Principal Mobile Engineer – POS Terminal

• Lead the design and architecture of POS terminal solutions
• Ensure security, scalability, performance, and integration with hardware and payment systems
• Develop and maintain architectural documents and diagrams
• Make architectural decisions involving payment technologies, EMV standards, and hardware compatibility
• Lead development of POS-related applications
• Optimize system performance and security around payment processing and EMV protocols
• Participate in planning sessions with product and engineering teams
• Conduct code reviews and enforce best practices for mobile and embedded systems development
• Ensure stability and reliability of POS terminal products and applications
• Monitor system performance and troubleshoot issues
• Provide technical mentorship to engineering teams
• Participate in hiring and screen engineers specializing in POS, mobile, and embedded development

• 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)
• Deep understanding of Android-based POS terminal solutions
• Experience in cross-platform mobile development such as Flutter
• Familiarity with C and JavaScript for POS application platforms is a plus
• Strong knowledge of EMV security protocols, including chip-based transactions, encryption, and key management
• Experience integrating hardware for POS devices, including card readers, pin pads, printers, and other peripherals
• Deep understanding of payment systems architecture, including payment processors and gateways
• Knowledge of software quality assurance principles and their application in financial systems
• Ability to manage complex system interactions and adapt to changing requirements
• Strong communication skills for presenting technical concepts to technical and non-technical stakeholders
• Leadership abilities focused on mentoring engineers and driving process improvements

• Attractive salary
• Pension
• Health insurance
• Annual bonus
• Learning and development-focused environment
• Knowledge sharing, training, and regular internal technical talks