Built right.Period
We're specialists in each field, with more than ten years in the industry. Work with a team that turns your idea into a product.
A brainchild is an idea born in someone's head. BrainChild Works is where that idea starts to work.
Specialists who used to work together, now one team. We come from Korea's largest advertising agency, Web3 companies and a range of web agencies. We build products, and keep researching better ways to build them. And we cover all of it, from planning to design, development and infrastructure.
Services
- Product planning
- UI/UX design
- Front-end development
- Back-end development
- Mobile app development
- Payment integrations
- Web3 development
- Cloud infrastructure
Domains
- Commerce / Marketplaces
- Fintech / Payments
- Games / Entertainment
- Public / Education
- Ad tech
- Blockchain
Technologies
- Next.js / React
- TypeScript
- Vue / Nuxt
- Node.js / NestJS
- Spring Boot / Kotlin
- Rust / Go
- Solidity
- PostgreSQL / Redis
- Kafka
- AWS / Terraform / Docker
- React Native / Expo
- Figma / Framer
Experience
Products our team members worked on in their previous roles.
- 2025RWA platformPlanning, UI/UX design, Engineering, InfrastructureA platform linking token issuance, trading and settlement
- 2025P2P marketplaceUI/UX design, EngineeringEscrow trading with crypto and fiat payments
- 2022Identity verification for financeBack-endIdentity and account verification, KYC/AML
- 2021~2025Design systemsUI/UX designDesign systems shared across several products
- 2021Token swap and block explorerUI/UX design, Front-endReal-time trading screens and on-chain data lookup
- 2019Blockchain game portal and walletUI/UX design, EngineeringGame portal, wallet, payments and settlement
- 2018App rebrand and motionUI/UX designService rebrand, prototyping and motion design
- 2017Ad platformBack-endHigh-volume ad targeting and tracking
- 2017E-commerce back officeUI/UX designOne admin interface in place of many
- 2017Automotive campaign appUI/UX designBrand campaign app
- 2016Industrial operations systemUI/UX designOperations system interface for the shipbuilding industry
- 2015Pet record appUI/UX designAn app for keeping a pet's records
- 2012~2016Retail membership and kioskUI/UX designMembership app and in-store kiosk
- 2012~2016Securities mobile webUI/UX designMobile web for a securities firm
- 2012~2016Social and location-based appsUI/UX designA couples social app and a telecom geofencing service
- 2014, 2016Conference and exhibition appsUI/UX designOfficial apps for international events
- 2003~2011Culture and public sector appsUI designApps for cinema, film festivals, radio and public services
- 2003~2011Airline and consumer electronics appsUI designAn airline app and a TV promotional app
Studio
Projects and case studies in progress within the team.
How we work
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01
Proposal
Share your idea and we come back with a proposal: the direction, the stack and what to consider first.
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02
Design and build
We turn the plan into screen flows and a data structure, then design and build within the same team. We agree on a schedule first and show you progress on each agreed date.
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03
Handover
We hand over the deliverables, the domain and third party accounts, together with a handover document.