I will audit, test and fix bugs, in your node js, python application before launch

Absolutely. I build websites from scratch—handling architecture, API design, security and scalability. I also refactor, optimize, and extend existing systems by improving performance, modularity, and maintainability.

Yes. I implement WebSockets for chat, notifications, and real-time updates, as well as asynchronous patterns using queues, cron jobs, and background workers for scalable operations.

I support robust authentication strategies including JWT for token-based auth and OAuth for third-party logins (e.g., Google, Facebook). I always secure endpoints with proper validation, encryption, and session handling.

Yes! I have hands-on experience integrating payment platforms like Stripe, messaging with Twilio, and a wide range of other third-party APIs to support the functionality your project needs.

I write modular, clean code optimized for performance. I follow best practices like indexing database queries, caching where needed, and designing stateless APIs that can scale horizontally—with support for clustering, load balancing, and cloud-native environments.

Absolutely. Every project includes clear API documentation (often using Swagger/OpenAPI) and automated unit and integration tests. I believe in delivering maintainable systems that developers (and your future self) can easily understand and extend.