Senior Software Engineer with 25+ years building enterprise systems, document management platforms and process automation. Physicist by training, engineer by insistence.
Since 2023 I've been deliberately reorienting my craft toward AI Agents, LLM orchestration and agentic development workflows — combining a strong foundation in .NET / C# with Python and FastAPI on the backend. On the frontend I lean on React 19 + TypeScript for the apps I ship, while still leveling up the React side.
⚡ I build tools I use myself first: a personal Obsidian vault driven by Claude Code agents, dashboards on top of Garmin / Google Calendar / Proxmox, an investment tracker for my family, and several agent prototypes. Most of them live in this profile.
📍 Barcelona, Spain | 📆 Nov 2002 – Present
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🤖 AI Agents & Generative AI
- Building and shipping AI agents for enterprise document workflows using Claude Code, LangChain, LangGraph, CrewAI, n8n and Azure AI.
- MCP (Model Context Protocol) servers and clients for first-class agent integrations.
- Reliable LLM orchestration with OpenAI, Gemini and Anthropic SDKs.
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📄 Document & Data Platforms
- Lead developer on document management products in .NET (C# / WPF / WinForms) and SQL Server — currently porting the legacy stack to .NET 10 + FastAPI + React 19.
- Multi-tenant pipelines for digitization, indexing, OCR/ICR and barcode/PDF417 recognition.
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📊 AI / ML Projects
- Text classification and NLP for knowledge management.
- Industrial quality prediction with classical ML.
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🔗 Integration & Automation
- REST APIs with FastAPI and .NET Minimal API.
- RPA and integration glue with C#, Python and n8n.
📍 Barcelona, Spain | 📆 Dec 2000 – Nov 2002
- Enterprise applications in VB6, ASP (VBScript) and SQL Server.
- HR and payroll management systems with PowerBuilder.
📍 Barcelona, Spain | 📆 Oct 1999 – Dec 2000
- Business Intelligence solutions (VBA, SQL Server, OLAP).
- Data Warehouses and Data Marts.
- 🎓 Master’s in AI, Data Science & ML, Big Data — IEBS Business School (2022–2023)
- 🎓 Bachelor’s Degree in Physics — Universitat de Barcelona (1999)
- ✅ TensorFlow Developer Certificate (2024)
- ✅ AZ-900 Microsoft Azure Fundamentals
- ✅ AI-900 Azure AI Fundamentals
- ✅ PCEP-30-02 Python Entry-Level Programmer
- ✅ PCEP-31-03 Python Associate Programmer
- 🇪🇸 Spanish — Native
- 🏴 Catalan — Native
- 🇬🇧 English — Professional
💼 LinkedIn · 🌐 portfolio.nicolasbarcelo.dev · 📧 ferreret@gmail.com
⭐ Always open to collaborate on AI agents, LLM orchestration and enterprise automation projects.