1. Analyze the requirements, Design, develop, and Test software for complex projects. 2. Reviewing requirements, specification and technical design documents to provide timely and meaningful feedback. 3. Creating detailed, comprehensive and well-structured test plans and test cases. 4. Estimating, prioritizing, planning and coordinating testing activities. 5. Identify, record, document thoroughly and track bugs. 6. Perform thorough regression testing when bugs are resolved. 7. Develop and apply testing process for new and existing products to meet client needs. 8. Monitor debugging process results. 9. Track quality assurance metrics, like defect densities and open defect counts.