Hi there! I’m Marlon Alexis Manzano Reyes, a full-stack developer with hands-on experience building scalable web applications using the JavaScript ecosystem, including React, Node.js, and TypeScript. I excel at delivering robust, user-friendly features and collaborating across teams to meet business needs. I also explore AI-assisted development to accelerate workflows while maintaining code quality and architectural integrity. I enjoy working with cross-functional teams to define technical requirements, design solid architectures, and ship production-ready features. I mentor teammates, standardize best practices, and continuously improve development processes and tooling to deliver reliable, scalable solutions.…

Marlon Alexis Manzano Reyes

Hi there! I’m Marlon Alexis Manzano Reyes, a full-stack developer with hands-on experience building scalable web applications using the JavaScript ecosystem, including React, Node.js, and TypeScript. I excel at delivering robust, user-friendly features and collaborating across teams to meet business needs. I also explore AI-assisted development to accelerate workflows while maintaining code quality and architectural integrity. I enjoy working with cross-functional teams to define technical requirements, design solid architectures, and ship production-ready features. I mentor teammates, standardize best practices, and continuously improve development processes and tooling to deliver reliable, scalable solutions.…

Available to hire

Hi there! I’m Marlon Alexis Manzano Reyes, a full-stack developer with hands-on experience building scalable web applications using the JavaScript ecosystem, including React, Node.js, and TypeScript. I excel at delivering robust, user-friendly features and collaborating across teams to meet business needs. I also explore AI-assisted development to accelerate workflows while maintaining code quality and architectural integrity.

I enjoy working with cross-functional teams to define technical requirements, design solid architectures, and ship production-ready features. I mentor teammates, standardize best practices, and continuously improve development processes and tooling to deliver reliable, scalable solutions.

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Skills

Experience Level

JavaScript
Expert
TypeScript
Expert
React JS
Expert
Node.js
Expert
HTML5
Expert
MySQL
Expert
Docker
Expert
PostgreSQL
Expert
MongoDB
Expert
GitHub
Expert
Express
Expert
Spring
Intermediate
AWS
Intermediate
Vue.js
Intermediate
Kubernetes
Intermediate
GraphQL
Intermediate
Google Cloud
Intermediate
React Native
Intermediate
PHP
Intermediate
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Language

Spanish; Castilian
Fluent
English
Advanced

Work Experience

LLM Trainer - (AI Training project) at Turing
January 1, 2025 - July 21, 2025
Built and optimized JavaScript, React, and TypeScript chart visualizations using Plotly, Highcharts, ECharts, and D3.js for AI-driven analytics and decision-making. Reviewed and improved AI-generated code across multiple stacks, increasing clarity and reliability. Collaborated with cross-functional teams to define and solve technical requirements. Mentored new trainers, standardizing best practices and evaluation criteria.
Software Development Specialist at National Treasury
January 1, 2024 - July 21, 2025
Implemented new features and validation mechanisms for the Sistema de Dictamen y Nombramiento Fiscal using Vue.js. Updated Oracle database structures and data to align with new business requirements. Added new entities, controllers, and services within the Spring Boot backend application.
Software Developer and IT Technician at FOPROLYD
December 31, 2022 - July 21, 2025
Developed multiple institutional applications using Javascript, PHP, MySql and Apache HTTP Server. Implemented the official public website following National Innovation Secretary guidelines using Wordpress. Provided comprehensive technical support for users, including hardware setup, network resources, and software configuration.
Full Stack Developer at Dito Bank
September 1, 2025 - Present
Built and maintained TypeScript/Node.js APIs (Express) and React applications; implemented authentication, business logic, and UI components for financial services, including card management, payments, and third-party integrations (KYC/KYB via Sumsub, BVNK, webhooks). Designed and optimized PostgreSQL schemas with Prisma, and implemented audit/tracking for financial transactions and user management. Collaborated with cross-functional teams and external providers.
LLM Trainer (AI Training project) at Turing
January 1, 2024 - January 1, 2025
Built and optimized JavaScript, React, and TypeScript visualizations for AI-driven analytics using Plotly, Highcharts, ECharts, and D3.js; reviewed and improved AI-generated code across multiple stacks; mentored new trainers and standardized best practices.
Software Developer and IT Technician
January 1, 2009 - January 1, 2022
Developed multiple institutional applications using JavaScript, PHP, MySQL and Apache HTTP Server; implemented the official public website following National Innovation Secretary guidelines using WordPress; provided comprehensive technical support for users, hardware setup, network resources, and software configuration.

Education

Bachelor's at University of El Salvador
January 1, 2001 - January 31, 2010
Bachelor's in Computer Systems Engineering at University of El Salvador
January 1, 2001 - January 1, 2010

Qualifications

JavaScript & React & TypeScript
January 1, 2001 - July 21, 2025
Backend (Node.js, Java, APIs)
January 1, 2001 - July 21, 2025
Databases
January 1, 2001 - July 21, 2025
Testing & Clean Code
January 11, 2030 - July 21, 2025
DevOps & Cloud, Docker
January 11, 2030 - July 21, 2025
AWS Fundamentals
January 11, 2030 - July 21, 2025
GitHub Actions
January 11, 2030 - July 21, 2025
UI/UX & Design, Professional Web Design
January 11, 2030 - July 21, 2025
Microservices Introduction
January 11, 2030 - July 21, 2025
JavaScript & React & TypeScript
January 11, 2030 - August 11, 2025
Back end (Node.js, Java, APIs)
January 11, 2030 - August 11, 2025
Databases
January 11, 2030 - August 11, 2025
Testing & Clean Code
January 11, 2030 - August 11, 2025
DevOps & Cloud, Docker (Udemy)
January 11, 2030 - August 11, 2025
AWS Fundamentals (Platzi)
January 11, 2030 - August 11, 2025
GitHub Actions (Udemy)
January 11, 2030 - August 11, 2025
UI/UX & Design, Professional Web Design (Udemy)
January 11, 2030 - August 11, 2025
Microservices Introduction
January 11, 2030 - August 11, 2025
JavaScript & React & TypeScript
January 11, 2030 - April 27, 2026
Udemy Backend (Node.js, Java, APIs)
January 11, 2030 - April 27, 2026
Platzi Data Bases
January 11, 2030 - April 27, 2026
UI/UX & Design
January 11, 2030 - April 27, 2026
Professional Web Design (Udemy)
January 11, 2030 - April 27, 2026

Industry Experience

Software & Internet, Government, Professional Services, Education
    paper https://gigranger.com

    A full-featured job portal application that allows recruiters to post and manage job listings, and job seekers to find, apply, and track job applications — with a seamless real-time chat system connecting them.

    This project showcases real-world, production-ready features such as:

    🔐 Authentication and role-based access

    📄 Resume uploads with automatic S3/local detection

    📬 Email notifications via RabbitMQ-based microservice

    🧠 AI-powered resume-to-job matching using Hugging Face

    🗂️ Application status tracking with history and comments

    🔎 Filtering, pagination, and admin-level CRUD operations

    💬 Live chat with offline message sync and unread badges

    🌐 Multilingual support with 10 languages via i18next

    The backend leverages a modular microservices architecture for improved scalability:

    Email notifications are offloaded to a dedicated RabbitMQ-powered email microservice.

    Resume-job matching is powered by a standalone LLM-based microservice, deployed securely and independently.

    These design choices decouple long-running or compute-heavy tasks from the main app, improving responsiveness and enabling future scalability.

    Check the repo here:
    https://www.twine.net/signin