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Lead .Net Developer at 99x Brazil (formerly Nextly). We are seeking a Lead Developer with deep expertise in .NET, OutSystems, and Redis to lead development efforts for enterprise-grade applications. This role requires strong architecture knowledge, leadership ability, and hands-on technical skills to guide the team and deliver scalable solutions.. Responsibilities. Participate on platform trainings . Analyze system requirements and prioritize tasks. Write clean, testable code using .NET programming languages. Develop technical specifications and architecture. Test and debug various .NET applications. Review and refactor code. Deploy fully functional applications. Upgrade existing programs. Support junior developers’ work. 6–10+ years of software development experience, including leadership or mentoring.. Strong expertise in C#, ASP.NET Core, Web APIs, microservices.. Willing to learn or to be training in OutSystems API development (architecture, reusable modules, performance tuning).. Strong knowledge of Redis (replication, clustering, caching patterns, key eviction strategies).. Strong understanding of SQL Server, stored procedures, and performance tuning.. Experience designing distributed systems and integration patterns.. Solid understanding of Azure services (App Services, Service Bus, API Management, Redis Cache, DevOps).. Experience with DevOps practices, CI/CD pipelines, and Git.. Excellent communication and leadership skills.. Nice to Have. Experience with event-driven architecture.. Knowledge of security standards (OAuth, JWT, Identity Provider integration).. Exposure to containerization and Kubernetes.. Experience working in financial/banking environments (plus).. Company Location: Brazil.