.NET Backend Engineer

ErthDev; United States; Remote; USD 60,000 - 100,000; Part time

Benefits offered by this job

Paid leave

Medical insurance

Equipment and internet support

Learning/ certification support

Mentorship and cross-project exposure

Job summary

ErthDev in the United States is seeking a part-time backend engineer to build and maintain production services, focusing on correctness, security, and operability. You will design REST APIs, model domains, and integrate with internal and external systems.

You\'ll work with C# and .NET, SQL databases, and ORM patterns, participate in design reviews, and ensure maintainability. This remote role offers flexible hours, with Egypt-based teams collaborating across regions.

Qualifications

• Strong production experience with C# and .NET.
• Experience building REST APIs with ASP.NET Core.
• Solid understanding of relational databases and ORM patterns.
• Familiarity with testing and continuous integration.
• Understanding of authentication and authorization.

Responsibilities

• Design and implement backend services and REST APIs with .NET.
• Define application boundaries, domain models, and data access patterns.
• Work with SQL Server or other relational databases.
• Build integrations and test critical business behavior.
• Improve service performance, reliability, and observability.
• Join technical design discussions and code reviews; coordinate with frontend, QA, DevOps, and product colleagues.
• Address authentication, authorization, and security-sensitive flows, and document service behavior and design decisions.

Skills

C# and .NET

ASP.NET Core REST APIs

Relational databases & ORM

Testing & CI

Authentication & Authorization

Tools

Entity Framework

Dapper

Azure

Docker

Message queues

DDD

Job description

Role overview

Build and maintain production backend services for business systems where correctness, security, and ongoing operability matter. The work includes API design, domain and data modeling, and integrations with internal and third-party systems, with an emphasis on clear service boundaries and maintainable implementation.

Responsibilities

• Design and implement backend services and REST APIs with .NET.
• Define application boundaries, domain models, and data access patterns.
• Work with SQL Server or other relational databases.
• Build integrations and test critical business behavior.
• Improve service performance, reliability, and observability.
• Join technical design discussions and code reviews; coordinate with frontend, QA, DevOps, and product colleagues.
• Address authentication, authorization, and security-sensitive flows, and document service behavior and design decisions.

Requirements

• Strong production experience with C# and .NET.
• Experience building REST APIs with ASP.NET Core.
• Solid understanding of relational databases and ORM patterns.
• Familiarity with testing and continuous integration.
• Understanding of authentication and authorization.
• Strong debugging, problem-solving, and technical communication skills, with a practical approach to maintainability.

Nice to have

Experience with Entity Framework, Dapper, Azure, Docker, message queues, or domain-driven design.

Benefits and work setup

Part-time role, fully remote from Egypt, with flexible hours and collaboration overlap; Cairo office access is available when needed. The package includes paid annual and sick leave, performance bonuses, annual salary reviews, medical insurance, equipment and internet support, and learning support through courses, certifications, and conferences. Mentorship and exposure to projects across different industries are also offered.