I will develop a scalable full stack web application

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Mario Balan

About this gig

Are you looking for a standard freelancer, or a technical partner who actually understands your business goals?

A successful web application is more than just code,its a digital asset designed to generate revenue, streamline operations, and deliver a seamless user experience. I specialize in building high-performance, end-to-end web platforms that solve real business problems and scale effortlessly as your company grows.

What I Can Build For You:

  • Startups & SaaS MVPs: Turn your vision into a viable product. I build secure, fully functional platforms so you can validate your idea, attract investors, and onboard paying customers with confidence.
  • Internal Tools & Dashboards: Stop wrestling with clunky spreadsheets. I create custom, fast-loading dashboards that automate your daily workflows and centralize your data for clear decision-making.
  • Scalable Custom Platforms: When off-the-shelf software isn't enough, I engineer robust systems capable of handling complex business logic, secure data handling, and heavy user traffic.

I use modern, enterprise-grade technology to ensure your investment is fast, secure, and future-proof.

Please message me before ordering to discuss your exact projec

Get to know Mario Balan

Mario Balan

Full Stack Software Engineer and Backend Specialist

  • FromRomania
  • Member sinceJan 2026
  • Avg. response time1 hour
  • Languages

    Romanian, English
Full-stack engineer | Backend architecture & scalability. Scaled platforms to 25M+ users (CC). I build distributed backends, REST/WebSocket APIs, real-time systems & AI/LLM integrations—clean, secure, and built to grow. Java/Spring Boot · Node.js · Python/FastAPI · React/Next.js · PostgreSQL · Redis · OAuth/JWT New product or existing system—message me and let's ship something that lasts.

My Portfolio

Other Software Development Services I Offer