Open to opportunities

André Santos

@andrsantos3

I build maintainable full-stack web applications, APIs, integrations, and SaaS products.

I've built and maintained internal web applications at Samsung R&D using React, Material UI, PHP, Laravel, CodeIgniter, MySQL, and REST APIs.

At SimWorx Eng. P&D, I develop React/TypeScript and Python/Django applications with PostgreSQL, asynchronous Celery jobs, external integrations, PDF/DOCX reporting, automated tests, and SonarQube quality checks.

I also build CityZap independently: a full-stack SaaS CRM with customer and visit management, loyalty, analytics, JWT authentication, Asaas subscriptions and webhooks, Resend, CI/CD, Railway, and Vercel.

Experience

Work history, roles, and key accomplishments

Current

Junior Full Stack Developer

Current

SimWorx Eng. P&D

Oct 2025 - Present (1 year)

Full Stack development with React/TypeScript and Python/Django, building and maintaining APIs with PostgreSQL. Implemented PDF/DOCX report generation, scheduled and asynchronous jobs with Celery/Celery Beat, external API integrations, and automated tests.

React TypeScript Python Django PostgreSQL Celery CeleryBeat PDF DOCX REST APIs Testing Automation SonarQube Deployment

Software Developer Full Stack Intern

Samsung R&D

Jun 2023 - Jun 2025 (2 years)

Developed and maintained internal web applications using React, Material UI, PHP 8, Laravel, CodeIgniter and MySQL. Built and integrated REST APIs, implemented features, fixed bugs, and improved usability and performance.