Senior C#.NET SQL Developer

Together Staffing group; Johannesburg; Remote; ZAR 1,000,000 - 1,800,000; Full time

Job summary

Together Staffing group seeks a highly experienced Senior C#.NET SQL Developer to join a remote-first team in Johannesburg. The role demands hands-on coding, advanced SQL optimisation, and deep database engineering to support business-critical applications.

You will work across full-stack development, leverage .NET Core, ASP.NET, Blazor, and REST/SOAP APIs, and collaborate with cross-functional teams to deliver scalable solutions in a distributed environment.

Qualifications

• 10+ years of C#, .NET and SQL development experience.
• Strong relational database design and T-SQL skills.
• Experience with SSIS/SSRS and Excel VBA within last 3 years.
• Proven ability to optimise SQL queries and database performance.
• Familiarity with AI-assisted development tools to improve productivity and code quality.
• Solid experience with .NET Core, ASP.NET, Blazor and Razor Pages.
• Web development knowledge including HTML, CSS, JavaScript/TypeScript, and REST/SOAP APIs.

Skills

C#

.NET

SQL

T-SQL

Database design

SQL performance

Blazor

REST APIs

HTML/CSS/JS

Tools

SSIS

SSRS

Excel VBA

AI-assisted tools

Job description

Our client is seeking a highly experienced Senior C#.NET SQL Developer with strong database engineering and full-stack development capability. The role requires hands-on coding expertise, advanced SQL optimisation skills, and experience supporting business-critical applications in a remote-first team environment.

Requirements

• Minimum 10 years’ experience in C#, .NET, and SQL development, with at least 5 recent years of daily hands-on coding
• Strong expertise in relational database design and T-SQL, including stored procedures, triggers, views, indexes, constraints, and foreign keys
• Experience with SSIS, SSRS, and Excel VBA (within the last 3 years)
• Proven ability to optimise SQL queries and database performance
• Familiarity with AI-assisted development tools to improve productivity and code quality
• Solid experience with .NET Core, ASP.NET, Blazor, and Razor Pages
• Web development knowledge including HTML, CSS, JavaScript/TypeScript, and REST/SOAP APIs