Mariano Testado

Available to hire

I’m a junior developer passionate about technology and always eager to keep learning.

About

I’m a junior developer passionate about technology and always eager to keep learning. I have experience with HTML, CSS, and JavaScript, and I’ve been improving my skills through freelance work, personal projects, and programs like The Odin Project. I enjoy solving problems, building applications, and collaborating with others. I’m currently seeking an opportunity to grow as a software engineer and contribute to real-world projects.

  • Joined March 2026

Industry experience

  • Software & Internet
  • Professional Services
  • Media & Entertainment

Projects · 2

Developed an AI-powered legal chatbot using Python, designed to assist users with general legal inquiries. Integrated external APIs (Groq and later OpenAI) to generate context-aware responses and enable more natural, dynamic conversations.

Implemented document processing capabilities, allowing the chatbot to read and analyze locally stored files (or server-hosted documents) to provide more accurate and context-specific answers.

Built input handling and conversational logic to manage different types of queries, focusing on clarity, usability, and response consistency. Structured the application with a modular approach to ensure scalability and ease of maintenance.

  • App Developer
  • Back-End Developer
  • Front-End Developer
  • +2

Built a Scrabble-inspired web application using React, focusing on interactive gameplay and state management. Developed core features such as randomized tile generation, word validation through a dictionary API, and dynamic board updates based on user input.

Implemented game logic for scoring, tile handling, and word placement, ensuring consistency between UI and internal state. Continuously improved the application by adding new features and refining the user experience, following a modular and scalable code approach.

  • App Developer
  • Back-End Developer
  • Front-End Developer
  • +1

Work experience· 4 roles

Web Developer · FreelanceJan 2023 – Jan 2026 · 3 yrs 1 mo

Developed web projects using HTML, CSS, JavaScript, React, TypeScript, and Node.js. Built responsive interfaces and optimized UX. Provided ongoing maintenance, debugging, and code improvements following best practices.

Full Stack JavaScript · The Odin ProjectJan 2022 – Jan 2023 · 1 yr 1 mo

Participated in full-stack JavaScript projects as part of The Odin Project.

Billing Manager · Universidad de LanusJan 2022 – Jan 2023 · 1 yr 1 mo

Oversaw full e-commerce operations and order processing. Issued electronic invoices and receipts for clients. Coordinated wholesale and retail order tracking.

Backend / Node.js · Talento TechJan 2020 – Jan 2025 · 5 yrs 1 mo

Certifications and awards

Bachelor’s Degree in Information Systems2030 – 2026
EF Set Certificate2030 – 2026

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