AI/ML Engineer

Description

Job Summary: We are seeking an AI/ML Engineer to build and ship AI-powered features, focusing on the reliability, observability, and usefulness of LLMs. Key Highlights: 1. Build and ship AI-powered features with real daily usage. 2. Design and build LLM pipelines using LangChain and LangSmith. 3. Collaborate closely with product and engineering to deliver end-to-end features. **Job Description** -------------------------- **About the Role** We are looking for an **AI/ML Engineer** with experience to join our **team in Spain**. **This is not a research role.** You will build and ship AI-powered features with real daily usage, including intelligent candidate screening, matching, and interview automation. We seek someone who has taken LLMs to production and knows how to make them **reliable, observable, and useful**. **Hybrid work in the Madrid or Barcelona area (Spain).** **What You Will Do** * Design and build LLM pipelines using LangChain and LangSmith * Integrate and optimize API calls to OpenAI, Anthropic, and Hugging Face models * Build and maintain data pipelines for training, evaluation, and inference * Monitor and improve production performance with structured evals and traces * Apply AI engineering best practices across the full cycle: from prompt design to deployment * Collaborate closely with product and engineering to deliver end-to-end features **What We Are Looking For** * **3+ years** of experience in AI/ML engineering * Strong experience with LLMs and generative AI deployed to real users * Proficiency in LangChain and LangSmith for pipelines and observability * Experience with OpenAI and/or Anthropic APIs * Familiarity with the Hugging Face ecosystem * Solid understanding of data pipeline design * Deep knowledge of AI engineering principles: if you’ve read *AI Engineering* by Chip Huyen, you’ll feel right at home * **Claude certification is a plus** * **Reside in the Madrid or Barcelona area, or be willing to relocate to Spain** **Salary:** **€8,000–€10,000 gross/month**