Daniel Araya
Full Stack Developer & Software Engineer
Turning ideas into impactful digital experiences, driven by curiosity and innovation.
Featured Projects & Experience #
Brunca Code Challenge Platform
Interactive coding challenge platform for technical assessments. Features real-time code execution, automated testing, and comprehensive evaluation metrics. Built with modern web technologies for a seamless learning experience.
CuidApp - Healthcare Management
Healthcare management application designed to streamline patient care coordination and medical record management. Focuses on improving communication between healthcare providers and patients.
Faro Development Project
Enterprise-level development project with comprehensive business logic and workflow automation. Built with modern architecture patterns and scalable infrastructure.
Adolfo Quesada Román - Portfolio
Professional portfolio website showcasing creative work and projects. Modern design with smooth animations and responsive layout.
A-Team Builders
Corporate website for construction and building services company. Features project showcases, service information, and client testimonials.
Polygon.io Financial Data ETL Pipeline
Production-ready ETL pipeline for financial market data. Automatically downloads and processes flat files or API data from Polygon.io, then loads it into PostgreSQL for analysis. Built with Python, optimized for high-volume financial data processing.
AI Trading Model - Short Trading Strategy
Machine learning model for short trading strategies in financial markets. Dockerized environment with MySQL, phpMyAdmin, and Python for market gap analysis. Focused on pattern recognition and automated trading signals.
RTMP Relay Streaming System
Comprehensive Docker-based RTMP streaming solution that captures web content via Selenium and streams to multiple platforms (YouTube, Twitch, etc.). Includes HLS and DASH support for adaptive streaming. Complete production infrastructure with monitoring and load balancing.
AI Agent Workflow Automation
Chrome extension using LLMs like GPT-3.5 and Gemini to help developers refine prompts and get better responses. Acts as an intelligent agent, enhancing interactions and improving output quality. Future support for LLaMA and other models.
Freelance Full Stack Developer
Freelance / Multiple Projects
- ✓Built 10+ production web applications
- ✓Implemented scalable architectures with Next.js and FastAPI
- ✓Integrated third-party APIs
- ✓Database optimization and cloud deployment (AWS, Azure)
AI Research – Seismic Data Analysis
CENAT Supercomputing Center
- ✓Using SeisLM model with new seismic datasets on Kabré supercomputer
- ✓Leveraging HPC resources for large-scale seismic data processing
- ✓Applying transformer-based models to earthquake data analysis
Educational Projects
Educational Projects
- ✓Interactive learning platform with real-time code execution
- ✓Implementation of secure authentication and authorization systems
Technical Skills #
Technologies I work with to build amazing products
Frontend
TypeScript
React
Next.js
Backend
Python
Java
Database
PostgreSQL
MongoDB
DevOps & Cloud
AWS
Docker
Ansible
Terraform
GitHub Actions
Grafana
Vercel
Operating Systems
Arch Linux
Debian
Ubuntu
Conferences & Presentations #
Sharing knowledge and experiences with the tech community
National Changhua University of Education
Speaker – 21st International Conference on Technology, Knowledge, and Society
Presentation:
Regional strategy for STEM events: the case of UNA Brunca Code Challenge
Fundación Universitaria Compensar
Speaker – Educational Technology and Innovation Congress
Presentation:
Real-time translation agents using artificial intelligence (STT, TTS)
About Me #
Full Stack Developer & Software Engineer
I'm a passionate Full Stack Developer with expertise in building modern web applications. I love solving complex problems and creating efficient, scalable solutions.
Education
Bachelor's in Systems Information Engineering
Universidad Nacional de Costa Rica (UNA)
2021 - 2025
Costa Rica
✓ Available for work
Interests
- • Backend Development
- • Cloud Computing
- • Artificial Intelligence
- • Machine Learning
Full Stack
From React to Express, FastAPI, Java, I architect and build complete solutions with modern technologies and best practices.
AI & Data Engineering
Building ETL pipelines, training ML models for trading algorithms, and integrating LLMs for intelligent automation and decision-making.
DevOps & Cloud
Docker orchestration, Ansible, Terraform, CI/CD pipelines with GitHub Actions, AWS infrastructure, Grafana monitoring, and real-time streaming systems.
Beyond the Code
I'm constantly exploring emerging technologies—whether it's building streaming infrastructure with RTMP relay systems, developing trading algorithms with ML, or creating financial data ETL pipelines for market analysis.
When I'm not coding, you'll find me diving into the latest AI research, contributing to open-source projects, fine-tuning my Arch Linux environment, or experimenting with new frameworks and tools.
Outside of tech, I practice karate which helps me focus and maintain discipline.
Always learning. Always building. Always pushing boundaries.
Education & Background
Bachelor's Degree in Computer Engineering
Universidad Nacional de Costa Rica (UNA)
Specialized in Software Development & AI Systems