Sr Software Engineer

Job Description Summary

We are looking for a highly skilled and motivated Senior Android Engineer to join our Mobile team. In this role, you will design, build, and maintain high-quality Android applications that are used by hundreds of millions of customers worldwide. You will be a key technical contributor, mentor to junior engineers, and a collaborative partner across product, design, and backend teams.

• Delivers complete solutions spanning all phases of the Software Development Lifecycle (SDLC) (design, implementation, testing, delivery and operations), based on definitions from more senior roles.
• Advises immediate management on project-level issues
• Guides junior engineers
• Operates with little day-to-day supervision, making technical decisions based on knowledge of internal conventions and industry best practices
• Applies knowledge of technical best practices in making decisions

• 3+ years relevant experience and a Bachelor’s degree OR Any equivalent combination of education and experience.

• Design, develop, and deliver robust, scalable, and high-performance Android features for Pay Pal's consumer-facing mobile applications.
• Lead end-to-end feature development from technical design through deployment and monitoring in production.
• Write clean, maintainable, and well-tested Kotlin/Java code adhering to SOLID principles and Pay Pal engineering standards.
• Collaborate with Product Managers, UX Designers, and backend engineers to translate requirements into elegant technical solutions.
• Conduct thorough code reviews and provide constructive feedback to peers, fostering a culture of quality and continuous improvement.
• Champion best practices in mobile architecture (MVVM, MVI, Clean Architecture) and advocate for performance, security, and accessibility.
• Partner with QA and Release Engineering to ensure smooth CI/CD pipelines and high-quality releases.
• Identify and proactively resolve performance bottlenecks, memory leaks, and stability issues.
• Mentor junior and mid-level engineers through pairing, technical discussions, and documentation.
• Contribute to technical roadmap discussions and influence strategic decisions within your team.

• Bachelor's or Master's degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience.
• 7+ years of professional software engineering experience, with at least 5 years focused on Android development.
• Strong proficiency in Kotlin; solid working knowledge of Java.
• Deep understanding of Android SDK, Jetpack libraries (View Model, Live Data/State Flow, Room, Navigation, Compose), and Android lifecycle management.
• Hands-on experience with modern Android architectural patterns (MVVM, MVI, Clean Architecture).
• Experience with RESTful API integration, JSON parsing, and handling asynchronous programming using Coroutines and Flow.
• Solid understanding of dependency injection frameworks (Hilt or Dagger).
• Experience writing unit tests, integration tests, and UI tests (JUnit, Espresso, Mockito).
• Familiarity with CI/CD pipelines, version control (Git), and agile development methodologies.
• Strong problem-solving, debugging, and analytical skills.

• Experience with Jetpack Compose for building modern, declarative UIs.
• Familiarity with mobile security best practices including secure storage, certificate pinning, and OAuth/PKCE flows.
• Experience in fintech, payments, or other high-security, high-availability mobile domains.
• Contributions to open-source Android projects or published apps on the Google Play Store.
• Experience with A/B testing frameworks and feature flagging tools.
• Knowledge of accessibility standards (WCAG) and building inclusive mobile experiences.
• Experience working with cross-functional teams across multiple time zones.