Lead Sofware Engineer (C++ & QT)

About the Role 

We are looking for a Team Lead / Senior Software Engineer -C++/Qt/ Real-Time Systems to design, develop, and integrate high-performance desktop software applications for mission-critical operational environments. 

The role requires strong hands-on experience in Modern C++, Qt, real-time data visualization, middleware integration, networking, multithreading, plugin-based architecture, and Linux-based application development. 

The candidate should be comfortable working on complex C++/Qt applications involving real-time data feeds, tactical visualization, distributed communication, custom graphics, and system-level integration. The required skill set is aligned with the shared requirement for C++/Qt/QML, database queries, software standards, testing, integration, configuration management, and SDLC documentation. 

Key Responsibilities 

• Design, develop, and maintain high-performance C++/Qt desktop applications. 

• Build modular and extensible software components using plugin-based architecture. 

• Develop real-time visualization modules using Qt Widgets, 

• QGraphics View/QGraphicsScene, QOpenGLWidget, OpenGL, and/or QML. 

• Implement real-time data ingestion and communication using DDS middleware, UDP, TCP, and multicast sockets. 

• Design shared in-memory data models for correlating and fusing data from multiple sources. 

• Implement multi-threaded processing using QThread, QtConcurrent, and thread- safe signal-slot mechanisms. 

• Ensure that background communication, data processing, and integration logic do not block the GUI thread. 

• Optimize rendering performance for dynamic objects, tactical overlays, status indicators, history trails, and interactive map/graphics views. 

• Implement user interaction features such as selection, context menus, hover telemetry, zooming, panning, and live status updates. 

• Work with Linux-based build and deployment environments using CMake/qmake. 

• Perform unit testing, integration testing, debugging, and performance tuning. 

• Maintain software documentation including SRS, SDD, ICD notes, design documents, test reports, and configuration records. 

• Follow software development standards, version control practices, and SDLC processes. 

Required Skills  

• Strong programming experience in Modern C++: C++11/14/17, OOP, STL, templates, smart pointers, RAII, and memory management. 

• Hands-on experience with Qt Framework: Qt Widgets, Qt Creator, signal-slot mechanism, event loop, custom widgets, and Qt Designer. 

• Experience with QGraphics View/QGraphicsScene for real-time 2D visualization. 

• Experience with QOpenGLWidget/OpenGL for high-performance rendering. 

• Working knowledge of QML and C++ integration is preferred. 

• Strong understanding of multithreading in Qt, including QThread, QtConcurrent, queued connections, and thread-safe UI updates. 

• Experience with UDP/TCP socket programming, 

• Experience or strong understanding of DDS middleware such as eProsima Fast DDS, RTI Connext, or OpenDDS. 

• DDS IDL authoring and code generation defining topic types, running code generators (fastddsgen or equivalent), integrating generated types into a C++ build 

• Experience building multi-source data correlation logic using shared in-memory models keyed by a common entity identifier, where updates from independent sources must be merged consistently 

• High-throughput real-time data publishing on dedicated background threads experience sustaining thousands of structured updates per second without blocking the main application 

• Experience designing plugin-based software architectures using dynamic loading, interfaces, or factory patterns. 

• Strong understanding of software design patterns such as MVC, Observer, Factory, Singleton, Strategy, Command, Facade, and Proxy. 

• Experience with CMake/qmake, Git, Linux development, debugging, and integration workflows. 

• Ability to read and interpret ICDs, technical specifications, SRS, and SDD documents. 

• Experience in embedded, defense, or system-level applications. 

• Prior experience in aerospace or defense technology 

• Experience in defence, aerospace, radar, GIS, simulation, surveillance, or command- and-control systems. 

• Experience with real-time tactical displays or moving-object visualization. 

• Experience handling high-frequency data updates in GUI applications. 

• Experience with UDP multicast, DDS IDL, QoS configuration, and publish-subscribe communication. 

• Experience with OpenGL shader programming.