Optimize backend performance by improving API responsiveness, refining database queries, and enhancing caching strategies. Design scalable backend architectures and influence long-term technical direction across multiple products and services. Implement high-quality, maintainable code with strong test coverage and adherence to best practices. Refactor legacy components into clean, modular, and future-ready services that accelerate development. Collaborate closely with frontend, mobile, DevOps, and product teams to ensure smooth execution of cross-functional projects. Lead technical discussions, produce clear design documents, and guide the team on architectural patterns. Troubleshoot production issues rapidly and improve system reliability through monitoring, logging, and error reduction. Deliver high-impact backend features that directly support product growth, user engagement, and business goals.