Intermediate C# Developer

Full Circle Recruitment Services; Pretoria; On-site; ZAR 600 000 - 900 000; Full time

Job summary

A recruitment agency is seeking a medium-level C# Developer experienced in modern cloud-native application development. The role involves building scalable services, expertise in microservices, Azure/Kubernetes, and hands-on production experience with Apache Kafka is required. The ideal candidate will also collaborate with DevOps for CI/CD pipelines and observability solutions.

Qualifications

• 3+ years of C# / .NET Core development experience in production systems.
• Strong understanding of microservices principles and architecture.
• Proficiency in containerisation and deployment.

Responsibilities

• Design, develop, and maintain C# / .NET Core microservices.
• Implement containerisation best practices.
• Deploy applications on Azure Kubernetes Service.

Skills

C# / .NET Core

Microservices architecture

Containerisation

Azure / Kubernetes

Apache Kafka

Observability solutions

Tools

Docker

OpenTelemetry

Grafana

Azure DevOps

Prometheus

PostgreSQL

Job description

Position Overview

We are seeking a medium-level C# Developer with strong experience in modern cloud-native application development. The ideal candidate will have proven skills in microservices architecture , containerised deployments , and Azure / Kubernetes orchestration , as well as hands‑on production experience with Apache Kafka . The role involves building and maintaining scalable, resilient services that integrate into a distributed financial-technology ecosystem.

Key Responsibilities

• Design, develop, and maintain C# / .NET Core microservices.
• Implement containerisation best practices (Docker images, deployment pipelines).
• Deploy and manage applications on Azure Kubernetes Service (AKS) or on‑premises Kubernetes clusters.
• Collaborate with DevOps teams to optimise CI / CD pipelines and ensure smooth delivery to production.
• Architect and maintain Apache Kafka clusters including:
  • Topic design, partitioning, replication, retention policies
  • Consumer group optimisation and monitoring
  • Schema Registry usage (Avro / Protobuf / JSON)
  • Kafka Connect integration with external systems
  • Security and access control (ACLs, TLS / SASL)
  • Performance tuning and scaling in production
• Implement and maintain observability solutions including:
  • OpenTelemetry for distributed tracing, metrics, and logging
  • Grafana dashboards for monitoring and alerting
• Work closely with solution architects to ensure alignment with cloud governance and compliance standards.
• Participate in code reviews, architectural discussions, and technical design sessions.
• Monitor, troubleshoot, and improve performance of services in production.

Required Skills & Experience

• 35 years C# / .NET Core development experience in production systems.
• Strong understanding of microservices principles (domain-driven design, bounded contexts, service-to-service communication).
• Proficiency in containerisation (Best practices, image optimisation, debugging containerised apps).
• Hands‑on deployment experience with AKS or Kubernetes (RBAC, ConfigMaps, Secrets, Ingress, scaling strategies).
• Apache Kafka (production experience):
  • Administering Kafka clusters
  • Designing event-driven applications and event schemas
  • Monitoring (Prometheus / Grafana, Confluent Control Center, or similar)
  • Handling data consistency and exactly-once / at-least-once semantics
• Experience with Azure cloud services:
  • Azure DevOps (pipelines, repos, artifacts)
  • Azure Monitor / Application Insights
  • Networking basics (VNETs, load balancers, firewalls)
  • Azure Storage and Messaging (Event Hubs, Service Bus a plus)
  • PostgreSQL experience (schema design, queries, performance tuning).

Optional / Nice-to-Have Skills

• Exposure to agentic coding approaches and AI-assisted development tools (Claude).
• Experience in other messaging technologies (Azure Event Hubs).
• Familiarity with PCI DSS , financial services compliance , or secure coding practices .