Senior POS Mobile Engineer

Role Description

As a Senior Mobile Engineer (POS Terminal), you will be responsible for building, optimizing, and maintaining high-performance Android-based POS applications used across large-scale transaction environments. You will work closely with Mobile Architects, Backend Engineers, Product Managers, and Hardware teams to deliver reliable, secure, and scalable POS features. This role requires strong hands-on Android expertise, deep understanding of payment flows, and experience integrating with POS hardware and EMV standards. You will own complex features end-to-end while contributing to system design discussions and ensuring engineering excellence across the codebase.

What you’ll get to do

• Feature Development & Ownership
  • Design, implement, and maintain Android-based POS terminal applications (Java/Kotlin).
  • Own end-to-end development of key transaction flows (sales, refunds, reversals, settlement).
  • Collaborate with backend teams to integrate APIs and ensure reliable transaction synchronization.
  • Implement offline-first capabilities and manage edge-case handling in low-connectivity environments.
• Payments & Security
  • Integrate EMV chip, contactless (NFC), and card-present transaction flows.
  • Work with encryption standards, key management processes, and secure payment SDKs.
  • Ensure compliance with payment security best practices.
  • Troubleshoot and resolve transaction-related issues in production.
• Hardware Integration
  • Integrate and maintain support for POS peripherals (card readers, pin pads, printers, scanners).
  • Work with OEM SDKs for Android-based POS terminals.
  • Handle Bluetooth, USB, and embedded hardware communication layers.
• Code Quality & Engineering Standards
  • Write clean, maintainable, testable code following established architecture patterns.
  • Participate in code reviews and provide constructive feedback.
  • Contribute to improving CI/CD pipelines and release processes.
  • Support debugging, monitoring, and performance optimization efforts.
• Collaboration & Mentorship
  • Work cross-functionally with Product, QA, and Backend teams to deliver high-quality features.
  • Mentor mid-level engineers and support onboarding of new team members.
  • Participate in sprint planning, estimation, and technical discussions.

Qualifications

• Minimum of 5+ years of experience in Android app development.
• A degree in Computer Science, Engineering or a related subject.
• Strong expertise in Android Native development (Kotlin/Java).
• Experience building or maintaining POS terminal applications.
• Solid understanding of EMV standards and card-present transaction flows.
• Experience integrating payment SDKs and hardware peripherals.
• Familiarity with REST APIs, WebSockets, and background sync mechanisms.
• Experience with local storage solutions (Room, SQLite).
• Strong debugging and performance optimization skills.
• Understanding of secure coding practices in financial systems.
• Ability to work effectively in a fast-paced, high-ownership environment.
• Experience working in fintech or high-transaction environments.
• Exposure to cross-platform frameworks (e.g., Flutter).
• Experience working with Android-based embedded POS terminals.

Benefits

• Culture : We put our people first and prioritize the well-being of every team member. We’ve built a company where all opinions carry weight and where all voices are heard. We value and respect each other and always look out for one another. Above all, we are human.
• Learning : We have a learning and development-focused environment with an emphasis on knowledge sharing, training, and regular internal technical talks.
• Compensation : You’ll receive an attractive salary, pension, health insurance, paid leave plus other benefits.

What to expect in the hiring process

• A preliminary phone call with the recruiter.
• A take-home test exercise.
• A technical interview with a Lead in our Engineering Team.
• A behavioural and technical interview with a member of the Executive team.

Moniepoint is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees and candidates.