Jr. Software Developer

I love create new software to make easy everything

Hi, I'm Keinner. Nice to meet you

I am a web developer with one year of experience in developing web applications. My focus is on designing responsive interfaces using ReactJS and Next.js. I have worked on projects ranging from landing pages to more complex applications. I am passionate about continuing to learn and grow in this field

  • Dev Skills

  • javascript
    Javascript
  • typescript
    Typescript
  • css
    CSS
  • tailwind
    Tailwind
  • react
    ReactJs
  • nextjs
    NextJs
  • postman
    Postman
  • mysql
    MySQL
  • mongodb
    MongoDB
  • github
    Github

My recent proyects

An app to create and manage notes and to-do lists

An app to create and manage notes and to-do lists

E-commerce about vintage clothes

E-commerce about vintage clothes

Experience

React Native Developer

Freelance 11/2025 - Present

  • Developed a mobile application for a points-based loyalty system.
  • Implemented the logic for accumulating and redeeming points when making purchases at associated stores.
  • Integrated the application with the stores' API for transaction validation and point balance updates.
  • Created an intuitive user interface for users to view their point history, participating stores, and available rewards.

AstroJs Developer

Personal Project 09/2025 - 10/2025

  • Developed a full-stack e-commerce platform for vintage clothing using AstroJs and Supabase.
  • Designed and implemented the Supabase backend, including defining the database schema (PostgreSQL) for products, orders, users, and inventory.
  • Configured and enforced Row Level Security (RLS) policies on all critical tables to ensure that users could only access and modify their own orders and data.
  • Integrated Supabase Authentication for secure user registration, login, and session management.
  • Built a dedicated administrative dashboard (web-based) allowing the client to manage product listings, process orders, track inventory, and view sales analytics.
  • Implemented secure image storage and retrieval using Supabase Storage for product photos.

Deep Learning

Personal Project 09/2025 - 10/2025

  • Conceptualized and developed a Deep Learning model using PyTorch for voice command model.
  • Curated and preprocessed a custom dataset of 30 voice files, ensuring data quality, consistency, and addressing class imbalance.
  • Implemented various data normalization and augmentation techniques standardization to improve model generalization and training stability.
  • Designed and trained a custom Convolutional Neural Network (CNN) architecture from scratch, leveraging PyTorch's `nn.Module` for maximum control.
  • Optimized model performance using advanced techniques, achieving an Specify Metric of X on the validation set, significantly outperforming benchmark models.
  • Managed the entire experimental lifecycle, including hyperparameter tuning, checkpointing, and visualization of training metrics using TensorBoard/Weights & Biases.

React Native Developer

Freelance 6/2025 - 8/2025

  • Developed a mobile app to manage foot deliveries for a SaaS company
  • The app includes an national payment gateway to process transactions
  • The app includes an inventory management system to track product stock

Web Development

Freelance 12/2024 - 01/2025

  • A payroll system was developed to calculate workers salaries
  • Registered workers and assigned performed services
  • Calculated payroll based on the services performed

Chatbot IA Development

ChatBot of mental clinic Ciate 10/2024 - 12/2024

  • Developed a project for a mental health company that includes a Telegram bot for recording consultations
  • Designed a landing page to promote their services and manage payments

Web Development

Freelance 12/2023 - 02/2024

  • Developed a website for a company that sells industrial safety products
  • The site includes an international payment gateway to process transactions
  • The site includes an inventory management system to track product stock