Own it to the end
We define our scope by outcomes, not code. Problems after launch are still our problems.
Company
Technology that opens the next chapter of your business
FULLSTACKHUB is a software company responsible for the entire product lifecycle, from planning and engineering to cloud operations.
We believe great software is finished in production, not at launch.
FULLSTACKHUB was founded on engineering experience earned in demanding environments: large messaging platforms, financial trading systems, and game servers where reliability and performance come first.
Alongside client work, we plan and operate our own products, including Smart Gongsi, xlLens, AnyDisplay, and BebeNote. Facing real users and real metrics every day is what raises the quality of the work we do for clients.
Why FULLSTACKHUBA hub that connects technology with business, and companies with their customers, joining every layer of the stack, from frontend to infrastructure, into one.
Mission
Solve hard technical problems so businesses can focus on the value they create.
Vision
Be the most trusted product engineering partner for anyone with an idea worth building.
Core values
How we work
Production-grade quality
Not just something that works in a demo, but systems that hold up under real traffic and failures.
Pragmatic choices
We recommend the most sensible approach for your goals, budget, and timeline, not the flashiest tech.
Candid communication
We share risks and limits early and work out solutions together.
Leadership
Leadership
DK
Donghwan Kim
CEO · Lead Engineer
Since 2009, Donghwan has spent more than 17 years designing systems and leading engineering teams across game servers, a global crypto exchange, fintech, healthcare AI, and enterprise ERP. After building large-scale services at LINE, NHN, and NEOWIZ, he now leads every FULLSTACKHUB project personally.
- Matching engine for LINE group's crypto exchange BITFRONT
- Large-scale game servers at NHN, NEOWIZ, and Barunson
- Technical director for a healthcare AI solution
- Enterprise ERP architecture and migration to EKS
Technology
Proven technology, chosen for the job
We pick tools for the requirements, not the hype. These are technologies we have run in production.
Client · App
TypeScriptReactNext.jsFlutterReact NativeElectronSwiftKotlin
Backend
Spring WebFluxKotlinNestJSNode.jsPythongRPCWebSocketWebRTC
Data
MySQLPostgreSQLMongoDBRedisKafkaElasticsearchSupabase
Cloud · DevOps
AWSKubernetes (EKS)ArgoCDHelmDockerGitHub ActionsFirebase
Company information
Company information
| Company name | FULLSTACKHUB |
|---|---|
| CEO | Donghwan Kim |
| Business registration no. | 846-08-03199 |
| Mail-order sales registration | 2024-Yongin-Giheung-6562 |
| Address | 1526 Bongyeong-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, Republic of Korea |
| support@fullstackhub.net |
Ready to build your next product?
Even an early idea is fine. Tell us your goals and situation, and we'll get back to you with a proposed direction.