Senior Full-Stack Engineer & Tech Lead

Core; Johannesburg; On-site; ZAR 900,000 - 1,300,000; Full time

Job summary

Core is seeking a Lead Full Stack Developer to own the most complex features across front‑end Angular/React and back‑end .NET/C# and Node.js services. You’ll design, build, and maintain APIs and data stores, mentor engineers and raise technical standards through reviews and secure coding practices.

You’ll translate architecture into actionable designs and drive integration work across ERP/OMS/WMS/CRM using Azure stack, ensuring stability during peak trading and major launches.

Qualifications

• Degree in Computer Science or related field.
• 8+ years in full-stack software development, including senior/lead experience.
• Deep hands-on experience with Angular, React, .NET/C#, Node.js, SQL Server, PostgreSQL and Cosmos DB.
• Strong Azure and integration experience, including API design and versioning.
• Excellent design, code quality, testing and secure-coding discipline.
• Strong problem-solving skills and ability to mentor other engineers.

Responsibilities

• Design and build complex end-to-end features across Angular/React front ends, .NET/C# and Node.js services, and SQL/NoSQL data stores.
• Contribute production code regularly and set the technical standard by example.
• Build and maintain back-end APIs and services used by web and native mobile clients, with clean, well-versioned contracts.
• Translate solution architecture into detailed component, API and data designs that the team can implement.
• Lead code and peer reviews, champion automated testing, clean code, maintainability and secure engineering practices.
• Mentor engineers and help strengthen technical craft without formal line-management responsibility.
• Design and build integrations between e-commerce, trade-in and POS and core ERP/OMS/WMS/CRM platforms using Azure integration technologies.
• Support production issue resolution and technical readiness for peak trading and major product launches.

Skills

Hands-on leadership

Mentorship

Problem solving

Team collaboration

Education

Degree in Computer Science or related field

Tools

Angular

React

.NET/C#

Node.js

SQL Server

PostgreSQL

Cosmos DB

Azure

API design

Job description

Core is seeking a Lead Full Stack Developer to own the most complex features across front‑end Angular/React and back‑end .NET/C# and Node.js services. You’ll design, build, and maintain APIs and data stores, mentor engineers and raise technical standards through reviews and secure coding practices.

You’ll translate architecture into actionable designs and drive integration work across ERP/OMS/WMS/CRM using Azure stack, ensuring stability during peak trading and major launches.