Senior POS Mobile Engineer

Who we are

Moniepoint is an all-in-one financial services platform for emerging markets and the second-fastest growing company in Africa.
Since 2019, Moniepoint’s technology has powered over 3 million people, offering personal and business banking, payment, credit and business management tools to help them succeed. Moniepoint processed $182 billion in 2023, and currently processes the majority of the POS transactions in Nigeria.

Curious about what makes Moniepoint an incredible place to work? Check out posts on how we cultivate a culture of innovation, teamwork, and growth.

About the role

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.

To succeed in this role, you should have

• 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 sto