This blog post compiles sample career history sections for self-introduction letters tailored to management, administration, planning, and accounting roles, organized for easy reference.

An HR Intern Who Prepared and Gained Experience Early

There’s a saying: “If you have something you want to do, spread the word.” I took this to heart during my university years, consistently telling friends and seniors that I was very interested in HR team work. Because if you spread the word, someone will hear it, and among them, someone who can help might appear. This saying proved exactly right for me. While internship recruitment sessions are common, finding one specific to a particular role was challenging. Then, through a senior at my university, I heard about the HR team internship opening. Seeing it as a golden opportunity to experience my desired role in advance, I applied without hesitation. It happened to be right before my final semester, and I secured the chance to work as an intern in the HR department of a business hotel located in central Seoul.
During my internship, I gained broad exposure to fundamental HRM tasks: translating internal procedures between Korean and English, managing HR databases, handling student financial aid, and assisting with part-time staff recruitment. Crucially, experiencing the real workplace atmosphere provided invaluable insights into professional life – something campus activities or theoretical studies could never offer. I was deeply impressed by how the HR team systematically managed and digitized a far greater volume of information than I had anticipated to measure and manage employees’ work capabilities. I witnessed firsthand the crucial role the HR team plays in meticulously assessing each employee’s competencies, using this as a foundation to elevate work performance and enhance human resource productivity.
This experience greatly broadened my understanding of HR work and simultaneously provided strong motivation to build expertise in this field. It was a precious time that instilled confidence, allowing me to concretely envision my future career path beyond just having an ‘interest’. Looking back, this internship wouldn’t have happened without the process of sharing my aspirations with others and actively attracting opportunities. For me, the HR internship experience was not just a line on my resume, but a definite first step toward my future.

Building on the accounting office skills I gained during my one-year stint

after graduating from the Tax Accounting Department, I immediately joined an accountant’s office to apply my knowledge in practice and worked there for a year. Previously, I had only encountered the material in textbooks and lectures, so applying it to actual work was somewhat challenging at first. However, my strong desire to learn, coupled with meticulously taking notes and mastering each task step by step, allowed me to adapt quickly. I often received praise from seniors for my “rapid learning speed,” which significantly boosted my confidence.
My responsibilities at the accounting firm were diverse, covering the four major insurances, year-end tax settlements, tax adjustments, income tax filings, and value-added tax (VAT) tasks. While many around me expressed concern that such a heavy workload might be too much for a first-year employee, my seniors trusted my diligence and meticulous nature and boldly assigned me these tasks. My strong proficiency in office programs like Hangul, Excel, and PowerPoint also earned high praise for document organization and data preparation, proving to be a significant strength in my practical work.
Building on this experience and background, I aim to become a reliable employee who flawlessly handles tax duties at this company. The most critical aspect of corporate operations is managing funds and cash flow. I am confident I can perform assigned tasks responsibly and become a trustworthy and dependable team member. I will continue to learn and grow steadily to contribute to the company’s financial management.

Gaining Practical Experience as a Secretary

Secretarial work is an area with many variables depending on the actual situation. I believed that no matter how diligently one studies at a desk, that knowledge is nearly useless without on-the-ground experience. Therefore, I invested as much time as possible in increasing my practical experience. During this process, as part of my field training, I gained the opportunity to work for six months in the association’s public relations office, handling tasks ranging from general administrative support to simple promotional assistance.
Initially, I started by faithfully completing tasks assigned by staff members. Soon, however, I began identifying the daily interests of key personnel, scraping relevant news articles, and delivering them. Those who initially questioned, “Is this really necessary?” began, at some point, drawing ideas from the articles I compiled to guide meetings or requesting additional research on needed materials. Though seemingly minor tasks, my thorough preparation earned recognition within the team. Furthermore, I systematized office procedures by creating manuals, ensuring any successor could seamlessly take over my responsibilities. I heard that no previous assistant had ever voluntarily prepared such documentation.
Through this experience, I gained concrete insight into the specific competencies required for secretarial work, which I had previously only encountered through books and lectures. It was also a time to learn firsthand how to interact with seniors, colleagues, and superiors in their respective positions, and what attitude to adopt depending on the situation. Furthermore, while supporting tasks in other departments several times during my tenure, I deeply understood the importance of communication methods and collaboration between departments.
Looking back, these six months were not merely an internship but a valuable period that significantly developed my work attitude and professional acumen. This experience made me realize that the role of an assistant is not simply about following instructions, but about creating value even in small details and playing a crucial part in keeping the organization running smoothly.

A Growth Story Built on Perseverance and Diligence

I handled the consultation desk and accounting duties at a language institute, later moving to the planning department where I managed financial accounting tasks. The institute specialized in elementary and middle school students, where daily conversations often happened in English, and many native-speaking instructors worked there. Thinking, ‘Someone working at a language institute mustn’t lack English skills,’ I began studying English in earnest. My schedule was grueling, running from 11 AM to 10 PM including overtime, leaving me physically exhausted by the end of each day. Yet I persevered with my studies. Overcoming difficult circumstances when necessary was my strength.
Later, I was assigned to the planning department to handle financial accounting duties. Frequent field work meant numerous expense reports, and ledger management was complex, but I never lost my meticulousness. This diligence and accuracy were highly valued, leading to my assignment as a new employee trainer starting in my second year. With a deep sense of consideration and respect for others, I wholeheartedly fulfilled my role in helping new hires quickly adapt to company life. This naturally fostered strong bonds with the new employees, significantly contributing to a vibrant office atmosphere. Furthermore, this positive environment became a solid foundation for enhancing the entire team’s work performance.
Looking back, I am someone who has cultivated the necessary skills independently even in new environments and responsibly resolved complex work situations. The experience and relationships built during this process have strengthened my growth. Moving forward, I will continue to give my best within any given environment and strive relentlessly to achieve better results.

Gaining Experience in Overall Management at the Industrial Planning Department

While working at the Industrial Planning Department, I was responsible for overseeing overall management. The documents I had to process each day piled up like mountains, and within that, I experienced firsthand the fast-paced flow of the organization. Early in my career, my work consisted solely of simple tasks like typing and inputting provided materials. At first, the repetitive work felt tedious, but ironically, it significantly improved my typing speed in English, Chinese characters, and Korean. I believe every task has its pros and cons. My attitude of finding and maximizing the strengths in even simple tasks ultimately drove my growth.
Over time, I took on management control duties in the planning department, primarily focusing on accounting and finance. Beyond document processing, handling bookkeeping tasks directly allowed me to gain practical experience applicable right on the job. During this process, I became proficient in various computer programs, including Excel, significantly boosting my work speed and accuracy. My quick hands and data processing skills soon became a driving force for improving work efficiency, establishing themselves as a key competitive advantage.
Thus, my experience in the Industrial Planning Office went beyond simply performing duties; it cultivated an attitude where I could learn and grow even from small tasks. Moving forward, I will actively embrace any task given to me in any environment and grow into a talent who creates my own value within it.

An Internship Experience That Solidified My Foundations

During my senior year summer break, I participated in a corporate internship program. It was a three-month program where two outstanding interns, selected through performance evaluations, would be offered an additional three-month extension. For me, it was an unmissable opportunity to potentially gain six months of experience at a major corporation.
I was assigned to the HR team, and my first task was surprisingly simple: ‘copying’. I had to copy training materials to be distributed to all employees according to the number of staff per department and deliver them to each department. The problem was, there was no one to tell me which department was on which floor. I was given the task, and figuring out how to accomplish it was entirely up to me. I first printed out floor plans showing department locations and staff numbers. Using this, I sorted and distributed the materials. Memorizing department locations was challenging at first, but I reasoned that quickly grasping the layout would greatly benefit my work in HR. This proved correct; later, when delivering materials or handling requests for other departments, I could respond immediately. Thanks to this, I even received praise from seniors for my efficient work.
During my internship, I learned that work in the professional world isn’t like school, where someone teaches you step by step. Instead, you’re given tasks and expected to solve them independently. I also realized that when asking questions to seniors, instead of asking about everything, I should ask questions that get to the heart of the matter. Furthermore, I learned quickly and was perceptive, accurately understanding seniors’ requirements. I mastered creating clean and visually appealing documents, phone etiquette, email writing techniques, and smooth communication methods with clients.
Recognized for this diligent attitude and work ability, I was selected for an additional 3-month internship, successfully completing a total of 6 months. This experience solidified my foundational skills for professional life. Should I join the company, I am confident in my ability to perform concise and accurate document work as an administrative assistant, as well as demonstrate effective teamwork with senior colleagues.

From the Lab to the Management Support Team: A Record of Growth

During my university years, I gained valuable experience working part-time in my professor’s research lab. I handled administrative support tasks related to research projects the professor was preparing and learned essential knowledge and know-how from several senior colleagues. As the youngest member of the lab, I gave my best effort to every assigned role based on diligence, which earned me positive evaluations from my seniors. This experience went beyond simple part-time work; it was a valuable time that taught me the importance of collaboration and the right attitude toward work.
Later, I broadened my scope by working in the Management Support Team at an educational institution. My duties included promoting educational programs, advancing contracts, and supporting tasks related to students in actual lecture settings. Within the Management Support Team, I handled various administrative and operational tasks. This process deepened my understanding of overall academy operations and enhanced my management support skills. While juggling multiple tasks simultaneously was sometimes challenging, the sheer volume of learning made every day an opportunity for growth. Notably, in my second year, I successfully led a project by forming and managing a dedicated task force team. This experience significantly strengthened my leadership and problem-solving skills, and I deeply felt the fulfillment of achieving results through collaboration with colleagues.
My practical experience, which began in the professor’s research lab, led to diverse challenges and achievements within the management support team. The experience and lessons gained in both places cultivated solid work capabilities and a strong sense of responsibility in me. I will continue to strive for the best results based on this foundation.

Working as an accountant at an insurance company and a law firm

My first job was at a relatively large insurance company. While handling accounting duties there, I learned two crucial lessons: relationships with people are paramount, and accurate task execution is essential. The company employed many older individuals, and most were salespeople with strong, distinct personalities. To smoothly coordinate opinions and support their work, I needed a gentle disposition and meticulous consideration. I frequently socialized with them, willingly accommodating small requests, and gradually learned the job. As time passed and I became more familiar, we built mutual trust and deep affection.
Furthermore, given the nature of accounting work involving money management, I understood that handling tasks accurately and without error was critically important. This experience proved invaluable when I later moved to a law firm. While the insurance company kept me constantly busy handling multiple people’s tasks simultaneously, the law firm had a relatively lighter workload. Instead, I was responsible for various tax and accounting-related tasks, which demanded even greater precision and meticulousness. To enhance my expertise in taxes and tax laws, I attended relevant seminars, learning more systematic and professional methods for handling these duties.
As my experience grew, I was tasked with organizing the work regulations and procedures for the accounting and finance department, which managed the company’s overall income and expenses. In this process, I systematically organized internal company documents and even handled new employee training, thereby improving work efficiency. The experience gained at the insurance company and law firm allowed me to grow beyond the role of an accountant, developing skills in interpersonal relationships, accuracy and professionalism, and organizational management. Looking back now, I realize those times became a solid foundation for my career and life.

Management Support and Organizational Management Experience

After graduating from university, I worked as a contract employee at a heavy industry company for two years. At that time, as an administrative assistant in the MHS PM department, I gained experience in various business-related tasks. Specifically, while working in the department handling paid and unpaid defect work for domestic thermal and nuclear power plants, I managed the entire scope of practical tasks. This included budget management and deadline control for paid defect work, supporting client operations, and ordering materials for paid service work at domestic power plants. Furthermore, as the headquarters expanded its business into overseas markets like India and Vietnam, I participated in supporting overseas paid defect work, gaining firsthand experience with the flow and procedures of international projects. Although my contract ended and I left the company, this period was a valuable time where I gained systematic work experience in an industrial setting.
Afterwards, I joined ○○ Networks Co., Ltd. as my second workplace and worked in the Management Strategy Team. There, I focused on internal organizational management and accounting/settlement tasks, handling detailed yet core management support duties including the four major insurances, payroll, personnel, labor relations, and general affairs. I also managed sales administration and support, internal welfare systems and regulations, document systematization, and financial management—covering the full spectrum of company operations.
Particularly, as it was a smaller company, I worked in an environment where the Management Strategy Team members collaborated closely without strict job boundaries, collectively handling all aspects of management oversight. This allowed me to gain hands-on experience across diverse tasks beyond any single specialty, rapidly developing practical skills and problem-solving abilities. This experience equipped me with the broad perspective and practical capabilities essential for management support and organizational management, laying a solid foundation for my future career.

My Growth Story: From Accounting and Bookkeeping to General Affairs

During high school, I studied accounting and office-related knowledge at a commercial high school. Around graduation, while I had dreams of attending university, my family’s financial situation at the time was not favorable. I decided to prioritize gaining practical experience by entering the workforce first. My first job was in the accounting department of a tax office handling tax settlements. Given the nature of a tax accountant’s office, I primarily handled basic tasks like voucher entry and management, and assisting with year-end settlements. As I gained more experience, I took on responsibilities like filing value-added tax returns and year-end tax settlements.
This period provided me with many learning opportunities. It wasn’t just about completing tasks; to perform them accurately, I inevitably had to deeply study relevant laws and procedures. Year-end tax settlements, in particular, required complex calculations and a thorough understanding of tax law, which naturally enhanced my knowledge not only in accounting but also across the entire spectrum of tax law. While it often felt challenging at the time, looking back, that entire process served as the foundation that elevated me to the next level.
Building on my two years of experience at the tax accountant’s office, I subsequently joined a subsidiary of a large conglomerate. This time, within the accounting department, I was responsible for managing the four major insurances, payroll management, cash handling, and invoice management. While the procedures were relatively simpler compared to accounting work, the emphasis on organizational management and administrative tasks was significantly higher. As I advanced in rank, I was promoted to Assistant Manager of the Accounting Department and eventually took charge of general affairs and human resources as well, significantly increasing my responsibilities. On one occasion, I was tasked with guiding employees on how to file withholding tax reports, then compiling and organizing the results they each processed for reporting. At that time, I keenly felt how challenging it was to give instructions and coordinate tasks, to the point where I thought, ‘Learning the job is much easier.’
Nevertheless, I strove to fulfill my assigned role diligently. With the mindset that “confidence and competence in one’s work create composure,” I spared no effort in studying and working harder. As a result, I grew into a deputy-level employee with broad practical skills spanning accounting, finance, general affairs, and human resources.
Looking back, my career has not been merely a succession of jobs, but a process where experiences and lessons accumulated at each stage built upon one another to shape who I am today. Moving forward, I intend to continue growing steadily, giving my best in every role, just as I did during those formative years.