Senior POS Mobile Engineer
Who we are
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.
As Nigeria’s largest merchant acquirer, we power most of the country’s point-of-sale (POS) transactions. Through our subsidiaries, Moniepoint Inc. processes over $250 billion in digital payment transaction value annually.
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
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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.
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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
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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.
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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.
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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 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.
What we can offer you
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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