AI Engineer - Internship

About Valeria
Valeria is building the future of HR and payroll in Spain. We're an AI-native platform that automates contracts, payroll, and compliance for companies with high employee turnover (hospitality, delivery, events, agriculture). We're rethinking how an entire industry works—moving from manual, error-prone processes to intelligent automation.
We're a fast-growing startup backed by top investors, disrupting a €5B+ industry that's still stuck in spreadsheets and legacy software.

Valeria is an AI-native HR and payroll platform built for the way modern companies actually work. We automate the complex, compliance-heavy work that slows People teams down — so they can focus on what matters: their people.

What You'll Work On

As our AI Engineer Intern, you won't be watching from the sidelines — you'll be building real features that go into production and directly shape how HR teams experience AI.

AI & Document Intelligence

• Build and improve LLM-powered pipelines for HR document processing (contracts, payslips, policies)
• Work on extraction, classification, and structuring of unstructured HR data
• Experiment with prompt engineering and RAG approaches to improve accuracy and reliability

Backend & API Development

• Contribute to our Python (Flask) backend using clean architecture principles
• Build and maintain RESTful APIs and async job processing pipelines on Azure
• Work with PostgreSQL — designing schemas, writing queries, optimizing performance

Frontend & Product

• Contribute to our React / Next.js / TypeScript frontend — connecting AI features to user-facing experiences
• Collaborate closely with the product team to turn user needs into working features

Infrastructure & Observability

• Work within our Azure cloud environment and CI/CD pipelines via GitHub Actions
• Use Azure Monitor and Application Insights to understand how your features perform in production

⚙ Tech Stack

AI/ML — LLM integrations (OpenAI, Anthropic), Document processing, vector search

Backend — Python, Flask, clean architecture, async processing, webhooks

Database — PostgreSQL Frontend — React, Next.js, TypeScript

Cloud — Azure, GitHub Actions, Azure Monitor, Application Insights

What We're Looking For

Must-have

• Currently in your final year of a CS, AI, Data Science, or related degree — or recently graduated / finishing a Master's
• Solid Python fundamentals and genuine comfort working in a codebase you didn't write
• Hands-on experience or strong academic knowledge of LLMs, prompt engineering, or AI pipelines
• Ability to work independently: you don't wait to be told what to do next
• Good written English — our team communicates async and in English

The X-Factor

We're a small team — every person here has a real impact. Beyond skills, we look for:

• Genuine curiosity about AI
• Product intuition — you care about the user, not just the tech
• Low ego, high ownership — you're comfortable saying "I don't know" and figuring it out
• Startup mindset — you thrive with autonomy and are energized by ambiguity

What We Offer

• Paid internship

• Free lunch when you're at the office (thanks to Nora & Kombo)

• Real ownership from day one — you'll ship features that real users interact with

• Hybrid flexibility — based in Barcelona, async-friendly setup

• Direct mentorship — work alongside senior engineers and the founding team

• Front-row seat to AI in production — see your work go live and iterate on real feedback

The Process

1. Intro call (30 min) — we get to know each other and answer your questions
2. Team interview — meet the people you'd be working with day to day
3. Offer