PLC Software Engineer: Motion Control & Offshore Systems

L&T Technology Services; New Jersey; On-site; USD 73,000 - 105,000; Full time

Job summary

LTTS in Bergen, Norway seeks a PLC Software Developer to design and optimize PLC programs for motion control, safety functions, and offshore equipment. You will program using Siemens TIA Portal (LAD/FBD/SCL) and integrate frequency drives.

Candidates should have expert PLC programming skills, experience with motion control, fieldbus protocols, and OT cybersecurity practices. Familiarity with offshore machinery and lifting/transport applications is a strong plus.

Qualifications

• Expert-level PLC programming (Siemens TIA Portal preferred).
• Experience with motion control systems, encoders, load monitoring, and position feedback integration.
• Hands-on with frequency inverters (Siemens, ABB, Danfoss, or similar).
• Strong understanding of fieldbus protocols and real-time communication.
• Knowledge of sensor/actuator integration, interlocks, hydraulic/electromechanical equipment logic.
• Familiarity with OT cybersecurity—firewalls, VLANs, secure remote access, user authentication.

Responsibilities

• Develop and optimize PLC programs for motion control, load handling, and safety functions.
• Program using Siemens TIA Portal, including LAD/FBD/SCL, structured data types, and diagnostics blocks.
• Configure and integrate frequency drives, including closed-loop control, ramp profiles, torque limits, and safety torque off (STO).
• Implement safety logic using Safety PLCs for emergency stops, zone monitoring, and safe motion.
• Design and troubleshoot industrial communication networks (Profinet, Profibus, Ethernet/IP).
• Develop HMI/SCADA interfaces with advanced alarm handling, diagnostic pages, and user workflows.
• Participate in FAT/SAT, perform system tests, and support commissioning of offshore or motion-compensated equipment.
• Contribute to OT cybersecurity practices including network segmentation, access control, firmware/hardening compliance.

Skills

Siemens TIA Portal

PLC programming

Motion control systems

Frequency inverters

Fieldbus protocols

OT cybersecurity

Offshore machinery exposure

Lifting and transport domain

Job description

LTTS in Bergen, Norway seeks a PLC Software Developer to design and optimize PLC programs for motion control, safety functions, and offshore equipment. You will program using Siemens TIA Portal (LAD/FBD/SCL) and integrate frequency drives.

Candidates should have expert PLC programming skills, experience with motion control, fieldbus protocols, and OT cybersecurity practices. Familiarity with offshore machinery and lifting/transport applications is a strong plus.