Josip Cubric
Zadar, Croatia
Josip Cubric
Backend Engineer | Python | Rust | Go
Category : Web development
I bridge the gap between rapid feature delivery and long-term system stability. Whether you need a scalable API in Python (FastAPI/Django), a high-concurrency microservice in Go, or a performance-critical module rewritten in Rust for maximum efficiency, I deliver production-ready code.
I don't just write scripts; I build infrastructure that scales.
I specialize in:
- Performance Optimization: Identifying bottlenecks in Python/JS and migrating critical paths to Go or Rust.
- Cloud-Native Backends: Robust API design and microservice architecture.
- System Integrity: Writing safe, concurrent, and memory-efficient code that reduces server costs.
I don't just write scripts; I build infrastructure that scales.
I specialize in:
- Performance Optimization: Identifying bottlenecks in Python/JS and migrating critical paths to Go or Rust.
- Cloud-Native Backends: Robust API design and microservice architecture.
- System Integrity: Writing safe, concurrent, and memory-efficient code that reduces server costs.
![Building the backend "plumbing" for AI-powered features. This isn't just a prompt; it's a robust Python system that manages data flows]()
Building the backend "plumbing" for AI-powered features. This isn't just a prompt; it's a robust Python system that manages data flows110 $ - Per hourI turn your raw business data into an AI-ready asset by building the specialized infrastructure required to run autonomous agents and intelligent workflows. What’s Included: * Asynchronous task p ...![A controlled, zero-downtime migration of critical business logic from legacy systems to a modern Go or Python environment]()
A controlled, zero-downtime migration of critical business logic from legacy systems to a modern Go or Python environment65 $ - Per hourModernize your stack without the risk of a total rewrite. I ensure your business keeps running while moving your core logic to a more secure, maintainable environment. What’s Included: * Audit of e ...![Identification of computational bottlenecks in existing codebases and rewriting them into high-performance Rust modules.]()
Identification of computational bottlenecks in existing codebases and rewriting them into high-performance Rust modules.100 $ - Per hourStop throwing more hardware at the problem. I rewrite your most expensive logic in Rust to slash execution time and infrastructure costs by up to 80%. What’s Included: * Performance profiling of your ...![High-Performance API & Microservice Development]()
Design and implementation of production-ready REST or gRPC APIs using FastAPI (Python) or Go. What’s Included: * Database schema design (PostgreSQL/Redis). Authentication and Authorization ( ...
- 🇬🇧 English
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