Senior Full Stack .NET Developer (C# / ASP.NET Core)

About the role

Vertex Technologies is seeking a Senior Full Stack .NET Developer to join its Cairo office in Smart Village. You will work on international software projects, building scalable .NET solutions and collaborating with a professional team.

Key responsibilities

• Develop and maintain business logic in C# and ASP.NET Core, ensuring high test coverage.
• Expand and improve rich user interfaces using HTML5, CSS, JavaScript and modern frameworks such as Angular, React, Material UI, and Bootstrap.
• Design data schemas, work with MS SQL or PostgreSQL, and integrate third‑party services via REST APIs.
• Optimize performance‑critical parts of the application and address security vulnerabilities.
• Participate in Agile ceremonies and contribute to a collaborative, quality‑focused team environment.

Required profile

• Minimum 5 years of commercial software development experience.
• Strong expertise in C#, ASP.NET Core and front‑end technologies.
• Proficiency with relational databases (MS SQL, PostgreSQL) and RESTful integrations.
• Experience writing unit tests with NUnit or xUnit.
• Comfortable communicating in English in a remote, asynchronous setting.

Required skills

• C#
• ASP.NET Core
• HTML5, CSS, JavaScript, JSON, Ajax
• Angular, React, Material UI, Bootstrap
• MS SQL, PostgreSQL
• REST Web Services
• NUnit, xUnit
• Agile development methodology
• English (professional proficiency)
• Microsoft Azure, AWS, Google Cloud Platform (nice to have)
• Docker and container orchestration (nice to have)
• Performance tuning and security hardening (nice to have)

What we offer

• Long‑term career stability with a competitive salary paid in USD.
• Professional development supported by mentors and innovation programs.
• Private medical insurance after probation.
• Well‑equipped, comfortable office in Smart Village.
• Friendly corporate culture and collaborative atmosphere.