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I am a full stack Software Engineer with solid experience in delivering web applications utilizing React, TypeScript, Python, and cloud-based APIs. I bring a strong foundation in C++, with a rapid adaptability to large codebases, focusing on improving system efficiency and user experience through performance optimizations and UX improvements. I am comfortable working in distributed teams with Git workflows, reading technical specifications, and debugging cross-browser behaviors. My motivation lies in advancing standards correctness, DOM performance, and improving user interaction in Mozilla's Gecko engine.…I am a full stack Software Engineer with solid experience in delivering web applications utilizing React, TypeScript, Python, and cloud-based APIs. I bring a strong foundation in C++, with a rapid adaptability to large codebases, focusing on improving system efficiency and user experience through performance optimizations and UX improvements. I am comfortable working in distributed teams with Git workflows, reading technical specifications, and debugging cross-browser behaviors. My motivation lies in advancing standards correctness, DOM performance, and improving user interaction in Mozilla's Gecko engine.

Ernesto Donado

Full Stack Developer, Web Developer, Programmer

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I am a full stack Software Engineer with solid experience in delivering web applications utilizing React, TypeScript, Python, and cloud-based APIs. I bring a strong foundation in C++, with a rapid adaptability to large codebases, focusing on improving system efficiency and user experience through performance optimizations and UX improvements. I am comfortable working in distributed teams with Git workflows, reading technical specifications, and debugging cross-browser behaviors. My motivation lies in advancing standards correctness, DOM performance, and improving user interaction in Mozilla's Gecko engine.…I am a full stack Software Engineer with solid experience in delivering web applications utilizing React, TypeScript, Python, and cloud-based APIs. I bring a strong foundation in C++, with a rapid adaptability to large codebases, focusing on improving system efficiency and user experience through performance optimizations and UX improvements. I am comfortable working in distributed teams with Git workflows, reading technical specifications, and debugging cross-browser behaviors. My motivation lies in advancing standards correctness, DOM performance, and improving user interaction in Mozilla's Gecko engine.

Available to hire

I am a full stack Software Engineer with solid experience in delivering web applications utilizing React, TypeScript, Python, and cloud-based APIs. I bring a strong foundation in C++, with a rapid adaptability to large codebases, focusing on improving system efficiency and user experience through performance optimizations and UX improvements.

I am comfortable working in distributed teams with Git workflows, reading technical specifications, and debugging cross-browser behaviors. My motivation lies in advancing standards correctness, DOM performance, and improving user interaction in Mozilla’s Gecko engine.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Software Engineer at PDVSA

November 1, 2023 - August 31, 2025

Developed Python Django and SQL Server services to automate internal operations reporting pipelines, increasing efficiency by approximately 75%. Normalized legacy data into relational database schemas improving data integrity and enhancing query performance for analytic dashboards. Profiled API performance and reduced runtimes of heavy reports through query tuning and serialization optimizations. Collaborated effectively across distributed teams using GitHub pull requests, issue tracking, and Agile iterative specifications.

Full Stack Developer at Monitoring Systems

January 31, 2023 - August 31, 2025

Delivered responsive features using React and TypeScript integrated with REST APIs for real-time operational data. Conducted JavaScript and DOM performance profiling using browser developer tools; improved page load times by approximately 40% with code splitting and lazy loading techniques. Optimized event-to-response latency by batching DOM updates, improving user experience significantly in low-bandwidth regions. Addressed Firefox and Chromium clipboard/event differences by reproducing defects, filing issues, validating fixes, and deploying patches to enhance field user compatibility. Streamlined in-app workflows lowering inbound technical support by roughly 30% through UX and error-state enhancements.