engineering
Posted Dec 22, 2025Lead Sustenance Engineer
at Qualys
Pune, IndiaOn-site
Responsibilities
- Maintain and enhance core components of a network vulnerability scanning engine written in C/C++.
- Investigate, debug, and resolve complex issues in production and development environments, including networking, containerization, and system-level interactions.
- Optimize existing code for performance, reliability, and scalability.
- Ensure compatibility and stability across evolving environments (OS, libraries, containers).
- Collaborate with product management, QA, DevOps, and security researchers to triage issues and deliver timely fixes and updates.
- Support CI/CD pipelines and automation for regression testing and deployment.
- Maintain and improve Dockerized environments for consistent deployment and testing. Required
Requirements
- Qualifications Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.
- Strong proficiency in C/C++ with a focus on systems-level programming and debugging.
- Solid understanding of networking fundamentals (TCP/IP, sockets, HTTP, SMB, SSH, etc.).
- Experience with Linux systems programming, performance tuning, and debugging tools (e.g., gdb, strace, perf). Hands-on
- experience with Docker and containerized environments. Strong analytical and problem-solving skills with a focus on root cause analysis and long-term fixes. Preferred
- experience in sustaining or support engineering roles for security or networking products.
- Familiarity with Kubernetes and container orchestration tools.
- Understanding of secure coding practices and cryptographic libraries.
- Experience with cloud platforms such as AWS, OCI, or Azure. Passion for automation and scripting to reduce manual effort and improve reliability.
Additional details
- Come work at a place where innovation and teamwork come together to support the most exciting missions in the world!
- About the Role We are looking for a seasoned Software Engineer – Sustenance Engineering to support and enhance our network vulnerability scanning platform.