Senior .NET Backend Engineer | Remote, Egypt

Quantum HR is a premier human resources consulting firm dedicated to connecting exceptional talent with leading organizations worldwide. We specialize in providing bespoke recruitment solutions, leveraging deep industry insights and a global network to help companies build high-performing teams by matching them with professionals who truly fit their needs and culture.

About the Role

We’re hiring a Senior Backend Engineer (.NET) to help scale ** our client **, a field service management platform powering large-scale inspection operations.

You’ll work on the core backend (APIs, business logic, data layer) behind company’s workflow, form builder, and report engines—focusing on simplifying a mature codebase and building ** scalable, configuration-driven systems** that support enterprise clients without custom development.

This is a senior IC role with real ownership over system design and backend architecture as the platform evolves toward cloud scale.

Key Responsibilities

• Design, build, and maintain scalable backend systems using .NET
• Simplify and refactor a mature, feature-rich codebase (improving structure, clarity, and maintainability)
• Develop clean, consistent, and consumer-friendly REST APIs
• Design modular, well-bounded system components
• Build and enhance configuration-driven platform capabilities (no-code/low-code style abstractions)
• Optimize database performance (queries, execution plans, indexing)
• Ensure system reliability (logging, failure handling, data integrity)
• Collaborate closely with cross-functional teams (frontend, mobile, QA)

Requirements

• Strong experience with .NET (Core and/or Framework)

• Solid experience with Entity Framework and SQL Server

• Strong SQL skills (query optimization, debugging performance issues)

• Proven experience building and designing REST APIs

• Strong systems thinking and ability to design modular, scalable architectures

• Experience working with production systems and maintaining long-term code quality Nice to Have

• Experience refactoring complex or legacy systems

• Experience building configuration-driven or extensible platforms

• Familiarity with AWS or cloud-based architectures

• Experience deploying applications on IIS

• Exposure to large-scale enterprise systems

Benefits

• High-impact role shaping a product at a key scaling stage

• Work on a platform used by large enterprise clients

• Strong growth trajectory toward global expansion and Gartner recognition

• Competitive Package paid in USD