Angel Valladares

Full-Stack Software Engineer & Mobile Lead at AirPlx

Remote · Open to relocation

About

I am a Full-Stack Software Engineer at AirPlx, the aviation operations platform that gives FBOs and MROs one live picture of their whole base: inbound aircraft detected on radar through FAA flight plans and ADS-B, AI-assisted hangar and ramp planning (AutoStack), tow safety checklists, damage documentation and departure reporting. I build the web platform end to end and lead development of the AirPlx mobile app, used by line crews on the ramp every day.

Prior to joining AirPlx, I built a strong track record as a Top Rated freelancer on Upwork with a 100% Job Success Score, placing me in the top 10% of global talent. During this time, I successfully delivered production-grade solutions for clients worldwide, ranging from data-driven automation tools to full-scale web applications.

On the technical side, I specialize in Node.js, React, and PostgreSQL, with extensive experience in AI and LLM integrations, including chatbots with OpenAI/Claude APIs, AI-powered content generation, and speech-to-text/text-to-speech capabilities. I deliver complete end-to-end solutions focused on performance, maintainability, and real-world impact.

Communication is never a barrier: I hold a B2 English proficiency level. I am fully capable of maintaining professional conversations, participating in technical interviews, and collaborating in team meetings without difficulty. My written communication is excellent, ensuring clear documentation and smooth coordination with international partners.

Work Experience

AirPlx

March 2026 - Present

Full-Stack Software Engineer · Mobile Lead

Remote

React
React Native
Expo
Node.js
TypeScript
PostgreSQL
3D Visualization
AI Optimization

AirPlx tracks every aircraft on a base from radar detection to departure, replacing whiteboards and spreadsheets with one live picture shared by the front desk and the ramp. I work full-stack on the web platform and lead the mobile app.

Full-Stack Platform Development: Shipping features end to end with React, Node.js, TypeScript and PostgreSQL: live base view, inbound flight tracking fed by FAA flight plans and ADS-B, movement history, visit records and tenant reporting.
Mobile Lead: Leading development of AirPlx Mobile (React Native + Expo, iOS and Android) — offline-capable ramp operations, per-airframe pre-tow safety checklists, walkaround inspections with photo and video, damage reports marked on aircraft diagrams, and push notifications that surface field issues to the office instantly.
Spatial Optimization: Improving the AI-driven AutoStack algorithms and 3D visualization that test hangar and ramp layouts against real aircraft dimensions, maximizing utilization while verifying clearances.
System Architecture: Scalable database design and real-time conflict detection for safer ground operations, built on manufacturer-verified aircraft data and spatial models.

Freelance (Upwork)

April 2025 - March 2026

Full-Stack Software Engineer · Top Rated · 100% Job Success

Remote

MERN
PERN
Next.js
React
Node.js
NestJS
Express
TypeScript
Python
FastAPI
PostgreSQL
MongoDB
Supabase
OpenAI API
LLM Integration

As a Top Rated freelancer with 100% Job Success Score, I architected and delivered production-grade applications for global clients, specializing in full-stack ecosystems and AI-driven automation.

AI & LLM Architecture: Built production-grade chatbots and AI-powered automation using OpenAI/Claude APIs, significantly accelerating business workflows.
End-to-End Development: Designed and deployed scalable web apps using MERN/PERN stacks, Next.js, and Supabase with a focus on performance and maintainability.
Cloud & Infrastructure: Proficient in Dockerized environments, managing high-performance VPS infrastructure for reliable hosting of client and internal projects.
Project Leadership: Directly managed client relationships, technical requirements, and production deadlines with a proven 100% success rate.

Copenergy SA

Jul 2024 - Dec 2025

Full-Stack Developer & Electrical Plant Operator

Hybrid

Next.js
Node.js
Python
React
NestJS
SQL Server
PostgreSQL

Passionate professional combining software development expertise with operational management in the energy sector. Create and maintain applications that optimize operations and monitoring in the electrical plant, while developing web applications for various departments.

Developed web applications to optimize electrical plant operations and monitoring systems.
Managed electrical plant machinery and monitored systems for efficient and safe operation.
Combined technical and operational knowledge to deliver tailored solutions for business needs.
Committed to innovation and sustainability, improving existing processes through technology.
Contributed to a collaborative work environment with continuous improvement mindset.

DAI

Jul 2023 - Jan 2024

IT Auxiliary

On-site

C#
Microsoft SQL Server
.NET
Web Development

Provided IT support and development services in a hybrid work environment.

Assisted in web development projects using C# and Microsoft SQL Server.
Provided technical support and maintenance for internal systems.
Collaborated with cross-functional teams on IT initiatives.

DAI

Feb 2023 - Jun 2023

IT Intern

On-site

C#
Web Development
.NET
SQL Server

Completed internship focusing on web development and IT support.

Gained hands-on experience in web development with C# and SQL Server.
Assisted in developing and maintaining internal applications.
Participated in code reviews and team meetings.

Impactful Projects

AirPlx Mobile

Mobile app for airport ramp operations, where I am one of the principal engineers building features and fixing bugs. Line crews see the live base view, run per-airframe pre-tow safety checklists, complete walkaround inspections and file damage reports at the aircraft. Already in production at around a dozen customer bases.

React Native
Expo
TypeScript
Node.js

AirPlx Web Platform

Aviation operations platform that gives FBOs and MROs one live picture of their base, from radar detection to departure. I am one of the principal engineers on the team, building new features and fixing bugs across the web platform.

React
TypeScript
Node.js
PostgreSQL

Yiddish Jobs

Platform helping the Yiddish community in Boro Park, New York find employment. Assisted with web platform development, internal tools, and automation to support job seekers and local businesses.

Next.js
React
TypeScript
Tailwind CSS

Pinky's Store

E-commerce platform and inventory management system for a local cosmetics business. Automated sales processes and provided the owner with an internal tool for efficient inventory tracking and sales management.

Next.js
React
Node.js
PostgreSQL

Education

Universidad Nacional Autónoma de Honduras (UNAH)

2016 - 2025

Systems Engineering

Skills

AI-Driven Development
Next.js
Supabase
PostgreSQL
OpenAI API
Claude API
LLM Integration
Document Retrieval
React
Mobile Development
React Native
Expo
TypeScript
Node.js
MERN Stack
PERN Stack
Express
NestJS
GraphQL
REST APIs
API Integration
Docker
Python
FastAPI
MongoDB
Tailwind CSS
HTML/CSS

Latest Posts

From Full-Stack to AI Engineer: How the Elite Code in 2026 and My 3-Year Plan

I researched how top engineers orchestrate AI agents today, what an AI engineer actually does and gets hired for, and turned it into a concrete roadmap with courses, projects, and a budget.

September 5, 2026·14 min read

AI Engineering

Career

Claude Code

Building AI-Powered Apps with Next.js and OpenAI

A practical guide to integrating OpenAI's API into your Next.js applications, from chatbots to content generation.

May 15, 2026·8 min read

Next.js

OpenAI

Certificates & Certifications

View all

Claude Code in Action

Anthropic Education • January 2026

Front-End Training G5 - ONE

Alura Latam • July 2023

EFSET English Certificate 56/100 (B2 Upper Intermediate)

EF Standard English Test (EF SET) • October 2022