Senior Backend Developer

Rosstone; Wes-Kaap; On-site; ZAR 900,000 - 1,500,000; Full time

Job summary

Rosstone in South Africa is seeking a Senior Backend Engineer to lead the design and evolution of core backend systems using .NET Core and SQL Server.

You will architect scalable services, guide ETL pipelines and reporting, and mentor engineers while upholding SOLID principles.

The role requires 10+ years of experience building enterprise-grade APIs and distributed systems.

Qualifications

• 10+ years of professional software development experience.
• Deep expertise in .NET Core / C# and building scalable RESTful Web APIs.
• Experience designing distributed, enterprise-grade systems.
• Experience implementing and optimising CI/CD pipelines.
• Strong understanding of clean architecture and design patterns.
• Mentored engineers and conducted technical reviews.
• Advanced knowledge of Microsoft SQL Server, including indexing and tuning.

Skills

.NET Core / C#

RESTful Web APIs

Distributed systems

CI/CD pipelines

SOLID design

Mentoring engineers

Microsoft SQL Server

Job description

About the Role:

We are seeking a highly experienced Senior Backend Engineer with 10+ years of professional software development experience to lead the design, development, and evolution of our core backend systems.

You will architect and maintain scalable .NET Core and .NET Framework services, design high-performance SQL Server solutions, and contribute to ETL pipelines and reporting processes.

Minimum Requirements:

• 10+ years of professional software development experience
• Deep expertise in .NET Core / C# and building scalable, production-grade RESTful Web APIs
• Strong experience designing and maintaining distributed and enterprise-grade systems
• Experience implementing and optimising CI/CD pipelines (Azure DevOps or similar)
• Strong understanding of clean architecture, SOLID principles, and design patterns
• Demonstrated experience mentoring engineers and conducting technical reviews
  
• Advanced knowledge of Microsoft SQL Server, including schema design, indexing strategy, performance tuning, and query optimisation