Senior Software Engineer, C++ | NMS

NinjaOne is hiring a Senior C++ Software Engineer to join its Network Management Service team. The role focuses on building cross-platform software for Windows and Linux that discovers and monitors network devices, processes network data, and communicates with network infrastructure at scale. The engineer will develop performance-sensitive systems, implement network protocols, own testing, and collaborate with backend, UI, QA, and product teams.

Responsibilities:

• Cross-Platform Development: Build and maintain software for Windows and Linux using C++ and Qt, with native platform-specific implementations where appropriate. This may involve Windows APIs, POSIX, networking APIs, and other OS-specific facilities
• Network Discovery and Monitoring: Design and implement features for discovering network devices, collecting device and interface information, and monitoring network health
• Network Protocols: Work with protocols such as SNMP, SSH, ICMP, WMI, and other network and device management protocols. Implement and troubleshoot protocol interactions and handle the differences between vendors and devices
• Systems Programming: Develop high-performance, concurrent C++ software that runs close to the network and communicates with potentially thousands of devices
• Performance and Reliability: Design asynchronous workflows, optimize resource usage, and ensure reliability under large numbers of concurrent network operations
• Testing Ownership: Design and implement unit, integration, and system-level tests. Make testability and quality an integral part of the development process
• Technical Collaboration: Work with backend, UI, QA, and product teams to define requirements and design solutions that work reliably across different operating systems, network environments, and device vendors
• Troubleshooting: Investigate complex issues involving C++, operating systems, network protocols, customer environments, and interactions between multiple components of the NMS platform
• Other Duties as needed

Requirements:

• Bachelor's degree in Computer Science, Engineering, Information Technology, or related technical field
• 7+ years of C++ development experience, with proficiency in C++ 14 or newer
• Strong understanding of modern C++ and experience writing production-quality, maintainable systems software
• Proficiency working with Qt and CMake
• Experience developing for Windows, Linux/POSIX and cross-platform environments
• Strong understanding of multithreading, concurrency, and asynchronous programming
• Experience with network programming and network protocols
• Familiarity with protocols and technologies such as SNMP, SSH, ICMP, WMI, or similar network/system-management technologies
• Experience in debugging and diagnosing problems across application, operating-system, and network layers
• Ability to develop comprehensive test cases and test plans, ensuring thorough coverage of all functional requirements
• Comfortable working on complex systems where behavior depends on operating system, network, and device-specific characteristics
• Collaboration with cross-functional teams to define technical requirements
• Experience working with highly critical systems
• This position is NOT eligible for Visa sponsorship
• Knowledge of SNMP is particularly valuable