Senior Back-end Engineer (.NET)

Experience and Skills

• 5+ years of professional experience in backend development with .NET and C#
• C1 English level or higher
• Proven production experience implementing Clean Architecture and CQRS patterns, such as MediatR
• Strong MySQL expertise, including Dapper for high-performance queries and Entity Framework Core (EF Core) for domain management
• Hands-on experience with AWS services, specifically ECS Fargate and RDS
• Demonstrated focus on unit and integration testing
• Hands-on experience with AWS Fargate, Unit Testing.

Skills

• .NET
• Clean Architecture
• CQRS
• MediatR
• MySQL
• Dapper
• Entity Framework Core
• AWS Fargate
• AWS RDS
• Unit Testing
• Integration Testing
• AWS
• testing

Projects

This role focuses on leading the migration of a legacy system to a modern .NET 8+ backend under Clean Architecture. You will operate in a high-availability, highly regulated environment, translating complex business logic into robust, secure Web APIs. This position demands deep technical expertise to ensure precision, reliability, and security across all backend operations. You will collaborate closely with frontend teams to define clear API contracts and implement secure integrations with major payment providers. By optimizing data access paths and ensuring rigorous testing standards, your work will directly impact the performance and scalability of critical transaction systems.

Key Responsibilities

• Migrate complex legacy business logic to modern .NET 8+ Web APIs following Clean Architecture principles across Domain, Application, and Infrastructure layers.
• Design and implement secure APIs featuring robust authentication flows and compliance-mandated session timeouts.
• Optimize MySQL data access using Dapper for performance-critical paths and EF Core for standard domain operations.
• Define clear API contracts for frontend integration and external payment provider connectivity.

Benefits

We provide the opportunity to participate in impactful and technically rigorous industrial data projects that drive innovation and professional growth. Our work environment emphasizes technical excellence, collaboration, and continuous innovation.

Niuro supports a 100% remote work model, allowing flexibility in work location globally. We invest in career development through ongoing training programs and leadership opportunities, ensuring continuous growth and success.

Upon successful completion of the initial contract, there is potential for long-term collaboration and stable, full-time employment, reflecting our long-term commitment to our team members.

Joining Niuro means becoming part of a global community dedicated to technological excellence and benefiting from a strong administrative support infrastructure that enables you to focus on impactful work without distraction.

Nice to Have

• Braintree
• Paymentech
• Payment Gateways
• API Security