React Native Mobile App Developer – iOS & Android

Quantum Technologies. LLC; Helena, Northern (MT, KY); Hybrid; USD 55,000 - 90,000; Full time

Job summary

Quantum Technologies LLC in Helena, MT is seeking a Mobile Application Developer to build and enhance cross‑platform apps for iOS and Android using React Native. The role focuses on improving efficiency, data integrity, and functionality of the mobile app through analysis, design, development, testing, and deployment activities.

You will work with local storage for offline use, consume and produce JSON REST services, and collaborate in an Agile environment with Kanban, GitLab, IntelliJ, Spring,

Qualifications

• Proficient in React Native for iOS and Android.
• Experience with offline data storage in mobile apps.
• Strong Java and OO programming.
• Experience consuming/producing JSON REST services.
• Experience with Oracle and PostgreSQL.
• Familiar with Agile, Kanban, GitLab, IntelliJ, Spring, Struts, WildFly, and UX/UI.
• Code adheres to FWP design, security standards.
• Thoroughly tested, production-ready code.
• Documented code changes.
• Work must be deliverable at end of each sprint with testable features.

Responsibilities

• Develop mobile apps using React Native for iOS and Android.
• Ensure offline operation using local storage.
• Integrate JSON REST services and backend data.
• Work with Oracle and PostgreSQL databases.
• Follow Agile methodologies with Kanban, GitLab, and CI/CD considerations.
• Produce well-documented, tested, deployable code at sprint ends.
• Implement and verify UI/UX requirements.

Skills

React Native

iOS

Android

Local storage

Java

JSON REST services

Agile

UX/UI

Tools

React Native

iOS

Android

Local storage

Java

JSON REST

Oracle

PostgreSQL

Agile

Kanban

GitLab

IntelliJ

Spring

Struts

WildFly

UX/UI

Job description

Quantum Technologies LLC in Helena, MT is seeking a Mobile Application Developer to build and enhance cross‑platform apps for iOS and Android using React Native. The role focuses on improving efficiency, data integrity, and functionality of the mobile app through analysis, design, development, testing, and deployment activities.

You will work with local storage for offline use, consume and produce JSON REST services, and collaborate in an Agile environment with Kanban, GitLab, IntelliJ, Spring,