Angel Valladares - Angel Valladares — Full-Stack Developer & Freelancer in Honduras

Angel Valladares

Top Rated Full-Stack Developer · 100% Job Success on Upwork · AI & LLM Integration Specialist

Tegucigalpa, Honduras (CST)

For Upwork Employers

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About

I am a Top Rated freelancer on Upwork with a 100% Job Success Score, which places me in the top 10% of talent on the entire platform. My earnings, consistent delivery, and excellent client reviews have earned me this distinction. I invite you to visit my Upwork profile to see my track record firsthand.

I'm open to working through Upwork or through independent/direct contracts—whatever works best for you. While I currently work as a freelancer, I'm also very open to full-time positions. If you're a recruiter with a full-time role that matches my skill set, don't hesitate to reach out—I'd love to hear from you.

On the technical side, I specialize in MERN/PERN stacks, Next.js, and Supabase for building modern, scalable web applications. I also have deep expertise in AI and LLM integrations, including chatbots with OpenAI/Claude APIs, RAG systems, AI-powered content generation, and speech-to-text/text-to-speech capabilities. I deliver complete end-to-end solutions with maintainable code and reliable deadlines.

Work Experience

Freelance (Upwork)

April 2025 - Present

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

  • 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 deliver full-stack solutions and end-to-end applications for clients worldwide. My Upwork profile shows hundreds of hours of high-quality delivery with excellent reviews and consistent positive feedback from satisfied clients.
  • 100% Job Success Score: Proven history of happy clients and exceptional project delivery.
  • Top Rated Badge: Recognition for consistently delivering high-quality work with excellent client satisfaction.
  • Built complete web applications using MERN stack (MongoDB, Express, React, Node.js) and PERN stack (PostgreSQL, Express, React, Node.js).
  • Developed modern applications with Next.js, TypeScript, and Supabase for serverless architectures.
  • Implemented AI-powered features: OpenAI/Claude API integrations, RAG systems, chatbots, and LLM-powered content generation.
  • Designed and built production-grade REST/GraphQL APIs with Node.js (NestJS, Express) and Python (FastAPI).
  • Integrated third-party APIs and services including payment gateways, authentication providers, and AI/ML models.
  • Clear communication and reliable deadlines are my priority for every project.

Copenergy SA

Jul 2024 - Dec 2025

Full-Stack Developer & Electrical Plant Operator

  • 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

  • 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

  • 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.

TIGO (Milicom)

Mar 2019 - Jul 2019

Systems Analyst Intern

  • Systems Analysis
  • IT Support
  • Telecommunications
Completed internship at Tigo Honduras as a Systems Analyst.
  • Analyzed and documented system requirements and processes.
  • Provided IT support and assistance in telecommunications projects.
  • Gained exposure to large-scale telecommunications infrastructure.

Education

Universidad Nacional Autónoma de Honduras (UNAH)

2016 - 2025
Systems Engineering

Skills

  • MERN Stack
  • PERN Stack
  • Next.js
  • React
  • TypeScript
  • Node.js
  • NestJS
  • Express
  • Python
  • FastAPI
  • PostgreSQL
  • MongoDB
  • Supabase
  • GraphQL
  • REST APIs
  • OpenAI API
  • Claude API
  • LLM Integration
  • RAG Systems
  • API Integration
  • Docker
  • Tailwind CSS
  • HTML/CSS

Impactful Projects

Certificates & Certifications

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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

Angel Valladares - Angel Valladares — Full-Stack Developer & Freelancer in Honduras