* Higher education in Sciences: Chemistry, Pharmacy, Biology, etc. * Specialization in chromatographic techniques will be highly valued. * Training in ISO 17025 will be valued. **Experience:** * Proven experience of at least 2\-3 years in the routine use of analytical chromatography techniques, especially using triple mass spectrometry detectors. * Proven experience in the development of chromatographic analytical methods, particularly in the food and/or environmental fields. **Functions:** * Calibration and maintenance of chromatography equipment. * Routine sample analysis. * Quality control under ISO 17025 and system maintenance tasks. * Development and implementation of new chromatographic methods for food and/or environmental analysis. * Method validation. **Other requirements:** * Valid driver's license. * Mature and responsible person with high levels of initiative, proactivity, and self-management, eager to learn. * Advanced level of English will be valued.