John Uel Mangaba · Full-Stack Developer · Philippines · Since 2023

Full-stack developer for teams that need clear UIs, solid APIs, and reliable launches.

I help teams and clients turn ideas into working web products. Clean UI, steady backend work, and launches you can maintain. Building and shipping since 2023. Open to contract, freelance, and remote roles.

View selected work Contact me

Focus: Full-stack web development
Based: Philippines · Remote (PHT)
Open to: Contract, freelance, and remote roles
Proof: Building and shipping since 2023

Selected work

Projects and systems

A selection of websites, systems, and full-stack applications I have built.

All work

Developer

AI Helpdesk Support with Knowledge Integration

Problem

Support teams often spend too much time answering repetitive questions, while disconnected knowledge bases and custom web apps make support workflows slow and inconsistent.

Contribution

Built a helpdesk support solution powered by AI knowledge retrieval and custom integrations for web applications, allowing users to get context-aware answers while enabling support teams to connect tickets, documentation, and app workflows in one system.

Outcome: Improved response speed, reduced repetitive support workload, and made support more scalable through AI-assisted answers, automated routing, and connected knowledge workflows.

LLMAutomationDatabaseSocketEmailAPI

Case study Live Source

Developer

HealthCare Website with AI Appointment Setter

Problem

Patients struggle to book appointments outside office hours, while clinic staff spend excessive time on repetitive scheduling tasks

Contribution

Built a patient-friendly website with an AI booking assistant that answers FAQs, collects appointment details, and guides users through scheduling in one seamless flow.

Outcome: Reduced manual workload for front-desk staff, enabled 24/7 appointment booking, and created a smoother patient journey with faster confirmations and fewer missed inquiries

n8nchatgptllmautomation

Case study Live Source

Expertise

How I help teams ship

What I own in a build, not a long list of tools.

Product interfaces

Clear, accessible UIs for SaaS and content sites. Strong layout, design systems, and smooth interaction.

APIs and data

Server routes, data models, and integrations that keep the frontend stable and easy to extend.

Launch and performance

CMS setup, SEO basics, deploy, and speed checks so the product stays solid after launch.

Profile

Background

A short look at how I work with product and engineering teams.

About

I work across the stack: UI, APIs, data, and launch. Clients and hiring teams get one person who can connect the interface to the backend. I have been building and shipping web work since 2023.

I like clear goals, systems that stay easy to change, and updates that still help after the first release. Based in the Philippines. Available for remote work across time zones.

Writing

Latest notes

Short notes on product, performance, and delivery.

All writing

Start a conversation

Hiring managers: share the role, stack, and timeline. Clients: share the product problem, scope, and target launch. I usually reply within a couple of days.

contact.uelmangaba@gmail.com

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