Senior Full Stack Developer

Level-Up; Johannesburg; On-site; ZAR 600 000 - 900 000; Full time

Job summary

A dynamic tech company in Johannesburg is seeking a Senior Full Stack Developer to lead the architecture and development of enterprise-grade applications using .NET 8/9 and React v19. The ideal candidate will possess deep technical expertise in Azure Cloud services and a strong foundation in collaborative Agile methodologies. This role emphasizes mentorship and innovation, contributing to scalable solutions that drive business value.

Qualifications

• Proficient in .NET development with experience in backend services.
• Experienced in frontend technologies, specifically React and TypeScript.
• Knowledgeable in Azure Cloud services and DevOps practices.

Responsibilities

• Architect and build full-stack applications using .NET and React.
• Design scalable RESTful APIs and microservices architectures.
• Mentor junior developers and engage in Agile ceremonies.

Skills

.NET 8/9

React v19

C#

Azure DevOps

Terraform

Agile methodologies

Tools

Azure SQL Database

Git

Azure Pipelines

Job description

The Senior Full Stack Developer architects, builds, and evolves enterprise-grade applications leveraging .NET 8/9, React v19, and Microsoft Azure Cloud Services. This role delivers technical leadership throughout the complete software lifecycle from conceptual design through production monitoring ensuring delivery of scalable, secure, cloud‑native solutions that drive business value and align with enterprise architecture standards.

This position demands both deep technical expertise and collaborative leadership, bridging development teams, cloud infrastructure, and business stakeholders to deliver high‑performance applications built on modern engineering principles.

Core Responsibilities

Solution Architecture & Engineering

• Architect and build full‑stack enterprise applications using .NET 8/9 (C#, ASP.NET Core) backend services and React v19 + TypeScript frontend experiences
• Design RESTful APIs, microservices architectures, and event‑driven systems for scalability and resilience
• Apply industry‑standard design patterns including SOLID principles, Clean Architecture, and CQRS
• Enforce secure coding practices and security‑by‑design methodologies across all deliverables

Azure Cloud Architecture & Services

• Integrate applications with Azure ecosystem services: App Service, Functions, Blob Storage, Service Bus, Key Vault, and Azure SQL Database
• Implement comprehensive observability using Azure Monitor, Application Insights, and Log Analytics for performance optimization and diagnostics
• Employ Infrastructure‑as‑Code approaches using Terraform, Bicep, or ARM Templates for reproducible cloud environments

DevOps Engineering & Automation

• Design and maintain robust CI/CD pipelines through Azure DevOps or GitHub Actions
• Enable containerized deployments using Azure Container Apps or Azure Kubernetes Service (AKS)
• Integrate automated testing suites, static code analysis, and progressive deployment strategies including blue‑green and canary releases

Agile Collaboration & Technical Governance

• Actively contribute to Agile/Scrum ceremonies including sprint planning, daily standups, and retrospectives
• Conduct rigorous peer code reviews to maintain engineering excellence and consistent quality standards
• Ensure solutions comply with organizational policies, information security frameworks, and architectural governance requirements

Technical Leadership & Innovation

• Mentor and coach junior developers, providing guidance on complex problem‑solving and architectural decisions
• Drive process improvements, develop reusable component libraries, and establish best‑practice frameworks
• Maintain currency with evolving technologies, tools, and methodologies across .NET, React, and Azure platforms

Technical Capabilities

Domain

Technologies & Skills

Backend Development

.NET 8/9, ASP.NET Core, C#, Web API, Entity Framework Core, LINQ, Dependency Injection

Frontend Development

React v19, TypeScript, JavaScript (ES6+), Redux/Context API, HTML5, CSS3, Material UI

Database Engineering

Azure SQL Database, T‑SQL, Stored Procedures, Indexing, Query Optimization

Cloud & DevOps

Azure App Service, Azure Functions, Azure Container Apps/AKS, Service Bus, Blob Storage, Key Vault, Azure DevOps, GitHub Actions

Testing Frameworks

xUnit/NUnit, Jest/React Testing Library

Version Control

Git, GitHub, Azure Repos

CI/CD & Observability

Azure Pipelines, Application Insights, Log Analytics, Terraform/Bicep

Architecture Patterns

REST, Microservices, CQRS, Clean Architecture, Domain‑Driven Design (DDD)