Senior Backend Developer - .NET

At First.Tech, we’re building and scaling technology products across financial services and other high-impact industries. Our engineering teams work on real products, real customers, and systems that need to perform reliably at scale.

We’re looking for a Senior Backend Engineer who enjoys solving complex technical problems, designing scalable services, and taking ownership beyond simply writing code.

What you’ll be working on:

• Design and develop scalable backend services using C#, .NET Core and SQL Server.
• Build and evolve REST APIs, integrations, microservices and distributed systems.
• Translate product and business requirements into robust technical solutions.
• Make architectural decisions that balance scalability, performance, security, maintainability, and delivery speed.
• Identify and resolve complex performance, reliability, and production issues.
• Optimize database queries, application performance, and service reliability.
• Build automated tests and contribute to strong engineering quality standards.
• Participate in technical design discussions, code reviews, and architecture decisions.
• Work closely with Product, Frontend, QA, DevOps, and other engineering teams to deliver end-to-end solutions.
• Support CI/CD pipelines and deployments across development, testing, and production environments.
• Contribute to reusable components, engineering standards, documentation, and technical best practices.
• Mentor other engineers and help raise the technical bar across the team.
• Take ownership of solutions from design → development → deployment → monitoring → continuous improvement.

We’re looking for someone who

• Has 8+ years of backend/software engineering experience.
• Has strong hands-on experience with C#, .NET Core and MS SQL Server.
• Has designed and developed scalable APIs, backend services and distributed applications.
• Has a solid understanding of software architecture, design patterns, integrations and system design.
• Has experience working with relational databases and optimizing complex queries.
• Understands automated testing, CI/CD and modern software development practices.
• Is comfortable working with Git, GitHub, Jira and Agile methodologies.
• Has experience with cloud platforms, Docker and containerized applications — a plus.
• Has exposure to React or frontend development — a plus.
• Enjoys solving ambiguous and technically challenging problems.
• Can communicate technical ideas clearly and collaborate effectively with different teams.

Engineering at First.Tech is evolving

We’re actively adopting AI-assisted engineering across our development lifecycle.

You don’t need to be an AI expert. What matters is that you’re curious about new tools and understand how to use them responsibly — whether that means Claude Code, GitHub Copilot, Cursor, or other AI-assisted development tools.

Senior engineers are expected to be able to review, test, challenge, and improve AI-assisted output rather than simply accept it.

Why join First.Tech?

You’ll have the opportunity to:

• Work on large-scale digital products in the financial technology space.
• Solve meaningful backend and architecture challenges.
• Work alongside Product, Engineering, QA, and technology leaders.
• Help shape engineering practices as the organization continues to scale.
• Mentor and influence other engineers.
• Experiment with modern development approaches, including AI-assisted engineering.
• Grow in an environment that values ownership, learning, collaboration, and impact.

The details

📍 Location: Nasr City, Cairo

🏢 Working model: 5 days in office

💻 Technology: C# | .NET Core | SQL Server | REST APIs | Microservices | Docker | Cloud | CI/CD | AI-assisted development