Senior C++ Developer (Legacy)

Job description

ABOUT THE ROLE

In this role, you will contribute to improving the security and reliability of a healthcare product by analyzing security requirements and addressing vulnerabilities within a large legacy C++ codebase. Working closely with the client’s developers and architects, you will implement security fixes, maintain memory- and threading-sensitive components, and assess technical and regression risks. You will also contribute to code reviews, testing, debugging, and continuous integration, helping ensure the product remains secure, stable, and reliable.

RESPONSIBILITIES

- Analyze assigned security requirements and security findings

- Implement security-related changes in the healthcare product

- Remediate vulnerabilities such as unsafe input and length handling, buffer-overflow or memory-corruption risks, and SQL injection

- Work safely with a large legacy C++ codebase, including pointer-based and memory-sensitive logic

- Maintain and improve existing threading components

- Identify technical impact and regression risks before modifying existing functionality

- Participate in code reviews, testing, debugging, and troubleshooting

- Continuously integrate changes into the existing product and collaborate closely with the client’s developers and architects

REQUIREMENTS

- Strong commercial experience with C++, including mature or legacy C++ codebases

- Strong knowledge of low-level programming, pointers and pointer arithmetic, manual memory management, bounds checking, and memory safety

- Experience preventing or remediating buffer overflows, memory corruption, unsafe input handling, and similar native-code vulnerabilities

- Experience with threading/multithreading; the product is mostly single-threaded but contains threaded components

- Good understanding of object-oriented programming concepts

- Strong debugging and problem-solving skills

- Proficiency in close collaboration with architects, QA engineers, security experts, and existing product developers

- Experience with Qt or similar desktop GUI frameworks is an advantage

- Experience with Windows / Windows Server-based desktop or on-premises products is an advantage

- Good SQL knowledge and understanding of secure database access; Oracle Database experience is an advantage

- Experience with ISAM or other legacy data-storage technologies is an advantage

- Experience with secure software development and remediation of documented security findings is strongly preferred