A platform engineer designs, builds, and maintains technology platforms and infrastructure to support software applications and services. They create and manage systems and tools enabling developers to build, deploy, and operate applications efficiently. Responsibilities include monitoring cloud systems, interpreting data, and assisting in building secure and performant cloud infrastructure. The role involves foundational knowledge of cloud concepts, software development, and applying basic principles in cloud platform engineering. The engineer collaborates with team members to improve technical skills and contribute to team objectives.