# Senior C# / .NET Core Developer

**Company:** CrossWorkers
**Department:** Software Developers
**Role:** Backend Development
**Location:** CrossWorkers
**Remote status:** Hybrid
**Employment type:** Full-time

**Title:** Senior C# / .NET Core Developer  
**Industry:** IT Software  
**Reporting Line:** Engineering Manager/ Service Delivery Manager  
**Position Type:** Full Time  
**Location:** Cairo

We are looking for a highly skilled and driven Senior C# / .NET Core Developer to build and evolve modern backend systems within a complex, service-based architecture. This role involves working on high-performance services, including edge and IoT scenarios, while leveraging modern development practices and AI-enhanced workflows.

* * *

### **Key Responsibilities:**

**Backend Development:**

- Design, build, and maintain backend and background services using modern .NET

- Develop and maintain REST and gRPC APIs

- Work within a large, mature codebase by extending, refactoring, and modernizing services

- Design efficient data access layers using relational databases

**System Architecture & Performance:**

- Build and operate distributed and event-driven systems

- Ensure high performance and resource efficiency, especially in edge/IoT environments

- Apply spike-driven development to validate new features and approaches

**AI & Modern Practices:**

- Leverage AI tools and adapt to agentic workflows to enhance development efficiency

- Continuously explore and adopt modern technologies and practices

**Collaboration & DevOps:**

- Collaborate with cross-functional teams and contribute to shared architecture standards

- Use Docker and Azure DevOps (CI/CD pipelines) to support development workflows

* * *

### **Desired Skills:**

- Strong expertise in C# and modern .NET (latest versions)

- Experience with ORMs (e.g., Entity Framework) and relational databases (SQL Server, PostgreSQL, Azure SQL)

- Solid understanding of asynchronous programming, multithreading, and concurrency

- Experience building REST APIs and gRPC services

- Strong experience in unit testing and writing clean, maintainable code

- Experience with distributed systems and service-based architectures

- Familiarity with event-driven architectures and messaging patterns

- Hands-on experience with Docker and CI/CD pipelines (Azure DevOps)

- Experience working within complex, existing codebases

- Strong problem-solving and critical thinking skills

- Experience or interest in AI tools and agentic workflows

- Very good English communication skills

* * *

### **Nice to Have:**

- Experience with Azure services (APIM, AGW, AKS, IoT Edge, Functions, Blob Storage)

- Experience with time-series databases (InfluxDB, TimescaleDB)

- Experience with MQTT or similar messaging systems

- General cloud architecture knowledge

- Interest in experimenting with new technologies

- Knowledge sharing and mentoring mindset

* * *

### **What We Value:**

- Ownership and a self-driven mindset

- Clean code, maintainability, and strong documentation practices

- Pragmatic approach to evolving and modernizing systems

- Willingness to understand systems end-to-end

- Proactive adoption of new technologies, especially AI-driven approaches

- Strong collaboration and knowledge-sharing culture

* * *

### **What We Offer:**

- Competitive salary

- Social & Medical insurance

- Flexible working environment

- Professional and supportive work environment

- Access to modern tools and technologies

- Continuous learning and development opportunities

- Clear career growth path

* * *

### **About**  **CrossWorkers**

We are a Danish-owned software offshoring company providing European clients with professional Egyptian developers.

We have been in business since 2009, delivering high-quality software development services and building long-term partnerships.

Our headquarters are in Copenhagen, Denmark, and our Offshore Development Center is located in the Fifth Settlement, New Cairo.

We also have a growing presence across Sweden, Norway, Finland, Switzerland, the UK, Germany, and Bahrain.

[Apply for this position](https://careers.crossworkers-egypt.com/jobs/7550929-senior-c-net-core-developer/applications/new)