Develop and maintain C/C++ POS payment applications, implementing sale, refund, void, reversal, settlement, and EMV contact and contactless flows. Build TCP/IP socket communication with payment hosts, integrate POS SDKs and peripherals, analyze logs, troubleshoot issues, support payment certification, and collaborate with testing, backend, and product teams.
Job Description – C/C++ Developer
Experience: 3–5 Years
Joining: Immediate joiners preferred
Location: Bangalore
Job Summary
We are looking for a C/C++ Developer with experience in payment applications and POS terminals. The candidate should have good knowledge of EMV, socket programming, data structures, and payment transaction processing.
Key Responsibilities
- Develop and maintain POS payment applications using C/C++.
- Implement payment transactions such as Sale, Refund, Void, Reversal, and Settlement.
- Integrate EMV Contact and Contactless payment flows.
- Develop TCP/IP socket communication with payment hosts and servers.
- Analyse logs and troubleshoot transaction and application issues.
- Integrate POS device SDKs and peripherals.
- Support host and payment certification activities.
- Write clean, secure, and maintainable code.
- Coordinate with testing, backend, and product teams.
Required Skills
- 3–5 years of C/C++ development experience.
- Experience in POS or payment application development.
- Knowledge of EMV Contact and Contactless transactions.
- Good understanding of data structures, pointers, memory management, and multithreading.
- Experience in TCP/IP socket programming.
- Basic knowledge of ISO 8583.
- Experience with Linux or embedded systems.
- Good debugging and problem-solving skills.
- Knowledge of Git or other version-control tools.
Preferred Skills
- Experience with RTOS or Linux-based POS devices.
- Knowledge of POS peripherals such as card readers, NFC, printers, and PIN pads.
- Knowledge of payment schemes such as Visa, Mastercard, RuPay, or AMEX.
- Understanding of payment security and key-management concepts.
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