We are looking for a Senior Back-end Developer (.NET) to join our engineering team and play a key role in designing, developing, and evolving scalable, cloud-native backend systems. In this position, you will take ownership of critical platform components, contribute to architectural decisions, and help shape the technical direction of our products. You will work on multi-tenant, distributed systems, responsible for implementing new functionality, maintaining existing services, and continuously improving performance, reliability, and scalability. This role involves close collaboration with cross-functional teams, active participation in technical discussions, and mentoring of other engineers. Your work will directly impact core platform areas such as provisioning workflows, billing and invoicing engines, vendor synchronization services, and notification systems.
Key Responsibilities:
- Design, develop, and maintain high-quality backend services using modern .NET technologies.
- Take ownership of critical system components, including architecture, design, documentation, and long-term maintainability.
- Build and evolve multi-instance and multi-tenant architectures.
- Implement inter-service communication using Azure Service Bus and REST APIs.
- Develop and maintain scheduled background workers and asynchronous processing pipelines.
- Participate in system architecture discussions, propose improvements, and influence technical decision-making.
- Continuously improve code quality, performance, security, and system reliability.
- Perform code reviews, provide technical guidance, and mentor other engineers.
- Collaborate closely with QA and support teams to troubleshoot complex production issues and improve system stability.
- Actively contribute to improving development processes, engineering standards, and delivery practices.
- Participate in the full software development lifecycle: requirements analysis, estimation, design, development, testing, deployment, and maintenance.
Must-have:
- 5+ years of professional experience in back-end development using the .NET stack, with a strong focus on C# and modern .NET (6+).
- Strong hands-on experience in designing, developing, and maintaining high-performance, scalable, and reliable backend services.
- Proven experience with ASP.NET Web API and building RESTful APIs.
- Expert knowledge of MS SQL Server, including performance tuning, indexing strategies, query optimization, and data modeling.
- Advanced experience with Entity Framework, including performance optimization and complex data access scenarios.
- Solid understanding and practical application of SOLID principles, clean architecture, and modern software engineering best practices.
- Strong experience working with message-based architectures using Azure Service Bus (experience with Ra