Charles (Seong Jun) Ji
Web Programmer
Seoul,11
Summary
Software development professional with experience in developing and designing web applications using HTML, CSS, JavaScript, Angular, Node.js, and React. Adept at developing and deploying complex backend systems, web services and databases.
Tech-savvy Full Stack Web Developer proficient in fundamental front-end languages and server-side languages. In-depth knowledge of Oracle, MySQL and MongoDB. Analytical and precise professional with 3 years of hands-on experience taking charge of front and back-end web development. Skillful creating servers and databases for functionality and designing and developing APIs. Hardworking collaborator with track record of superior results.
Creative React Developer with 5 years of experience designing useful, approachable user interfaces. Knowledgeable on all aspects of Facebook's design best practices and emerging UI development techniques. Skilled at connecting exceptional assets with users via creative UI frameworks and careful user experience optimization.
Overview
2025
2025
years of professional experience
7
7
years of post-secondary education
3
3
Languages
Work History
Full Stack Web Developer
CCmedia Service Ltd.
3 2023 - Current
- Used Javascript, SQL and HTML to develop app-solutions.
- Increased website performance by optimizing front-end and back-end code for faster loading times.
- Applied responsive design principles to ensure consistent display and functionality across a wide range of devices, including mobile phones, tablets, and desktop computers.
- Created easy-to-use APIs for third-party integrations, enhancing the functionality of existing applications without compromising on performance or security.
- Developed customized content management systems tailored to specific client needs, enabling efficient content curation without sacrificing flexibility or ease-of-use for end users.
- Migrated legacy systems to modern technologies, resulting in improved system stability and reduced maintenance costs.
React Developer
Next Link Ltd.
12.2022 - 03.2023
- Reduced application load times by optimizing React components and utilizing code-splitting techniques.
- Modernized legacy applications through the implementation of React best practices and updated libraries.
- Spearheaded migration from class-based components to functional components, leveraging hooks for improved readability and maintainability.
- Maintained high-level expertise in React state management strategies.
- Mentored junior developers, providing guidance on React concepts and best practices for efficient project completion.
React Developer
N Solutions Ltd.
04.2022 - 11.2022
- React Front End 개발 및 Spring Mybatis Backend
- 연봉: 7,200 만원
- 주요직무: 웹개발자, React
- Enhanced user experience by implementing responsive web designs and optimizing application performance.
- Developed reusable components to facilitate faster development timelines and improve overall code quality.
- Maintained high-level expertise in React state management strategies.
- Mentored junior developers, providing guidance on React concepts and best practices for efficient project completion.
- Contributed to a positive UX through careful attention to design specifications and close collaboration with UI/UX designers.
Front End Developer
SQI Techs Ltd.
01.2022 - 03.2022
- Collaborated with back-end developers to improve website functionality and integrate new features.
- Utilized version control systems such as Git to track changes throughout the development process.
- Troubleshot technical issues related to front end development, ensuring prompt resolution to maintain project timelines.
Web Developer
Penta Creed Ltd.
01.2019 - 01.2022
- Enhanced user experience by implementing responsive web design and optimizing website performance.
- Provided front-end development support, creating visually appealing designs that aligned with brand standards.
- Collaborated with cross-functional teams to develop seamless integration of APIs, improving data flow within applications.
- Maintained high-level expertise in React state management strategies.
- Developed reusable components to facilitate faster development timelines and improve overall code quality.
Web Developer
Solar Techs Ltd.
01.2016 - 01.2019
- Coded websites using HTML, CSS, JavaScript, and jQuery languages.
- Planned website development, converting mockups into usable web presence with HTML, JavaScript, AJAX, and JSON coding.
- Provided front-end development support, creating visually appealing designs that aligned with brand standards.
Education
MBA - International Business Management (IT)
Edith Cowan University
Perth, Australia 05.2007 - 06.2009
CS50`s Web Programming with Python and JavaScript - Web Development
Harvard University Online
Massachusetts Hall, Cambridge, MA 02138, USA 02.2019 - 12.2019
Bachelor of Arts - Public Policy Analysis
Harbin Medical University
Harbin, China 05.2002 - 07.2006
Skills
Front-end Frameworks
Internshipsandexperience - Overseasexperience
- Australia, 2 years, MBA
- Singapore, 1 Year, Study
- China, 22 Years, Grow up there
- South Korea, 16 Yeas, Work
Certificationsandlanguages
TOEFL(iBT), 102, Chinese, Native, Korean, Native
Portfolio
- Certificate-1513729.pdf, https://www.jobkorea.co.kr/Text_User/File_Attach/File_Download.asp?idx=9130537
- Portfolio Website, https://glowingbutton.netlify.app/
Employmentpreferences
- Contractor, Freelancer, Web Developer, Full Stack Web Developer
- SI
- CRM
- ERP
Confirmation
위의 모든 기재사항은 사실과 다름없음을 확인합니다., 지성준
Landline
010-2583-5081
Personal Information
- Age: 41
- Date of Birth: 04/01/83
- Gender: Male
Timeline
React Developer
Next Link Ltd.
12.2022 - 03.2023
React Developer
N Solutions Ltd.
04.2022 - 11.2022
Front End Developer
SQI Techs Ltd.
01.2022 - 03.2022
CS50`s Web Programming with Python and JavaScript - Web Development
Harvard University Online
02.2019 - 12.2019
Web Developer
Penta Creed Ltd.
01.2019 - 01.2022
Web Developer
Solar Techs Ltd.
01.2016 - 01.2019
MBA - International Business Management (IT)
Edith Cowan University
05.2007 - 06.2009
Bachelor of Arts - Public Policy Analysis
Harbin Medical University
05.2002 - 07.2006
Full Stack Web Developer
CCmedia Service Ltd.
3 2023 - Current
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