##🚀 I build SaaS products where AI features feel native
I'm a Senior Full-Stack SaaS Engineer with 10+ years shipping production web and mobile software end-to-end: architecture, API design, performance, and the production debugging that happens after the launch post.
What I do
I specialize in the React, Next.js, NestJS, and React Native stack, with TypeScript across the board. The work I'm proudest of lives at the intersection of full-stack SaaS and on-device intelligence — most recently, an on-device computer vision pipeline in React Native using OpenCV and the New Architecture (Fabric + TurboModules). It captures physical objects under controlled lighting and extracts edge sharpness scores, shadow coverage, and bounding boxes that feed downstream authentication workflows. No cloud round-trip, no latency tax — native-grade performance on the device itself.
Where I've shipped
Relik (Dubai) — Architect and ship core marketplace features across React, NestJS, and React Native. Own the on-device CV pipeline end-to-end. • FedEx — Led an enterprise operations dashboard in Next.js + Auth0 SSO, plus a modular CMS in Next.js / shadcn-ui for multi-language content delivery into FedEx's PWA. Built a data integrator with a live query builder and a Sentry-based monitoring stack that cut mean-time-to-detect for production incidents. • iCareBetter (healthtech, Boston) — Led the technical team. Built location-aware doctor search in Next.js + TypeScript, a double-blinded peer video vetting workflow, and Stripe + EMR integrations covered by Cypress. • Earlier — Multi-chain crypto wallet (ETH, BTC, BSC) with Web3 signing flows, fintech ERP dashboards, and large-scale data visualization tools
How I work
Take a fuzzy business requirement. Design something that scales. Ship it with tests, monitoring, and a clean handoff. Repeat.
Stack
React · Next.js · NestJS · React Native (New Architecture) · TypeScript · Node.js · PostgreSQL · MongoDB · GraphQL · OpenCV · AWS · Auth0 · Stripe · Sentry · Cypress
Let's talk
I'm open to Senior / Staff Full-Stack roles at AI-forward SaaS companies — especially teams building products where on-device AI, computer vision, or native-feel mobile experiences are part of the roadmap.
📩 dan.salahii@gmail.com — or DM me here on LinkedIn.
