Hi, I'm Subash K.C.
I build mobile apps
One engineer, the whole stack.
Mobile, web, backend, AI, payments, and the test discipline to ship them reliably — the range to take any product end to end.
Mobile — Flutter
Android, iOS, web & desktop from one codebase. 150+ production apps shipped.
Backend — Go & Node
Fast, tested APIs and real-time systems built to scale.
AI / LLM in Product
Shipped AI features in production — prompts, retrieval, on-device ML.
Web — Next.js & React
Modern, fast, SEO-grade web platforms that convert.
Payments & Fintech
Regulated-grade payment & banking integrations across borders.
Testing & CI/CD
Unit, widget, integration tests with coverage gates on every PR.
Products I've shipped.
Fintech at scale, quick-commerce logistics, government, healthcare, and AI — real products with real users.
Fasto
Groceries delivered in 10 minutes across Kathmandu Valley.
Mobile Banking Suite
150+ production fintech apps for microfinance institutions.
Social Security Fund
National contributor app for Nepal's Social Security Fund.
Habit Tracker (AI)
AI-generated habits and routines, shipped end to end.
Calculate Alpha
Stock-market platform with fundamental analysis.
Shipping from Kathmandu to the world.
Delivered products with teams in Nepal, the USA, and Japan — remote-first, timezone-tested, client-facing.
Notes on building.
Why Flutter Is Still the Best Choice in the AI Era?
Artificial Intelligence is changing how software is built, but users still expect fast, beautiful, and reliable applications. Discover why Flutter remains one of the best frameworks for building AI-powered apps across mobile, web, and desktop.
Why I Bet on Flutter + Go
One UI codebase for every platform, one fast and boring backend. The stack I reach for to take products from zero to scale.
Putting LLMs in Production Mobile Apps
Prompt design, an API proxy with caching and rate limits, and on-device personalization — how I shipped AI features that actually hold up.
Have a product to ship?
Whether it's a new app from scratch, a rescue mission, or a senior role on your team — let's talk about taking it from idea to scale.