We're looking for a highly experienced Senior Backend Engineer to lead the design and evolution of our core backend systems. You'll architect scalable .NET Core and .NET Framework services, design high-performance SQL Server solutions, and contribute to ETL pipelines and reporting processes. This is a strategic technical leadership role where you'll define backend standards, ensure system reliability, and shape the technical direction of our platform while remaining hands-on with production-grade code. While primarily backend-focused, you'll collaborate closely with our frontend engineers building Vue.js applications and have the opportunity to expand your influence across the full application stack. We offer a clear pathway to broader full-stack ownership, where you'll contribute to end-to-end solution design and drive frontend-backend alignment as part of your continued growth. You'll mentor engineers, lead architectural discussions, and proactively identify technical risks while working across distributed teams. We're seeking someone with 10+ years of professional software development experience, deep expertise in .NET Core/C# and RESTful Web APIs, and advanced knowledge of SQL Server optimization. You should bring strong architectural judgment, experience with CI/CD pipelines (Azure DevOps or similar), and a solid understanding of clean architecture and SOLID principles. The ideal candidate is a strategic technical leader who excels at communication, can articulate architectural decisions to both technical and non-technical stakeholders, and is passionate about code quality, testing standards, and engineering best practices.