Hello, I'm Hasan Sarwer
Full-Stack Engineer with a PhD in Mathematics. I build web apps, mobile apps, AI/data workflows, and interactive learning products — from architecture to deployment.
Core specialties across engineering, data, and product development.
React, Next.js, Node.js, Express, MongoDB, MySQL
React Native, Expo, cross-platform iOS & Android
Python, Pandas, scraping, data pipelines, ML models
Pixi.js, Three.js, Canvas, educational simulations
salt-theme-gen, OKLCH color science, npm packages
PhD Mathematics, numerical methods, algorithm design
Products and systems I've designed, built, and shipped.
119-component React Native UI library that responds to a single theme object. Pass one color and every component — buttons, inputs, modals, charts, data tables — adapts consistently across light and dark mode. No native linking, works in Expo Go.
Led development of a government-funded interactive digital learning platform delivering 1,000+ simulations for grades 6–10 across Bangladesh.
An open-source OKLCH-based theme generator that takes one hex color and produces a complete light/dark design system with 21 semantic colors, 32 interactive states, and WCAG accessibility reports.
Built the backend, data scraping pipeline, and geo-distance features for a travel guide platform connecting remote workers with destinations and workspaces.
Architected and built a comprehensive ecommerce ecosystem: 1 web platform + 4 dedicated mobile apps serving retailers, producers, agents, and consumers.
An AI-assisted mental health monitoring platform enabling daily symptom check-ins with risk scoring for clinical care teams supporting individuals with schizophrenia and related conditions.
Where I've built, led, and delivered.
Self-Employed · Dhaka
Building and maintaining open-source libraries (salt-theme-gen, react-native-salt) published on npm
Automind IT · Dhaka
Led development of interactive digital learning content for the Sheikh Russel Digital Lab, funded by the Ministry of ICT, Bangladesh
WorkingFromHammock · Netherlands (Remote)
Building the backend and data scraping pipeline for a travel guide platform connecting remote workers with destinations and workspaces
Technologies and tools I work with.
My PhD in Mathematics from South Asian University focused on high-accuracy numerical methods — the same deep analytical thinking I bring to engineering complex software systems. I've published peer-reviewed research and taught at university level, which strengthens my ability to break down hard problems, design algorithms, and communicate technical ideas clearly.
View Research →Whether you need a full-stack engineer, a data/AI solution, or a technical partner for your next product — I'd like to hear about it.