Software Engineer - D&DC Land Systems

Round 1: Technical (coding & system design) → Round 2: Technical (system design & debugging) → Round 3: HR

L&T fosters a collaborative and inclusive work environment where engineers are encouraged to innovate and take ownership of projects. The company emphasizes continuous learning, mentorship, and a healthy work‑life balance, providing ample opportunities for professional growth and skill development.

Candidates usually undergo a three‑round interview process. The first round tests coding skills and basic data structures. The second round focuses on system design, debugging, and real‑time concepts. The final HR round evaluates cultural fit and communication skills. Preparation with coding practice and system design concepts is key to success.

Bachelor of Technology (B.Tech) or Bachelor of Engineering (B.E) in any branch with a minimum of 60% marks. No backlogs allowed. Candidates should be graduating in 2025 or 2026. Fresh graduates with a strong foundation in C/C++ and operating systems are preferred.

Larsen & Toubro (L&T) is a global conglomerate with a strong presence in engineering, construction, manufacturing, and technology solutions. The company has been a pioneer in delivering complex infrastructure and defense projects across India and abroad. With a focus on innovation and quality, L&T’s software arm, D&DC Land Systems, develops mission-critical applications for land-based defense systems and civil infrastructure. The team is known for its rigorous engineering standards, collaborative culture, and commitment to continuous learning. Role Summary The Software Engineer – D&DC Land Systems role is tailored for fresh graduates who are passionate about embedded and real‑time software development. You will work on designing, implementing, and maintaining software components that run on Linux, VxWorks, and QNX platforms. The position requires a strong foundation in C/C++ programming, multi‑threaded and multi‑process environments, and inter‑process communication. You will also be involved in debugging, performance tuning, and creating diagnostic tools to support field operations. Key Responsibilities 1. Design and develop robust C/C++ modules for embedded and real‑time systems. 2. Implement multi‑threaded and multi‑process solutions with thread safety and efficient resource management. 3. Utilize Linux, VxWorks, and QNX APIs for kernel‑level and user‑space programming. 4. Integrate and test communication protocols over Serial, Ethernet, 1553, CAN, NMEA, and ModBus. 5. Configure and troubleshoot IP protocols, VLANs, and Ethernet switching. 6. Build and maintain diagnostic and test code to enhance reliability and supportability. 7. Analyze system scalability, identify inter‑working issues, and perform root‑cause analysis. 8. Collaborate with cross‑functional teams to resolve customer site issues and provide timely fixes. 9. Document design decisions, code changes, and test results for knowledge sharing. 10. Participate in code reviews, knowledge transfer sessions, and continuous improvement initiatives. Tech Stack - Programming Languages: C, C++ - Operating Systems: Linux, VxWorks, QNX - Development Tools: Jira, Git, GDB, Valgrind - Communication Protocols: Serial, Ethernet, 1553, CAN, NMEA, ModBus - Networking: IP, VLAN, Ethernet Switching Growth Path Starting as a Software Engineer, you can progress to Senior Engineer, Technical Lead, or System Architect roles. L&T offers structured training programs, mentorship, and opportunities to work on high‑impact defense and infrastructure projects. The company encourages certifications and continuous learning, enabling engineers to specialize in embedded systems, real‑time computing, or network protocols. Why Join L&T? - Work on cutting‑edge defense and infrastructure projects that shape national security. - Access to world‑class training, mentorship, and career development pathways. - Collaborative environment that values innovation, quality, and teamwork. - Competitive compensation, comprehensive benefits, and a culture that balances professional growth with personal well‑being.