Senior POS Mobile Engineer

Moniepoint Inc. is Africa’s all-in-one financial platform, helping 20 million businesses and individuals access seamless payments, banking, credit, cross-border, and business management tools each month. It is Nigeria’s largest merchant acquirer, processing over $250 billion in digital payment transaction value annually through its subsidiaries.

• 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 using 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 such as 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 such as Flutter.
• Experience working with Android-based embedded POS terminals.

Feature Development & Ownership:

• Design, implement, and maintain Android-based POS terminal applications using Java/Kotlin.
• Own end-to-end development of key transaction flows including sales, refunds, reversals, and 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 such as card readers, pin pads, printers, and 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.