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Ing. Nicolas Raffa Pirra

Senior Generative AI Engineer | LLM Systems · RAG · Multi-Agent Architect
Remote 🌍 Email: nraffapirra@besolvit.com | LinkedIn

Senior Generative AI Engineer and consultant delivering production LLM systems using Python, LangChain/LlamaIndex, RAG and multi-agent patterns. Hands-on in prompt engineering, fine-tuning, vector DBs and cloud AI services, built scalable prototypes to client deployment with clear technical communication.

Areas of Expertise

Frontend and Backend: React, React Native, TypeScript/JavaScript, Python, FastAPI (REST APIs), Pydantic
Database: PostgreSQL, MongoDB/Atlas, DynamoDB, Aurora
Cloud & DevOps: GCP, AWS, Azure, Terraform, Pulumi, Docker, Github Actions, CI/CD
GenAI & Conversational AI: Langchain, Langgraph, RAG Pipelines, Multi-Agentic Systems, LLMs, VLMs, Prompt Engineering, Chatbots, Langfuse, Langserve, MCP, Fine-Tuning
Data Science: EDA, classical ML, Recommendation Systems, Deep Learning

Professional Experience

The World Bank @ Sr Full Stack AI Engineer | Consultant (Oct 2025 – Present)
Remote, Argentina

Consultant for The World Bank, working with Tabiya core dev team to implement Compass, their AI Conversational Agent for Personalized Skill Discovery in Argentina for local NGOs.
Compass is a generative AI agent designed to engage users in exploratory conversations to gather information and identify their unique skills, focusing on abilities over credentials, including informal and unpaid work.

Five1 GmbH @ Sr Full Stack AI Engineer | GenAI Technical Lead | Consultant (Feb 2024 – Oct 2025)
Remote, Germany

Developed and deployed multilingual RAG architectures and multi-agent GenAI applications for enterprise clients using LangChain, LangGraph, and vector databases, ensuring scalability and production readiness.
Led workshops with non-technical stakeholders to identify AI adoption opportunities, leading to project acquisitions.
Contributed to explainable GenAI applications across regulated sectors.

Masterschool @ AI Role Mentor (Mar 2025 – Present)
Remote

Mentored students on GenAI projects, ensuring timely delivery, code quality, and job readiness.
Prepared candidates for technical and behavioral interviews to bridge into industry roles.

Solvit @ AI Full Stack Engineer | Freelance (Nov 2023 – Present)
Remote

Provided consultancy and software development services with a special focus on AI.
Built AInvoice: invoice-processing service handling varied formats with VLM + LLM pipelines, improving extraction accuracy.
Built ArchiLeads: AI assistants for WhatsApp integrating with CRMs to expand access for small businesses.

Check24 GmbH @ Data Engineer | Data Scientist | Frontend Developer (Jun 2022 – Nov 2023)
Munich, Germany

Created a prediction model for financial strength of customers increasing conversion.
Built recommender systems for personalized product ranking.
Developed frontend features for an internal custom agent tool.

Wabi Project @ BI Manager | B2B Product Owner (May 2021 – May 2022)
Buenos Aires, Argentina

Automated data analysis reports with Apache Airflow on fraud detection, revenue, and marketing KPIs.
Prioritized features and managed stakeholders in a development team for a B2B digital grocery shopping platform.

Education

Technological Institute of Buenos Aires (ITBA) @ Master in Industrial Engineering (Mar 2015 – Dec 2020)

AWS @ Cloud Practitioner (Mar 2024)

Projects

RAG Based Whatsapp Chatbot (E-commerce) @ GenAI Engineer (2024)

Automated Q&A for WhatsApp channel based on provided documents using lightweight RAG chatbot supporting multiple languages.
Infrastructure done in Terraform and deployed on AWS, orchestration with Langgraph.
Live demo (WhatsApp): wa.me

Archilo: Automated Invoice Processing Solution @ Co-Founder (2023 – Present)

GenAI application using LLMs, VLMs, and Agents for flexible invoice processing with accurate data extraction.
Built under Solvit — product site: archilo.besolvit.com.

BPMN Generation Tool (Process Management) @ GenAI Engineer (2024)

Automated invoice processing application leveraging LLMs, VLMs, and Agents for various invoice formats.

Reusable RAG Template Application (Energy | Regulatory Sector) @ GenAI Engineer (2024)

Developed reusable RAG template for document indexing and semantic querying.
Automated change detection in regulatory documents year-over-year to improve review time and reduce manual work.

Solar Panel Installation Analysis Tool (Energy Sector) @ GenAI Engineer (2024)

Developed an analysis tool automating schematic review of solar installations using VLMs and OCR to detect and interpret electrical schematics.

Solidariamente

Buenos Aires, Argentina
Project Analyst
September 2021 – December 2021
Optimized processes and organization for an NGO providing school supplies to children.

Sumando - Domingo Savio School (La Cava)

Buenos Aires, Argentina
Student Tutor | Tutor Management
August 2018 – December 2021
Participated in student support organization aimed at preventing school dropout.

Techo para mi Pais

Buenos Aires, Argentina
Construction Worker (Volunteer)
Participated in building houses for families in need.

**Solvit

Tailored AI Solutions**