Senior Android Engineer (POS)
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Job Location:
Monthly Salary:
Experience Required:
Posted on:
4 days ago
Vacancies:
1 Vacancy
Job Summary
The Senior Android Developer (POS) is responsible for designing developing and optimizing Android - based Point
of Sale (POS) applications with a strong focus on payment integrations and hardware interaction. The role
requires deep expertise in POS ecosystems (Sunmi & PAX) secure payment technologies and smart card
integrations .
1. POS Application Development
- Design develop and maintain Android POS applications for Sunmi and PAX devices.
- Handle device - specific integrations including printers card readers scanners and peripherals.
- Optimize application performance for embedded POS environments with limited resources.
- Ensure compatibility across different POS SDKs and hardware architectures .
2. Payment & Transaction Processing
- Implement and manage payment flows using EMV (contact & contactless) standards.
- Integrate transaction messaging using ISO - 8583 protocols.
- Ensure secure handling of financial transactions in compliance with industry standards.
- Troubleshoot and resolve transaction - related issues in production environments.
3. Smart Card & NFC Integration
- Develop and maintain integrations with prepaid utility cards.
- Work with:
NFC / APDU communication. - IFARE DESFire and CPU cards
- Ensure secure card communication and data handling.
- Optimize card reading performance and reliability.
4. Architecture & Code Quality
- Design scalable and maintainable Android architectures using Java & Kotlin.
- Enforce coding standards best practices and secure development principles.
- Conduct code reviews and ensure high - quality deliverables.
- Lead technical design discussions and solution architecture.
5. Cross - Platform & SDK Adaptation
Navigate and adapt to differences between Sunmi and PAX SDKs including:
- Printing frameworks
- Card reader APIs
- Peripheral handling
- Build reusable components to standardize development across devices
6. Collaboration & Stakeholder Management
- Work closely with product QA and backend teams to deliver end - to - end solutions.
- Collaborate with external vendors and payment providers when needed.
- Provide technical guidance and mentorship to junior developers.
Requirements
- Bachelors degree in Computer Science Software Engineering or a related field.
- 3 - 5 years of Experience in a similar role.
- Proven hands-on experience with POS systems (Sunmi & PAX)
- Experience in payment integrations and fintech environments is highly preferred.
- Strong proficiency in Java with solid experience in Kotlin
- Hands-on experience with:
-EMV (contact & contactless)
-ISO-8583 messaging
-NFC / APDU communication
-MIFARE DESFire CPU cards
- Strong understanding of Android SDK architecture patterns and performance optimization
- Experience working with hardware-integrated applications
Required Skills:
Bachelors degree in Computer Science Software Engineering or a related field. 3 - 5 years of Experience in a similar role. Proven hands-on experience with POS systems (Sunmi & PAX) Experience in payment integrations and fintech environments is highly preferred. Strong proficiency in Java with solid experience in Kotlin Hands-on experience with: EMV (contact & contactless) ISO-8583 messaging NFC / APDU communication MIFARE DESFire CPU cards Strong understanding of Android SDK architecture patterns and performance optimization Experience working with hardware-integrated applications
