Principal Mobile Engineer (POS Terminal)

• At least 8 years of experience in system design, architecture, and development in the POS terminal domain.
• Strong expertise in Android Native development using Java or Kotlin, and a deep understanding of Android-based POS terminal solutions.
• Strong knowledge of EMV security protocols, including chip-based transactions, encryption, and key management.
• Experience integrating hardware 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 and the ability to manage complex system interactions and adapt to changing requirements.
• Strong communication skills, including the ability to present technical concepts to technical and non-technical stakeholders.
• Leadership abilities focused on mentoring engineers and driving process improvements.

Nice to have:

• Experience in cross-platform mobile development, such as Flutter.
• Familiarity with other POS application platforms, such as C and JavaScript.

• Lead the design and architecture of POS terminal solutions, ensuring security, scalability, performance, and integration with hardware and payment systems.
• Develop and maintain architectural documents and diagrams for POS terminal systems across platforms.
• Make architectural decisions on POS terminal software, integrating payment technologies, EMV standards, and 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.
• Conduct code reviews and ensure best practices for mobile and embedded systems development, especially Android Native development.
• Define and enforce software engineering best practices across the POS and related teams.
• Ensure the stability and reliability of POS terminal products and applications, monitoring performance and troubleshooting as necessary.
• Provide technical mentorship to engineering teams.
• Participate in the hiring process, screening engineers with expertise in POS systems, mobile, and embedded development.

• The hiring process includes a preliminary recruiter phone call, a take-home HackerRank test, a technical interview with the Engineering Team, a technical and behavioural interview with the Head of Mobile Engineering, and a behavioural and technical interview with an Executive team member.