Muhammad Darwis A.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I'm a Full-Stack Developer with 6+ years building and maintaining SaaS systems for clients across Australia, Singapore, and US. Most recently, I've been working as a contractor for an Australian SaaS company — maintaining Node.js backend and Vue 3 frontend for a platform used by 500+ contractors across 3 markets (AU, CA, NZ). Before that, I spent 5 years at a Singapore-based startup where I led the migration of a legacy .NET MVC + jQuery platform to Vue.js 3 + .NET Core, cutting infrastructure costs by ~20–30% with zero downtime — and built a multi-tenant SaaS platform serving 15+ enterprise clients. What I'm good at: → SaaS platforms & multi-tenant architecture → API design, security & integrations → Legacy platform migrations → iOS/Android app backend & frontend integration → Working async with distributed teams (AU, SG, US timezones) If you're building or scaling a SaaS product and need someone who can hit the ground running, let's talk.