I'm Carlos Aracena
Full-Stack JavaScript
Developer.
JavaScript Full Stack Developer with a strong focus on frontend engineering, building scalable and high performance web applications. Experienced delivering platforms across fintech, telecommunications, and travel industries. Highly adaptable across technologies, with hands on experience working beyond the JavaScript ecosystem including Java and .NET when projects require it.
Years of Experience
Telecom · Banking · Travel-Tech
Multi-Industry Experience
Github Projects Done
Turning Complex Systems Into Simple, Human-Centered Interfaces
I’m a full-stack engineer with a strong focus on modern front-end development, specializing in React, Next.js, TypeScript, and Angular. While frontend is where I’m strongest, I also have solid backend experience with Node/Express.js/Nest.js and relational databases like PostgreSQL and Oracle, as well as non-relational systems such as MongoDB. This allows me to understand and build full feature flows end-to-end. I blend clean engineering with thoughtful UI design to create fast, intuitive, and reliable user experiences.
Over the past several years, I’ve delivered production systems across travel-tech, telecom, and banking—building payment flows, internal dashboards, operational tools, and data-driven interfaces used daily by real customers and enterprise teams. Whether developing reusable component libraries, integrating secure APIs, or optimizing performance for large datasets, my goal is always the same: create modern, human-centered products that make complex tasks feel simple.
Personal Projects

Threads Social Network
Built a full stack social network with Next.js and Express.js supporting 20 to 40 active users and designed with an architecture capable of scaling to thousands.

Stock Market App
Real time stock tracking mobile app built with React Native and NestJS, featuring live market updates, interactive charts, secure Auth0 authentication, and personalized price alerts.

Pokédex App
Modern Pokédex web app built with React and TypeScript featuring search, filtering, evolutions, and detailed Pokémon stats with a fast and responsive interface.

Movie Tracker (Legacy)
Movie discovery app built with React and the TMDb API, originally created in 2020 and recently modernized to React 18 with deployment on Vercel.
My Favorite Tools
Practical Experience And Education
With a background in software engineering and hands-on experience across front-end, backend, and full-stack development, I’ve worked on production systems in travel-tech, telecom, and banking. From payment flows and internal dashboards to responsive web apps, each project has strengthened my focus on building clean, reliable, and intuitive digital experiences.
Work Experience
Senior Frontend Developer
Leading front-end development for travel-tech platforms, building booking, payment, and operations tools using React, TypeScript, Redux, SCSS, and Stripe integrations. Delivering high-performance UI experiences for hotels, rentals, and travel agencies.
Senior Software Engineer
Developed and maintained enterprise web applications for the largest telecom company in the Dominican Republic. Built internal tools for plan management, penalty calculations, and customer operations using React, Java, .NET, and Oracle.
Full Stack Senior Developer
Implemented financial systems for savings, credit, and mortgage operations. Built Angular, Next.js, and Nest.js applications, developed SQL procedures, and optimized internal tools for loan processing and financial product management.
Project Business Analyst (Contractor)
Coordinated communication between business stakeholders and development teams. Gathered requirements, validated system flows, and helped ensure successful delivery of banking software projects.
Education
Engineer's Degree, Computer Software Engineering
Engineering program focused on software architecture, programming, databases, and systems analysis.
Software Technologist
Training in software development, algorithms, databases, and web technologies.
Certifications & Courses
Generative AI Fundamentals
Introduction to generative AI concepts, large language models, and practical applications.
Postman API Fundamentals Student Expert
Hands-on course covering REST APIs, HTTP requests, collections, and API testing workflows.
EF SET English Certificate (C1 Advanced)
English proficiency certification at an advanced C1 level.
Introduction to Database
Fundamentals of SQL, relational models, and database design.
Desarrollo de Software Seguro Basado en OWASP
Secure software development practices based on OWASP standards.
Google Cloud Platform Fundamentals: Core Infrastructure
Core concepts of GCP: compute, storage, networking, IAM, and cloud deployment.
Scrum Foundation Professional Certification (SFPC)
Training in Scrum principles, Agile methodologies, and team workflows.
Angular Basics for Absolute Beginners
Introduction to Angular components, routing, TypeScript, and application structure.
Fundamentals of Web Programming
Training in HTML, CSS, Bootstrap, JavaScript, and responsive UI development.
Introduction to Programming Using JavaScript
Core JavaScript syntax, functions, DOM manipulation, and problem-solving foundations.
LinkedIn Recommendations

Sammy Hernández
QA Automation at Asociación Popular de Ahorros y Préstamos
Sammy worked with Carlos José on the same team • February 3, 2024
Es un placer recomendar a Carlos José Aracena como un profesional altamente talentoso y experimentado en el campo del desarrollo de software. Durante el tiempo que trabajamos juntos, quedé impresionado por su habilidad para abordar desafíos complejos y entregar soluciones de alta calidad. No solo demuestra un profundo conocimiento técnico, sino que también posee una visión estratégica que contribuyó significativamente al éxito de nuestros proyectos. Su capacidad para liderar equipos técnicos y colaborar eficazmente con otras áreas funcionales es ejemplar.
View on LinkedIn →
