Browse categories
Explore
Fiverr Pro
English
$
USD
I will develop scalable enterprise grade mobile apps in flutter or react native
Marcelo M
About this gig
Stop wasting time with apps that crash and won't scale. I am a Senior Software Engineer at Big Tech, specialized in building high-performance, enterprise-grade mobile ecosystems. I build production-ready apps using Flutter or React Native, ensuring your solution is secure, scalable, and maintainable.
What I deliver:
- Cross-Platform Apps: High-quality iOS & Android solutions from a single codebase.
- Clean Architecture: Implementation of SOLID principles & advanced State Management.
- Expert Integration: Seamless connection to complex REST, GraphQL, or gRPC backends.
- High Performance: Memory optimization, fast rendering, and smooth animations.
- Enterprise Standards: Code that is CI/CD ready for automated deployments.
Why me?
- Senior Big Tech XP: I apply the same scalability standards used at Mercado Livre.
- Robust Code: You receive well-documented, testable, and production-ready source code.
- Full-Stack Vision: 15+ years of expertise across mobile and high-scale backends.
Please contact me before ordering to discuss your project requirements!
Get to know Marcelo M
Marcelo M
Senior Software Engineer
- FromBrazil
- Member sinceAug 2026
Languages
English, Portuguese, Spanish
I am a Senior Software Engineer with over 15 years of experience designing and deploying scalable systems and robust cloud architectures using Go, Node.js, and Python. I have a proven track record in improving system performance and managing capacity for large-scale commercial events. I am a pioneer in applying Generative AI, LangChain, and autonomous agents to the SDLC, utilizing Specification-Driven Development to accelerate delivery and integrate reasoning with execution.
My Portfolio
FAQ
Should I choose Flutter or React Native for my app?
Both are excellent for cross-platform development. Flutter offers pixel-perfect, high-performance UIs, while React Native is great if you want to leverage a JavaScript-based ecosystem. Based on your project requirements, I will recommend the best framework to ensure the highest performance and scala
Will the app work perfectly on both iOS and Android?
Yes. By using Flutter or React Native, I develop a single, high-quality codebase that delivers a native-like experience on both iOS and Android. This ensures feature parity across platforms and significantly reduces future maintenance costs.
Do you handle the App Store and Google Play Store submission?
Yes, I can manage the entire submission process. While development is the core of the packages, I offer "App Submission" as a Gig Extra. I will guide you through setting up your developer accounts and handle all the technical requirements for the review process.
Do I own the source code and the intellectual property?
Absolutely. Upon completion and final payment, you have 100% ownership of the source code and all assets. I provide the code via a private repository, following the same enterprise-grade standards and documentation.
Can you integrate the app with my existing backend or third-party APIs?
Yes. As a Senior Full-Stack Engineer, I specialize in seamless integrations. Whether your backend is built in Go, Node.js, or Python, or if you need to connect to Firebase, AWS, or Stripe, I ensure a secure and high-performance connection between your app and your data.
How long does the store review process take?
Usually, Google Play takes 3-7 days and Apple App Store takes 2-4 days. While I can't control the stores' internal timelines, I ensure the app meets all technical guidelines to minimize the risk of rejection and speed up the process.
