Senior Back End Developer

Vitesse Partners; Gauteng; On-site; ZAR 300 000 - 400 000; Full time

Job summary

A leading technology firm is seeking a Senior Back End Developer in Randburg. The candidate must have over 5 years of backend development experience, specifically with .NET Core and Microservices. Responsibilities include building scalable APIs, optimizing performance, and collaborating with teams on CI/CD processes. This is an on-site contract position requiring strong problem-solving skills and a passion for innovation.

Qualifications

• 5+ years in backend development with .NET Core.
• Experience with Microservices and distributed systems.
• Strong knowledge of Kafka, SQS, or similar messaging platforms.

Responsibilities

• Build and maintain scalable APIs and backend services.
• Optimize performance and scalability of backend systems.
• Collaborate with DevOps and QA teams for CI/CD and testing.

Skills

Backend development with .NET Core

Microservices

Kafka

AWS services

Docker

Education

Relevant Business Degree

Job description

This is a contract position and is on site in Randburg.

Purpose of the Position

We are seeking a Senior Back End Developer skilled in .NET Core, Microservices, and Kafka.

Key Responsibilities

• Build and maintain scalable APIs and backend services for high-performance systems.
• Develop and maintain RESTful APIs and backend services.
• Implement event-driven architecture using Kafka or RabbitMQ.
• Optimize performance and scalability of backend systems.
• Collaborate with DevOps and QA teams for CI/CD and testing.
• Ensure secure coding practices and data integrity.

Required Skills & Experience

• 5+ years in backend development with .NET Core.
• Experience with Microservices and distributed systems.
• Strong knowledge of Kafka, SQS, or similar messaging platforms.
• Familiarity with AWS services and containerization (Docker).
• Experience with CoreWCF or legacy .NET modernization.
• Exposure to cloud-native patterns and observability tools.

Qualifications

• Relevant Business Degree compulsory.

Behavioral Competencies

• Outcome driven: focused on delivering scalable and stable commerce experiences.
• Detail oriented: anticipates edge cases in transactional systems.
• Collaborative: works well within product engineering squads and with cross-functional teams.
• Adaptable: thrives in a fast-paced environment with evolving priorities.
• Problem solver: experienced in debugging, root-cause analysis, and resolving production issues.
• Thrives in fast-paced, product-led environments.