BUILDING SYSTEMS
FOR REAL BUSINESS
WORKFLOWS.
Full Stack Developer focused on building practical web applications, internal systems, BigQuery data gateways, offline-first mobile apps, and automated workflows that seamlessly connect business operations with modern technology.
Abstracting enterprise data warehouses with filter-driven role-based portals.
Handheld field survey app with local SQLite storage & automatic sync.
4-year supervisory track record leading English-speaking surveyor crews for AEON Mall.
ENGINEERING BEYOND
GENERIC CRUD DEMOS.
I build software around real operational hurdles—whether that means bridging SaaS surveys with geospatial mapping, automating international scraping queues via Teams webhooks, creating offline handheld apps, or leading on-the-ground surveyor crews.
Full-Stack Systems & Business Logic
My work centers on designing applications that solve tangible organizational problems. From dynamic e-commerce pricing engines with automated invoice generation to secure BigQuery download gateways, I bridge frontend interactivity with resilient backend architectures.
AEON Mall Survey Supervisor
Supervised English-speaking field surveyor teams during prime retail customer research engagements across four consecutive years (2022, 2023, 2024, 2025), ensuring data quota compliance and team execution.
Offline-First Mobile
React Native Android applications engineered for zero-signal venues with encrypted SQLite storage and automatic backend synchronization.
Data Warehouse Gateways
Internal portals providing controlled role-based access to BigQuery exports, abstracting SQL pipelines from business operators.
Cross-Border Webhooks
Connecting international stakeholders (Japan) with technical teams (Indonesia) through structured request ingestion and MS Teams bots.
AI & NLP Automation
Operationalizing machine learning inference models into web UIs for automated 4-tier document taxonomy categorization.
ACTIVITIES & ACHIEVEMENTS.
A chronological roadmap encompassing 4 consecutive years as AEON Mall Survey Supervisor, alongside foundational software engineering launches and business system milestones.
Supervisor — Vietnam English Speaker Surveyors
Supervised a multilingual team of English-speaking survey specialists conducting strategic customer research and venue satisfaction analytics.
Key Responsibilities & Deliverables:
- Coordinated multilingual field surveyors ensuring strict compliance with survey protocols
- Managed daily interview quotas, quota distributions, and participant verification
- Performed rapid field spot-checks and daily data validation reconciliations
- Served as the central operational liaison between survey field teams and project management
Supervisor — Vietnam English Speaker Surveyors
Directed surveying crews during prime retail season, overseeing real-time data collection and operational problem-solving.
Launch: Maps Question & Internal Scraping Platforms
Engineered and launched 3 mission-critical business systems: Zoho Maps POI bridge, BigQuery data downloader, and cross-border Teams scraping dispatch hub.
Key Responsibilities & Deliverables:
- Constructed the Maps Question Website bridging Zoho surveys with POI coordinate pin-pointing
- Built the Location Tech Downloader providing secured filter-based BigQuery dataset extraction
- Engineered the Microsoft Teams Webhook Scrape Hub for automated international task dispatch
Supervisor — Vietnam English Speaker Surveyors
Supervised specialized surveyor teams executing intensive demographic and customer preference evaluations.
Launch: Location Tech Commercial Pricing Engine
Architected and deployed an automated enterprise pricing estimator and checkout flow for location datasets.
Supervisor — Vietnam English Speaker Surveyors
Led the inaugural international surveyor team for the flagship AEON Mall consumer research project.
Deployment: Offline Survey App & AI Classifier
Engineered an offline-first React Native Android survey application and an AI-assisted text classification web portal.
SELECTED PROJECTS & ARCHITECTURES.
Real-world systems engineered for actual business operations, from high-precision location dataset pricing engines to offline Android mobile applications.
Location Tech Landing & Pricing Platform
Dynamic enterprise pricing calculator & automated checkout for location datasets
Enterprise prospective clients needed transparent, instant pricing quotes for complex location data without back-and-forth manual estimations across geographic regions, industry classifications, and store chains.
Engineered an interactive product catalog and multi-tier pricing calculation engine with automated order processing, invoice generation, and third-party payment gateway integration.
Geospatial Survey & POI Mapping Bridge
Bridging corporate survey workflows with interactive POI and home location mapping
Standard Zoho Survey forms lacked native map-picker and geospatial POI capture capabilities, preventing researchers from collecting accurate home coordinate data from respondents.
Developed a custom standalone mapping web application that receives authenticated survey session state, provides a fluid map interface for POI pin-pointing, and synchronizes geospatial coordinates back into the survey repository.
Location Tech Internal Data Downloader
Secure, role-based export interface abstracting enterprise data warehouses
Operational teams and non-technical stakeholders needed direct access to specific slices of location data without querying BigQuery directly or risking unmonitored warehouse execution costs.
Built a secure internal portal that abstracts complex BigQuery SQL pipelines behind an intuitive filter interface, enforcing query rate-limiting, role-based permissions, and asynchronous batch file generation.
AI-Powered Text Classification Platform
Operationalizing machine learning classification APIs into an intuitive business tool
Internal analysts manually categorized tens of thousands of customer feedback entries and product opinion lines, creating severe operational bottlenecks and human labeling inconsistencies.
Created a full-stack automation platform connecting machine learning classification models to a frictionless web UI, allowing analysts to upload tabular documents, select target columns, and batch-classify thousands of records instantly.
Offline-First Field Survey Mobile App
Resilient handheld survey data collection with automatic bidirectional synchronization
Field surveyors conducted research in underground mall sections, remote regions, and low-connectivity venues where web-based forms crashed or lost unsubmitted survey responses.
Engineered an offline-first Android mobile application that stores all survey questionnaires, response validations, and respondent media locally on the handheld device, automatically syncing to the centralized database once connectivity resumes.
Cross-Border Scraping Dispatch & Notification Hub
Centralized scraping task management with Microsoft Teams webhook orchestration
Scraping tasks requested by overseas teams were fragmented across emails and chat messages, leading to missed URLs, unclear requirements, and untracked deliverable delivery statuses.
Designed and deployed a centralized request queue system with structured input schemas, automated Microsoft Teams webhook notifications, task status lifecycle management, and secure result repository.
ENGINEERING STACK & CAPABILITIES.
Technologies and leadership proficiencies backed by production experience in real business architectures and multi-year field operations.
Frontend & Web Engineering
4 CapabilitiesBuilding responsive, modern, high-performance user interfaces and web applications.
Component architecture, App Router, SSR/SSG, hooks, state management.
Modern ES6+, strong type safety, asynchronous patterns, DOM manipulation.
Responsive layouts, custom design systems, CSS grid, micro-interactions.
Geospatial coordinate pickers, POI selection, interactive map APIs.
Backend & Systems Integration
4 CapabilitiesDeveloping robust server-side APIs, request dispatch systems, and service integrations.
MVC architecture, custom business logic, secure session handling, routing.
API design, asynchronous request processing, third-party webhook integrations.
Microsoft Teams webhooks, automated alert dispatching, event routing.
E-commerce checkout flows, automated invoice generation, payment confirmation.
Data Warehousing & Automation
4 CapabilitiesExtracting, transforming, and automating data pipelines and AI classification workflows.
Relational modeling, indexing, complex joins, transaction integrity.
Query execution, secure abstraction portals, high-volume data export.
Targeted web scraping, DOM parsing, structured data extraction pipelines.
Integrating ML inference APIs for automated 4-tier document classification.
Mobile & Offline-First Engineering
2 CapabilitiesDeveloping handheld Android applications tailored for resilient zero-signal field operations.
Cross-platform mobile development, native components, handheld UX.
Local SQLite persistence, transactional data queuing, conflict resolution.
Leadership & Field Operations
3 CapabilitiesManaging cross-functional field teams, multilingual communication, and data quality assurance.
Directing on-site research crews across multi-year AEON Mall engagements.
Supervising multilingual (English-speaking) teams and managing international handoffs.
Real-time field validation, survey protocol compliance, data sanitization.
READY TO BUILD
PRACTICAL SYSTEMS?
Whether you are looking for a full stack developer who understands business workflows, an engineering lead with field supervision experience, or want to discuss automated data extraction architectures, feel free to reach out directly.