diff --git a/src/main/java/com/chaineeproject/chainee/controller/ResumeController.java b/src/main/java/com/chaineeproject/chainee/controller/ResumeController.java
index 21b4b25..8b90f10 100644
--- a/src/main/java/com/chaineeproject/chainee/controller/ResumeController.java
+++ b/src/main/java/com/chaineeproject/chainee/controller/ResumeController.java
@@ -35,7 +35,6 @@ public class ResumeController {
                             schema = @Schema(implementation = ResumeCreateRequest.class),
                             examples = @ExampleObject(value = """
                                 {
-                                  "applicantId": 123,
                                   "title": "프론트엔드 개발자 이력서",
                                   "name": "홍길동",
                                   "introduction": "React와 Next.js 기반 프로젝트를 다수 진행했습니다.",
@@ -53,10 +52,13 @@ public class ResumeController {
                             schema = @Schema(implementation = ResumeResponse.class)))
     )
     public ResponseEntity<ResumeResponse> createResume(
-            @AuthenticationPrincipal Jwt jwt, // 인증 정책에 따라 사용 여부 결정
+            @AuthenticationPrincipal Jwt jwt,
             @Valid @RequestBody ResumeCreateRequest request
     ) {
-        Long resumeId = resumeService.createResume(request);
+        Long currentUserId = com.chaineeproject.chainee.security.SecurityUtils.uidOrNull(jwt);
+        if (currentUserId == null) return ResponseEntity.status(401).build();
+
+        Long resumeId = resumeService.createResumeFor(currentUserId, request);
         return ResponseEntity.ok(new ResumeResponse(true, "RESUME_CREATED", resumeId));
     }
 
diff --git a/src/main/java/com/chaineeproject/chainee/dto/ResumeCreateRequest.java b/src/main/java/com/chaineeproject/chainee/dto/ResumeCreateRequest.java
index f456175..0c3e5e4 100644
--- a/src/main/java/com/chaineeproject/chainee/dto/ResumeCreateRequest.java
+++ b/src/main/java/com/chaineeproject/chainee/dto/ResumeCreateRequest.java
@@ -2,31 +2,35 @@
 
 import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
 import java.util.List;
 
 @Schema(name = "ResumeCreateRequest", description = "이력서 생성 요청")
 public record ResumeCreateRequest(
-        @Schema(description = "지원자 ID", example = "19")
-        @NotBlank Long applicantId,
+        @Schema(description = "이력서 제목", example = "백엔드 개발자 이력서")
+        @NotBlank @Size(max = 200)
+        String title,
 
-        @Schema(description = "이력서 제목", example = "프론트엔드 개발자 이력서")
-        @NotBlank String title,
+        @Schema(description = "지원자 이름", example = "김여은")
+        @NotBlank @Size(max = 100)
+        String name,
 
-        @Schema(description = "지원자 이름", example = "홍길동")
-        @NotBlank String name,
-
-        @Schema(description = "자기소개", example = "React와 Next.js 기반 프로젝트를 다수 진행했습니다.")
+        @Schema(description = "자기소개", example = "Spring Boot 기반 프로젝트를 다수 진행했습니다.")
+        @Size(max = 4000)
         String introduction,
 
-        @Schema(description = "희망 포지션", example = "프론트엔드 개발자")
+        @Schema(description = "희망 포지션", example = "백엔드 개발자")
+        @Size(max = 100)
         String desiredPosition,
 
-        @Schema(description = "보유 기술 목록", example = "[\"React\", \"TypeScript\", \"TailwindCSS\"]")
+        @Schema(description = "보유 기술 목록", example = "[\"Spring Boot\",\"Java\",\"MySQL\"]")
         List<String> skills,
 
         @Schema(description = "경력 수준", example = "3-5년")
+        @Size(max = 50)
         String careerLevel,
 
         @Schema(description = "포트폴리오 URL", example = "https://portfolio.example.com")
+        @Size(max = 500)
         String portfolioUrl
 ) {}
diff --git a/src/main/java/com/chaineeproject/chainee/service/ResumeService.java b/src/main/java/com/chaineeproject/chainee/service/ResumeService.java
index 7dc20c3..c1fdf8f 100644
--- a/src/main/java/com/chaineeproject/chainee/service/ResumeService.java
+++ b/src/main/java/com/chaineeproject/chainee/service/ResumeService.java
@@ -24,22 +24,22 @@ public class ResumeService {
     private final ResumeRepository resumeRepository;
 
     // ========= 생성 =========
-    public Long createResume(ResumeCreateRequest request) {
-        User applicant = userRepository.findById(request.applicantId())
+    public Long createResumeFor(Long currentUserId, ResumeCreateRequest req) {
+        User applicant = userRepository.findById(currentUserId)
                 .orElseThrow(() -> new ApplicationException(ErrorCode.APPLICANT_NOT_FOUND));
 
-        Resume resume = new Resume();
-        resume.setOwner(applicant);
-        resume.setTitle(request.title());
-        resume.setName(request.name());
-        resume.setIntroduction(request.introduction());
-        resume.setDesiredPosition(request.desiredPosition());
-        if (request.skills() != null) resume.setSkills(String.join(",", request.skills()));
-        resume.setCareerLevel(request.careerLevel());
-        resume.setPortfolioUrl(request.portfolioUrl());
-        resume.setCreatedAt(LocalDateTime.now());
+        Resume r = new Resume();
+        r.setOwner(applicant);
+        r.setTitle(req.title());
+        r.setName(req.name());
+        r.setIntroduction(req.introduction());
+        r.setDesiredPosition(req.desiredPosition());
+        if (req.skills() != null) r.setSkills(String.join(",", req.skills()));
+        r.setCareerLevel(req.careerLevel());
+        r.setPortfolioUrl(req.portfolioUrl());
+        r.setCreatedAt(LocalDateTime.now());
 
-        return resumeRepository.save(resume).getId();
+        return resumeRepository.save(r).getId();
     }
 
     // ========= 조회(본인) 목록 =========