Principal Mobile Engineer (POS Terminal)

What you will do:

• Lead the design and architecture of POS terminal solutions, ensuring security, scalability, performance, and integration with various hardware and payment systems.
• Develop and maintain architectural documents and diagrams for POS terminal systems, ensuring all platforms are well documented and up to date.
• Make architectural decisions on POS terminal software, integrating various payment technologies, EMV standards, and ensuring hardware compatibility.
• Lead the development of POS-related applications
• Optimize system performance and security, particularly around payment processing and EMV protocols.
• Participate in planning sessions with product and engineering teams to ensure solutions meet market needs and business goals.
• Conduct code reviews and ensure best practices for mobile and embedded systems development, especially for Android Native development.
• Define and enforce software engineering best practices across the POS and related teams to improve efficiency and developer productivity.
• Ensure the stability and reliability of POS terminal products and applications, monitoring system performance and troubleshooting as necessary.
• Provide technical mentorship to engineering teams, helping them grow their skills and contribute to the broader technical vision.
• Participate in the hiring process, screening engineers with expertise in POS systems, mobile, and embedded development.

To succeed in this role, we think you should have:

• At least 8 years of experience in system design, architecture, and development, specifically in the POS terminal domain.
• Strong expertise in Android Native development (Java/Kotlin), with a deep understanding of Android-based POS terminal solutions.
• Experience in cross-platform mobile development, such as Flutter, and familiarity with other POS application platforms (e.g., C, JavaScript) is a plus.
• Strong knowledge of EMV (Europay, Mastercard, and Visa) security protocols, including chip-based transactions, encryption, and key management.
• Experience with hardware integration for POS devices, such as card readers, pin pads, printers, and other peripherals.
• Deep understanding of payment systems architecture, including integration with payment processors and gateways.
• Knowledge of software quality assurance principles and their application in financial systems.
• Excellent problem-solving skills with an ability to manage complex system interactions and adapt to changing requirements.
• Strong communication skills, capable of presenting complex technical concepts clearly to both technical and non-technical stakeholders.
• Leadership abilities with a focus on mentoring engineers and driving process improvements within the team.