Lead .NET Developer

ATS Client; Johannesburg; On-site; ZAR 900,000 - 1,500,000; Full time

Job summary

ATS Client in Johannesburg is seeking a Lead .NET Angular Developer to drive modernization of core systems. You will lead a small team, own the environment, and transform legacy AngularJS and .NET Framework applications into a cloud-ready architecture.

You will design scalable microservices, RESTful APIs, and ensure performance of SQL Server workloads while mentoring engineers and collaborating with product teams to align capabilities with business needs. Hybrid work with one day in-office.

Qualifications

• 5–8+ years of professional software development experience, including 2+ years in a lead or senior capacity.
• Proficiency in C#, .NET Core / .NET 5+, AngularJS, and modern Angular (v10+).
• TypeScript, JavaScript, HTML5, and CSS.
• Strong background in microservices, RESTful API design, and distributed systems.
• Experience with message bus technologies: RabbitMQ, Kafka, Azure Service Bus.
• Solid SQL Server skills (query optimization, schema design, performance tuning).
• Familiar with CI/CD pipelines, Git, and Agile/Scrum methodologies.
• Strong leadership, communication, and problem‑solving skills – able to bridge technical and business contexts.

Responsibilities

• Modernize & Rebuild: Lead the migration of legacy applications to modern Angular (v10+) and .NET Core/5+.
• Architect for Scale: Design and implement scalable microservices and RESTful APIs following SOLID and domain‑driven design principles.
• Distributed Systems: Manage inter‑service communication using RabbitMQ, Kafka, or Azure Service Bus in an event‑driven architecture.
• Data & Performance: Optimize SQL Server performance and improve high‑volume data throughput.
• Technical Leadership: Mentor 2 - 3 developers, conduct code reviews, and establish best practices across the stack.
• System Ownership: Oversee architecture, CI/CD, deployment, monitoring, and ongoing stability of systems.
• Cross‑Team Collaboration: Work with product and business teams to ensure alignment between system capabilities and operational needs.

Skills

C#

.NET Core

AngularJS

Angular v10+

TypeScript

JavaScript

HTML5

CSS

Microservices

REST APIs

RabbitMQ

Kafka

Azure Service Bus

SQL Server

CI/CD

Git

Agile/Scrum

Leadership

Communication

Tools

Docker

Kubernetes

Job description

Lead .NET Angular Developer (System Modernization & Data Focus)

About Our Client

• Leading B2B Credit Bureau in South Africa.
• Providing data‑driven insights to help businesses manage credit risk, supplier relationships, and operational decision‑making.
• Company operates within a strong technology group and is now embarking on a full system modernization journey – transforming legacy systems into scalable, high‑performance platforms that support long‑term growth.

The Role

• Location: Johannesburg, South Africa
• Job Type: Hybrid (1 day a week in‑office)
• Experience: 5 – 8+ years of experience.
• Motivation: A passion for system modernization, and technical depth to rebuild distributed systems for scale and performance.
• Expectation: You'll lead a small team, take ownership of the environment, and drive the end‑to‑end transformation of critical systems built on AngularJS and .NET Framework into a modern, cloud‑ready architecture.

Key Responsibilities

• Modernize & Rebuild: Lead the migration of legacy applications to modern Angular (v10+) and .NET Core/5+.
• Architect for Scale: Design and implement scalable microservices and RESTful APIs following SOLID and domain‑driven design principles.
• Distributed Systems: Manage inter‑service communication using RabbitMQ, Kafka, or Azure Service Bus in an event‑driven architecture.
• Data & Performance: Optimize SQL Server performance and improve high‑volume data throughput.
• Technical Leadership: Mentor 2 - 3 developers, conduct code reviews, and establish best practices across the stack.
• System Ownership: Oversee architecture, CI/CD, deployment, monitoring, and ongoing stability of systems.
• Cross‑Team Collaboration: Work with product and business teams to ensure alignment between system capabilities and operational needs.

Skills & Experience

• 5 – 8+ years of professional software development experience, including 2+ years in a lead or senior capacity.
• Proficiency in C#, .NET Core / .NET 5+, AngularJS, and modern Angular (v10+).
• Expertise in TypeScript, JavaScript, HTML5, and CSS.
• Strong background in microservices, RESTful API design, and distributed systems.
• Experience with message bus technologies: RabbitMQ, Kafka, Azure Service Bus.
• Solid SQL Server skills (query optimization, schema design, performance tuning).
• Familiar with CI/CD pipelines, Git, and Agile/Scrum methodologies.
• Strong leadership, communication, and problem‑solving skills – able to bridge technical and business contexts.

Nice to Have

• Experience with cloud‑based environments (Azure or AWS).
• Familiarity with containerization (Docker, Kubernetes).
• Exposure to large‑scale modernization or re‑platforming projects.

Culture & Benefits

• Collaborative.
• Forward‑thinking engineering culture.
• Values technical excellence, ownership, and long‑term system sustainability.
• Expect autonomy in decision‑making, mentorship opportunities, and the chance to shape the technical foundation of a business‑critical system serving enterprises across Southern Africa.