Final answer:
Systems engineers design and manage software systems, quality assurance engineers ensure software quality, database engineers manage and optimize databases, and software engineers develop software applications.
Step-by-step explanation:
Systems engineer:
A systems engineer in the software industry is responsible for designing, implementing, and managing complex software systems that meet the needs of users and stakeholders. They work on the architecture and integration of different software components to ensure smooth functioning of the system.
Quality assurance engineer:
A quality assurance engineer is in charge of ensuring the quality and reliability of software products. They develop and execute test plans, identify and report bugs or issues, and work closely with software developers to resolve them.
Database engineer:
A database engineer focuses on managing and optimizing databases that store and retrieve large amounts of data for software applications. They design and implement database structures, ensure data integrity and security, and optimize query performance.
Software engineer:
A software engineer is involved in the entire software development lifecycle, including requirements analysis, design, coding, testing, deployment, and maintenance. They write code to create software applications and collaborate with other engineers to ensure the delivery of high-quality and efficient software.