As a Senior Mobile Engineer (POS Terminal) at Moniepoint Inc., you will build, optimize, and maintain high-performance Android-based POS applications used in large-scale transaction environments, collaborating with Mobile Architects, Backend Engineers, Product Managers, and Hardware teams to deliver reliable, secure, and scalable POS features.
You will own complex features end-to-end, contribute to system design discussions, ensure engineering excellence, and work on payment flows, EMV standards, hardware integration, offline-first capabilities, and mentorship while adhering to security best practices and improving CI/CD pipelines.
Responsibilities
- Building, optimizing, and maintaining high-performance Android-based POS applications used across large-scale transaction environments.
- Work closely with Mobile Architects, Backend Engineers, Product Managers, and Hardware teams to deliver reliable, secure, and scalable POS features.
- Own complex features end-to-end while contributing to system design discussions and ensuring engineering excellence across the codebase.
- 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.
- 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
- 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.
- 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.
- 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.
Requirements
- 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.
- Strong hands-on Android expertise, deep understanding of payment flows, and experience integrating with POS hardware and EMV standards.
Nice to have
- 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.
Additional details
- 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.
- 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.
- Originally posted on Himalayas
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