Intermediate Developer

Bluelinesolutions; Sandton; On-site; ZAR 480,000 - 720,000; Full time

Job summary

Bluelinesolutions in South Africa seeks an Intermediate Developer to join a collaborative, tech-driven team. You’ll work on impactful projects, write clean C# code, and help design APIs and data solutions.

The role emphasizes strong SQL skills, problem-solving, and a willingness to learn. Legal right to work in South Africa required. On-site in Sandton.

Qualifications

• Minimum 5 years’ development experience.
• Strong SQL expertise essential.
• Familiarity with C# (we’ll help you level up).
• Legal right to work in South Africa required.

Responsibilities

• Develop and maintain software applications using C# (.NET Core/Framework).
• Write clean, reusable code following best practices.
• Implement business logic, APIs, and background services.
• Debug with Visual Studio and logging frameworks.
• Participate in code reviews.
• Design and optimize SQL databases (procedures, views, functions).
• Write complex SQL queries for reporting and integrations.
• Perform performance tuning (indexing, queries).
• Ensure data integrity, accuracy and security.
• Troubleshoot database-related issues.
• Collaborate in a collaborative tech-driven environment.

Skills

SQL

C# / .NET

Problem-solving

Learning mindset

Legal right to work in SA

Tools

Visual Studio

Logging frameworks

SQL Server Management Studio

Job description

Are you a problem-solver who thrives on turning data into insight?

We’re on the hunt for Intermediate Developers to join our growing team . A supportive team that values innovation and knowledge-sharing. Exposure to exciting projects with real-world impact.

Duties & Responsibilities

• Work on impactful projects in a collaborative tech-driven environment.
• Build, enhance, and maintain software applications using C# (.NET Core / .NET Framework) .
• Write clean, reusable, well-structured code following best practices.
• Implement business logic, APIs, and background services.
• Debug and fix issues using tools like Visual Studio and logging frameworks.
• Participate in code reviews — both giving and receiving feedback.
• Design, optimize, and maintain SQL databases (stored procedures, views, functions).
• Write complex SQL queries for reporting, processing, and integrations.
• Perform performance tuning (indexing, query optimisation).
• Ensure data integrity, accuracy, and security.
• Troubleshoot database-related issues.

Desired Experience & Qualification

• Minimum 5 years’ experience in development.
• Strong SQL expertise (this is key!).
• Familiarity with C# (we’ll help you level up if needed).
• Strong problem-solving mindset and eagerness to learn.
• Applicants must have the legal right to work in South Africa.