Mobile App Engineer (iOS/Android)

Quantum Technologies. LLC; McLean (VA); On-site; USD 90,000 - 130,000; Full time

Job summary

Quantum Technologies. LLC in McLean, VA is seeking a Mobile Application Developer to design, build, and maintain high-quality mobile apps for Android and iOS. You will collaborate with product, design, and backend teams to deliver secure, performant experiences across devices.

The role requires strong Kotlin/Java for Android or Swift/Obj-C for iOS, with experience in app architecture, debugging, and API consumption. Opportunity to contribute to CI/CD, testing, and security-focused development.

Qualifications

• Proven experience building mobile apps for Android and/or iOS.
• Experience with RESTful APIs and Agile teams.
• Strong debugging, performance optimization, and architecture skills.

Responsibilities

• Design, develop, test, and maintain mobile apps for Android and/or iOS.
• Collaborate with product, design, and backend teams to release features.
• Integrate APIs and ensure reliable data handling and performance.
• Participate in code reviews and follow engineering best practices.

Skills

Android Development

iOS Development

API Integration

Tools

Android Studio

Xcode

CI/CD

Job description

Quantum Technologies. LLC in McLean, VA is seeking a Mobile Application Developer to design, build, and maintain high-quality mobile apps for Android and iOS. You will collaborate with product, design, and backend teams to deliver secure, performant experiences across devices.

The role requires strong Kotlin/Java for Android or Swift/Obj-C for iOS, with experience in app architecture, debugging, and API consumption. Opportunity to contribute to CI/CD, testing, and security-focused development.