Job Description
Rakuten International is a division of Rakuten Group, Inc., a Japanese global technology leader in services that empower individuals, communities, businesses and society. Headquartered in San Mateo, California with more than 4,000 employees worldwide, the Rakuten International business portfolio includes market leaders in e-commerce, digital marketing, advertising, communications and entertainment. We create products and services that provide exceptional value by aligning members and the businesses that want to engage them in a shared community.
Rakuten is the most rewarding way to shop, giving millions of members Cash Back when they buy from their favorite brands. As a leading shopping platform, Rakuten partners with thousands of top brands across apparel, beauty and wellness, grocery, travel, on-demand services, subscriptions, and dining, helping members save on everyday purchases. Since 1999, Rakuten members have earned more than $4.6 billion in Cash Back, making it the largest Cash Back platform of its kind. Learn more at Rakuten.com.
Job Summary
We are seeking a visionary Principal Android Engineer to lead the evolution of our client application architecture and platform capabilities. You’ll define and drive the technical direction for Android across core frameworks, dynamic rendering systems, and design system integrations that power scalable mobile experiences.
You will collaborate closely with product managers, designers, and engineering teams to deliver high-performance, accessible, and localized mobile applications. As a technical leader, you will shape reusable application frameworks, UI component systems, and SDK integrations that enable consistent and high-quality implementations across multiple client platforms.
This high-impact position influences architectural standards, mentor engineers, and champion best practices in performance, accessibility, localization, multi-region capabilities and platform scalability. If you are passionate about building foundational mobile platforms, enabling engineering excellence, and shaping the future of large-scale mobile applications, we want you on our team.
In this role, you will design, develop, and maintain software applications to meet user needs and business objectives. You will analyze requirements, write clean and efficient code, and collaborate with cross-functional teams to deliver scalable and user-friendly applications. Your role will involve debugging and improving existing applications, ensuring optimal performance, and integrating new features to enhance functionality. With a strong foundation in application development and problem-solving skills, you will contribute to creating innovative solutions that align with organizational goals.
Key Responsibilities
- Advises senior management of strategic opportunities and risks associated with emerging technologies and industry trends.
- Applies advanced knowledge of software engineering principles to develop and implement solutions that meet complex business objectives.
- Conducts advanced research and analysis to identify innovative approaches for improving system performance and scalability.
- Consults on critical design and development decisions to ensure alignment with organizational strategy and compliance standards.
- Devises robust architectures and frameworks that optimize application functionality and future scalability.
- Leverage and guide adoption of modern AI and machine learning strategies, including generative AI and intelligent automation, to enhance developer productivity, optimize application capabilities, and drive innovation in mobile platform solutions.
- Directs team to implement best practices and adhere to established standards for coding, testing, and deployment.
- Define standards and best practices for API integration and client-service communication to ensure scalability, reliability, and maintainability across mobile platforms.
- Drives cross-functional collaboration to ensure successful execution of high-priority projects.
- Facilitates knowledge-sharing sessions to mentor less-experienced team members and advance organizational technical expertise.
- Masters emerging technologies and adapts them to enhance the organization’s competitive position in the market.
- Define and drive the long-term Android platform technical roadmap aligned with product strategy and business objectives.
- Establish and participate in architecture governance and technical design review processes to ensure consistency, scalability, and adherence to engineering standards across client platforms.
- Evaluate, pilot, and guide adoption of emerging technologies, frameworks, and tools that improve platform capabilities and developer productivity.
- Identify, prioritize, and mitigate technical risks and architectural debt that could impact platform scalability, performance, and maintainability.
- Drive improvements in developer experience (DX) through better tooling, automation, documentation, and reusable platform capabilities.
Qualifications
- Expert in Android SDK, Android Studio, Kotlin, and Java.
- Deep understanding of Android OS concepts, UI/UX and security best practices, and performance optimization.
- Strong knowledge of architectural patterns such as MVVM, MVP, or Clean Architecture.
- Experience with modularization, dependency injection (e.g., Dagger or Hilt), and reactive programming (e.g., RxJava, Coroutines).
- Experience building large-scale, event-driven architectures using tools like Event Bus, LiveData, RxJava, or Coroutines/Flows
- Expert with XML Views/Jetpack Compose.
- Strong background in Agile methodologies, continuous improvement, and process automation.
- Experience in coordinating with cross-functional teams to drive process improvements and ensure product quality.
- Expertise in writing robust, maintainable, and testable code. Experience with code reviews, debugging, unit testing (using frameworks like JUnit, Robolectric), and UI testing (using Espresso).
- Experience with global app deployments, feature flags, A/B testing, analytics and working in a monorepo environment
- Portfolio of published applications on GitHub and/or the Play Store.
- Experience leveraging AI tools and technologies to optimize or redesign engineering workflows, delivering measurable improvements in efficiency, quality, or productivity.
- Familiarity with responsible and ethical AI practices, including risk assessment, bias mitigation, and ensuring quality, transparency, and accuracy in AI-assisted solutions.
- Commitment to continuous AI skill development, including experience with prompt and context engineering.
What You’ll Own
- Global Strategic Partnership:Consult with business leaders worldwide to prioritize and solve complex, variable-factor problems.
- Executive Presence & Facilitation:You are the face of your programs. You will own meetings with senior leadership, facilitate high-stakes discussions, and drive consensus. We value your ability to manage expectations, provide clear, concise communication, and follow through with a rigor that requires minimal oversight.
- Change Leadership:As a catalyst for improvement, you will proactively identify issues, perform root-cause analyses, and implement solutions that evolve our business operations.
What You Bring
- Proven Track Record: 8+ years of experience (or equivalent combination of education and experience). You have a history of navigating complex organizational structures and resolving issues that require more than a "textbook" approach.
- Communication Mastery:You possess the ability to distill complex data into actionable insights for leadership. You know when to seek input from senior stakeholders and when to lead with confidence.
- Analytical Rigor:You are comfortable working on issues where variables are constantly shifting, and you have the critical judgment to select the right techniques to achieve success.
- Global Mindset:You understand that one size rarely fits all. You apply global nuances to your strategies, ensuring our programs are effective, inclusive, and scalable.
- Continuous Improvement:You are proactively identifying opportunities to improve programs, processes and ways of working.
- Measurement and Impact:You define success measures, evaluate effectiveness, and use data/insights to continuously improve outcomes.
Why This is a Career-Defining Opportunity
- Innovation-First:You aren't just managing existing processes; you are designing the future of learning and AI capability at Rakuten.
- Global Influence:You will facilitate decisions that impact employees across every region, acting as a key advisor to leadership on how we scale our culture and technical skills.
- End-to-End Ownership:From vendor selection and strategic planning to global rollout and adoption, you will own the full lifecycle of these initiatives, providing you with a platform to showcase your leadership and strategic vision.
Five Principles for Success
- Always improve, Always Advance - Only be satisfied with complete success - Kaizen
- Passionately Professional - Take an uncompromising approach to your work and be determined to be the best
- Hypothesize - Practice - Validate - Shikumika - Use the Rakuten Cycle to succeed in unknown territory
- Maximize Customer Satisfaction - The greatest satisfaction for our teams is seeing their customers smile
- Speed!! Speed!! Speed!! - Always be conscious of time - take charge, set clear goals, and engage your team
Rakuten provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type. Rakuten considers applicants for employment without regard to race, color, religion, age, sex, national origin, disability status, genetic information, protected veteran status, sexual orientation, gender, gender identity or expression, or any other characteristic protected by federal, state, provincial or local laws.
As part of our Rakuten interview process, we encourage applicants to use their own words, rather than AI-generated content. Tell us your story in a way that's personal and authentic.
At the time of posting, Rakuten expects the base compensation for this role to be within the range shown below. Individual compensation will vary based on job-related factors, including the skills, qualifications, and experience of the successful candidate as well as business need and geographic location. The successful applicant for this role will be eligible for discretionary bonus, health, vision, dental insurance, 401k matching, PTO, Volunteer Time Off (VTO), and other employee benefits as the company implements.
USD $91,044.00 - $157,248.00 annually