Quality Control Engineer – AI & LLM ServicesBarcelona | 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 outWork on AI technology that dramatically reduces model size and inference costDirect impact on production LLM systems used by enterprise clientsJoin a Series‑B‑stage deep‑tech company with strong international backingWhat you’ll doOwn quality validation for AI & LLM‑based applications (chatbots, RAG, APIs, data pipelines)Define acceptance criteria with engineers, product teams & clientsTest scalability, latency,



robustness & data integrity under real‑world conditionsBuild and standardize QA frameworks across AI projectsDesign manual & automated test suites for ML/LLM workflowsEnsure final deliveries meet both technical and functional excellence standardsWhat you bringMaster’s degree in CS, Data Science, Software Engineering (or related)2+ years in QA for software, ML or AI systemsUnderstanding of AI/ML testing challenges (reproducibility, output validation, bias)Familiarity with Python, APIs & modern ML/LLM workflowsFluent English (Spanish or French a plus)What’s on offerSigning bonus and retention bonusHybrid working & versátil hoursRelocation support (if needed)International, multicultural tech environmentIf you’re passionate about making AI trustworthy, scalable, and production‑ready, this is a rare chance to do it at the cutting edge.Seniority levelMid‑Senior levelEmployment typeContractJob functionInformation TechnologyIndustriesSoftware Development

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