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# Full Stack Engineer

- **Company:** Aldren
- **Location:** Nava, Spain
- **Contract:** Permanent contract
- **Skills:** Query Performance, Application Programming Interfaces (APIs), Artificial Intelligence, Data Integrity, Large Language Models, Data Layers
- **Published:** September 28, 2026
- **Apply:** https://www.buscojobs.com.es/full-stack-engineer-en-nava-ID-372524143

## About the Role

What you'll do Build and own the core product interface - document viewers, annotation layers, review workflows Design and implement APIs that connect AI systems to the front-end in a reliable, low-latency way Own the data layer - schema design, query performance, and data integrity in a compliance-sensitive environment Work directly with customers to understand how they work and translate that into product decisions fast Strong opinions on what AI-native UX should look like What we're looking for Demonstrated experience shipping full-stack products end-to-end Product-minded - you think about the user experience, not just the implementation Shipped AI products (not exclusive to LLMs) - you don't need to build the models but you know how to build around them Ability to move fast without creating a mess you'll regret in six months Curiosity about hard, document-heavy domains with high accuracy requirements Experience in Pharma / Biotech a plus but, curiosity is more important Why
Aldren Work with a lean team with deep experience in Pharma, AI, and building from 0 to 1.
You will have a high level of ownership from day one and shape both the product and the business.
#J-*****-Ljbffr

## Description

About The Role You'll be an early engineer at Aldren, working directly with the founding team to build an AI-native product for regulatory teams in pharma and biotech.What you'll do Build and own the core product interface - document viewers, annotation layers, review workflows Design and implement APIs that connect AI systems to the front-end in a reliable, low-latency way Own the data layer - schema design, query performance, and data integrity in a compliance-sensitive environment Work directly with customers to understand how they work and translate that into product decisions fast Strong opinions on what AI-native UX should look like What we're looking for Demonstrated experience shipping full-stack products end-to-end Product-minded - you think about the user experience, not just the implementation Shipped AI products (not exclusive to LLMs) - you don't need to build the models but you know how to build around them Ability to move fast without creating a mess you'll regret in six months Curiosity about hard, document-heavy domains with high accuracy requirements Experience in Pharma / Biotech a plus but, curiosity is more important Why Aldren Work with a lean team with deep experience in Pharma, AI, and building from 0 to 1.You will have a high level of ownership from day one and shape both the product and the business.#J-*****-Ljbffr


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