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Máximo Fernández Núñez

@mximofernndeznez

AI Agent Engineer | LangGraph, RAG, Python/FastAPI | Production ML since 2017, computer vision & edge AI | Madrid, remote

Spain

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What I'm looking for

Seeking remote technical IC roles in AI agents, LangGraph, RAG and Python/FastAPI. Interested in renewable energy, robotics and edge AI. Based in Madrid, with occasional offsites.

At Unusuals, I was the sole engineer behind a production inspection assistant for Spain’s national grid operator, REE. I redesigned its single-step routing into a multi-step ReAct agent that could resolve multi-region requests across millions of high-voltage pylon photos, and added LangSmith tracing that made failures reproducible in seconds.

Before that, I built generative AI systems as a freelancer and worked on computer vision and embedded AI at Sener Aeroespacial, Arquimea, and Indra. My work has ranged from an autonomous vehicle perception stack and UAV hardware to on-device agents; I also write about AI at maximofn.com.

Experience

Work history, roles, and key accomplishments

AI Agent Engineer

Unusuals

Jan 2026 - Jul 2026 (6 months)

Sole engineer behind an inspection assistant agent for Spain's national grid operator, enabling field technicians to query millions of high-voltage pylon photos by region and defect type. Redesigned architecture to a multi-step ReAct loop over ~10 tools, added multi-provider LLM routing with failover, LangSmith tracing, and per-user memory.

LLM Agents React Langsmith OpenAI Mistral OpenRouter Prompt Caching Microsoft Teams S3 Vision Email Reporting

Generative AI Engineer

Freelance

Dec 2024 - Jan 2026 (1 year 1 month)

Delivered a multi-agent tutoring system for Turing Dream used by secondary-school students in Spain and Colombia, and built a voice agent for kitchen staff at CIVIR. Owned backend, frontend, and deployment of the agent side, with direct client requirements gathering.

Multi Agent Systems RAG Chatbot Voice Agents Streaming Stts Backend Development Frontend Development Deployment

AI Tech Lead

Bravent

Sep 2024 - Nov 2024 (2 months)

Provided technical leadership on a generative-AI initiative on Azure, covering architecture, technology selection, and risk assessment. The programme was halted by the client.

Azure Generative AI Architecture Technology Selection Risk Assessment

Machine Learning Engineer

Sener Aeroespacial

Sep 2022 - Sep 2024 (2 years)

Built the perception stack for an autonomous ground vehicle in a European defence consortium, optimizing inference with TensorRT on NVIDIA AGX Orin. Created training datasets and an annotation tool, and mentored interns and junior engineers.

Computer Vision Segmentation Classification Détection Depth Estimation TensorRT NVIDIA AGX Orin Dataset Creation Annotation Tools Mentorship

Machine Learning & Embedded Engineer

Arquimea

Oct 2017 - Jul 2022 (4 years 9 months)

Proposed and delivered a single hardware platform with shared firmware across 3 UAV models, and replaced a commercial object-detection module with an in-house YOLO detector. Designed schematics, PCBs, and programmed microcontrollers for UAV flight control, and prototyped GPS-denied geolocation.

Embedded Systems PCB Design Firmware YOLO Object Detection UAV Microcontrollers GPS Geolocation Deep Learning

Electronic Engineer

Indra

Jan 2013 - Oct 2017 (4 years 9 months)

Designed control PCBs and firmware for an autonomous helicopter programme for the Spanish Ministry of Defence.

PCB Design Firmware Control Systems Autonomous Helicopter

Education

Degrees, certifications, and relevant coursework

Universidad Complutense de Madrid

Ingeniero en Electrónica (Master-equivalent, pre-Bologna), Electronic Engineering

2005 - 2011

Grade: Honors in several subjects

Ingeniero en Electrónica, September 2005–June 2011. Pre-Bologna higher engineering degree equivalent to Bachelor plus Master level, confirmed by the degree holder. Honors in Systems Control, Robotics, Introduction to Semiconductors, Computer Architecture and the Final Degree Project.