AG Nieve

I build production-ready web, mobile, backend, e-commerce, and AI-enabled systems for remote teams, international companies, and business operations that need reliable software.

Senior full stack developer for product teams that need reliable execution across the stack.

I build and maintain production systems across web, mobile, backend, databases, e-commerce, integrations, AI-enabled workflows, and server operations.

My background spans government systems, remote startups, agencies, and international teams where delivery, maintainability, and production support matter.

AG Nieve, senior full stack developer

Core stack

Frontend

React.js Next.js TanStack Start TypeScript

Mobile

React Native Expo

Backend

Node.js Express.js NestJS Laravel Django Go

Data

MySQL PostgreSQL MongoDB Convex

Platforms

Shopify WordPress GraphQL OpenAI API Ubuntu Linux

Systems built for operations, automation, public service, and customer workflows.

Freelance Period Fulfillment operations platform

FP 3.0

A production fulfillment platform for business workflows, order processing, integrations, and shipment operations.

  • Built frontend workflows using TanStack Start and TypeScript.
  • Developed backend and operational logic with Convex and Go.
  • Supported order, shipment, and fulfillment processes with operational reliability in mind.
Freelance Period AI support and automation tool

AI Chatbot

An AI-powered assistant for support automation and user assistance with persistent data and backend services.

  • Integrated OpenAI-powered chatbot functionality.
  • Built the frontend application using TanStack Start and TypeScript.
  • Worked with Convex, PostgreSQL, and Go for backend and data workflows.
Castle Digital AI web and mobile application

WhatKey

An AI application that scans a physical key and identifies the room or door associated with it.

  • Contributed to AI-driven key recognition workflows.
  • Developed backend services using Node.js and Express.js.
  • Built web and mobile interfaces with React.js, React Native, and Expo.
Castle Digital Crypto education platform

Oli.ed

A web and mobile education platform where users can learn and earn through coordinated product workflows.

  • Built web features using Next.js.
  • Developed mobile functionality using React Native and Expo.
  • Worked on backend APIs with Nest.js and PostgreSQL.
Digos City Government Public health tracking system

COVID Tracker

A civic system for public health monitoring, reporting, information management, and mobile access.

  • Built web application features using React.js.
  • Worked on backend functionality using Django.
  • Supported mobile access and server-side operations during an urgent health response.
XTendly Document management system

GPA DMS

An international document management platform covering web, mobile, backend, database, and external API work.

  • Maintained and developed web application features using React.js.
  • Worked on mobile functionality using React Native.
  • Integrated Laravel, MySQL, and XML API workflows.
XM

More production and client-facing systems.

JOMS

Internal government system for managing Job Order employees in Digos City Government.

Co

RRMS

Emergency response web application for citizen assistance, reporting, and resource coordination.

Xffiliate

Partner tracking, affiliate workflows, and business operations.

Prosperna

Full stack product development and WordPress-related implementation.

Sargood

Booking workflows and customer-facing functionality.

Client Commerce Website

Frontend development, CMS and e-commerce integrations, Shopify workflows, and production support.

NIP Builder

Modern interface for creating and managing business outputs.

Shipping API

Shipping workflows, third-party integrations, automation, and operational data processing.

Remote, international, agency, startup, and government delivery.

2024 - 2026

Freelance Period

Senior Full Stack Developer

Built and maintained fulfillment platforms, shipping APIs, AI tools, company website functionality, Shopify workflows, and internal business systems.

2022 - 2024

Castle Digital

Full Stack Developer

Worked on international client projects across AI applications, hotel booking systems, cryptocurrency education platforms, web apps, mobile apps, APIs, and databases.

2020 - 2022

XTendly

Full Stack Developer

Developed and maintained web, mobile, backend, database, e-commerce, affiliate, document management, and WordPress-related systems.

2018 - 2020

ICT Department, Digos City Government

Full Stack Developer

Built government systems for job order management, emergency response, risk reduction, public health tracking, reporting, and server-supported civic workflows.

Available for remote senior full stack roles and full-time opportunities.