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# Full Stack Engineer

- **Company:** Aldren
- **Location:** Spain
- **Contract:** Permanent contract
- **Skills:** Query Performance, Application Programming Interfaces (APIs), Artificial Intelligence, Data Integrity, Large Language Models, Data Layers
- **Published:** August 9, 2026
- **Apply:** https://www.jobleads.com/es/job/e01a8183e88c8ecabf539551a4b166879

## About the Role

* 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, 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.

## Description

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., * 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


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