Arnau Garriga Torné
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Arnau GarrigaData Engineer & Founding Sales Engineer, Barcelona

I turn complex AI into demos people get, and build what it takes to ship it.

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About

I'm a Data Engineer from Barcelona, with a BS in Data Engineering from Universitat Autònoma de Barcelona.

These days I'm the Founding Sales Engineer at Prosper AI, building custom demos and the capabilities that close deals.

I like sitting between customers and engineering: understanding the real problem, then shipping something fast to solve it. Build fast, fail fast, learn fast.

Aside from work, I've spent three years volunteering as a basketball coach. I speak Catalan, Spanish, English and some Portuguese.

Figurine of Arnau coding at a desk

Work Experience

Sep 2026 - Present

Founding Sales Engineer

Prosper AI Backed by $35M from a16z, Emergence and Y Combinator, Prosper AI builds voice AI agents that handle patient and payer calls for healthcare.

Founded and built the Sales Engineering function, with a repeatable demo process supporting 10 AEs at about four demos a day. Supported $1.5M in deal value through product demos, with $500K sold and progressing, and delivered 60+ custom demos tailored to specific customer requirements. Opened a median of two new product capabilities per week to close platform gaps, and originated two product paths that are now fully productized, generating over $300K in sales to date.

  • Sales Engineering
  • Custom Demos
  • Product Engineering
  • AI
Jan 2025 - Present

Technical Sales Engineer & AI Engineer

Aizon AI Backed by a $20M Series C led by NewVale Capital, Aizon builds AI software that optimizes pharmaceutical manufacturing.

Supported technical sales, product demos and demo-enabling tools for pharmaceutical clients. Contributed to AI-driven production optimization, automation tools and RAG systems.

  • RAG
  • Data Science
  • Automation
  • Pharma
  • Demos
Feb 2025 - Jan 2026

AI Consulting for SMEs

Freelance

Consulting for small and medium companies to integrate AI into their workflows. Built an HR chatbot on Microsoft Teams with RAG. Developed an email management platform with AI decision making. Created a document extraction pipeline cutting manual entry by 70%.

  • Python
  • RAG
  • Knowledge Graphs
  • Microsoft
  • LLMs
  • SLMs
Dec 2025 - Jan 2026

Livea - AI Ticketing System

Side Project

Built an AI-powered ticketing system for real estate managers with WhatsApp integration, automating customer service and making property management more efficient.

  • Python
  • LangChain
  • WhatsApp API
  • AI Agents
  • React
  • Nest.js
  • FastAPI
Sep 2024 - Dec 2024

Data Scientist & Product Automation Intern

Lawwing

Developed Python and SQL systems for lead generation and market analysis, including web scraping, PDF parsing and automated cron jobs on VMs.

  • Python
  • SQL
  • Web Scraping
  • PDF Parsing
  • Cron Jobs
  • VMs

Side Projects

View on GitHub

Chronic Disease AI Agent

Conversational AI agent for querying U.S. Chronic Disease Indicators in natural language, combining SQL and semantic search over PostgreSQL with pgvector.

  • Python
  • GPT-4o
  • LangGraph
  • PostgreSQL
  • pgvector
View on GitHub

NYC Taxi Rides Analysis

Big data spatial analysis of NYC taxi trips, with custom grid discretization and flow visualization in Kepler.gl.

  • PySpark
  • Big Data
  • Kepler.gl
  • Jupyter
View on GitHub

MNIST Distributed Training Analysis

Research and comparison of basic and distributed training of convolutional neural network models.

  • Python
  • CNNs
  • Distributed Training
Visit site View on GitHub

Satellite Tracker

Satellite tracker built with React, a simple end-to-end walkthrough of a basic React deployment.

  • React
  • Python
  • Deployment

Get a demo

Open to sales engineering, AI work and interesting problems. The fastest way to reach me is LinkedIn.