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 • 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 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 • 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. #LI-Remote