Hello
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designer engineer

Glass hash symbol

I’m Himalay Singh, a UX/UI and product designer, and now an engineer too. I start with user research, not screens, and build with AI agents in a tested loop, not by vibe coding.

See the work

Years in design

5+

Clients

I’ve designed products for these teams.Some names you’ll know, some you will.

  • Their own research tool, designed from the user research up: mobile app, admin and super-admin, used worldwide.

  • Their whole website, designed and engineered end to end with AI agents, not vibe-coded.

  • An art-led mobile app for their digital canvas, designed for the owner’s journey after the purchase, not the buyer’s before it.

  • A games and video platform on mobile and OTT, designed to read the same in the hand and across the room, at any level of user.

  • A stock-management app for Indonesia. The entire thing, first screen to last, designed for a national user base rather than a specialist one.

  • Positioning a programmatic media group, then designing the tool that had to carry it.

  • Solar installation and the storefront that feeds it, designed as one system. Ordering panels and having them installed is one journey, not two.

  • Organisations building their own AI agents: a complete tool, customised to each one, so it is the people who know the work doing the building.

  • Their site, being upgraded now, designed and built in one pass, with Claude keeping the two from drifting apart.

Work

Four projects, shown in full.Chosen for the problem, not the polish.

OTT & Gaming AppiTAPGet paid to watch.500K+downloads2app storesUnder NDA · In developmentResearch App · AdminStanford UniversityOur Voice Discovery Tool, revamped.3productsGlobalusers
Peoples Capital Group home page on desktop
Peoples Capital Group home page on a phone
Website · Design & BuildPCG CapitalReal-estate investing, revamped.12pagesLivedesign + code
TokoSmart AI assistant, listening
World Bank Group · AppTokoSmartRun a warung from one phone.47screens~400participants

Designer by profileEngineer by practice

I design it. I vibe-code it. I engineer it.

Agent loops that plan, build and check, inside a harness of tests, evals and guardrails. Engineered, not improvised.

Himalay, sitting on a stool, smiling

I’m Himalay, a designer by profile who upskilled into engineering.

I used to hand over research and designs. Now I take a project all the way: PCG Capital is live, designed and engineered end to end by me, with AI as the edge.

Not vibe coding. I build agentic systems that work in sync with the latest AI tools: the loop that plans, acts and checks, the harness of tools, evals and guardrails around it, and I gatekeep what ships, from code review to security.

50+
clients, from Stanford to the World Bank
500K+
downloads on iTAP
47
screens designed in 4 weeks, TokoSmart
3
live products, in users’ hands
  • Claude
  • ChatGPT
  • Gemini
  • Grok
  • DeepSeek
  • Perplexity
  • Copilot
  • Cursor
  • Mistral
  • Meta AI
  • v0
  • Replit
  • Lovable

User research finds the real problem. Interface craft makes the answer obvious. I do both, in order.