Adrián Sacristán Ibáñez · London

I build AI systems and lead the teams behind them.

Here I write about technology, business and management.

Currently Tech Lead for the UK Government.

Adrián Sacristán, AI Engineer and Tech Lead
UK Government
Coinbase
British Airways
Banco Santander
BBVA

Blog

Essays on technology, business, and management. The first three are still drafts.

Draft

What production asks of an AI system

Coming soon

Draft

Leading a team when the work is still ambiguous

Coming soon

Draft

The bottleneck is rarely the model

Coming soon

All posts

Recommendations (12)

On LinkedIn

Ash Nouruzi Ash Nouruzi Internal tools and DevRel ·

A pleasure working on ListingOS, where agents and human-in-the-loop processes helped the legal team move faster and uncover more in less time.

Andrei Osminskii Andrei Osminskii AI Engineer ·

A key role in designing and delivering production AI, including ListingOS. Deep expertise in LLMs, RAG pipelines, and agentic architectures, and a pragmatic approach to reliable, secure systems.

Yifan Xu Yifan Xu AI Research ·

Thoughtful, reliable, and highly capable, with strong technical judgment and clear communication. He combines ownership with humility and moves the work forward in a practical way.

Maia Numerosky Maia Numerosky Machine Learning Engineer ·

A motivating leader at British Airways, eager to learn the product end to end, with strong technical skills and a supportive, caring way with coworkers.

Txema Bermudez Txema Bermudez Senior Backend Engineer ·

An exceptional technical lead, from React and FastAPI to data engineering with Dagster, whose advice is grounded, constructive, and forward-thinking.

Alesja Gilvear Alesja Gilvear Digital Product and Delivery Manager · Playbrush

Together we completed one of the most successful features in the Playbrush app. Skilled, with a broad range of abilities and a lot of passion for the craft.

José Enrique Narváez Gago José Enrique Narváez Gago Founding Engineer ·

Commitment, a rapid learning curve, and strong teamwork. I recommend him, and I would be open to working with him again.

Serena Olivieri Serena Olivieri Software Developer ·

Incredibly helpful and supportive in critical moments, quick and optimistic, with a knack for making challenging tasks seem easy.

Marina Martín Hernández Marina Martín Hernández Project Manager ·

A born leader, with unmatched problem-solving skills and exceptional charisma. We built infrastructure and architecture in Python using FastAPI.

Borja Fernández Borja Fernández UX/UI Designer ·

My tech lead. His communication was a compass for the team, and he trusted people to organise their time around the work.

Maryna Skyba Maryna Skyba Full-stack Developer ·

A natural leader who shares his knowledge and helps colleagues. Creative, dedicated, and hardworking.

Andres Sanchez Contract Business Analyst / Project Manager ·

A gift for marrying technical expertise with project experience, at home in a technical role (Python) or a project role (BA/PM).

A conversation, when it is useful

About a system, a team, or something I have written. Speaking and advisory sit alongside the essays, not in front of them.