Senior Software Engineer, Backend Development (C# .NET)

Appier is seeking a highly skilled Senior Backend Developer specializing in distributed systems and modern backend architecture. The role involves designing, developing, and maintaining scalable, high-performance backend services, optimizing code, and collaborating with cross-functional teams. The ideal candidate will have expertise in microservices, message queues, data persistence, and performance optimization.

Requirements

• Extensive experience in ASP.NET Core backend development
• Advanced proficiency in C# programming and object-oriented principles
• Proven experience in distributed systems and microservice architectures
• Strong expertise in PostgreSQL, MongoDB, and SQL/NoSQL database design
• Proficiency in code-first development and hands-on experience with Entity Framework Core or equivalent ORMs
• Advanced knowledge of RabbitMQ or similar message broker systems
• In-depth understanding of IO-bound operations, threading, parallelism, and asynchronous programming
• Practical experience with Docker and container-based deployment workflows
• Strong analytical and problem-solving skills
• Solid experience in performance tuning and scalability