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Hello, I’m David, a web developer specialized in Node.js with experience in system integrations and process optimization. I build scalable applications using JavaScript, Express, SQL, and modern front-end tools, delivering efficient and reliable solutions.…

David Zambrano

AI Developer, Back-End Developer, Database Developer, +6

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Hello, I’m David, a web developer specialized in Node.js with experience in system integrations and process optimization. I build scalable applications using JavaScript, Express, SQL, and modern front-end tools, delivering efficient and reliable solutions.…

Available to hire

Hello, I’m David, a web developer specialized in Node.js with experience in system integrations and process optimization. I build scalable applications using JavaScript, Express, SQL, and modern front-end tools, delivering efficient and reliable solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Spanish; Castilian

Fluent

Work Experience

Freelance Web Developer at Self-Employed / Freelance

August 1, 2024 - September 26, 2025

Contributed to the development of the company's intranet, building services such as location-based check-in integrated with Google services. Worked with Node.js, Express, SQL Server, JavaScript, CSS, and front-end technologies (JavaScript, Express, CSS, Bootstrap). Experience integrating third-party APIs (Google services), optimizing database queries, and deploying lightweight, scalable solutions for small business and personal projects.

Full Stack Developer (Junior) at Self-employed / Freelance

April 1, 2023 - September 26, 2025

Developed web applications using Node.js, Express, and SQL/NoSQL databases. Built scalable RESTful APIs and admin panels. Migrated manual processes to automated workflows, improving efficiency. Implemented front-end with React and Vue, using HTML/CSS for responsive interfaces. Managed hosting/deployment on AWS and Google Cloud and integrated external APIs. Optimized data models and queries for performance.

Full Stack Developer at Self-employed / Intranet Development for Empresa

August 1, 2024 - September 26, 2025

Led intranet development, creating services including advertising integration with Google services. Worked with Node.js, Express, SQL Server, JavaScript, and CSS. Focused on UI/UX, interface design, and process optimization to streamline internal workflows.