Daniel López Azaña

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Modern Software Development

Build high-performance, scalable applications with cutting-edge technologies and best practices

Modern Software Development

Build production-ready software with modern technologies that deliver performance, reliability, and maintainability. I specialize in Rust systems programming for high-performance backends (Axum, Actix-Web, Leptos for full-stack), Python development with FastAPI and async frameworks, and full-stack web applications using Astro, Vue.js, React, and TypeScript. My code is clean, well-tested, and designed for long-term maintainability with comprehensive documentation and architectural decision records.

I architect microservices with event-driven architecture, REST APIs following OpenAPI standards, and GraphQL APIs for flexible data querying. My expertise includes WebAssembly (WASM) for browser-native high-performance applications, serverless architectures on AWS Lambda, and containerized deployments with Docker and Kubernetes. I implement domain-driven design (DDD), clean architecture, and SOLID principles to create maintainable codebases that scale with your business.

Whether you need a high-traffic API handling millions of requests, a real-time web application with WebSocket support, or a progressive web app (PWA) with offline capabilities, I deliver robust solutions. From MVP development to legacy system modernization, I combine technical excellence with business acumen to build software that drives results.

Rust Systems Programming

  • High-performance APIs with Axum, Actix-Web, Rocket
  • Full-stack Rust with Leptos, Dioxus, Yew for web applications
  • WebAssembly (WASM) for browser-native performance
  • Async/concurrent systems with Tokio, async-std

Python Backend Development

  • FastAPI for production-ready REST APIs with automatic OpenAPI docs
  • Django / Flask for full-featured web applications
  • Async frameworks (asyncio, aiohttp) for high concurrency
  • SQLAlchemy / Tortoise ORM for database abstraction

Full-Stack Web Development

  • Astro for content-focused, lightning-fast websites
  • Vue.js / Nuxt for reactive, modern web applications
  • React / Next.js for enterprise-grade SPAs
  • TypeScript for type-safe, maintainable codebases

API Design & Architecture

  • REST APIs with OpenAPI/Swagger documentation
  • GraphQL for flexible, efficient data querying
  • gRPC for microservice communication
  • Webhook systems for event-driven integrations

Microservices & Serverless

  • Event-driven architecture with message queues (RabbitMQ, Redis Pub/Sub)
  • AWS Lambda / Google Cloud Functions for serverless deployment
  • Service mesh (Istio, Linkerd) for microservice communication
  • API Gateway pattern for unified service access

Testing & Quality Assurance

  • Unit & integration testing (pytest, Jest, Vitest, cargo test)
  • E2E testing with Playwright, Cypress for frontend validation
  • Load testing (k6, Locust) for performance validation
  • CI/CD with automated testing pipelines

Modern Development Tools & Technologies

Backend Technologies

Rust Python Axum / Actix FastAPI Django Node.js Tokio / async-std SQLAlchemy Diesel / SeaORM

Frontend Technologies

Astro Vue.js / Nuxt React / Next.js TypeScript Tailwind CSS Leptos / Yew WebAssembly Vite / Webpack PWA

APIs & Protocols

REST / OpenAPI GraphQL gRPC / Protobuf WebSocket Webhooks SSE JSON-RPC OAuth2 / JWT

Testing & Tools

Pytest / cargo test Jest / Vitest Playwright Cypress k6 / Locust Docker Git / GitHub CI/CD

Business Impact of Modern Software Development

Build high-performance applications that handle millions of requests per day

Reduce time-to-market with rapid MVP development and iteration

Lower operational costs with efficient, scalable architectures

Ensure code quality with comprehensive testing and CI/CD pipelines

Modernize legacy systems without disrupting business operations

Create maintainable codebases that grow with your business

Get in touch

Let's discuss how I can help with your project