Senior Back-end Developer (.NET)

Ulvior; United States; Remote; USD 120,000 - 170,000; Full time

Job summary

Niuro is seeking a senior backend developer to migrate legacy logic to modern .NET 8+ Web APIs, using Clean Architecture, Domain, Application, and Infrastructure layers. The role centers on building robust services with strong security and scalable data access.

You will work in a 100% remote model with global teams, contributing to high-impact industrial data projects and ongoing career development. Successful candidates join a culture of technical excellence and innovation.

Qualifications

• 5+ years of professional backend experience in .NET/C#.
• C1 English level or higher.
• Proven experience with Clean Architecture and CQRS (MediatR or similar).
• Strong MySQL expertise with Dapper and EF Core for domain management.
• Hands-on AWS experience: Fargate, RDS and testing.

Responsibilities

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

Skills

.NET 8+

C#

Clean Architecture

CQRS

MediatR

MySQL

Dapper

EF Core

AWS Fargate

AWS RDS

Tools

Redis

Amazon SQS

RabbitMQ

Job description

• 5+ years of professional experience in backend development with .NET / C#
• C1 English level or higher
• Proven production experience with Clean Architecture and CQRS patterns (MediatR or similar)
• Strong MySQL expertise with Dapper for high-performance queries and EF Core for domain management
• Hands-on AWS experience: Fargate, RDS
• Demonstrated focus on unit and integration testing

Skills

• .NET 8+
• C#
• Clean Architecture
• CQRS
• MediatR
• MySQL
• Dapper
• EF Core
• AWS Fargate
• AWS RDS

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

• Braintree
• Paymentech
• PCI-DSS
• SOC 2
• GDPR
• Redis
• Amazon SQS
• RabbitMQ

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.