✦ Senior Full-Stack Web Developer · 17+ Years Global Experience

Architecting Resilient Platforms, Enterprise APIs & High-Impact Systems.

I design, build, and optimize mission-critical web applications for global clients across FinTech, PropTech, MedTech, and enterprise SaaS. Specialized in robust backend architectures, payment systems, telephony automation, and scalable cloud infrastructure.

View Featured Projects WhatsApp Quick Chat Save Contact (vCard)
Based in Philippines · Serving US & Global Teams
Flexible Timezone Overlap (US EST / PST / AEST)
Proven 100% Remote Delivery
17+
Years of Engineering

Hands-on architecture, backend systems, and modern frontend delivery.

40+
Production Systems

Client portals, integrations, automation pipelines, and custom SaaS platforms.

100%
Remote Track Record

Reliable asynchronous and synchronous collaboration across global time zones.

6+
Key Industries

FinTech & Credit, PropTech, MedTech & Dental, Travel, and Enterprise IT.

Production Portfolio

Featured Work & System Case Studies

A curated selection of production applications, proptech platforms, clinical portals, and financial gateways deployed on this server and in active client use.

Enterprise SaaS · Client Portal Next.js · Docker

Enterprise Multi-Tenant Client Portal

High-performance full-stack client portal and workflow automation platform containerized with Docker and served via an Apache reverse proxy layer, built for high concurrency and secure account administration.

  • Dockerized Next.js App Router architecture with automated subpath asset routing
  • Reverse proxy configuration maintaining zero downtime and microservice isolation
  • Responsive UI dashboard with modern accessible component architecture
Next.js React Docker Compose Apache Proxy TailwindCSS TypeScript
Explore Live System
MedTech · Clinical Education Astro · ROI Engine

Clinical Medical Education & ROI Engine

High-speed clinical resource and sales enablement platform for advanced dual-wavelength medical lasers, featuring 20+ surgical procedure demonstrations and an interactive practice ROI calculation engine.

  • Interactive financial ROI calculator with Section 179 tax deduction modeling
  • Peer-reviewed PubMed clinical research index with instant category filtering
  • Accessible modal video lightbox for high-resolution surgical procedure demonstrations
Astro TypeScript ROI Modeling JSON-LD HTML5 Video Performance
Explore Live System
PropTech · Telephony Automation Twilio · Call-Capture

PropTech Telephony Lead Automation & CRM

Real estate sales automation ecosystem featuring patented telephony call-capture IVR protocol, automated 3-day multi-channel SMS follow-up sequences, and real-time broker CRM.

  • Patented IVR call-capture protocol instantly sending caller info directly to agents
  • Automated multi-day SMS drip sequencing with under-60-second response latency
  • Automated micro-subscription billing integration ($9.95/mo) with instant extension setup
Telephony IVR Twilio SMS Lead CRM Stripe Billing REST APIs PWA
Explore Live System
FinTech · Enterprise Gateway Bureau APIs · Security

FinTech Multi-Bureau Gateway & Billing Engine

High-scale financial workflow platform integrating directly with national credit bureau data gateways (Experian, TransUnion, Equifax), handling automated regulatory dispute logic, PCI-DSS compliance, and recurring subscription billing.

  • Direct REST & SOAP integrations with Experian, Equifax, and TransUnion bureau feeds
  • Automated legal dispute generation engine cutting customer processing time by 90%
  • PCI-DSS compliant recurring billing, tokenized payment vaults, and sensitive PII encryption
PHP 8 MySQL Credit Bureau APIs Stripe AWS EC2/RDS Data Security
Long-Term Enterprise Core
Technical Mastery

Architecture, Engineering & Tooling

Deep full-stack proficiency honed over nearly two decades of production releases, high-concurrency architectures, and mission-critical API integrations.

Architecture & Backend Engineering

Core Strength

Designing resilient backend foundations, domain-driven schemas, relational data optimization, and scalable server-side business logic.

PHP (Modern 8.x) Python Node.js MySQL & MariaDB PostgreSQL Redis Caching REST & SOAP Architecture Database Indexing & Tuning System Design

Frontend & Modern Frameworks

Interactive UI

Building responsive, accessible, and blindingly fast client interfaces with state-of-the-art React and static-generation frameworks.

JavaScript (ES6+) TypeScript Next.js React Astro Vanilla CSS3 & Grid TailwindCSS Web Performance / Core Web Vitals ARIA Accessibility

API Integrations & Automation

Business Workflows

Bridging third-party platforms into seamless business engines, handling real-time webhooks, transaction flows, and telephony communications.

Stripe Payments & Subscriptions Twilio Voice & SMS Credit Bureau Integrations GoHighLevel CRM KrakenCRM Webhook Pipelines Payment Gateway Tokenization Multi-Channel Follow-ups

DevOps, Cloud & Security

Reliability

Deploying and maintaining production workloads with containerization, reverse proxies, automated backup strategies, and hardened security.

Docker & Docker Compose Apache & Nginx Reverse Proxy AWS (EC2, S3, RDS) DigitalOcean & Linode Linux Administration (Ubuntu/Debian) Git & GitHub Actions PCI Compliance & PII Protection SSL/TLS & CORS Hardening
Professional Journey

Career Experience & Leadership

A documented track record of advancing technical ownership, mentoring engineers, and delivering business value across long-term engagements.

2019 — 2025 Remote · United States Client

Senior Full-Stack Web Developer & Technical Lead

U.S.-Based Financial & Credit Solutions Enterprise

  • Architected and scaled core financial platform services connecting with Experian, Equifax, and TransUnion bureau gateways.
  • Engineered automated dispute document generation workflows, reducing manual client onboarding turnaround from 72 hours down to minutes.
  • Implemented PCI-compliant recurring subscription billing via Stripe, handling tens of thousands of dollars in monthly recurring revenue without transaction discrepancies.
  • Maintained continuous high reliability (99.9% uptime) across high-volume, compliance-heavy production systems handling sensitive consumer financial data.
2006 — 2019 Remote & On-Site · Global Clients (US, Australia, Philippines)

Software Engineer to Senior Solutions Architect

International Client Portfolio across PropTech, Travel & IT Services

  • Progressed through the engineering ladder from junior PHP developer to senior systems architect, designing full-lifecycle web applications.
  • Delivered custom multi-channel portals, real estate telephony automation engines, booking engines, and CRM integrations for clients in the US and Australia.
  • Standardized coding conventions, git workflows, automated test strategies, and containerized deployment pipelines across distributed remote teams.
  • Cultivated multi-year relationships with international founders and executives through consistent on-time delivery and proactive problem solving.
Reputation & Trust

What Clients & Collaborators Say

Consistent themes from long-term contracts, international product teams, and enterprise stakeholders.

"Efren brings deep full-stack expertise, excellent remote collaboration, and an uncompromising commitment to secure, scalable delivery. He consistently translates complex business requirements into reliable production systems."

US

Executive Leadership Team

U.S. Credit Services Enterprise · Multi-Year Engagement

"Working with Efren has been frictionless. His communication across timezones is proactive, his architectural recommendations save weeks of rework, and the reliability of what he deploys to production speaks for itself."

AU

Product Director

Australian Web & PropTech Venture · Long-Term Client

Direct Contact

Let's Discuss Your Next Initiative

Available for high-impact full-stack contract roles, enterprise platform engineering, API integrations, and technical architecture consulting.

Email Address (Click to Copy)
efpalabasan@gmail.com
WhatsApp Direct
+63 977 403 9417
Digital Business Card
Download vCard (.vcf)
Current Local Time Active
Loading local time...
Manila, Philippines (UTC+8) · Daily overlap with US morning / AU business hours

Send A Project Message

Fill in your requirements below to instantly compose and send an email directly to Efren.

Copied to clipboard