Quality Control Engineer Location: Barcelona (Hybrid) ***This is initially a Fixed Term Contract until the end of June 2026 - potential for extension/made permanent*** We are working with a company that focuses on accelerating AI adoption, data literacy, and engineering capabilities through a combination of expert-led human coaching and on-the-job learning. By partnering with over 1,500 organizations, they aim to create equitable access to economic opportunities while delivering measurable ROI for businesses. Responsibilities of the role: Ensure the reliability and performance of AI-driven client solutions, focusing on robustness and scalability. Collaborate across teams to define technical acceptance criteria and project requirements. Validate system quality under diverse conditions, ensuring data integrity and low-latency performance. Standardize quality control and reporting frameworks across all project portfolios. Requirements of the role: Master’s degree in Computer Science, Data Science, Software Engineering, or a related field. 2+ years of experience in software or ML project quality assurance, focusing on functional, performance, and automation testing. Demonstrated understanding of testing methodologies for AI/ML systems (e.G., reproducibility, model output validation, bias detection). Familiarity with modern ML and LLM workflows (Python, APIs, cloud ML platforms). Proficiency in English; Spanish or French is a plus.