diff --git a/src/app/routes/form.$key.tsx b/src/app/routes/form.$key.tsx
index eb06e74..6b3d8f6 100644
--- a/src/app/routes/form.$key.tsx
+++ b/src/app/routes/form.$key.tsx
@@ -10,18 +10,19 @@ import { CompletePage } from 'src/pages/form/complete/CompletePage';
 import { useProfileFirstName } from 'src/entities/profile/lib/useProfileFirstName';
 import { Shortcut } from 'src/processes/shortcut/Shortcut';
 import styles from 'src/app/styles/form.module.css';
-import { validateLink } from 'src/types';
-import { json, LoaderFunctionArgs } from '@remix-run/node';
+import { saveInfo, validateLink } from 'src/types';
+import { ActionFunctionArgs, json, LoaderFunctionArgs } from '@remix-run/node';
+import { useLoaderData } from '@remix-run/react';
 
 const MAX_STEP_COUNT = 7;
 
-const createFormPageStep = ({ name, increase }: { name: string; increase: () => void }) => ({
+const createFormPageStep = ({ name, linkKey, increase }: { name: string; linkKey: string; increase: () => void }) => ({
   0: <ProfileFormIntroPage onClickNextStep={increase} />,
   1: <MyProfilePage onClickNextStep={increase} />,
   2: <IdealPartnerIntroPage name={name} onClickNextStep={increase} />,
   3: <IdealPartnerPage onClickNextStep={increase} />,
   4: <FormConfirmPage onClickNextStep={increase} />,
-  5: <UploadLoadingPage name={name} onComplete={increase} />,
+  5: <UploadLoadingPage name={name} linkKey={linkKey} onComplete={increase} />,
   6: <CompletePage />,
 });
 
@@ -32,18 +33,39 @@ export const loader = async ({ params }: LoaderFunctionArgs) => {
   const { data } = await validateLink(key);
   if (!data.isValid) throw new Response('', { status: 404 });
 
-  return json({ linkId: data.linkId });
+  return json({ linkKey: key });
 };
 
-export const action = async () => {};
+export const action = async ({ request }: ActionFunctionArgs) => {
+  const body = await request.formData();
+  const linkKey = body.get('linkKey');
+  if (typeof linkKey !== 'string') return { status: 400 };
+
+  const { data, status } = await saveInfo(
+    // TODO: zod로 타입 체크
+    // TODO: 이미지 업로드
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-ignore
+    { userInfo: JSON.parse(body.get('userInfo')), idealPartner: JSON.parse(body.get('idealPartner')) },
+    { linkKey },
+    {
+      headers: {
+        Authorization: `Bearer ${import.meta.env.VITE_DEV_JWT_TOKEN}`,
+      },
+    },
+  );
+
+  return { status, data };
+};
 
 export default function ProfileFormPage() {
+  const { linkKey } = useLoaderData<typeof loader>();
   const name = useProfileFirstName();
 
   const [step, setStep] = useState(0);
   const increase = () => setStep((prev) => (prev + 1 < MAX_STEP_COUNT ? prev + 1 : prev));
 
-  const formPageStep = useMemo(() => createFormPageStep({ name, increase }), [name]);
+  const formPageStep = useMemo(() => createFormPageStep({ name, linkKey, increase }), [linkKey, name]);
 
   const showShortcut = [1, 3, 4].includes(step);
 
diff --git a/src/entities/profile/model/convertProfileToDto.ts b/src/entities/profile/model/convertProfileToDto.ts
index 98e3aa1..6feb8b9 100644
--- a/src/entities/profile/model/convertProfileToDto.ts
+++ b/src/entities/profile/model/convertProfileToDto.ts
@@ -5,7 +5,7 @@ import { convertDateObjectToDate } from 'src/shared/vo/date';
 export const convertProfileToDto = (profile: MyProfile, images: ImageDto[]): UserInfoRequest => {
   return {
     name: profile.name,
-    birthDate: convertDateObjectToDate(profile.birthDate).toString(),
+    birthDate: convertDateObjectToDate(profile.birthDate).toISOString(),
     drinking: profile.drinking,
     // TODO: 오타 고쳐지면 삼항연산자 부분 삭제
     gender: profile.gender === 'FEMALE' ? 'FEAMLE' : 'MALE',
diff --git a/src/pages/form/complete/UploadLoadingPage.tsx b/src/pages/form/complete/UploadLoadingPage.tsx
index eaa13e3..66cbafb 100644
--- a/src/pages/form/complete/UploadLoadingPage.tsx
+++ b/src/pages/form/complete/UploadLoadingPage.tsx
@@ -1,15 +1,45 @@
 import { InfoBox } from 'src/shared/ui/InfoBox/InfoBox';
 import styles from './UploadLoadingPage.module.css';
 import { useEffect } from 'react';
+import { useActionData, useSubmit } from '@remix-run/react';
+import { action } from 'src/app/routes/form.$key';
+import { convertProfileToDto } from 'src/entities/profile/model/convertProfileToDto';
+import { convertIdealPartnerToDto } from 'src/entities/ideal_partner/model/convertIdealPartnerToDto';
+import { useMyProfileStore } from 'src/entities/profile/model/myProfileStore';
+import { useIdealPartnerStore } from 'src/entities/ideal_partner/model/idealPartnerStore';
+
+export const UploadLoadingPage = ({
+  name,
+  linkKey,
+  onComplete,
+}: {
+  name: string;
+  linkKey: string;
+  onComplete: () => void;
+}) => {
+  const result = useActionData<typeof action>();
+  const submit = useSubmit();
+
+  const profile = useMyProfileStore((state) => state);
+  const idealPartner = useIdealPartnerStore((state) => state);
 
-export const UploadLoadingPage = ({ name, onComplete }: { name: string; onComplete: () => void }) => {
   useEffect(() => {
-    const timer = setTimeout(onComplete, 5_000);
-    return () => {
-      clearTimeout(timer);
-    };
+    submit(
+      {
+        linkKey,
+        userInfo: JSON.stringify(convertProfileToDto(profile, [])),
+        idealPartner: JSON.stringify(convertIdealPartnerToDto(idealPartner, [])),
+      },
+      { method: 'post' },
+    );
   }, []);
 
+  useEffect(() => {
+    if (result?.status === 200) {
+      onComplete();
+    }
+  }, [onComplete, result?.status]);
+
   return (
     <div className={styles.Wrapper}>
       <div className={styles.TitleSection}>