I will develop full stack applications

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J
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Joel Z
develop full stack applications
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develop full stack applications
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develop full stack applicationsdevelop full stack applicationsdevelop full stack applications

About this gig

Hi! I'm Joel, a full stack developer who builds complete, working applications from idea to deployment.


Need a simple MVP, a web app, a SaaS dashboard, or a full product with backend and database? I build it end to end.


WHAT I CAN BUILD:

Full stack web applications

MVPs and prototypes to validate your idea

Admin dashboards and internal tools

REST APIs and backend systems

Authentication and databases

AI / LLM feature integration (Gemini, Groq)


TECH STACK:

Frontend: React, TypeScript, JavaScript

Backend: Node.js, Spring Boot (Java)

Databases: MySQL, MongoDB

Extras: Stripe payments, third-party APIs, deployment


WHAT YOU GET:

Clean, well-structured code

Fully responsive design

Full source code ownership

Clear communication and on-time delivery


I treat every project like my own product properly built and ready for real users.


Message me before ordering so I can understand your project and recommend the best package.

  • Programming language

    • Java

  • Expertise

    • Algorithms & Data structures
    • Performance
    • Design
    • Source control
    • Testing procedures

  • Frontend framework

    • Bootstrap
    • Flutter
    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • Next.js
    • Node.js
    • Spring

  • AI & low/no code builders

    • Other

Get to know Joel Z

Joel Z

FullStack Developer

  • FromSpain
  • Member sinceJun 2026

  • Languages

    Spanish, Catalan, English, Chinese
I am a developer recently graduated in Cross-Platform Application Development with a strong focus on full-stack and web development. I have experience building complete projects from scratch, including gym management ERPs and real-time music apps. I specialize in integrating AI agent systems using Node.js, Google Gemini, and Groq into service-oriented architectures.

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