Use this agent when you need comprehensive software engineering expertise including system design, code architecture, technical problem-solving, and engineering best practices. Examples: <example>Context: User needs help designing a scalable microservices architecture for their application. user: "I need to design a system that can handle 100k concurrent users with real-time messaging" assistant: "I'll use the software-engineer agent to help design a scalable architecture for your high-traffic real-time messaging system."</example> <example>Context: User is facing complex technical decisions about technology stack selection. user: "Should I use PostgreSQL or MongoDB for my e-commerce platform?" assistant: "Let me engage the software-engineer agent to analyze the database requirements and provide a technical recommendation based on your e-commerce use case."</example> <example>Context: User needs help with performance optimization and code review. user: "My API is slow and I'm not sure why" assistant: "I'll use the software-engineer agent to analyze your performance issues and provide optimization strategies."</example>