Commissioning Engineer

Hernshead Recruitment Ltd; Greater London; On-site; GBP 55,000 - 75,000; Full time

Job summary

Hernshead Recruitment Ltd is seeking an experienced PLC Commissioning Engineer to support an automotive automation project in the Greater London area. The role focuses on commissioning, testing and troubleshooting of Siemens PLC‑controlled equipment, with emphasis on S7-300 and S7-400 and Siemens Classic experience during live production launches.

You will work on-site, fault finding under pressure, and collaborate with electrical, controls and commissioning teams to keep the ramp‑up on schedule

Qualifications

• Hands-on experience as PLC commissioning/controls engineer.
• Proven Siemens Classic PLC experience with S7-300 and S7-400.
• Strong fault-finding and on-site commissioning under pressure.
• Automotive manufacturing experience desirable.
• Good knowledge of electrical and industrial control systems.
• Ability to work independently and in a team.

Responsibilities

• Commission and test Siemens PLC-controlled machinery.
• Program, modify and troubleshoot S7-300 and S7-400 PLCs.
• Use Siemens Classic / STEP 7 (Simatic Manager).
• Debug PLC software and fault-find during commissioning.
• Support electrical and controls troubleshooting on lines.
• Collaborate with electrical, controls and commissioning teams.
• Assist with machine integration, start-up and ramp-up.
• Identify and resolve PLC, automation and control faults.
• Maintain safety while working in live automotive environment.

Skills

PLC commissioning

Siemens Classic PLC

S7-300

S7-400

STEP 7 / Simatic Manager

Fault-finding / Troubleshooting

On-site / field service

Automotive manufacturing experience

Tools

Simatic Manager / STEP 7

Job description

About this Position

We are currently looking for an experienced PLC Commissioning Engineer to support an automotive automation project. The role will focus on the commissioning, testing and troubleshooting of automated production equipment, with a strong requirement for Siemens Classic experience, particularly S7-300 and S7-400. This is a hands‑on commissioning position suited to an engineer who is comfortable working on‑site, fault finding under pressure and supporting the successful launch and ramp‑up of production equipment.

Job Responsibilities

• Commissioning and testing Siemens PLC-controlled automated machinery.
• Programming, modifying and troubleshooting Siemens S7-300 and S7-400 PLCs.
• Working with Siemens Classic / STEP 7 (Simatic Manager).
• PLC software debugging and fault finding during commissioning.
• Supporting electrical and controls troubleshooting on automated production lines.
• Working alongside electrical, controls and commissioning teams to resolve issues and keep the project on schedule.
• Supporting machine integration, start‑up and production ramp‑up.
• Identifying and resolving PLC, automation and control system faults.
• Working safely and efficiently within a live automotive manufacturing environment.

Experience Required

• Strong hands‑on experience as a PLC Commissioning Engineer / Controls Engineer.
• Proven experience with Siemens Classic PLC systems.
• Strong experience with S7-300 and S7-400 PLCs.
• Good working knowledge of STEP 7 / Simatic Manager.
• Previous experience commissioning automated machinery or production lines.
• Automotive manufacturing experience is highly desirable.
• Strong PLC fault‑finding and troubleshooting skills.
• Comfortable working on‑site and dealing with commissioning issues under time pressure.
• Able to work independently and as part of a wider commissioning team.
• Strong understanding of electrical and industrial control systems