A Micro Service Architecture developer builds and manages small, independent, and loosely coupled services, each performing a specific business function. They design, develop, test, and deploy these services independently, facilitating agile development and continuous integration. They often work with containers, cloud platforms, and DevOps tools to ensure scalability, resilience, and easy deployment. They also resolve issues, optimize performance, and ensure security. They collaborate with other teams to integrate these services, creating a cohesive system. Thus, they contribute to increasing business agility, accelerating time-to-market, and enhancing scalability and maintainability.