Quality Control Engineer – AI & LLM Services ¿No sabe con seguridad qué habilidades necesitará para esta ocasión? Simplemente lea la descripción completa a continuación para obtener una idea clara de los requisitos del candidato. Barcelona | Hybrid | Fixed-term contract (to June 2026) Want to be on the front line of real-world AI quality, validating systems that power next-generation LLMs, chatbots, and AI services used globally? A fast-scaling European deep-tech company at the intersection of AI and advanced computing is hiring a Quality Control Engineer to ensure the reliability, performance, and robustness of cutting-edge AI products. This role is actively hiring with a fast, transparent interview process. Why this role stands out
* Work on AI technology that dramatically reduces model size and inference cost
* Direct impact on production LLM systems used by enterprise clients
* Join a Series‐B‐stage deep‐tech company with strong international backing

What you'll do
* Own quality validation for AI & LLM‐based applications (chatbots, RAG, APIs, data pipelines)
* Define acceptance criteria with engineers, product teams & clients
* Test scalability, latency,



robustness & data integrity under real‐world conditions
* Build and standardize QA frameworks across AI projects
* Design manual & automated test suites for ML/LLM workflows
* Ensure final deliveries meet both technical and functional excellence standards What you bring
* Master's degree in CS, Data Science, Software Engineering (or related)
* 2+ years in QA for software, ML or AI systems
* Understanding of AI/ML testing challenges (reproducibility, output validation, bias)
* Familiarity with Python, APIs & modern ML/LLM workflows
* Fluent English (Spanish or French a plus) What's on offer
* Signing bonus xqysrnh and retention bonus
* Hybrid working & flexible hours
* Relocation support (if needed)
* International, multicultural tech environment If you're passionate about making AI trustworthy, scalable, and production‐ready, this is a rare chance to do it at the cutting edge. Seniority level
* Mid‐Senior level Employment type
* Contract Job function
* Information Technology Industries
* Software Development

📌 Quality Control Engineer (Barcelona)
🏢 DeepRec.ai
📍 Barcelona