Senior C# / .NET Core Developer

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.