I build web applications that solve real business problems. My focus is on creating reliable, scalable systems that teams can depend on.
From AI-powered document analysis platforms to construction workforce marketplaces, I've helped businesses across different industries streamline their operations.
I specialize in multi-tenant platforms, AI integration, and modern authentication systems using React, TypeScript, Hono.js, and Cloudflare Workers.
Real-world applications built for clients across different industries.
AI-powered legal document platform with mediation prep, deposition indexing, arbitration briefs, and medical chronology. Multi-tenant SaaS with WebAuthn passkey auth.
A modern platform built to streamline operations and connect stakeholders. Built with a focus on performance, clean architecture, and seamless user experience.
Premium portfolio for award-winning designer Mario Garcia. Showcases 250+ projects, $1B+ fundraises, and 7 exits including Nymbus ($329M Series C).
Property management platform for streamlining property management tasks across multiple tenants and locations.
Have a product idea or need a full-stack engineer? I'm available for new projects — from MVPs to scaling existing platforms.
Contributing to and building open source tools for the developer community. Follow along on GitHub.
Construction workforce marketplace — TaskRabbit for construction. Features project management, job matching, timesheet approval, payments, and real-time messaging.
Updates from active projects, shipped features, and technical milestones.
Writing on web development, DevOps, and software engineering.

My name is Samuel Bui. I build web applications that solve real business problems — from AI-powered legal document platforms to construction workforce marketplaces.
I specialize in multi-tenant SaaS platforms, AI workflow integration, and modern authentication systems. My preferred stack: React, TypeScript, Hono.js, and Cloudflare Workers.
I'm available for freelance projects and consulting. If you're building something and need a reliable full-stack engineer, let's talk.
A selection of projects I've shipped for clients and personal use.
AI-powered legal document platform with mediation prep, deposition indexing, arbitration briefs, medical chronology. Multi-tenant SaaS with WebAuthn auth.
Construction workforce marketplace (TaskRabbit for construction). Features project management, job matching, timesheet approval, payments, real-time messaging.
Premium portfolio for award-winning designer Mario Garcia. Showcases 250+ projects, $1B+ fundraises, 7 exits including Nymbus ($329M Series C).
Property management platform for streamlining property management tasks.
Services and technical expertise I bring to every project.
End-to-end web apps with React/TypeScript frontend and Hono.js or NestJS backend. From MVP to production.
Integrate OpenAI, Anthropic Claude, and Google Gemini into product workflows. Document analysis, chat, and AI pipelines.
Scalable SaaS platforms with org isolation, RBAC, and multi-tenant data models built on PostgreSQL.
WebAuthn passkeys, Better Auth, OAuth flows, and JWT-based API security. Modern auth from scratch.
RESTful and RPC-style APIs with Hono.js, OpenAPI spec, Drizzle ORM, and Cloudflare D1 or PostgreSQL.
Deploy to Cloudflare Workers and Pages for sub-50ms global response times. Wrangler, KV, R2, D1.
and more
Modern frontend with TanStack Router, TanStack Query, Tailwind CSS v4, and shadcn/ui components.
Backend APIs on Cloudflare Workers (Hono), Node.js (NestJS), or no-code with Xano for rapid prototyping.
I'm available for freelance projects and consulting engagements. Whether you need an MVP or help scaling an existing platform, let's talk.
Not ready to start a project? Connect on LinkedIn or check out my GitHub.
What type of projects do you take on?
I specialize in full-stack web applications — particularly multi-tenant SaaS platforms, AI-integrated workflows, and marketplace products. I've worked across legal tech, construction, design portfolios, and property management. If you have a complex product problem, I'm interested.
What's your preferred tech stack?
Frontend: React with TypeScript, TanStack Router, TanStack Query, and Tailwind CSS. Backend: Hono.js on Cloudflare Workers, or NestJS/Xano for more complex requirements. Databases: PostgreSQL, Supabase, Cloudflare D1, and SQLite.
Do you work with non-technical founders?
Yes. I've helped non-technical founders go from an idea to a working product. I can advise on architecture, help you avoid costly early decisions, and build iteratively based on real user feedback.
Can you integrate AI into an existing product?
Absolutely. I've built document analysis pipelines using OpenAI and Anthropic Claude, implemented vector search, and connected AI workflows to real-time product features. I focus on practical AI integrations that solve real problems, not demos.
What's your availability?
I'm currently available for new projects. Book a discovery call via cal.com/sam-t8csnr to discuss your timeline and requirements.
How do we get started?
Book a 30-minute discovery call. We'll discuss your project, timeline, and whether we're a good fit. From there I'll send a proposal with scope and pricing. You can also reach out directly: duong.buinhat1809@gmail.com