I will build custom software with ai and API integrations

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Fernando S

About this gig

Need a custom web application, AI-powered feature, or API integration built around your specific needs?


If you already have an idea but are not sure about the technical architecture, feel free to message me. I can help you define the best way to build it.


I develop modern full stack software with a focus on clean architecture, responsive interfaces, scalable backend systems, databases, API integrations, and artificial intelligence.

I can help you build:

  • Custom web applications
  • AI-powered features and assistants
  • API integrations
  • Authentication and user systems
  • Firebase or Supabase backends
  • Databases and cloud-connected applications
  • Dashboards and internal tools
  • Intelligent workflows and automation
  • Existing project improvements and new features

I work with technologies such as TypeScript, JavaScript, Angular, React, Next.js, Node.js, Firebase, Supabase, REST APIs, and AI/LLM integrations.

I focus on building solutions that are functional, maintainable, and tailored to the actual problem instead of forcing every project into the same template.

Every project is different, so please contact me before ordering. can review your requirements and recommend the right approach and package.

Get to know Fernando S

Fernando S

Mechatronics Engineering Student

  • FromMexico
  • Member sinceSep 2026
  • Avg. response time1 hour
  • Languages

    English, Spanish, French
I enjoy building solutions that combine hardware and software to solve real-world problems. My experience includes mobile application development, AI-powered systems, automation, embedded systems, and full-stack software development. I am always looking for opportunities to learn new technologies and contribute to challenging engineering projects.