Who We Are

Worldline helps businesses of all shapes and sizes to accelerate their growth journey - quickly, simply, and securely. We are the innovators at the heart of the payments technology industry, shaping how the world pays and gets paid. Our technology powers the growth of millions of businesses across 5 continents. And just as we help our customers accelerate their business, we are committed to helping our people accelerate their careers. Together, we shape the evolution.

The opportunity

As a Software Engineer – C, C++, Linux & Database, you will be instrumental in developing high-performance applications and data processing systems that power our payment infrastructure. You will work on mission-critical systems that handle millions of transactions, designing robust C, C++ applications on Linux platforms while managing and analyzing large-scale data sets to ensure optimal performance and reliability.

Day-to-day Responsibilities

Develop and maintain high-performance C, C++ applications for payment processing and transaction systems.




Design and implement asynchronous network applications using Boost.Asio for real-time communication
Build low-latency systems with focus on microsecond-level performance optimization
Implement secure coding practices including input validation, encryption, authentication, and authorization mechanisms
Conduct security-focused code reviews to identify and remediate vulnerabilities (buffer overflows, SQL injection, memory leaks.

Who Are We Looking For

1–4 years of professional experience in software development with C, C++, Linux & Database
Strong proficiency in C, up-to-date C++ (C++11/14/17) with solid understanding of OOPS principles
Experience with Boost libraries, particularly Boost.Asio for asynchronous I/O operations
Hands-on experience with low-latency application development and performance optimization.
Proficiency in Linux operating systems and debugging commands.
Understanding of network programming and socket programmi

📌 Application Engineer (Chennai)
🏢 Worldline
📍 Chennai