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What is Sejin Chun's Website?
Sejin Chun's Website is the personal portfolio and profile site of Sejin Chun, a Seoul-based high school teacher and software engineer. It is a compact, text-first site organized around three main sections: About, Portfolio, and Contact Me.
What the site covers
The About section presents a career that moves between industry and education. It lists his current role as a teacher at Seoul IT High School since 2015, following engineering work at SK planet on mobile platform and security products, LG CNS on surveillance and networking systems, and earlier game development roles. It also notes educational history and a 2019 national teacher invention competition award.
The Portfolio section names specific projects, including an Android malware scanning system, an anti-forgery solution, an intelligent CCTV control platform, and arcade and mobile game engines. Several entries include dates, employers, and awards, which makes the page useful as a chronological record rather than a marketing pitch.
Who it is for
- Recruiters and collaborators who want a concise engineering and teaching background in one place.
- Students and fellow teachers looking for examples of software projects built for or alongside school work.
- Researchers or developers checking project names, dates, and technical areas such as ZigBee, UHF RFID, or Android security.
How to use it
Start with the Portfolio section if you care about technical depth, then read About for context on how the industry roles connect to his current teaching work. The Contact Me section is the practical next step for any inquiry, since the site itself is a static profile with no signup, store, or pricing elements.
How can I view Sejin Chun's portfolio?
Open the Portfolio section from the top navigation menu on Sejin Chun's Website. The site is organized as About, Portfolio, and Contact Me, so the portfolio is a dedicated page rather than a downloadable file or an external profile.
What you will find there
The portfolio presents project work in reverse-chronological career blocks, which makes it easy to trace a single thread across employers:
- Education technology (2015–present): mobile apps and web applications for elementary, middle, and high schools, plus textbook writing for the 2022 revised curriculum.
- Platform security at SK planet (2012–2015): malware scanning for app registration, a customized Android emulator agent, an Android code-injection solution, a commercial big-data parsing server, and an anti-forgery solution.
- Surveillance and networking at LG CNS (2007–2012): a ZigBee stack and Intelli-VMS, a U-City CCTV control and intelligent surveillance system.
- Game development at Eolith and Ablex (2000–2004): arcade titles, cross-platform and mobile game engines.
A practical way to read it
If you are evaluating the work rather than browsing, skim for the role label attached to each entry — "Teacher," "Manager," "Research & Development Analyst," "Employee" — because the same person appears as an individual contributor, a team lead, and an educator at different points. A reader assessing fit for a security or embedded role should weight the SK planet and LG CNS sections; someone hiring for classroom software or curriculum should start with the teaching years and the textbook credit.
For anything beyond the listed projects, use the Contact Me page; the About section gives the email address if you want to ask about a specific system.
What software projects has Sejin Chun worked on?
Sejin Chun’s site presents a software career that moves from game engines to enterprise security and, more recently, school-focused educational tools. The portfolio page lists projects by employer, which makes it easiest to understand the range by grouping them by era and purpose.
Game and mobile engine work
At Eolith and Ablex, the listed work centers on game development and engine technology:
- Arcade games and engine development, including Fortress2 Blue and BnB
- A Japanese Foxbat arcade game engine
- A cross-platform game engine
- Mobile game engines for KTF BREW and SKT SKVM
- Online game development and maintenance for Destiny
This is the most graphics- and performance-oriented part of the portfolio. A reader interested in low-level engine work, platform portability or early Korean mobile gaming would find the most relevant material here.
Enterprise and security systems
At LG CNS and SK planet, the projects shift toward infrastructure, surveillance and mobile security:
- A USN ZigBee stack based on 802.15.4 MAC
- Intelli-VMS, a U-City CCTV integrated control and intelligent surveillance solution
- Auto Malware Scanning System (AMSS) for malware detection during T store app registration
- A customized Android emulator in-app agent
- An Android app custom code injection solution
- WISHPOCKET server, described as a commercial big-data parsing server
- AppGuard, an anti-forgery solution for Android apps
These projects suggest a practical focus on deployed systems: device networking, video monitoring, app-store security and Android protection. The site also notes awards and certifications connected to this work, including an LG R&D Award and TTA GS certification for Intelli-VMS.
Education and recent work
Since 2015, Chun has worked as a teacher at Seoul IT High School, and the portfolio lists mobile and web applications for elementary, middle and high schools. It also mentions writing a high school computer systems textbook for the 2022 revised curriculum and two named projects, Imagine and IntelliSquare. The page does not provide detailed descriptions of those two projects, so their exact scope is not clear from the available information.
For a quick next step, open the Portfolio section and read the entries in chronological order. If you are evaluating the security work, start with Intelli-VMS and AppGuard; if you are interested in education technology, look for the school app and textbook entries. The site itself is at Sejin Chun's Website.
What teaching resources or textbooks has Sejin Chun created for high school computer education?
Sejin Chun's site lists one named textbook contribution: High School Computer System General, described as a writing credit tied to the 2022 Revised Curriculum Textbook. That is the only teaching resource the page explicitly names, so anything beyond it should be treated as general context rather than a documented resource.
What the site documents
- Textbook authorship: High School Computer System General (2022 Revised Curriculum Textbook).
- Classroom-facing software: mobile apps and web applications intended for elementary, middle and high schools.
- Teaching role: teacher at Seoul IT High School since March 2015, in the Department of Network Security Solutions.
- Recognition: Minister of Trade, Industry and Energy Award at the 21st National Teacher Invention Competition (July 2019).
How the pieces fit together
The textbook is a curriculum-aligned resource for a specific course, while the apps and web applications are broader tools that could support lessons across school levels. The industry background — malware scanning, Android app security, CCTV and surveillance systems, game engines — suggests the resources lean toward systems, networking and security topics rather than general computing literacy.
For a teacher choosing materials, the useful distinction is between a textbook that maps to a national curriculum and software that supplements it. If your course follows the 2022 Revised Curriculum, the textbook is the more directly relevant item; if you need interactive practice or demonstrations, the school-level apps are the place to look. The site itself provides only brief descriptions, so check the portfolio section for the specific apps and their intended use before deciding whether they suit your class. You can also look at Sejin Chun's Website directly to see the current list.
How can I contact Sejin Chun?
The site lists one direct contact method: email. The address is shown as [email protected] on the page, which is a placeholder rather than a working address, so the safest route is to visit Sejin Chun's Website and read the address from the Contact section as rendered in your browser.
What to expect on the page
- A short About section with name, email, educational history and career timeline.
- Portfolio entries covering teaching, mobile and web applications for schools, and earlier engineering work.
- A Contact link in the top navigation, which is where the email address appears.
A practical approach
If you are a school, publisher or developer with a project enquiry, write a short email that states who you are, what you need, and any deadline. Mentioning a specific item from the portfolio — for example the curriculum textbook work or the school app projects — makes it easier for the recipient to judge relevance. Keep attachments small and use plain text where possible.
There is no contact form, phone number or social profile listed in the page evidence, so email is the only documented channel. If the placeholder address does not resolve, treat the site itself as the source of truth and check whether it has been updated.
What awards has Sejin Chun received for his work?
Sejin Chun's site lists two named awards, both tied to specific projects rather than general recognition.
- Minister of Trade, Industry and Energy Award at the 21st National Teacher Invention Competition (July 2019) — an invention award connected to his teaching work.
- LG R&D Award (March 7, 2012) — earned during his time at LG CNS, where he worked on Intelli-VMS, a U-City CCTV integrated control and intelligent surveillance solution.
- LG CNS R&D Award (January 4, 2010) — also from his LG CNS period, the same stretch that produced the TTA GS (Good Software) certification for Intelli-VMS in December 2010. Note that the certification is a product credential, not a personal award.
How to read the pattern
The awards cluster in two phases of his career: a corporate R&D phase at LG CNS, and a later education phase at Seoul IT High School. If you are evaluating him as a collaborator, teacher or speaker, the 2019 invention award is the most relevant signal for classroom-facing work, while the two LG awards speak to engineering delivery on government-linked surveillance and U-City projects.
A practical next step: open the Portfolio section of Sejin Chun's Website to see the projects behind each award, since the site lists dates and project names but not award citations or judging bodies.
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