Software Engineer – D&DC Land Systems

L&T’s interview process typically starts with a timed online aptitude and coding test, followed by a technical interview focusing on C/C++ concepts, operating systems, and embedded system design. The final HR round assesses communication skills and cultural fit. Candidates should practice problem‑solving under time pressure and be ready to discuss projects involving real‑time OS or hardware interfacing.

L&T promotes a disciplined yet collaborative work culture where engineers are encouraged to innovate within structured processes. Employees benefit from clear career ladders, regular skill‑upgradation programs, and a balanced approach to work‑life integration.

B.E. / B.Tech in Computer Science, Electronics & Communication, Electrical, Mechatronics or related engineering disciplines; minimum 60% aggregate (or equivalent CGPA); graduation batch 2022‑2025; no active backlogs at the time of application; freshers and candidates with up to 2 years of relevant experience are eligible.

Round 1: Online aptitude & programming test → Round 2: Technical interview (coding, OS, embedded concepts) → Round 3: HR interview (fitment, communication, expectations)

Larsen & Toubro (L&T) is one of India’s largest multi‑discipline engineering conglomerates, delivering end‑to‑end solutions across infrastructure, heavy engineering, defence, and technology services. With a legacy spanning over eight decades, L&T has built a reputation for pioneering large‑scale projects, from skyscrapers and metros to advanced defence platforms. The company’s culture blends rigorous engineering standards with a focus on innovation, offering employees a platform to work on mission‑critical systems that impact the nation’s growth and security. The D&DC (Defence & Defence Communications) Land Systems division specializes in developing cutting‑edge solutions for land‑based defence platforms, including command‑and‑control, navigation, and communication subsystems. As a Software Engineer in this division, you will be part of a high‑performance team that designs, implements, and validates embedded software for rugged, real‑time environments. This role is ideal for fresh graduates or engineers with up to two years of experience who are eager to apply their C/C++ skills to defence‑grade products while gaining exposure to real‑time operating systems such as VxWorks, QNX, and Linux. **Key Responsibilities** 1. Design, develop, and maintain embedded software modules using C and C++. 2. Implement real‑time tasks, multithreading, and inter‑process communication on VxWorks/QNX/Linux platforms. 3. Conduct unit testing, integration testing, and system‑level validation of software components. 4. Debug complex issues using tools like GDB, JTAG, and oscilloscopes, performing root‑cause analysis. 5. Develop drivers and communication stacks for Ethernet, CAN, Serial, ModBus, and NMEA protocols. 6. Collaborate with hardware, system, and test engineers to ensure seamless integration of software and hardware. 7. Participate in code reviews, maintain documentation, and adhere to coding standards and safety guidelines. 8. Contribute to continuous improvement initiatives, suggesting optimizations for performance and reliability. 9. Support field deployments, troubleshoot issues on-site, and provide technical assistance to customers. 10. Track project milestones using Jira and maintain version control using Git. **Tech Stack**: C, C++, Linux, VxWorks, QNX, Multithreading, Real‑time OS, Embedded Linux, Ethernet, CAN, Serial, ModBus, NMEA, Git, Jira. **Growth Path**: Starting as a Software Engineer, you can progress to Senior Engineer, Lead Engineer, and eventually Architecture or Project Management roles within L&T’s defence portfolio. The company encourages continuous learning through internal training, certifications, and exposure to international defence projects. **Why Join L&T?** L&T offers unparalleled exposure to defence‑grade technologies, a robust learning ecosystem, and the chance to work alongside seasoned engineers on large‑scale, high‑impact projects. The organization’s commitment to employee development, competitive compensation, and a stable work environment makes it an attractive launchpad for a long‑term engineering career.