Adrià Guilera Bernabé
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Adrià GuileraAI Software Engineer, Barcelona

I make AI take care of the boring stuff, so humans can focus on what really matters.

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Waving figurine of Adrià saying hello

About

I'm a passionate AI Software Engineer from Barcelona, with a BS in Software Engineering from FIB UPC.

These days I work on AI platform assistants, AI text agents and real-time voice agents.

I'm drawn to startups focused on real-world problems, shipping simple things that work rather than overengineering, and to going deep on AI systems that hold up in production.

Aside from coding and building, I enjoy going to the gym, spending time with friends and family and going fishing whenever the weather allows it.

Figurine of Adrià studying

Work Experience

Apr 2026 - Present

AI Software Engineer

Spoki

Moved all AI inference to EU-resident Gemini on Vertex for GDPR, adding benchmarks so agent quality holds across model updates. Migrated Milvus vector search and built the document ingestion pipeline. Built the platform's AI assistant, and improved and developed the voice agents on LiveKit, cutting latency from ~1s to 600ms. Created MCP servers and a Skills repository covering the company stack.

  • Python
  • Go
  • Gemini on Vertex
  • LangGraph
  • Milvus
  • RAG
  • LiveKit
  • MCP
Feb 2024 - Apr 2026

Junior FullStack Developer

K·Factor Technologies

Introduced AI to the company as its sole owner, with no prior AI product. Built multi-tenant AI agents using Python and LangChain ecosystem. Developed and maintained Nest.js backends and Flutter mobile apps. Implemented RAG systems and SQL agents for intelligent document retrieval and database querying using LLMs.

  • Python
  • LangChain
  • Nest.js
  • Flutter
  • RAG
  • SQL Agents
  • PostgreSQL
Feb 2025 - Apr 2026

AI Consulting for SMEs

Freelance

Consulting for small and medium companies to integrate AI into workflows. Built HR chatbot on Microsoft Teams with RAG architecture. Developed email management platform with AI-powered sorting. Created document extraction pipeline reducing manual entry by 70%.

  • Python
  • RAG
  • Microsoft Teams
  • LLMs

Get in touch

Open to AI engineering work and interesting problems. The fastest way to reach me is email.