Sr. Software Engineer - Android (Kotlin)

Ingenico is the global leader in payments acceptance solutions, with more than three decades of experience. Its footprint gives scale to projects and talents. Innovation is part of our DNA and our diverse community of experts keep anticipating the evolution of commerce worldwide.

As the trusted technology partner for merchants, banks, acquirers, ISVs, payment aggregators and fintech customers, our world-class terminals, solutions and services enable the global ecosystem of payments acceptance.

At Ingenico, trust and sustainability are at the heart of everything we do.

Our team comprises 4,000+ people spread around the globe representing 60 different nationalities. We are proud of the diversity and professionalism of our employees. Whether they work in technical or business support functions, we believe in making the company and people successful, together.

Learn more about Ingenico at https://ingenico.com.

Overview:

We are looking for a Senior Android Developer with expertise in Kotlin to join our team. The ideal candidate should have a strong background in designing, developing, and maintaining high-performance Android applications. You will be responsible for leading development efforts, mentoring junior developers, and ensuring best practices in mobile app development.

Key Responsibilities:

• Design, develop, and maintain Payment applications on Android based POS devices using Kotlin.
• Collaborate with cross-functional teams to define, design, and deliver new applications/features.
• Write clean, scalable, and efficient code while following best coding practices.
• Optimize application performance, memory usage, and battery efficiency.
• Ensure high-quality UI/UX implementation in collaboration with designers.
• Debug and resolve software defects, ensuring application stability.
• Implement and maintain MVVM/MVP architecture and dependency injection frameworks like Dagger/Hilt.
• Integrate RESTful APIs, third-party services, and networking components into mobile applications.
• Work with Jetpack components, Coroutines, Flow, and Room database.
• Stay updated with the latest Android trends, frameworks, and best practices.
• Mentor and guide junior developers in coding, design, and development methodologies.
• Participate in code reviews, sprint planning, and Agile development processes.

Required Skills & Qualifications:

• 6+ years of experience in Android development.
• Strong proficiency in Kotlin and Android SDK.
• Strong understanding of MVVM/MVP architecture and design patterns.
• Hands-on experience with Room database, Retrofit, and RESTful APIs.
• Experience with dependency injection frameworks like Dagger/Hilt.
• Proficiency in Git, CI/CD pipelines, and Agile methodologies.
• Strong knowledge of networking concepts, including TCP/IP, HTTP, HTTPS, Web Sockets, and SSL/TLS.
• Experience integrating secure authentication mechanisms, such as OAuth, JWT, and token-based authentication.
• Strong debugging and performance optimization skills.
• Knowledge of unit testing and automation testing frameworks.
• Excellent problem-solving, analytical, and communication skills.

Good to Have:

• Experience working with Payment applications on POS devices (Ingenico, Verifone, PAX etc).
• Experience in EMV, NFC, and ISO 8583 protocols for secure transactions.
• Experience with cryptographic security concepts like DUKPT, AES, RSA, and HMAC.
• Familiarity with security best practices in mobile app development.