How to Write a Korean Self-Introduction Letter (자기소개서) as a Foreign Applicant

Most foreign applicants lose Korean job opportunities before anyone reads their experience. The problem is the document itself. A Western-style cover letter, even well-translated, is the wrong format for a Korean job application. Korean companies require a self-introduction letter (자기소개서, jagisogaeseo, also called 자소서 jasoSeo): a structured set of prompted essays, written in formal polite Korean, responding to specific questions the employer sets. Submitting the wrong document type is treated as a format failure at the document-screening stage (서류전형, seoyu jeonhyeong) at traditional Korean firms. This guide shows you exactly what the 자기소개서 requires, section by section, with Korean sample opening lines, the real differences between company types, and an honest assessment of the language path forward.

Before you read further: the Seoulstart Korean Resume tool builds your 이력서 in the correct format and gives you the standard 자소서 section structure. Start there, then use this guide to fill in your content.

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What 자기소개서 is (and is not)

Not a cover letter

The 자기소개서 is not:

• A letter addressed to a hiring manager
• A résumé summary or LinkedIn bio
• A personal essay in the Western narrative style
• A translated version of what you wrote for a Western application

What it is

The 자기소개서 is a set of structured prompted essays. Each prompt is a specific question. You answer each question in formal Korean, within a fixed character limit. At Korean SMEs and mid-size companies, you fill this into a standard template (often from Saramin or JobKorea) and submit as a file. At chaebols and large companies, you type directly into a proprietary online portal.

Korean HR uses the 자소서 for two things:

1. Motivational and cultural fit: whether you have done real research on this specific company and role.
2. Korean writing competence: whether you can write professional formal Korean at white-collar standard.

Both are tested simultaneously. A 자소서 that is excellent in content but written in mixed registers will fail the second test. A 자소서 that is polished in Korean but contains only generic statements will fail the first.

For the resume component (이력서, iryeokseo) that accompanies the 자소서, see the Korean resume guide. This guide focuses on the written essay sections.

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The four standard sections

Most Korean SMEs and mid-size firms use a four-section structure. Each section below includes the Korean name and romanization, what the recruiter is actually testing, the typical character limit, the most common mistakes foreign applicants make, and a Korean sample opening line.

Section 1: 성장과정 (seongjang gwajung), formative experiences

What the recruiter is testing: A value you hold, anchored in one concrete experience that formed it, connected to how you work professionally. Korean HR is not looking for autobiography. They are looking for character evidence.

Typical character limit: 500 to 1,000 Korean characters.

Most common mistakes:

• Opening with birth, parents, or childhood in a Western autobiographical sweep
• Writing a long emotional family story without stating a professional value
• Using the widely flagged "엄격한 아버지와 자상한 어머니" (strict father, warm mother) opening, which Korean career advisors mark as an overused cliché
• Generic moralizing with no specific experience attached

Structure that works: State a value. Name one experience that tested or formed that value. Connect explicitly to your professional behavior. Use the STAR framework (상황-과제-행동-결과, situation, task, action, result) if the experience lends itself to it.

Sample Korean opening: "책임감은 제가 어떤 어려움 앞에서도 끝까지 해결책을 찾게 만드는 원동력입니다." (Responsibility is the force that drives me to find a solution even when facing difficulty.)

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Section 2: 성격/직무역량 (seonggyeok/jimmu yeokryang), personality and job competency

What the recruiter is testing: Demonstrable strengths tied to specific examples from your actual work or study, and weaknesses that are real, low-stakes, and paired with active steps you took to address them.

Typical character limit: 600 to 1,000 Korean characters.

Most common mistakes:

• "팀워크가 좋습니다" (I have good teamwork) with no evidence. Generic trait claims with no examples are immediately dismissed.
• The weakness-that-is-actually-a-strength trick. Korean HR recognizes this as evasion.
• Listing strengths that do not map to the job description. Your strengths must connect directly to what the JD lists as requirements.

Structure that works: Name one clear strength. Give one specific example with a measurable outcome if possible. Name a genuine weakness that is low-stakes for the role. Describe concretely what you have done to address it.

Sample Korean opening: "저의 가장 큰 강점은 데이터를 기반으로 명확한 의사결정을 내리는 능력입니다." (My greatest strength is the ability to make clear decisions grounded in data.)

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Section 3: 지원동기 (jiwon donggi), reason for applying

What the recruiter is testing: Whether you have done specific research on this company and this role. A 지원동기 that could be sent to any company is a known disqualifier.

Typical character limit: 700 to 1,000 Korean characters.

Three required elements:

1. Specific company knowledge: reference a recent news item, the annual report (사업보고서), a product launch, or a strategic direction statement.
2. Specific role knowledge: reference the job description directly, including tools, responsibilities, or challenges named in it.
3. Why your background matches this specific role at this specific company.

What does not work:

• "귀사는 업계의 선두주자로서..." (Your esteemed company, as a leader in the industry...), generic praise that tells the recruiter you did not research them
• Reciting the company's mission statement back to them
• Mentioning Korea generally, or your interest in Korean culture

Sample Korean opening: "귀사의 2026년 상반기 보고서에서 [specific segment] 사업의 글로벌 확장 계획을 확인하였습니다." (In your 2026 first-half report, I confirmed the global expansion plan for [specific business segment].)

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Section 4: 입사 후 포부 (ipsa hu pobu), post-hire goals

What the recruiter is testing: Whether you have a realistic, role-specific picture of what you will contribute, not a vague aspiration or a premature leadership claim.

Typical character limit: 500 to 700 Korean characters.

What does not work:

• Vague aspiration: "I want to grow with the company"
• Premature ambition: "I plan to lead the department within three years"
• Personal milestones outside the company's interests

Structure that works: Year 1 as a learning-and-delivery phase. Years 2 to 3 as a contribution-and-ownership phase. Longer-term framed as company benefit, not personal career plan. Each timeframe tied to specific role responsibilities named in the JD.

Sample Korean opening: "입사 후 첫 1년은 팀의 현재 프로세스를 깊이 이해하고, [specific role responsibility]에서 즉시 기여할 수 있는 역량을 빠르게 갖추는 데 집중하겠습니다." (In the first year after joining, I will focus on deeply understanding the team's current processes and quickly building the competency to contribute immediately in [specific role responsibility].)

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Tone, register, and pronouns

존댓말 throughout

Every sentence in a 자소서 must use 존댓말 (jondaemal), the formal polite speech register. The correct sentence endings are -합니다, -습니다, -했습니다, -이었습니다. Never use -해요, -해, -했어요, or any informal ending. Mixing registers within a single document is an immediate red flag to Korean HR. A human reader spots it in the first pass.

Before: "그 경험을 통해 협업의 중요성을 배웠어요." After: "그 경험을 통해 협업의 중요성을 배웠습니다."

The difference is one word. The implication to a Korean recruiter is the difference between a professional applicant and one who has not mastered formal writing.

First person: 저, not 나

Use 저 (jeo) as the first-person pronoun. This is the formal form. Never use 나 (na), which is casual Korean. More importantly: drop the subject pronoun when context is clear. Korean naturally omits the subject. Overusing 저는/저의 in every sentence reads as translated-from-English. Write naturally in the direction of the language.

Overuse pattern (machine-translated feel): 저는 이 경험에서 많은 것을 배웠습니다. 저는 그때 팀을 이끌었습니다. 저는 결과를 분석했습니다.

Natural Korean pattern: 이 경험에서 많은 것을 배웠습니다. 당시 팀을 이끌었고, 결과를 분석하였습니다.

Forbidden phrases

These phrases appear so frequently in machine-generated and poorly translated 자소서 that Korean HR recognizes them immediately as indicators of low-effort or AI-produced text:

• "귀사의 발전에 이바지하겠습니다" (I will contribute to your company's development), hollow and generic
• "평소 ~을 좋아하던 저는" (As someone who has always liked ~), unverifiable filler
• "늘 최선을 다하는" (always giving my best), empty phrase
• "글로벌 인재" (global talent), overused buzzword
• "이 자리를 빌어..." (Taking this opportunity to...), identified as machine-output opener
• "정말 영광입니다" (It is a great honor), filler
• "저는 항상 ~에 열정을 가지고 있습니다" (I have always been passionate about ~), Western-origin cliché, widely recognized

Formal Korean phrases that work

Use these phrases precisely and sparingly. Overuse of any of them also reads as machine output:

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What changes at chaebols

Samsung, SK Hynix, LG Electronics, and Hyundai Motor do not use the standard four-section format. Each runs a proprietary online portal with its own prompts, and those prompts change every recruitment cycle (공채, gongchae). The information below is a snapshot of the 2025 하반기 (second-half) cycle sourced via aggregators, so treat it as roughly one year stale against the current 하반기 cycle. Verify every prompt directly on each company's portal before applying. Prompt text and character limits change.

Samsung Electronics

Samsung runs two major recruitment cycles per year (상반기 spring and 하반기 autumn). In 2025, Samsung expanded its foreign student applicant track to additional affiliated companies, with reporting naming Samsung Electro-Mechanics, Samsung Biologics, Samsung C&T, and Samsung Bioepis among the newly added affiliates. For foreign applicants at master's or doctoral level, reporting on the cycle described the prior work-experience requirement being satisfied by the degree itself, and a TOPIK Level 3 minimum for the foreign student track, with the application process and interviews conducted in Korean. Treat these as cycle-specific details and confirm the current affiliates, eligibility, and language rules on Samsung's careers portal before applying.

Samsung Electronics 2025 cycle prompts (from aggregators. Verify against samsungcareers.com for the current cycle before applying):

1. 삼성전자를 지원한 이유와 입사 후 회사에서 이루고 싶은 꿈을 기술하십시오. (700자 이내) Why you are applying to Samsung Electronics and what goal you want to achieve at the company after joining. (700 Korean characters; an English character-limit option was available at this prompt, verify whether this applies to your track.)

2. 본인의 성장과정을 간략히 기술하되 현재의 자신에게 가장 큰 영향을 끼친 사건, 인물 등을 포함하여 기술하시기 바랍니다. (1,500자 이내) Briefly describe your formative background, including the events and people who have most influenced who you are today. (1,500 Korean characters)

3. 최근 사회 이슈 중 중요하다고 생각되는 한 가지를 선택하고 이에 관한 자신의 견해를 기술해 주시기 바랍니다. (1,000자 이내) Choose one current social issue you consider important and describe your view on it. (1,000 Korean characters)

4. 지원 직무 관련 본인의 전문지식과 경험을 작성하고, 본인이 지원 직무에 적합한 사유를 삼성전자 제품과 서비스 사용 경험을 기반으로 기술하시기 바랍니다. (1,000자 이내) Describe your specialist knowledge and experience relevant to the role you are applying for, and explain why you are a fit for that role based on your experience with Samsung products and services. (1,000 Korean characters)

Prompt 3, asking for an opinion on a current social issue, has no parallel in the standard four-section format. It requires an original and defensible position in formal Korean. Do not provide a generic or evasive answer.

SK Hynix

SK Hynix's 2025 하반기 cycle used 4 prompts: 3 required and 1 optional, each capped at 600 Korean characters.

SK Hynix 2025 하반기 prompts (from aggregators. Verify against careers.skhynix.com for the current cycle before applying):

1. 지원하신 직무 분야의 전문성을 키우기 위해 꾸준히 노력한 경험에 대해 서술해주세요. (600자) Describe the sustained effort you have made to develop your expertise in the field you are applying for. (600 characters)

2. 팀워크 관련 경험. (600자), Verify exact prompt text at careers.skhynix.com. Teamwork-related experience. (600 characters)

3. 도전/성취 관련 경험. (600자), Verify exact prompt text at careers.skhynix.com. Challenge or achievement-related experience. (600 characters)

4. 해시태그(#)를 포함하여 자유롭게 표현해 주세요. (600자, 최대 2개, optional) Express yourself freely using hashtags. (600 characters, up to 2 hashtags, optional)

Prompt 4 is an optional personality question with no equivalent in the standard format. It is typically used to show personality keywords concisely. One format used by applicants: #성실함 #데이터기반사고.

LG Electronics

LG Electronics reduced its 자소서 from 3 questions to 2 questions in the 2025 하반기 (second-half) cycle. Verify whether this 2-question format continues into 2026 at lg.com/kr/careers.

LG Electronics 2025 하반기 prompts (from aggregators. Verify against lg.com/kr/careers for the current cycle):

1. 지원동기 및 향후계획: 본인의 직무관련 경험과 강점에 기반하여 LG전자에 대한 지원동기를 작성해주세요. (1,000자) Reason for applying and future plan: based on your job-related experience and strengths, describe why you are applying to LG Electronics. (1,000 characters, this prompt accounts for 60% of the evaluation score.)

2. 역경극복: 대학교 시절을 포함한 이후 인생에서 직면했던 어려운 과제와, 이를 극복했던 경험에 대해 기술하여 주세요. (600자) Overcoming adversity: describe a difficult challenge you faced in your life, including during university, and how you overcame it. (600 characters)

Prompt 1 carries 60% of the evaluation score. Invest proportionate effort.

Hyundai Motor

Hyundai Motor's 2025 cycle used 2 prompts, each capped at 1,000 Korean characters. The "Hyundai Way" framework of 5 corporate values sits behind the evaluation rather than appearing as a direct prompt instruction, so weave the relevant values into your answers instead of waiting for the form to ask for them by name.

Hyundai Way 5 core values (the implicit evaluation framework):

• 고객 최우선 (Customer First)
• 도전적 실행 (Challenge)
• 소통과 협력 (Collaboration)
• 인재 존중 (People)
• 글로벌 지향 (Globality)

Hyundai Motor 2025 prompts (from aggregators. Verify against careers.hyundai.com for the current cycle):

1. 현대자동차에 지원한 동기와 입사 후 성장 계획을 기술해 주세요. (1,000자) Describe your motivation for applying to Hyundai Motor and your growth plan after joining. (1,000 characters)

2. 본인이 가진 가장 중요한 역량과 이를 개발하기 위해 기울인 노력을 기술해 주세요. (1,000자) Describe the most important competency you have and the effort you made to develop it. (1,000 characters)

Both prompts are evaluated against the Hyundai Way values, so read the Hyundai Way documentation before writing and anchor your motivation, growth plan, and core competency in the values that genuinely fit your experience. Vague or misquoted values signal you did not research the company.

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Startups, MNCs, and public sector

Korean startups on Wanted (원티드)

Many startups on Wanted accept English cover notes or skip the structured 자소서 entirely, particularly companies posting in English or tagging postings as 영어 가능 (English OK) or 외국인 가능 (foreign applicants accepted).

If the posting is in Korean and has no English-OK tag, Korean 자소서 is expected. Check the posting language as the primary signal.

The Korean job platforms guide explains how to read Wanted postings and filter for foreign-applicant-accessible roles.

MNC Korea offices

Korean offices of multinational companies typically accept a Western-style cover note or an English 자소서. Applications usually go through LinkedIn or a company portal. The structured Korean 자소서 is generally not required. The interview process at MNC offices is more likely to be in English or bilingual, depending on the team.

Public sector (공기업)

Korea's public-sector blind hiring standard (블라인드채용, beullaindeu chaeyong) bars public institutions and local public enterprises from requesting hometown (출신지역), family background (가족관계), physical conditions including appearance and photo (용모·사진), and school (학력) on application forms. The standard public-sector resume (표준이력서, pyojun iryeokseo) has no photo field, so photos are effectively banned from public-sector applications. The Fair Hiring Procedure Act provides the legal basis for this framework. Under the Act, no employer may demand that a job applicant include information not necessary for performing the job, including physical conditions such as appearance, height, and weight; place of birth, marital status, and property; and the academic background, occupation, and property of the applicant's lineal ascendants, descendants, and siblings. The Act applies to businesses that employ a regular workforce of at least 30 employees, and in the private sector its prohibitions are narrower than the full public-sector blind standard, so private-sector chaebol portals still commonly ask for a photo and do not run full blind hiring.

The 자소서 at public-sector institutions uses National Competency Standards (NCS, 국가직무능력표준) prompts focused on 10 core competencies: communication, numerical literacy, problem-solving, self-development, resource management, interpersonal skills, information literacy, technology application, organizational understanding, and professional ethics.

In practice, most public-sector positions require Korean citizenship or permanent residency (F-5). Some positions accept F-2 (long-term residency) or F-4 (overseas Korean heritage). Foreign applicants on other visas are rarely eligible at entry level. Check the specific posting at work.go.kr or at the institution's own portal before investing time.

For roles on the E-7 skilled worker visa track, see the E-7 occupation codes guide.

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The honest path on language

Default: Korean submission with a human proofreader

For any traditional Korean company, the default path is to write your 자소서 in Korean and then have a Korean-native proofreader who specializes in 자소서 conventions review the final draft.

This is not about your Korean level. It is about the gap between conversational Korean and professional-document Korean. Even applicants with TOPIK Level 5 often benefit from 자소서 첨삭 because the conventions of formal professional writing are a separate skill from spoken fluency.

Where to find a proofreader:

• Saramin 자소서 첨삭: The job platform's own proofreading service (saramin.co.kr)
• JobKorea career consultation: Career advisor services (jobkorea.co.kr)
• KOWORK: Foreign-applicant career support in English, including 자소서 guidance (kowork.kr)
• 크몽 (Kmong): Freelance platform with 자소서 editors at varying rates (kmong.com)
• 숨고 (Soomgo): Another freelance platform option (soomgo.com)

Search specifically for 자소서 첨삭 specialists, not general Korean editors or translators. The conventions of job-application writing are distinct from other Korean writing contexts.

Exception: English-first roles

English submission is appropriate when:

• The job posting is in English
• The posting is tagged 영어 가능 or 외국인 가능 on Wanted
• The posting explicitly requests an English 자소서 or English cover letter
• You are applying to an MNC Korea office and the role description is in English

When in doubt, check what language the job description itself is in. That is the clearest signal.

The AI-generated text reality

Saramin and other Korean job platforms have written about AI-generated 자소서, and the practical takeaway is that document-stage detection is not where the risk lives. The real risk is the interview: if your 자소서 makes claims you cannot defend in Korean face-to-face, the application ends there.

Write from real experience you can speak to. If you use AI as a structural drafting tool, have a human with 자소서 expertise review and rewrite the Korean text before submission.

Use the Seoulstart Korean Resume tool to get a structured baseline draft with the correct section headers and format. Then bring in a Korean-native proofreader for the language.

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Translation pitfalls

Seven failure modes to avoid when producing Korean text through translation from another language:

1. Honorific level shifts mid-document. Machine translation frequently produces 존댓말 in one paragraph and informal 해요체 or plain 해라체 in another. Read every ending aloud. Every sentence must close on -합니다 or -습니다.

2. Subject pronoun overuse. Excessive 저는/저의 repetitions signal English-origin structure. Korean grammar does not require restating the subject when context is clear. Remove 저는 from sentences where who is acting is already obvious.

3. English idioms translated literally. "I wear many hats" (저는 여러 모자를 씁니다), "thinking outside the box" (상자 밖에서 생각하기), and "rolling up my sleeves" produce confusing or comic results in Korean. Identify any idiom in your English draft and rewrite it with its actual meaning before translating.

4. Sentence rhythm. Korean professional prose uses moderately long sentences with subordinate clauses in logical sequence. Machine translation of English tends to produce short, choppy sentences that follow English rhythm. The result reads unnatural to Korean HR.

5. Wrong professional vocabulary. Conversational Korean vocabulary is not professional-document vocabulary. The word you learned in a language class may be accurate but register-inappropriate in a formal document context. A Korean-native proofreader will catch these.

6. Cliché openers. "이 자리를 빌어..." and "정말 영광입니다" are recognized as machine-output openers. Korean career advisors flag them in 자소서 prep materials as patterns to avoid.

7. Generic family narrative. Opening 성장과정 with "엄격한 아버지와 자상한 어머니 아래서 자라며..." (Growing up under a strict father and warm mother...) is so common in Korean-language 자소서 prep guides that it has become a cliché marker. Korean HR recognizes it immediately. Open with a professional value instead.

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Worked example: foreign software engineer

The following is a structural outline for a 자소서 for a Korean fintech startup on Wanted. This is not a template to copy. It shows the angle, evidence, and Korean opening for each section. Replace every element with your own actual experience.

Applicant profile: Nguyen Van An, 32, Vietnamese national, F-4 visa, 5 years as a backend engineer at a Vietnamese fintech company, TOPIK Level 4, applying for a senior backend engineering role at a Korean fintech startup that recently announced a Southeast Asia expansion.

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Section 1: 성장과정 (500자)

Value: Responsibility in the face of incomplete information.

Anchor experience: Mid-project, the senior engineer leading a legacy payment system migration resigned. Nguyen took over ownership of the migration, worked with fragmented documentation, and delivered the system on schedule.

Connection to the role: At this company, scaling core payment infrastructure will require the same approach.

Korean opening: "불완전한 정보 속에서도 결과에 대한 책임감을 잃지 않는 것이 제가 일하는 방식의 핵심입니다." (Maintaining responsibility for results even in the face of incomplete information is the core of how I work.)

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Section 2: 직무역량 (600자)

Strength: Architectural design for high-throughput, low-latency payment systems.

Evidence: Designed the settlement engine at his previous company, which handled a specific TPS load and reduced latency by a specific percentage. Name the actual numbers from your own work.

Connection: The company's 2025 engineering blog post specifically describes this scaling challenge as their current priority.

Korean opening: "저의 핵심 역량은 고처리량 결제 시스템의 아키텍처 설계에 있습니다." (My core competency is in the architectural design of high-throughput payment systems.)

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Section 3: 지원동기 (700자)

Specific company research: The company's Series B announcement mentioned the CEO's stated goal for Vietnam and Southeast Asia expansion.

Specific role knowledge: The job description names Kafka and Kubernetes experience. Reference both by name.

Match: Five years of Vietnamese fintech experience plus TOPIK Level 4 positions Nguyen as someone who brings both the technical competency the JD specifies and direct insight into the market the company is entering.

Korean opening: "귀사의 [specific press release or announcement] 기사를 통해 동남아 시장 확장 계획을 확인하였습니다." (Through your [specific announcement], I confirmed your Southeast Asia expansion plan.)

Replace the bracketed text with the specific source you researched.

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Section 4: 입사 후 포부 (500자)

Year 1: Understand the existing codebase, build trust through reliable delivery, begin contributing to architecture discussions with accumulated context.

Years 2 to 3: Take ownership of one core subsystem. Mentor more junior engineers. Act as a bridge between the Korean engineering team and Southeast Asia market context.

Longer-term: Senior technical leadership on the international expansion track, contributing both technical depth and cross-market perspective.

Korean opening: "입사 첫 해는 팀의 기존 코드베이스를 철저히 이해하고 주어진 업무에서 신뢰를 쌓는 것에 집중하겠습니다." (In the first year after joining, I will focus on thoroughly understanding the team's existing codebase and building trust through reliable delivery on assigned work.)

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Closing thoughts

The format gap between what foreign applicants submit and what Korean companies expect is the most common and most fixable rejection cause. The 자기소개서 has a specific structure, a required register, and section-specific conventions that Korean HR has internalized through hundreds of applications per cycle. Once you understand the format, the question becomes: is your content specific enough, and is your Korean formal enough?

Use the Seoulstart Korean Resume tool to get the correct document structure. For content, use this guide's section-by-section framework. For language, engage a 자소서 첨삭 specialist before you submit any application to a Korean-language posting.

For the broader picture of working in Korea, see the working at a Korean company guide, the Korean job platforms guide, and the non-teaching jobs in Korea guide.

@misc{seoulstart-korean-jasoseomun-guide,
  author = {{Seoulstart Editorial Team}},
  title = {{How to Write a Korean Self-Introduction Letter (자기소개서) as a Foreign Applicant (2026)}},
  year = {2026},
  publisher = {Seoulstart},
  url = {https://seoulstart.com/guides/korean-jasoseomun-guide},
  note = {Last updated June 21, 2026}
}