PLC Software Developer

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

WHO ARE WE?

L&T Technology Services Limited (LTTS) is a global leader in Engineering and R&D (ER&D) services. With 719 patents filed for 57 of the Global Top 100 ER&D spenders, LTTS lives and breathes engineering. Our innovations speak for themselves – World’s 1st Autonomous Welding Robot, Solar ‘Connectivity’ Drone, and the Smartest Campus in the World, to name a few.

LTTS’ expertise in engineering design, product development, smart manufacturing, and digitalization touches every area of human lives - from the moment one wakes up till the time one goes to bed. With 69 Innovation and R&D design centres globally, we specialize in disruptive technology spaces such as 5G, Artificial Intelligence, Collaborative Robots, Digital Factory, and Autonomous Transport.

We are looking for someone with key skills and able to perform the following roles & responsibilities :-

PLC Software Developer

Bergen, Norway

Key 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 (e.g., S7‑1500F) 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.

Required Technical Skills:

• 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.
• Exposure to motion‑compensated or offshore machinery is a strong advantage.
• Experience in lifting and transport domain.