I will be your full stack developer for website webapps code no code ai mvp apps pwa

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cristy_sainti
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cristy_sainti
Cristy Sainti

About this gig

Need a reliable full stack developer to build, fix, or improve your web application?

I can help you develop modern, scalable, and responsive web applications from frontend to backend.

Whether you need a complete application built from scratch, an existing website fixed, API integration, database setup, or new features added, I can help.


My full stack development services include:

  • Frontend development and responsive UI
  • Backend development and server-side functionality
  • REST API development and integration
  • Database design, setup, and optimization
  • User authentication and authorization
  • Admin dashboards and management systems
  • LLM integrations (OpenAI, Anthropic, open-source models)
  • AI agents, automated workflows, custom chatbots
  • RAG pipelines with vector databases
  • Full-stack apps (React/Next.js frontend, Node.js/Python backend)
  • Scalable databases (PostgreSQL, MongoDB) for high-traffic systems
  • Real-time architecture (WebSockets) for live data, dashboards, messaging
  • Docker containerization and CI/CD deployment (AWS, GCP, Azure)


Let's discuss your project parameters, user requirements, and technical tech-stack compatibility

Get to know Cristy Sainti

Cristy Sainti

Full stack AI engineering Backend Audit Security Deployment

  • FromNigeria
  • Member sinceAug 2026
  • Avg. response time1 hour
  • Languages

    English, Portuguese, German
I am A Full Stack Engineer with a team of Developers that set out focusing on building, improving, and maintaining modern web applications , working across both frontend and backend development, helping businesses and startups turn ideas into functional, responsive, and scalable digital products. Our services include full stack web development, frontend development, backend development, REST API integration, gaming devs,database development, authentication systems, payment integration, third-party APIs, dashboards, custom web applications, bug fixing, performance optimization, and deployment