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HEYHICOMPANY

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Seoul, South Korea
At HeyHi Company, we design UX/UI that solves real business problems — not just screens that look good. Our process runs from user research and information architecture to wireframing, UI design, and developer handoff, with a separate planning (STEP 1) phase up front to reduce risk before design begins. We specialize in complex, high-stakes interfaces: B2B SaaS platforms, multi-tenant dashboards, and enterprise services. That depth comes from delivering for clients like CJ ENM and Deloitte, and it's why our work earned Korea's 2024 ICT Award Grand Prize (Minister's Award) and a 2025 GDWEB Gold. What you can expect: a research-backed rationale for every decision, clean Figma files ready for development, and a team that embeds with you from day one. With offices in Seoul and Bangkok, we work fluently with both Korean and international clients.
11 people in their team
Speaks English, Korean, Japanese
Sortlist member since 2026
Founded in 2020
2 awards conferred


Services

3 services offered by HEYHICOMPANY

Service name
Experience level

Related reviews
Starting from

  • Description
    HeyHi Company develops custom software and B2B SaaS platforms — multi-tenant architecture, CMS, enterprise web systems, payments, integrations, and analytics dashboards. We start with a planning-and-architecture phase to de-risk the build, then deliver scalable, maintainable products with design and engineering under one team. Trusted by CJ ENM and Deloitte, recognized with Korea's 2024 ICT Award Grand Prize and 2025 GDWEB Gold. Based in Seoul and Bangkok.
    Skills in Software Development (5)
    Software LocalizationSoftware ArchitectureSalesforce IntegrationC# (C-Sharp) DevelopmentC++ Development

    Learn more about Software Development


  • Description
    HeyHi Company builds iOS and Android apps end to end — UX/UI, prototyping, native and hybrid development, store publishing, and maintenance. We unite design and engineering in one team to ship faster with consistent quality, handling complex needs like payments, integrations, and analytics. Trusted by CJ ENM and Deloitte, recognized with Korea's 2024 ICT Award Grand Prize and 2025 GDWEB Gold. Based in Seoul and Bangkok.
    Skills in Mobile App (6)
    Android App DevelopmentMobile App DesigniOS App DevelopmentMobile App PublishingMobile PrototypingHybrid Mobile App

    Learn more about Mobile App


  • Description
    HeyHi Company designs UX/UI for complex, high-stakes products — B2B SaaS, multi-tenant dashboards, and enterprise platforms. Our process spans user research, information architecture, wireframing, UI design, and developer-ready Figma handoff, with an upfront planning phase to de-risk the build. Trusted by CJ ENM and Deloitte, recognized with Korea's 2024 ICT Award Grand Prize and 2025 GDWEB Gold. Based in Seoul and Bangkok.
    Skills in Ergonomy (UX/UI) (5)
    Usability TestingErgonomy (UX/UI)UI DesignFigmaWireframing
    Review in Ergonomy (UX/UI) (1)
    EK

    Learn more about Ergonomy (UX/UI)

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Team

11 members in HEYHICOMPANY's team

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Awards

HEYHICOMPANY was awarded 2 times

Good Design (GD) Award2023-02-01DESIGN
2024 ICT AWARD GRAND PRIX2024-08-01ICT AWARD

Reviews

1 review for HEYHICOMPANY

5/5
(1 reviews)
EK
EKSenior Manager at ChillintheCinema
ServiceErgonomy (UX/UI)
SectorMarketing & Advertising
Team11 - 50
5/5
Budget
Quality
Schedule
Collaboration

What was the objective behind your collaboration?We partnered with the agency to redesign our corporate digital presence and establish a world-class website that meets international standards while maintaining our Korean brand identity. The objective was to create a platform that resonates with both domestic Korean clients and global markets across Asia-Pacific and beyond.

What did you enjoy the most during your collaboration?Exceptional professionalism and strategic thinking. The team demonstrated deep understanding of UX/UI best practices across different markets (Korean, Japanese, Southeast Asian standards). What impressed us most was their ability to balance aesthetic excellence with conversion optimization, and their proactive approach to cross-cultural design considerations. The communication was transparent, timely, and they consistently delivered beyond expectations.

Are there any areas for improvements?Minor point: Given the complexity of multi-regional deployment, slightly more upfront documentation on localization roadmap would have been helpful. That said, they were very responsive when we raised this mid-project. No significant areas for improvement—they're already operating at a world-class level.

EK recommends this agency


ServiceErgonomy (UX/UI)
SectorMarketing & Advertising
Team11 - 50
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Contact

Contact details of HEYHICOMPANY

Details


  • Headquarter100 Eulji-ro, Jung District, Seoul, South Korea

  • S Metro Building, 725 Sukhumvit Rd, Khlong Tan Nuea, Watthana, Bangkok, Thailand