Performance is a feature
From bundle budgets to response payload, I treat speed as user experience and engineering quality.
Spawn Point
I build fast, maintainable production systems
I am Khoa Do, a Senior Full-Stack Engineer with 14+ years of experience modernizing complex web platforms, respecting legacy constraints, and shipping reliable user experiences across frontend, backend, cloud, and AI-assisted workflows.
Mission briefing
Modernization, not demolition.
My strongest work happens inside real production constraints: old systems, active users, cross-region teams, business deadlines, and a need for technical progress that does not lose operational knowledge.
Respect the legacy
Old systems contain business knowledge. I modernize with care, migration paths, and production safety.
Own the platform path
Frontend, backend, CI/CD, cloud, internal libraries, and AI tooling are all part of the same delivery loop.
Inventory
Tools collected across the platform path.
The stack is broad because the work is broad: interfaces, APIs, databases, cloud deployment, CI/CD, internal libraries, and AI-assisted development loops.
Languagesslot
- JavaScript
- TypeScript
- HTML
- CSS
- Odin
Frontendslot
- React
- Vue
- Solid
- TanStack
- Next.js
- Astro
- Tailwind
- CSS Modules
Backendslot
- Node.js
- Fastify
- Express
- Hono
- Drizzle
- RPCs
- REST APIs
- Better-Auth
Data & Cloudslot
- PostgreSQL
- NeonDB
- Docker
- AWS
- Linode
- GitLab CI
- ArgoCD
AI-assistedslot
- Codex
- Pi
- Cursor
- Ollama
- AI SDK
Side quests
Personal products and applied experiments.
These projects are where I test ideas end-to-end: AI data extraction, full-stack dashboards, browser storage, and production-friendly interfaces.
AI analysis lab
EPD Comparison
An AI-powered platform that parses Environmental Product Declarations, extracts provenance-backed structured data, and compares products through an interactive interface.
- TypeScript
- Next.js
- Python
- Tailwind
- Shadcn UI
- LiteParse
- LlmParse
Finance control room
Cost Ctl
A full-stack expense management platform with schema design, Better-Auth flows, RPC APIs, dashboards, Chart.js visualization, and serverless deployment.
- SolidJS
- TanStack Start
- Nitro
- NeonDB
- Drizzle
- Chart.js
IndexedDB field map
Party Scout
An experimental project exploring local-first browser storage and monorepo workflow with IndexedDB, Nx, React, TanStack Router, and Drizzle ORM.
- React
- TanStack Router
- IndexedDB
- Nx
- Drizzle
Hidden labs
Research that keeps the craft sharp.
Lower-level experiments and AI systems help me understand the tools behind the tools, not just their APIs.
AI agent workshop
Chỉ Thuỷ
An AI coding agent built from scratch using LLM orchestration, workflow automation, tool execution, and a performance-oriented architecture.
- LLM orchestration
- Tool execution
- Workflow automation
Training chamber
Tiny Neural Network
A neural network built from scratch to recognize hand-written digits and trained with the MNIST dataset.
- Neural network
- MNIST
- From scratch
Parser forge
Odin-MPC
An Odin language binding to orangeduck/mpc, a micro parser combinator library written in C.
- Odin
- C
- Parser combinators
Final gate
Have a complex platform to modernize?
Let’s talk about performance, maintainability, migration paths, AI-assisted engineering workflows, or the next product system you need to ship.