Logo-of-QUANTUM-INFOTECH-SOLUTIONS-PTE.-LTD.-hiring-for-jobs-in-Singapore-on-GrabJobs

Senior Mobile & Web Developer (iOS Android React)

salary Salary :

$8,500 - 12,000 monthly

Job Description - Senior Mobile & Web Developer (iOS Android React)

About the Role

We are looking for a talented Senior Mobile & Web Application Developer to join our engineering team. In this role, you will design, develop, and maintain high-quality applications across iOS, Android, and Web platforms. You will work on scalable, performance-driven products while collaborating with cross-functional teams to deliver exceptional user experiences.

If you're passionate about building modern applications and enjoy working across multiple technologies, we'd love to hear from you.

Key Responsibilities

iOS Development

  • Design, develop, and maintain native iOS applications using Swift, SwiftUI, and Objective-C.
  • Build intuitive, responsive user interfaces and integrate RESTful APIs.
  • Perform debugging, testing, and performance optimization using Xcode, XCTest, and XCUITest.
  • Manage App Store releases, versioning, and deployment using Fastlane.

Android Development

  • Develop and maintain Android applications using Java.
  • Publish and maintain applications on the Google Play Store.
  • Integrate Firebase services and manage local storage using SQLite or Realm.

Web Development

  • Develop responsive web applications using ReactJS, TypeScript, JavaScript, HTML, and CSS.
  • Build reusable UI components and ensure cross-browser compatibility.
  • Write unit tests using Jest and optimize application performance.

Engineering & Collaboration

  • Integrate REST APIs and collaborate with backend teams.
  • Manage source code using Git, GitHub, Bitbucket, or SVN.
  • Build and maintain CI/CD pipelines using Jenkins and GitHub Actions.
  • Follow Agile methodologies, code review practices, and software development best practices.
  • Ensure application accessibility, localization, security, and high performance.

Required Skills &Qualifications

  • 8+ years of experience in mobile and web application development.
  • Strong expertise in Swift, SwiftUI, Objective-C, and Java.
  • Hands-on experience with ReactJS, TypeScript, JavaScript, HTML, and CSS.
  • Experience integrating RESTful APIs.
  • Knowledge of MySQL, SQLite, Firebase, and Realm.
  • Experience with Xcode, Fastlane, Git, GitHub, Bitbucket, and SVN.
  • Familiarity with XCTest, XCUITest, and Jest.
  • Experience implementing CI/CD using Jenkins and GitHub Actions.
  • Proven experience deploying applications to the Apple App Store and Google Play Store.
  • Strong debugging, profiling, and performance optimization skills.

Preferred Qualifications

  • Experience with Firebase Authentication, Cloud Messaging, and Analytics.
  • Knowledge of software architecture patterns such as MVVM.
  • Familiarity with Test-Driven Development (TDD) and Continuous Integration.
  • Understanding of accessibility, localization, and internationalization.
  • Experience working in Agile/Scrum environments.
Original job Senior Mobile & Web Developer (iOS Android React) posted on GrabJobs ©. To flag any issues with this job please use the Report Job button on GrabJobs.
Share Job
Share Job

About the Company

QUANTUM INFOTECH SOLUTIONS PTE. LTD.

At Quantum Infotech, we provide technology-empowered business solutions for our clients with demanding technical needs and challenges. Our key objective is to build trust with clients for life: long-term enterprise relationships that deliver impacting and lasting business value.  Our highly-skilled...

Read more about the company
💰

Technology Salaries

Similar Jobs in Singapore

GrabJobs is the no1 job portal in Singapore, connecting you to thousands of jobs fast! Find the best jobs in Singapore, apply in 1 click and get a job today!

Mobile Apps

Copyright © 2026 Grabjobs Pte.Ltd. All Rights Reserved.