Product Design & Development

Most digital products fail in the space between a promising brief and a shipped release — not because the idea was wrong, but because design decisions were made without evidence, engineering constraints were ignored in Figma, and the handoff was a ZIP file. We close that gap.

What does 'data-driven design' mean in practice?

It means no screen is drawn until we have signal: session recordings, drop-off funnels, support-ticket themes, or field interviews with real users in Bangkok, Jakarta, or Kuala Lumpur. Design choices — navigation depth, onboarding step count, LINE-based notification triggers — are argued from data, not opinion. When we revisit a decision post-launch, there is a record of why it was made.

How do you validate a product concept before engineering investment?

A two-week discovery sprint — stakeholder interviews, competitive audit, and a clickable Figma prototype tested with five to eight target users — surfaces the assumptions most likely to kill the product. We run these sprints before a single line of production code is committed, which typically saves four to twelve weeks of rework further down the timeline.

When should AI features be added — at launch or later?

Almost always later — but the data model and UX hooks need to be designed for it from day one. A search bar that will eventually become semantic search, a feed that will eventually be ranked by a recommendation model, a chatbot entry point that will eventually call an agentic workflow: these need anchor points in the architecture before launch, even if the AI layer activates in phase two. We design for that future state deliberately.

A design system that engineering can't consume is a mood board, not a product asset.

What we hand off to engineering

Handoff is where most agency-client relationships fall apart. We eliminate ambiguity by delivering a complete, living package that engineers, QA, and product managers can work from independently — without Slack clarification loops.

• Research plan and synthesis report — interview transcripts, affinity map, prioritised insight list
• Figma design system with bilingual (Thai–English) component variants and mobile-first breakpoints
• Design tokens exported as JSON — colour, typography, spacing, radius — ready for style-dictionary or direct CSS variable injection
• Component library in React or React Native with documented props, states, and slot patterns
• Interaction spec for LINE Mini App and deep-link flows — covering notification-triggered re-entry and KakaoTalk-style card message payloads where applicable
• Accessibility audit report — WCAG 2.1 AA pass/fail per component, with remediation notes for contrast ratios and touch-target sizing on budget Android devices
• Annotated prototype with edge-case flows — empty states, error handling, skeleton loading, and offline degradation

If you have a product brief, a legacy interface that needs a redesign, or an AI feature that needs a UX wrapper before it can go to users, talk to the HarmonyX product design team. We scope discovery workshops within a week and can be in the field with your users shortly after.