Jang Dongjae
Co-CEO · Planning/Ops
Ran a video production studio and an event agency, and led the digital transformation team at a mid-size event agency. Rooted in video production and on-site event operations.
Company
An event-experienced development team asks different questions first.
Event-planning experience and engineering work as one team, so planners do not have to rewrite an event brief as technical specifications.
20
Completed projects · duplicates excluded
In-house build
Built directly by the two-person team
Design → delivery
Agreed scope, delivered directly
2025.08
Founded
WHAT WE DO
Nine Systems Built Around Event Operations
We design event website & registration, QR registration & check-in, booking & meetings, NFC badge networking, booth meeting lead records, kiosk & on-site content, live display wall, temp staff records, and contest operations around the event flow. Planners do not need to translate requirements into developer language. Full event operations are scoped separately.
Find a service →Event website & registration
QR registration & check-in
Activity & meeting booking
NFC badge networking
Quiz & experience kiosks
Live display wall
Temp staff records
Contest operations
Booth meeting lead records
Hotel event-service productization
Experience Records & Live Rankings
Experience products: Game-Based Stamp Tour Development for Festivals and Destinations
From Design to Delivery, Within the Agreed Scope
We build the core software directly. Installation and operational support follow the contracted scope.
1
Define
Start with the event goal, participant flow, and on-site conditions.
2
Design
Turn the required screens, data, and operator tools into a delivery scope.
3
Build Directly
The two-person team builds the agreed core software directly.
4
Test & Install
Test before delivery, then install equipment and train operators when included.
5
Operational Support
Provide event-day technical support when it is part of the contract.
01
Core Software Built Directly
The two-person team designs and develops the agreed core software for each event.
02
Speak in Event Terms
Planners can describe the participant flow and field conditions without translating them into developer terminology.
03
Scope Before Delivery
Installation, training, and on-site support are defined in the quote and contract.
Brand Story
Why ‘zzzarit’
It started when the AR service ‘kkkAR’ met IT.
ㅋㅋㅋkkkAR
zzzKO/EN key
zzzarit+ IT
짜릿reads as
Type ‘ㅋㅋㅋ’ with the Korean/English key toggled and it turns into ‘zzz’. Add IT and you get zzzarit — read aloud, ‘zzarit (짜릿).’ AR meets IT to spark the moment.
Vowels turned lightning
The logo is a lightning bolt drawn from the vowels ㅏ and ㅣ in ‘짜릿’ — the electric moment that wakes an event up.
Team
People who have built events work alongside people who have built software.
Lee Seungjun
Co-CEO · Engineering
A developer who ran his own software studio. Designs and builds the products and systems himself.
Timeline
What We've Done
Every event we ran and every solution we delivered — in one place.
Read press coverage of our projects →Upcoming Events
AK Plaza Hongdae · kiosk and gacha rental operations
ScheduledCGDC 2026 · official website
Scheduled
Events
2025
2025 Yonsei Research Expo
2025 Physician-Scientist Global Networking Symposium
2025 Medical Students Overseas Training Bootcamp Presentation
2026
2026 Yonsei Physician-Scientist Workshop
Ajou University Community-Based Medical Education Outcomes Symposium
Ajou University IPE Program 'Together in Care'
Ajou University IPE Program Outcomes Symposium
Yonsei University Digital Healthcare Bootcamp
Yonsei Medicine RISE: Bringing Education Innovation Outcomes Together
Yonsei Medicine Community-Based Clinical Practicum Review
Woori MOMOCON 2026 · mobile QR waiting system
Yonsei Medicine Career Fair · physician-scientist booth planning and operations
Deliveries
2025
CGDC 2025 Website
Promotional Video Production · Website IA
QR Access System
NFC Name Badge Solution
2026
QR Name Badge System
Five Elements Fortune Kiosk
Cafe Website & Search Optimization
EVENENT Website Renewal
K-ICT WEEK in BUSAN 2026 · AI fortune kiosk
KakaoPay UNBOXING DAY 2026 · check-in and booking queue system
Have an event in mind?
Share the date and scale — consultation is free.
Company Profile
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Company
- Company
- zzzarit Inc.
- Founded
- August 2025
- Co-CEOs
- Jang Dongjae · Lee Seungjun
- Business registration
- 694-86-04033
- Address
- S34,S35, 10F, 202-dong, 18 Bucheon-ro 198beon-gil, Wonmi-gu, Bucheon-si, Gyeonggi-do, Korea (Chunui Techno Park II)