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Luis – Python, React, AWS, experts in Lemon.io

Luis

From El Salvador (UTC-6)flag

Full-stack Web Developer|Senior
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Luis – Python, React, AWS

Luis is a seasoned Full-Stack Developer with over 10 years in the industry, specializing in Python and React. He has contributed to startups and enterprises, including eBay and Harvard Business Review, as well as integrated AI technologies such as the OpenAI API. Experienced in leading teams of up to 20 engineers and mentoring colleagues, while collaborating closely with product, data, and QA teams. Skilled at delivering end-to-end solutions and guiding technical decisions.

12 years of commercial experience in
AI
Data analytics
Healthcare
AI software
Video streaming software
Software development
Main technologies
Python
8 years
React
5 years
AWS
5 years
Typescript
7 years
Additional skills
GitHub Actions
Docker
Playwright
.NET
PostgreSQL
C#
REST API
Node.js
Databricks
FastAPI
ETL
AI
GitHub
Selenium
Swagger
MongoDB
Next.js
Docker Compose
AWS Lambda
Jenkins
Flask
Django REST
Snowflake
MySQL
Cursor
GPT
Direct hire
Possible
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Experience Highlights

Lead Technical Project Manager
Aug 2024 - Ongoing1 year 1 month
Project Overview

It's full-stack solutions for enterprise clients, including a broadcast television network and a healthcare company.

Responsibilities:
  • Built and maintained reusable React components and UI flows for client-facing dashboards.
  • Designed and integrated RESTful API services using Python and Node.js.
  • Improved data flow between front-end and back-end services for high-volume enterprise apps.
  • Implemented GitHub Actions and Docker-based CI/CD pipelines to accelerate deployment.
  • Collaborated with product, QA, and infra teams to shape architecture and ensure performance at scale.
  • Optimized key user journeys, contributing to reduced load times and improved stability.
Project Tech stack:
React
Python
C#
.NET
Typescript
Playwright
AWS
GitHub Actions
Docker
REST API
Node.js
PostgreSQL
Senior Lead Full-stack Developer
Apr 2023 - Jul 20241 year 3 months
Project Overview

It's an internal live tutoring platform that handles real-time scheduling, performance tracking, and reporting for thousands of students worldwide.

Responsibilities:
  • Developed responsive React components for live dashboards and instructor management tools.
  • Designed and implemented Python (FastAPI) back-end services for scheduling, data retrieval, and real-time updates.
  • Built ETL pipelines to collect and process session engagement data, storing results in PostgreSQL and AWS.
  • Integrated role-based access control and established clean API contracts between front-end and back-end.
  • Automated deployment and testing pipelines with Docker and GitHub Actions for faster iteration.
  • Collaborated with product and data teams to ensure platform scalability and low-latency performance during live sessions.
Project Tech stack:
React
Typescript
Python
FastAPI
PostgreSQL
AWS
Docker
GitHub
GitHub Actions
Databricks
ETL
C#
AI
Senior Full-stack Developer
Feb 2020 - Nov 20233 years 9 months
Project Overview

The projects involved full-stack development and automation initiatives for global clients, including a multinational e-commerce company and a leading magazine and platform focused on business management and leadership insights.

Responsibilities:
  • Designed and implemented scalable REST and GraphQL APIs to support high-traffic production systems.
  • Developed modular, reusable React components and dynamic user interfaces for complex dashboards and real-time data updates.
  • Integrated front-end components with back-end services to ensure seamless data exchange and robust error handling.
  • Implemented comprehensive logging, metrics, and error tracking to monitor and improve system reliability in production.
  • Led architectural design for new modules, including database schema planning and performance optimization.
  • Mentored junior engineers and conducted thorough code reviews to uphold engineering best practices and code quality.
  • Optimized database queries and indexing strategies to enhance application responsiveness and scalability.
  • Enhanced CI/CD pipelines to streamline builds, testing, and deployments, ensuring minimal downtime and faster delivery cycles.
Project Tech stack:
React
Typescript
Python
Node.js
Playwright
Selenium
Docker
GitHub
AWS
Docker Compose
.NET
AWS Lambda
Appium
GitHub Actions
Next.js
Java
MongoDB
PostgreSQL
Swagger
Senior Full-stack Developer & Data Engineer
Mar 2018 - Feb 20201 year 11 months
Project Overview

It's a large-scale data platform used to process and validate critical business information for enterprise clients.

Responsibilities:
  • Designed and implemented Python-based ETL pipelines for ingesting and transforming large datasets.
  • Built RESTful API endpoints with Flask to expose processed data to internal dashboards and external services.
  • Developed SQL queries, views, and stored procedures to support analytics and reporting at scale.
  • Integrated data pipelines with AWS services for storage, monitoring, and job orchestration.
  • Automated deployments with Jenkins and Docker, reducing manual intervention and downtime.
  • Supported internal React dashboards to visualize key operational metrics and system status.
  • Improved performance and reliability of critical data processing flows through indexing and query optimization.
Project Tech stack:
Python
Flask
ETL
PostgreSQL
AWS
Docker
Jenkins
Cloud Firestore
Django REST
React
Typescript
Databricks
AWS Lambda
Snowflake

Education

2022
Computer Science Engineering
Bachelor

Languages

English
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