Mid–Senior.Net Developer

Recru-It; Johannesburg; On-site; ZAR 600 000 - 800 000; Full time

Job summary

A leading software development company in Johannesburg is looking for a backend developer to design and maintain .NET services. Candidates should have extensive experience in C# and Azure, and will work in an agile environment ensuring adherence to industry standards. Strong problem-solving and teamwork skills are essential. The role also involves building RESTful APIs and utilizing DevOps practices.

Qualifications

• 5+ years of professional experience in .NET software development.
• At least 2+ years working in Azure Cloud environments.
• Experience in scalable platform design or identity verification systems is advantageous.

Responsibilities

• Design, build, and maintain backend services using .NET 6/7/8 (C#).
• Develop and maintain RESTful APIs for identity verification and biometric services.
• Implement microservices and modular architecture for scalability.

Skills

C#

.NET 6/7/8

ASP.NET Core

Entity Framework Core

Microservices

REST APIs

Azure App Services

Azure DevOps Pipelines

SQL Server

OAuth2.0

Docker

Education

Bachelor's Degree in Computer Science or Software Engineering

Tools

Azure Kubernetes Service (AKS)

Visual Studio

Git

Job description

Key Responsibilities

Design, build, and maintain backend services using .NET 6/7/8 (C#).

Develop and maintain RESTful APIs for identity verification, biometric services, and external system integrations.

Implement microservices and modular architecture to ensure scalability and maintainability.

Write clean, reusable, and testable code following SOLID principles and industry best practices.

Integrate external systems via secure APIs.

Deploy and manage applications on Azure App Services, AKS, Azure SQL, and Azure Functions.

Implement CI/CD pipelines using Azure DevOps or GitHub Actions.

Utilize Azure API Management for API gateway and governance.

Configure Azure Key Vault for secrets and certificates management.

Implement monitoring and logging with Azure Monitor, Application Insights, and Log Analytics.

Implement RBAC, OAuth2.0 / OpenID Connect / JWT for secure authentication.

Ensure compliance with POPIA/GDPR data protection standards.

Optimize APIs and database queries for high transaction volumes.

Use Azure Load Balancer, Traffic Manager, and App Gateway for scalability and HA.

Implement fault‑tolerant designs with message queues (Azure Service Bus) and event‑driven architectures.

Collaborate within Agile/Scrum teams and contribute to sprint planning, stand‑ups, and retrospectives.

Required Technical Skills

• Core Development: C#, .NET 6/7/8, ASP.NET Core, Entity Framework Core, LINQ, Web API
• Architecture: Microservices, REST APIs, Domain‑Driven Design, Clean Architecture
• Cloud (Advantage): Azure App Services, Azure Functions, Azure API Management, Azure SQL, Azure Key Vault, Azure Blob Storage, Azure Service Bus, Azure AD
• DevOps & CI/CD: Azure DevOps Pipelines, GitHub Actions, Docker, Kubernetes, Helm
• Database: SQL Server, Azure SQL, Stored Procedures, Indexing, Performance Tuning
• Security: OAuth2.0, OpenID Connect, JWT, HTTPS/TLS, IdentityServer4, Azure AD B2C
• Testing: xUnit/NUnit/MSTest, Moq, Postman Collections, Swagger/OpenAPI
• Monitoring: Application Insights, Azure Monitor, Log Analytics, ELK Stack
• Version Control: Git, GitHub/Azure Repos
• Deployment: Containers (Docker), Azure Kubernetes Service (AKS), ARM/Bicep templates
• Other Plus Skills: PowerShell scripting, Terraform (IaC), API Gateway configuration, CI/CD automation

Qualifications

Bachelor's Degree in Computer Science, Software Engineering, or related field.

47 years of professional experience in .NET software development.

At least 2+ years working in Azure Cloud environments.

Experience in scalable platform design or identity/verification systems is an advantage.

Soft Skills

Strong analytical and problem‑solving abilities.

Passion for writing clean, efficient, and maintainable code.

Excellent teamwork and communication skills.

Proven ability to work independently and deliver in fast‑paced environments.

Attention to detail with focus on performance and security.

Added Advantages

Experience with CI/CD pipelines for regulated industries (government, banking, healthcare).

Familiarity with biometric integrations (fingerprint, face, ID verification APIs).

Experience with Agile, Scrum, or DevOps culture.

Knowledge of container orchestration (AKS/ECS) and infrastructure as code (Terraform/Bicep).

Reports to: Chief Technology Officer (CTO)