Gabriel Concepcion
Senior Full Stack Developer
Schedule a MeetingAnyone can launch. Few can maintain.
In the age of AI, the edge isn't who builds first, it's who builds it right. Your business deserves more than a vibe-coded website.
Affordable, reliable tech solutions built for MSMEs.
About Me
Professional Summary
Results-driven Senior Full Stack Developer with 18+ years of progressive experience building scalable web applications and leading high-performing development teams. Proven track record of optimizing system performance (reduced report generation from 40 minutes to 5 minutes), architecting microservices handling 562+ transactions per minute, and delivering complex projects under tight deadlines. Expertise in modern JavaScript frameworks, cloud-native solutions, and team leadership with a passion for mentoring junior developers and staying current with emerging technologies.
Projects
Services
Core Services
Website Maintenance
Ongoing updates, performance monitoring, bug fixes, and content updates for business websites
AI Server Hosting
Managed hosting for AI-powered apps and automation tools with uptime monitoring and scalable infrastructure
Consultation
Tech strategy sessions for small businesses looking to digitize or automate operations
Project Management Automation
Automating task tracking, team workflows, and reporting with custom automation systems
Additional Services
Online Booking System Setup
Custom booking pages for wellness clinics, salons, spas, hotels, resorts, Airbnb hosts, and travel agents with calendar sync, automated confirmations, and payment integration
Member Management System
Digital membership portals for organizations, clubs, and gyms with member registration, renewals, access control, and automated notifications
E-Commerce & Online Store Setup
Product listings, cart, checkout, and order management for online sellers
CRM & Customer Database Setup
Contact management, lead tracking, and follow-up automation for MSMEs managing client relationships
WhatsApp / Chatbot Automation
AI chatbots for customer inquiries, booking confirmations, order updates, and FAQs
Digital Forms & Data Collection
Intake forms, survey tools, and automated data routing for service businesses
Project Management Office
Centralized PMO for subdivision and condo developments — tracking construction milestones, homeowner association management, property deliverables, and developer timelines with custom dashboards
Affiliate System
Custom referral and affiliate tracking platforms with unique links, commission management, payout reporting, and partner dashboards for MSMEs and online businesses
Staff & Office Management
Digital systems for managing schedules, attendance, task assignments, and internal communications to streamline day-to-day operations
Automated Reply to Inquiries
AI-powered auto-response setup for FAQs, booking confirmations, service/order status updates via email, chat, or messaging apps — reducing manual response time
Customer Promos & Notification System
Automated promotional campaigns and push/SMS/email notifications for announcements, loyalty rewards, flash sales, and seasonal offers
Professional Experience
Pickup Coffee | Senior Full Stack Developer
Jan 2023 - Present
- Architected and developed 4 core microservices (Cards, Stamps, Wallet, Voucher) with QR code integration, supporting 100+ daily active merchants
- Built comprehensive Reports Dashboard and Mobile PWA
- Designed API Gateway architecture serving Barista Tablet and Mobile App
- Tech Stack: ReactJS, NodeJS, ExpressJS, TypeScript, Kubernetes, Redis, AWS (PostgreSQL, MySQL)
XSwap Philippines | Lead Full Stack Developer
Sept 2020 - Dec 2022
- Engineered high-performance wallet backend processing 562+ transactions per minute using NodeJS & Redis caching strategies
- Led cross-functional team of 4 (2 developers, 2 QAs) in successful migration from monolithic Laravel architecture to 5 independent microservices
- Integrated multiple payment gateways (Dragonpay, Xendit) and developed crypto Bitcoin cash-in service
- Implemented robust CI/CD pipelines using GitHub Actions and AWS Serverless, reducing deployment time from 2 hours to 15 minutes
- Tech Stack: NodeJS, ReactJS, AWS (Lambda, API Gateway, DynamoDB, EC2), Redis, PostgreSQL, MySQL
Appsolutely Inc. | Senior Full Stack Developer
Aug 2017 - Sept 2020
- Delivered MVP White-label E-Commerce platform in 2 weeks using ReactJS
- Architected cryptocurrency trading platform using Laravel & VueJS with real-time data processing and secure transaction handling
- Led migration of large-scale e-commerce mobile app to responsive web platform using ReactJS & NodeJS
- Optimized complex database queries and implemented caching strategies, reducing report generation time from 40 minutes to 5 minutes (87.5% improvement)
- Tech Stack: Laravel, VueJS, ReactJS, NodeJS, MySQL, GraphQL, Redis, AWS, Netlify
Forward Solutions | Full Stack Developer
Feb 2014 - Aug 2017
- Developed enterprise-level management systems for multiple government agencies, serving 10,000+ end users
- Led development team of 6 (3 developers, 3 QAs) in building HRIS, electronic voting systems, and gift platform applications
- Implemented advanced SQL optimization techniques, achieving 80%+ improvement in report generation performance across all systems
- Tech Stack: CodeIgniter, Laravel, VueJS, AngularJS, Amazon Web Services (AWS)
Gameloft | PHP Tools Programmer
May 2010 - Feb 2014
- Maintained and enhanced critical Project Management System
- Managed Device Management System
- Implemented automated reporting features
- Tech Stack: PHP, Zend Framework 2, Git, YUI JavaScript Library
Via-Phone Telecommunication Co. | PHP Programmer
Jun 2007 - May 2010
- Developed comprehensive Calls Management System tracking order history, callbacks, and agent performance metrics
- Built and deployed 15+ e-commerce franchise websites for medicine resellers, increasing online sales channels
- Created automated reporting system that improved management visibility into call center operations
- Tech Stack: PHP (CodeIgniter), MySQL