Hoanh Le Kien. 🚀 Full-stack Developer (7 Yrs) | Laravel & Next.js expert. Specializing in Booking systems, Spa CRM & Custom Web Apps.
Technical Core
Laravel / PHP 8.x
Next.js / TypeScript
MySQL / GraphQL
DevOps / CentOS / Nginx
Technical Proficiency
Laravel
Next.js
MySQL
TypeScript
GraphQL
CentOS 7
TailwindCSS
Nginx
GitHub Actions
2015 - 2017
University of Greenwich Vietnam
Software Engineering
2017
FPT Nanoversity
Website Developing
Engineering History
2022 - PRES
CMC Global — Software Developer
Building and maintaining software for European clients. Focusing on modern web stacks and international standards.
2018 - 2022
H.I.S. Vietnam — Website Developer, Team Leader
Developed full-stack tourism platforms and management tools for high-volume booking systems. Also served as a team leader, coordinating development efforts.
Production Logs
Full-Stack Development
Talent Acquisition System
Sep 2023 - Present
Laravel 10Next.jsGraphQLTS
The Challenge
Managing complex multi-tenant data isolation while allowing customizable recruitment workflows and white-label branding for multiple organizations.
The Solution
Architected a scalable multi-tenant schema with a flexible workflow builder and headless GraphQL API, reducing CV processing time by 40% and improving recruitment efficiency by 35%.
Key Features
Customizable workflow builder supporting 10+ diverse hiring processes per tenant
CV/Resume management with automated screening processing 1000+ applications daily
Real-time candidate-employer communication channels with 99.9% uptime
Multi-tenant architecture supporting 50+ organizations with complete data isolation
Analytics dashboards tracking recruitment metrics and reducing time-to-hire by 30%
GraphQL API handling 5000+ requests daily with sub-200ms response times
Responsibilities
Developed and deployed 15+ client-requested features, improving recruitment workflow efficiency by 35%
Analyzed and optimized system performance, reducing API response time by 40% and database query time by 25%
Provided technical consultation leading to 20% reduction in development time for new requirements
Broke down complex tasks into manageable components, enabling parallel development and 30% faster delivery
Ensured system stability with 99.9% uptime and scalability supporting 10x user growth
Backend Engineering
Insurance Application
Aug 2022 - Aug 2023
Laravel 8Vue.js 3MySQL 5.7TS
The Challenge
Instantly calculating underwriting points and matching insurance packages based on extensive health and financial profiles, processing 500+ applications daily.
The Solution
Developed an intelligent matching engine with optimized risk evaluation algorithms, improving calculation accuracy by 25% and reducing processing time from 5 minutes to under 30 seconds.
Key Features
Automated underwriting point calculation processing 500+ applications daily with 98% accuracy
Comprehensive health and financial risk assessment profiles covering 50+ data points per application
Intelligent package matching system providing real-time recommendations with 95% customer satisfaction
Secure customer information management handling 10,000+ records with GDPR compliance
Automated eligibility screening reducing manual review time by 60% and improving coverage recommendations
Responsibilities
Analyzed feasibility of 8+ new requirements, identifying potential performance impacts and recommending optimal solutions
Provided technical consultation leading to 3 core feature enhancements and 20% system performance improvement
Debugged and resolved 50+ critical application issues, achieving 99.5% system uptime
Optimized underwriting algorithms improving accuracy by 25% and reducing calculation time by 80%
Web Development
Song Han Tourist v2
Sep 2021 - Aug 2022
Laravel 8Livewire 2Next.js 11CentOS
The Challenge
Reconstructing a major tourism platform serving 10,000+ monthly users while integrating CRM, booking, and documentation into a unified system.
The Solution
Built a unified full-stack solution with automated Zalo notifications and secure payment gateways, increasing page load speed by 45% and boosting online bookings by 60%.
Key Features
Advanced Content Management System managing 500+ tour packages and 1000+ blog posts
Integrated CRM tracking 5000+ clients and 2000+ leads with automated follow-up workflows
Digital travel document management storing 50,000+ documents with secure cloud backup
Zalo notification service sending 10,000+ automated confirmations/OTP monthly with 99% delivery rate
Real-time booking status updates reducing customer inquiry time by 50% and improving satisfaction
Responsibilities
Analyzed business requirements and developed technical solutions, reducing development time by 30%
Led full-stack development team of 3 developers, delivering 40+ features on schedule
Configured and maintained VPS infrastructure (Nginx, CentOS) achieving 99.8% uptime
Oversaw CI/CD pipeline reducing deployment time from 2 hours to 15 minutes using GitHub Actions
Optimization
Song Han Modernization
Sep 2020 - May 2021
Laravel 8LivewireCentOSNginx
The Challenge
Removing 15+ outdated legacy features and improving system performance while implementing new booking tools for 5000+ monthly active users.
The Solution
Upgraded core capabilities with WiFi booking services and streamlined payment links, increasing revenue by 25% and reducing transaction processing time by 50%.
Staff payment link generation tool handling 500+ transactions monthly, improving billing efficiency by 40%
System optimization removing 15 legacy features and improving overall performance by 35%
RESTful API supporting 3 third-party integrations with 99.5% reliability
Responsibilities
Developed and implemented WiFi booking and payment link generation, increasing online revenue by 25%
Conducted 100+ code reviews and managed pull request workflows, maintaining high code quality standards
Configured and maintained VPS server infrastructure (CentOS, Nginx) achieving 99.7% uptime
Established CI/CD pipeline reducing deployment time by 75% using GitHub Actions
Integration
H.I.S. Manila Blog
The Challenge: Visualizing analytics dashboard in real-time for international marketing teams.
Built a streamlined blog platform for H.I.S. Philippines with integrated Google Analytics API, increasing content traffic by 40% and enabling real-time performance tracking for 50+ articles.
Laravel 6Google API
Product Development
MICHI Spa Ecosystem
The Challenge: Multilingual customer scheduling for international spa clientele.
Comprehensive booking and management system supporting 3 languages, processing 300+ bookings monthly with automated reminders reducing no-shows by 30% and improving resource allocation efficiency by 45%.
Laravel 5jQuery
E-Commerce
SKYhub Vietnam
The Challenge: Scalable tour availability tracking for high-traffic booking platform.
Online tour booking platform processing 1000+ transactions monthly with Onepay payment integration, reducing booking errors by 50% and improving trip coordination efficiency for 200+ tour operators.