Uses AI coding tools for task framing, repository context, implementation, review, and validation.
Mobile, Web, Backend, and Game development
Harry Nguyen.
Full stack developer for mobile, web, backend, and game systems. I graduated from Hanoi University of Science and Technology and work across Flutter, React, ASP.NET, Laravel, Node.js, Android, and Cocos.
- 0+ years
- professional software delivery
- 0 years
- Vibe Coding
- 0
- domains: mobile, web, backend, games
Delivered software for clients and teams in the United States, Japan, Hong Kong, and Vietnam.
Builds mobile, web, backend, operations, and game systems around real workflow requirements.
Reviews generated code against architecture, maintainability, tests, security, and user impact.
Vibe code
AI coding is part of my engineering workflow.
I have used AI-assisted coding since ChatGPT first became available, turning it into a repeatable delivery workflow instead of treating generated code as a black box.
Worked with AI coding tools from the early ChatGPT era
Started using AI coding workflows when ChatGPT emerged and kept testing new AI coding environments as they became practical for real software delivery.
- Hands-on with Cursor, Roo/Cline, Google Antigravity, Codex, and prompt-driven coding loops.
- Use AI for code exploration, scaffolding, refactoring, debugging, test planning, and documentation.
- Know when to let AI accelerate delivery and when to take manual control of design decisions.
Designed workflows for coding with AI, not just prompts
Build repeatable AI-assisted development systems around task decomposition, repository context, tool permissions, and validation so the output fits the project instead of drifting.
- Use Skills, MCP servers, and Codex plugins to give AI the right workflow and source-of-truth context.
- Break work into scoped tasks with acceptance criteria, validation commands, and rollback awareness.
- Keep human review on architecture, naming, data contracts, security, and user-facing behavior.
Control quality, architecture consistency, and scale risk
Treat AI-generated code as a draft that must pass engineering quality gates before it becomes part of the product.
- Check generated changes against existing architecture, module boundaries, and future maintainability.
- Validate with targeted tests, type checks, lint/build commands, browser QA, and regression review.
- Reject shallow code gen that creates hidden coupling, weak error handling, or unscalable shortcuts.
Work
Several completed projects.
I have delivered software for clients and teams across the United States, Japan, Hong Kong, and Vietnam, covering mobile, web, backend, and operations systems.
HuntRegs — US hunting regulations platform
Owned end-to-end delivery for a production Google Play product that supports the full hunting trip workflow: planning, legal regulation checks, field access, journal history, property context, weather, reporting, and premium member value.
- Large product surface covering season, zone, species, bag limit, possession limit, and location-based regulation lookup for US hunters.
- Built for real outdoor use with downloadable field data, saved journal entries, trip evidence, property notes, and weather context.
- High-value commercial scope with premium subscriptions, official store presence, and user trust tied to accuracy, availability, and field reliability.
Gaagal, Reach, EVN Book, DYO CANIFA, and Vertex
Built or supported mobile products including Gaagal, a management and booking app for hair salon chains in Japan; education alumni communication, EVN internal knowledge workflows; Vertex, a condominium and resident management app for an urban development; and DYO CANIFA, a T-shirt design app where users choose shirt blanks, draw artwork, add stickers, apply visual effects, and prepare designs for printing.
Android
Flutter
Laravel APIs
Salon booking
Salon management
Condo management
Resident app
T-shirt design
Print workflow
View App
Smart Management System — nursing-home network operations
Large-scale operations system for a nursing-home network, coordinating facility dashboards, resident records, care plans, staff instructions, assigned patient tasks, clinical logs, e-forms, calendars, reports, data migration, and audit history across homes, floors, rooms, and beds.
- Care planning covers nursing and medical instructions, rehabilitation therapy programs, and social or psychological training by resident, schedule, and time group.
- Task operations support routine and individual assignments, start and end dates, batch changes, exports, and daily tracking for each patient.
- Facility modules include anti-wandering floor maps, wound-care records, vital and body records, floor memos, professional logs, calendars, and administration tools.
Admin portal
Nursing-home network
Care plans
Patient tasks
Rehab therapy
E-forms
Anti-wandering maps
Scheduling
Reports
Public Library System
Public library management system for government-sector library operations, covering equipment administration, data synchronization, catalog operations, and book borrowing and return workflows.
- Managed library equipment status, operational settings, and administrative controls for public library branches.
- Supported data synchronization across library services so branch-side records and central system data stayed aligned.
- Handled book circulation workflows including borrowing, returning, tracking, and operational reporting.
React
Public library operations
Equipment management
Data synchronization
Borrow and return workflow
Administrative reporting
Confidential project
University Facility Booking System
Comprehensive web-based booking platform for Hong Kong Metropolitan University, helping students, staff, and student societies reserve and manage university facilities through a centralized system with role-based access, approval workflows, payment handling, and administrative reporting.
- Covered 14 facility modules including activity rooms, library and discussion rooms, VR rooms, PC labs, multi-purpose halls, communal areas, career advisory, meeting spaces, gallery zones, and digital display walls.
- Supported a standardized booking engine with real-time availability checks, configurable rules, blacklist controls, module-prefixed booking numbers, email notifications, and SignalR status updates.
- Handled enterprise workflows such as SAML SSO, LDAP admin access, multi-level approvals, payment processing, PDF receipts, audit logging, usage reports, and Excel exports.
ASP.NET Web Forms
Web API
C#
SQL Server
ADO.NET
jQuery
Bootstrap
DataTables
SAML SSO
LDAP
SignalR
Payments
Audit logs
Excel reports
Experience
Work history organized for fast review.
Full Stack Developer
Develop and manage software projects, support team members and stakeholders, and deliver web, mobile, and backend features.
- Primary technologies: ASP.NET, Flutter, React.
- Worked on outsourcing products spanning mobile, web, and backend delivery.
Full Stack Developer, Freelancer
Developed projects for Vietnamese and Japanese customers.
- Built backend APIs for Reach and related mobile applications.
- Delivered mobile application work for DYO CANIFA.
- Delivered mobile and backend work for client-facing outsourcing projects.
- Primary technologies: Node.js, Android, React, Laravel, MySQL, Elixir.
Mobile Developer, MDCGate
Created and managed mobile applications and server-side work, with responsibility for leading development activity.
- Built and maintained Android and Node.js systems.
- Led development team execution across mobile and backend tasks.
- Strengthened handoff between mobile clients and APIs.
Game Developer, Tamtay Global
Developed and maintained mobile games, game portal features, and supporting services for card, chess, and casual games.
- Worked with Cocos2d-js, JavaScript, Node.js, and backend game logic.
- Supported performance monitoring and team delivery.
- Built games that could be integrated into a shared portal.
Game Developer, Egame
Developed and maintained mobile games as part of a 10+ member team building a farming game similar to Hayday.
- Implemented game mechanics, UI, and gameplay features.
- Collaborated with artists and designers on mobile game delivery.
- Primary technologies: Cocos2d-x, Android Native, C++.
Next step
Send a task and review the workflow.
Share a small trial task, expected outcome, and any reference documents. I can turn it into a focused demo.