Senior Android Developer

Quantum Technologies. LLC; Atlanta (GA); On-site; USD 140,000 - 190,000; Full time

Job summary

Quantum Technologies. LLC is seeking an experienced Senior Android Developer to build scalable, secure Android apps for enterprise-grade banking and financial services.

You will design, develop, and optimize features, collaborating with UI/UX, backend, and QA teams to deliver robust mobile solutions. The ideal candidate brings 14+ years of software development, expert Kotlin/Java skills, and strong focus on security, performance, and API integrations.

Qualifications

• Minimum 14+ years of software development experience.
• Proven Android app development with Kotlin/Java.
• Experience with Android SDK, Android Studio, Jetpack components.
• Banking/financial services domain experience mandatory.
• Strong communication and problem-solving skills.

Responsibilities

• Design, develop, and maintain native Android apps.
• Build scalable, high-performance mobile applications using Kotlin and Java.
• Integrate RESTful APIs and backend services.
• Implement secure authentication, authorization, and data encryption.
• Optimize performance, usability, and responsiveness.
• Collaborate with UI/UX designers, backend developers, and QA teams.
• Conduct debugging, testing, and maintenance.
• Adhere to Android best practices and security standards.

Skills

Android development

Kotlin

Java

Security & data encryption

Performance optimization

REST API integration

Team collaboration

Problem solving

Communication

Tools

Android SDK

Android Studio

Jetpack components

Retrofit

JSON

Git

CI/CD

Testing

Job description

We are seeking an experienced Senior Android Developer with strong expertise in developing scalable, secure, and high-performance Android applications. The ideal candidate should have experience building enterprise-grade mobile applications, preferably within the banking and financial services domain.

Key Responsibilities:

• Design, develop, and maintain native Android applications.
• Build scalable and high-performance mobile applications using Kotlin and Java.
• Develop and integrate RESTful APIs and backend services.
• Implement secure authentication, authorization, and data encryption mechanisms.
• Optimize application performance, usability, and responsiveness.
• Work closely with UI/UX designers, backend developers, and QA teams.
• Perform debugging, testing, and application maintenance.
• Follow Android development best practices and security standards.

Required Skills:

• 14+ years of overall software development experience.
• Strong hands-on experience in Android Application Development.
• Expertise in Kotlin and Java.
• Experience with Android SDK, Android Studio, and Jetpack components.
• Knowledge of MVVM / Clean Architecture.
• Experience with REST APIs, Retrofit, JSON, and API integrations.
• Hands-on experience with Android Jetpack, Coroutines, and Kotlin Flow.
• Experience with Git, CI/CD, and mobile application testing.
• Knowledge of mobile application security and performance optimization.
• Financial Services / Banking domain experience is mandatory.
• Strong communication and problem-solving skills.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.