L&T Land Systems Software Engineer 2026, Mumbai

Larsen & Toubro is hiring a Software Engineer for its D&DC Land Systems group, and the requisition sits with L&T Precision Engineering & Systems IC in Mumbai. The experience band is 0 to 2 years, which puts it inside reach of a B.Tech graduate who has already written C or C++ close to the hardware. Applications close on 14 October 2026.

Everything below comes from what L&T published against requisition LNT/SE-LS/1713751. Where that posting says nothing, this page says nothing.

A defence software seat inside L&T Precision Engineering

Land Systems is the part of L&T that builds equipment for ground defence platforms, and D&DC sits inside it. The hiring entity on the requisition is written as DEIC-L&T Precision Engineering & Systems IC, with Mumbai as the posting location. The role went up on 17 April 2026 and carries an end date of 14 October 2026.

The skills block names five things: C, C++, VxWorks, Linux and Qt. Two of those are operating systems, one is a user interface toolkit, and the two languages are the ones you write against both. That combination places the job in embedded systems rather than in web or application development.

L&T has not published a salary figure against this requisition, so there is no company number to quote. The posting also does not name a batch year, state how many seats are open, or describe the selection rounds.

VxWorks, QNX and why the operating system list matters

The requirement asks for excellent control over operating system principles and names Linux, VxWorks and QNX. Linux is familiar to most graduates. The other two are less so, and they are the reason this job reads the way it does.

VxWorks and QNX are real-time operating systems. A real-time system is judged on whether it responds inside a guaranteed time, not on average speed. On a defence platform, a control loop that usually answers in one millisecond but occasionally takes fifty is a failure, even though the average looks fine. That guarantee is what a general purpose operating system does not offer and what these two are built to provide.

The posting pairs this with programming in a multi-thread and multi-process environment, and with inter-process communication. Those follow from the same setting. Several parts of the software run at once, each with its own timing obligation, and they have to exchange data without blocking one another.

Every task named on the requisition

L&T writes the work out as a list. In plain terms it covers the following.

• Design and implement tools that speed up software system development and the debug environment around it.
• Take part in fixing issues that come back from customer sites.
• Analyse system scalability and interworking problems, and run root cause analysis on system issues.
• Design and implement built-in diagnostics and test code that support reliability and serviceability.
• Work on distributed architecture systems where the parts communicate with each other.
• Handle communication over physical layer devices including Serial, Ethernet, 1553, CAN, NMEA and ModBus.
• Apply knowledge of IP protocols, VLANs and Ethernet switching.

The list of physical layer devices is worth reading twice. Serial and Ethernet are common. MIL-STD-1553 is a bus used on military platforms, CAN comes from vehicle electronics, NMEA carries navigation data, and ModBus is an industrial control protocol. A candidate who has touched any of these in a project has something concrete to put on the application.

Who L&T will consider

The minimum qualification printed on the requisition is B.Tech or B.E. The required experience is 0 to 2 years, so a fresher and someone two years in are both inside the band L&T has set.

Beyond the technical list, the posting asks for hands-on software development experience in large complex software systems, strong analytical, integration and debugging skills, and good oral and written communication with multitasking ability. For a candidate at the zero end of the experience band, academic and project work is the only place that evidence can come from, so the application should point at it directly.

We have filed this opening under engineering job listings, which is where the B.Tech and B.E requirement puts it.

The 14 October date and how to apply

The requisition carries an end date of 14 October 2026. That is the date L&T has printed, and it is the one to work back from. The posting went live on 17 April 2026, so this is a long window by the standards of most fresher openings, which usually run for two or three weeks.

Applications go through L&T's own careers portal against requisition LNT/SE-LS/1713751. Classic Jobs charges candidates nothing at any stage, and neither does L&T. Anyone asking for a payment to process this application is not connected to the company.

Graduates comparing embedded and systems roles can also look at the current openings for engineering graduates listed on this site.