Senior POS Mobile Engineer

Job Application for Senior POS Mobile Engineer at Moniepoint

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.

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.

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.
• 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.