Full-Stack Engineer (React / Typescript, Growing Into.Net)

Codematch Co; Johannesburg; Hybrid; ZAR 600,000 - 900,000; Full time

Job summary

Codematch Co in Johannesburg is seeking a Full-Stack Engineer (React/TypeScript) to join our live product team. You will own three live React apps—consumer portal, admin/campaign portal, and client reporting—plus a PWA owner portal for low-end devices, and work on data pipelines and edge services.

The role offers a path to grow into the .NET API alongside a senior engineer, with a hybrid work model after onboarding.

Qualifications

• Experience building production React/TypeScript apps.
• Willingness to learn .NET and grow into backend API work.
• Strong SQL/data scripting and a curiosity about the product.

Responsibilities

• Maintain and extend three live React apps: consumer portal, admin/campaign portal, and reporting app.
• Build a new owner portal as a PWA for low-end devices and patchy connectivity.
• Develop data pipelines, edge services, and grow into .NET API with guidance.

Skills

React

TypeScript

Node/JavaScript

C#/Java

SQL

Python

Full-stack mindset

Tools

Cloudflare Workers

Supabase

ClickHouse

BigQuery

Snowflake

Vite

Tailwind

shadcn/ui

Job description

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 youModern 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.