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

Learn more about my competitive advantage and why you should hire me for your next project.

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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.

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 clients.

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 architect and deliver production-grade applications for global clients, specializing in full-stack ecosystems and AI-driven automation.
  • AI & LLM Architecture: Engineered custom RAG systems, complex chatbots, and autonomous agents using OpenAI/Claude APIs, significantly accelerating business workflows.
  • End-to-End Development: Design and deployment of 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

  • 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

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

Certificates & Certifications

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