Full-Stack Engineer (React / TypeScript, growing into .NET)

Rosebank, Johannesburg

• Hybrid after onboarding
• Permanent

Build the apps real people use on real phones, and grow into the backend.

Our client runs a live retail-media and connectivity platform used every day by consumers and small-business owners across South Africa's informal-trade market, with leading consumer brands buying media and insights on top of the data. Product development is moving in-house and this is one of the first two engineering hires.

What You'll Own

• Three live React apps: a consumer-facing portal, an admin and campaign portal, and a client reporting app
• A new owner portal built as a PWA for low-end Android phones and patchy connectivity
• The data pipelines behind the product (event data, SQL Server, Postgres)
• Smaller edge services (Cloudflare Workers, Supabase apps)
• Growing into the .NET API alongside a senior engineer

What You'll Bring

• A very strong front end: React and TypeScript in production
• Backend experience in Node/JavaScript, TypeScript, C#, Java or Kotlin, with a production ORM and cloud deployment, and a willingness to learn .NET. .NET experience is a strong plus
• Comfort with SQL and scripting for data work (Python or TypeScript)
• A full-stack mindset, self-direction and curiosity about the product and its users

Nice to have: PWA or offline-first work, ClickHouse / BigQuery / Snowflake, event-driven patterns, daily use of AI coding tools.

Why this role

• Real breadth: frontends, data and edge services on a live product
• A planned growth path into .NET with a senior engineer alongside you
• Modern stack: React, Vite, Tailwind, shadcn/ui, Cloudflare Workers, Supabase, ClickHouse

Work model

office-based in Rosebank for the first three months while you learn the platform and the team, then hybrid: three days in the office, two from home.

Package

market-related, depending on experience.