Amarildo Kociaj

Founder & Full Stack Developer

STEM Calculators • Autônomo

Sep 2025 - Present • 8 mos

As the founder and full stack developer of stemcalculators.app, I design, build, and maintain an interactive web platform that delivers fast, accurate STEM calculators and learning tools for students and educators. I develop the full product experience end-to-end, including the website architecture, backend logic, database integration, and responsive UI. I create structured, SEO-optimized content pages and implement technical SEO improvements to support indexing, canonicalization, and scalable growth. I also manage ongoing performance optimization, code quality, and feature releases, ensuring the platform remains reliable, accessible, and easy to use across devices.

Founder, Full Stack Developer & Science Content Writer

InformaTest • Autônomo

Aug 2025 - Present • 9 mos

As the founder and full stack developer of informatest.app, I design, build, and maintain a web platform focused on delivering clear, reliable educational content and tools. I manage the end-to-end development process, including site architecture, backend logic, database integration, and responsive front-end interfaces. In addition to development, I write and publish high-quality responses for chemistry and biology questions, ensuring explanations are accurate, well-structured, and easy to understand. I also handle on-page SEO and technical improvements to support discoverability, performance, and a smooth user experience across devices.

Content Manager and Chemistry Professor

Proprep Tech • Freelance

Feb 2022 - Feb 2026 • 4 yrs

As Content Manager and SEO at Proprep Tech proprep.com, I manage the "Ask a Question" project, overseeing student-submitted queries and ensuring timely, high-quality responses. I handle SEO strategy for chemistry, biochemistry, and biology content, optimizing it for maximum visibility and engagement. Additionally, I write and refine chemistry and biology content to meet academic standards, and I am responsible for video editing and improvement, enhancing instructional materials for clarity and impact.