React Native Mobile Developer

Humankind; Sandton; On-site; ZAR 413,000 - 689,000; Part time

Job summary

Humankind is seeking a Senior React Native Mobile Developer for a 6-month onsite contract in Sandton. You will deliver production-grade React Native apps end-to-end, from development to deployment, across iOS and Android.

The role emphasizes hands-on React Native with Expo, RTK, TypeScript, testing and CI/CD, including signing, App Store Connect and Google Play deployment in a fast-paced financial services tech environment.

Qualifications

• Experience delivering production React Native mobile apps end-to-end.
• Solid knowledge of iOS and Android app deployment processes (App Store / Play Store).
• Hands-on testing and mobile delivery, including signing and certificates.

Responsibilities

• Develop, enhance and maintain production React Native mobile applications.
• Build scalable, reliable and high-performing mobile features using React Native, TypeScript and Redux Toolkit.
• Integrate mobile applications with REST APIs and backend services.
• Manage application state, performance and the Redux lifecycle.
• Develop and maintain automated unit, integration and end-to-end testing.
• Support mobile CI/CD pipelines, automated builds and release processes.
• Manage application signing, certificates and production releases.
• Deploy and manage applications through App Store Connect, TestFlight and Google Play Console.
• Work closely with engineering, product and technical teams within an Agile delivery environment.
• Troubleshoot mobile-specific issues across iOS and Android platforms.

Skills

React Native

Expo

Redux Toolkit

TypeScript / JavaScript

REST API integration

State management & performance

Jest

RNTL/Detox

Tools

Azure DevOps

App Store Connect

TestFlight

Google Play Console

CI/CD Tools

Job description

Senior React Native Mobile Developer

6-Month Contract | Sandton | Onsite

Rate: Up to R500 per hour

We are looking for an experienced React Native Mobile Developer to join a high-performing technology environment within a leading financial services organisation.

This is a 6-month contract opportunity based onsite in Sandton and is suited to a strong mobile developer who has delivered production-grade React Native applications end-to-end.

This is not a web-focused React role. We are specifically looking for candidates with solid, hands-on React Native mobile development experience, including testing, build automation, application signing and deployment to the Apple App Store and Google Play Store.

Key Responsibilities

• Develop, enhance and maintain production React Native mobile applications.
• Build scalable, reliable and high-performing mobile features using React Native, TypeScript and Redux Toolkit.
• Integrate mobile applications with REST APIs and backend services.
• Manage application state, performance and the Redux lifecycle.
• Develop and maintain automated unit, integration and end-to-end testing.
• Support mobile CI/CD pipelines, automated builds and release processes.
• Manage application signing, certificates and production releases.
• Deploy and manage applications through App Store Connect, TestFlight and Google Play Console.
• Work closely with engineering, product and technical teams within an Agile delivery environment.
• Troubleshoot mobile-specific issues across iOS and Android platforms.

Essential Technical Skills

Candidates must have strong commercial experience with:

• React Native 0.80+ – 0.78+ will be considered
• Expo
• Redux Toolkit (RTK)
• TypeScript / modern JavaScript
• REST API integration
• Mobile state management and performance optimisation

Testing

Hands-on experience with:

• Jest
• React Native Testing Library (RNTL)
• Detox
• Maestro

Mobile & Native Experience

Candidates should have a good understanding of:

• Native iOS and Android integrations
• Mobile application architecture
• App lifecycle and performance
• Production debugging and troubleshooting

Experience with Swift and/or Kotlin will be advantageous.

DevOps & Mobile Delivery

Experience in the following will be highly advantageous:

• CI/CD pipelines, ideally Azure DevOps or similar
• Automated testing within deployment pipelines
• Mobile build and release automation
• App Store Connect
• TestFlight
• Google Play Console
• App signing and certificate management
• Production application publishing and release management

The Ideal Candidate

The successful candidate will have personally contributed to delivering React Native applications into production, rather than having only limited React Native exposure as part of a predominantly web-based React role.

You should be comfortable working across the full mobile delivery lifecycle:

Development → Testing → Build Pipeline → Signing → Release → App Store / Play Store Deployment

• Due to the nature of the environment, successful candidates will be required to undergo screening and must be able to obtain satisfactory:

• Criminal clearance
• Credit clearance

If you are an experienced React Native Developer with proven production mobile delivery experience and are available for a contract opportunity in Sandton, we would like to hear from you.