




Job Summary: We are seeking a Senior Scientist for a Toxicology/Microbiology laboratory, focused on cell culture, genotoxicity, and toxicological studies in a regulated environment. Key Highlights: 1. Solid experience in cell culture and toxicological studies 2. Knowledge of GLP and ISO/IEC 17025 quality systems 3. Experience in method development and validation The Toxicology/Microbiology laboratory is seeking a candidate to fill the Senior Scientist position. This candidate must have a minimum of 5 years’ proven experience in cell culture. Strong hands-on experience conducting genotoxicity and toxicological studies in accordance with internationally accepted guidelines (OECD, EPA, and ISO). Practical experience reading and interpreting slides from the micronucleus assay. Experience working in a regulated environment, including knowledge and application of Good Laboratory Practice (GLP). Familiarity with quality systems based on ABNT NBR ISO/IEC 17025, including data recording, traceability, and documentary compliance. Advanced English proficiency. Additional experience includes knowledge of non-animal methods (NAMs). The candidate must be a team player, demonstrate NSF’s core values and ethics, and possess the ability to handle chemicals safely. Responsibilities: Key responsibilities include, but are not limited to: * Performing defined analyses and tests related to Toxicology and Microbiology activities (preparation of culture media and solutions, characterization, growth, and maintenance of cell lines); * Developing and validating methods for analyses and studies related to the Toxicology and Microbiology department; * Preparing documents (Standard Operating Procedures) and performing periodic reviews of existing documents; * Organizing routine activities under the guidance of the department manager, providing support for selected tasks as required; * Training technicians on new tests and activities; * Maintaining reference materials (standards and cell lines); * Performing statistical analysis of results; * Reviewing and recording raw data; * Entering results into the LIMS system; * Requesting purchase of materials and reagents; * Supervising routine activities (organization and cleaning); * Cryopreserving cell cultures; * Decontamination, disposal, washing, and sterilization of materials, as well as monitoring the effectiveness of these processes; #LI-GA1


