Executive / Asst. Manager - PLC / HMI Program Developer

Larsen & Toubro • Civil & Structural Engineering • Engineering Services • Travel required • 3 days ago

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Location

In office (Coimbatore)

Confirmed on the employer's own hiring board on Oct 24, 2026. First seen by Alion on Jul 18, 2026. Larsen & Toubro scores B on the Alion truth index.

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Larsen & Toubro

Larsen & Toubro is an Indian multinational conglomerate with businesses in engineering, construction, heavy manufacturing, technology services and financial services. It builds infrastructure, power, hydrocarbon and defence projects worldwide and owns technology subsidiaries such as LTIMindtree and L&T Technology Services. Founded in 1938, the company is headquartered in Mumbai, Maharashtra, India.

larsentoubro.com • HQ: Mumbai, India • Engineering Services • Construction • Civil & Structural Engineering • 1001-5000 employees • Est. 1938

Tech stack of Larsen & Toubro

Executive / Asst Manager - PLC / HMI Program Developer:

Responsible for developing, testing, commissioning, and supporting PLC, HMI, and industrial automation solutions for machine and process automation projects. The ideal candidate should possess strong hands-on experience in PLC programming, HMI development, system integration, troubleshooting, and site commissioning.

Key Responsibilities

PLC Programming & Automation

Develop, modify, debug, test, and optimize PLC programs for industrial machinery, process plants, and automation systems.
Design and implement machine sequences, interlocks, safety functions, diagnostics, and control strategies.
Perform I/O allocation, field device integration, hardware configuration, and system commissioning.
Configure and integrate PLC communication networks and third-party devices.

HMI Development

Design and develop intuitive, user-friendly HMI/SCADA interfaces.
Implement alarm management, trend displays, recipe handling, system diagnostics, and data logging functions.
Configure communication between HMI and PLC using standard industrial protocols.

Testing & Commissioning

Conduct Factory Acceptance Tests (FAT) and Site Acceptance Tests (SAT).
Troubleshoot and resolve automation-related issues during installation, startup, and commissioning.
Work closely with mechanical, electrical, and commissioning teams to ensure successful project execution.
Provide technical support during customer acceptance and production ramp-up.
Travel to customer sites for installation, commissioning, and technical support as required.

Documentation & Quality

Prepare and maintain PLC software documentation, functional descriptions, I/O lists, control narratives, test procedures, and commissioning reports.
Maintain software version control, backups, and change management records.
Ensure compliance with project specifications, safety standards, and company engineering practices.

Advanced Technologies

Support integration of robotics, vision systems, and motion control applications.
Participate in Industry 4.0 and IIoT initiatives, including data acquisition, diagnostics, and remote monitoring solutions.

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