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gtodua/README.md

Hi there. πŸ‘‹

Senior Full Stack & AI Engineer | .NET, Python, React, AI Systems

I'm a senior full-stack engineer with 6+ years of experience designing and delivering enterprise-grade system across C#, .NET, Python, React, and modern AI infrastructure. My work focuses on reliability, scalability, and clean architecture-building systems that handle real workloads while staying maintainable and predictable.

I specialize in architecting distributed backend services, integrating AI/LLM capabilities into production systems, and improving performance in complex applications with high data throughput. I’m comfortable joining an existing codebase, modernizing legacy components, or designing greenfield services from scratch.

Technical Focus Areas β€’ Backend architecture with .NET (Web API, background services, workers, microservices) β€’ Python backend development with Django, Flask, FastAPI β€’ RAG pipelines, vector search, embeddings, retrieval optimization β€’ AI agents, tool orchestration, workflow automation β€’ Distributed systems design: queues, event buses, pub/sub, async processing β€’ React frontends for enterprise dashboards and internal platforms β€’ Cloud infrastructure on Azure/AWS with containerized deployments β€’ CI/CD pipelines, automated testing, observability, logging, and monitoring

Recent Engineering Work β€’ Architected a hybrid .NET + Python microservices platform for enterprise automation – Worker services, job schedulers, API gateway, service isolation – Designed for horizontal scaling, with metrics, traces, and error funnels – Reduced system downtime by 40% and improved throughput under load

β€’ Designed a production RAG system for internal document intelligence – Built retrieval pipeline using pgvector + semantic embeddings – Integrated Azure OpenAI for reasoning and summarization – Added caching layers, fallbacks, structured output validation, and monitoring – Achieved consistent, traceable, low-latency responses across millions of documents

β€’ Migrated legacy .NET Framework components to .NET 6 – Removed brittle dependencies, introduced proper layering and async patterns – Implemented automated tests and CI/CD for stable releases – Improved response time by 30% and made system maintainable for long-term growth

β€’ Built React interfaces for real-time analytics dashboards and operational tools – Role-based access, optimized API calls, state management, and UI performance

Engineering Strengths β€’ Clean architecture, modular design, SOLID, DDD-lite where appropriate β€’ High-quality code, performance profiling, and systematic debugging β€’ Strong understanding of data structures, concurrency, caching, and optimization β€’ Ability to quickly understand existing systems and improve them without disruption β€’ Clear communication around technical decisions, tradeoffs, and roadmap impacts

Stack Overview Backend: C#, .NET Core, ASP.NET, Python, Django, Flask, FastAPI Frontend: React, Next.js, TypeScript AI/ML: Azure OpenAI, OpenAI, Hugging Face, RAG, embeddings, vector stores Data: PostgreSQL, pgvector, SQL Server, Redis, MongoDB Cloud: Azure, AWS, Docker, Kubernetes (light), serverless DevOps: GitHub Actions, Azure DevOps, Docker CI/CD

If you need someone who can think at both the code and architecture level and can deliver stable, scalable, production-ready systems, I'd be glad to help your team move forward with confidence.

Languages and Tools:

Unix

Unix

Unix

Unix

Unix

Unix

Unix

Unix

Unix

JavaScript

React

Node.js

MySQL

MongoDB

Git

Visual Studio Code



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