apps/pyconkr/src/components/pages/sponsor_detail.tsx b/apps/pyconkr/src/components/pages/sponsor_detail.tsx
index c9e1632..064aa22 100644
--- a/apps/pyconkr/src/components/pages/sponsor_detail.tsx
+++ b/apps/pyconkr/src/components/pages/sponsor_detail.tsx
@@ -5,7 +5,7 @@ import * as React from "react";
 import { useParams } from "react-router-dom";
 import * as R from "remeda";
 
-import BackendAPISchemas from "../../../../../packages/common/src/schemas/backendAPI";
+import { SponsorTierSchema } from "../../../../../packages/common/src/schemas/backendAPI";
 import { useAppContext } from "../../contexts/app_context";
 import { PageLayout } from "../layout/PageLayout";
 
@@ -54,7 +54,7 @@ export const SponsorDetailPage: React.FC = ErrorBoundary.with(
   Suspense.with({ fallback: <CenteredLoadingPage /> }, () => {
     const { id } = useParams();
     const { language, sponsorTiers, setAppContext } = useAppContext();
-    const sponsors = sponsorTiers?.reduce((acc, tier) => [...acc, ...tier.sponsors], [] as BackendAPISchemas.SponsorTierSchema["sponsors"]);
+    const sponsors = sponsorTiers?.reduce((acc, tier) => [...acc, ...tier.sponsors], [] as SponsorTierSchema["sponsors"]);
     const sponsor = sponsors?.find((s) => s.id === id);
 
     const title = language === "ko" ? "후원사" : "Sponsor";
diff --git a/apps/pyconkr/src/contexts/app_context.tsx b/apps/pyconkr/src/contexts/app_context.tsx
index 875a772..3c56bb8 100644
--- a/apps/pyconkr/src/contexts/app_context.tsx
+++ b/apps/pyconkr/src/contexts/app_context.tsx
@@ -1,6 +1,6 @@
 import * as React from "react";
 
-import BackendAPISchemas from "../../../../packages/common/src/schemas/backendAPI";
+import { NestedSiteMapSchema, SponsorTierSchema } from "../../../../packages/common/src/schemas/backendAPI";
 
 type LanguageType = "ko" | "en";
 
@@ -9,10 +9,10 @@ export type AppContextType = {
   shouldShowTitleBanner: boolean;
   shouldShowSponsorBanner: boolean;
 
-  siteMapNode?: BackendAPISchemas.NestedSiteMapSchema;
-  sponsorTiers?: BackendAPISchemas.SponsorTierSchema[];
+  siteMapNode?: NestedSiteMapSchema;
+  sponsorTiers?: SponsorTierSchema[];
   title: string;
-  currentSiteMapDepth: (BackendAPISchemas.NestedSiteMapSchema | undefined)[];
+  currentSiteMapDepth: (NestedSiteMapSchema | undefined)[];
 
   setAppContext: React.Dispatch<React.SetStateAction<Omit<AppContextType, "setAppContext">>>;
 };