01 / LIVE / PRODUCTION PRODUCT
Dfriend
A production EdTech platform with dedicated student and teacher experiences, class management, metrics, exercise uploads, AI analysis and streamed progress updates.
Click card to inspect Visit live product
CURRENTLY SHIPPING
Full-stack Developer Intern | Web, Mobile & AI Systems
Building maintainable web systems & responsive interfaces.
Full-stack developer intern working across web, mobile and AI-assisted workflows—turning dense requirements into secure, clear and dependable products.
FocusWeb + mobile systems
ModeProduct-minded
SignalSecurity + clarity
identity.card LIVE
portrait / tuan kietTuấn Kiệt Đỗ LêWeb / mobile / AI systemsBased in Vietnam · Open to internship opportunities
focusWeb + mobile
modeProduct-minded
signalSecure systems
currently_shipping
> dfriend / production edtech
> medicare / mobile health system
> coding agent / repository RAG + controlled tools
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working_style
> product flows / service boundaries / controlled AI
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availability
> based in Vietnam / open to internship opportunities
// 01. SELECTED WORK
Featured systems, explained without the fluff.
A case-study-first view of the decisions behind the interface.
02 / IN DEVELOPMENT / FAMILY HEALTH PRODUCT
MediCare
A family health product combining multi-family access, medication, vaccination, appointments, real-time chat and controlled AI/OCR workflows in one mobile experience.
Click card to inspect Private / details on request
03 / PRIVATE / AGENTIC CODING
Agentic Coding Agent
A dependency-light AI coding agent that turns a repository task into a bounded, evidence-grounded workflow with structured decisions, controlled tools and final reporting.
Click card to inspect Private / details on request
04 / DEPLOYED DEMO / FINANCIAL MANAGEMENT
SmartSaving
A deployed web platform for managing savings books, deposits, withdrawals, interest rules, reports and role-based account access.
Click card to inspect Open deployed demo
// 02. SKILLS & ARSENAL
Tools I use to move a system forward.
Click a skill to trace where it appears in the featured work. Click it again to clear the signal.
01.
Languages
02.
Product UI
03.
API & Services
04.
Data & Delivery
Technologies used in this portfolio
Next.jsReactTypeScriptFramer MotionCustom CSSLucide ReactSimple Icons
// 03. OPERATING PRINCIPLES
Good engineering should feel calm.
Less ceremony. More signal. Better decisions in the code and in the product.
01 / principle
Clarity over noise
Every surface has a job: explain the work, show the thinking or move the next action forward.
Applied in Dfriend → separate student / teacher surfaces.
02 / principle
Systems that scale
Clear service boundaries, asynchronous work and typed interfaces keep complex workflows understandable as they grow.
Applied in Dfriend → asynchronous exercise-processing pipeline.
03 / principle
Proof, not promises
The portfolio treats performance, architecture and shipped details as evidence—not decoration.
Applied in SmartSaving → complete deployed demo workflow.
// 04. CONTACT
Open to internship opportunities.
A direct channel for product work that benefits from clearer systems and dependable execution.
I'm open to internship opportunities and product engineering conversations across web, mobile and AI-assisted systems. If the work is a fit, send a note and I'll bring the first useful question.
doletuankiet06@gmail.com