The Laboratory Assistant will be responsible for supporting laboratory activities related to product analysis, quality control, and development. Their tasks include sample preparation, test execution, and technical recordkeeping, ensuring compliance with technical standards and internal quality requirements. **Analyses and Tests:** * Perform technical and mechanical tests on concrete, mortar, and production materials (cement, aggregates, admixtures, etc.); * Collect raw material and finished product samples in accordance with current technical standards; * Record and organize test results for analysis and archiving. **Quality Control:** * Assist in verifying product compliance with technical requirements and customer specifications; * Suggest adjustments to dosages and production procedures based on laboratory results, when necessary; * Monitor and record environmental conditions that may affect test results, such as temperature and humidity. **Equipment Operation:** * Operate, calibrate, and perform basic preventive maintenance on laboratory equipment, including precision compression machines, balances, sieves, among others; * Ensure laboratory environment organization, cleanliness, and equipment preservation. **Internal Support and Reporting:** * Provide technical support to the production team and operational departments; * Prepare technical reports and present test results to laboratory leadership and involved departments. **Standards and Procedures:** * Follow safety standards and use required personal protective equipment (PPE) for the role; * Ensure compliance with current technical standards, as specified by ABNT NBR for concrete and mortar.