Control Logic and PLC Debugger

We are looking for a 𝗖𝗼𝗻𝘁𝗿𝗼𝗹 𝗟𝗼𝗴𝗶𝗰 𝗮𝗻𝗱 𝗣𝗟𝗖 𝗗𝗲𝗯𝘂𝗴𝗴𝗲𝗿. You'll build control logic debugging tasks around an automated machine, line or process cell you have worked on, so a leading AI company can measure how well models handle real embedded engineering problems.

𝗘𝗻𝗴𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗱𝗲𝘁𝗮𝗶𝗹𝘀:

• Location: Remote – EU and US
• Working model: Remote
• Start date: ASAP
• Employment type: Freelance – hourly rate: $70–90 (paid per accepted task)

𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀:

• Build a benchmark environment around an automated machine, line or process cell you have worked on
• Include the PLC program in ladder, structured text or function blocks (IEC 61131-3 or similar), the I/O map, device and drive datasheets, the sequence and interlock specification, alarm and event logs, and a simulator or test harness for the process
• Set up the tools the work needs – an IEC 61131-3 runtime or compiler such as OpenPLC or MATIEC, the process simulator, Python, PDF tools
• Write five or more tasks, each built on a sequence, interlock or recipe fault on that cell (e.g. a sequence that stalls when one sensor responds late, an interlock that can be bypassed on restart, a recipe change that breaks a dosing step)
• Frame each task so the model must work through the program and logs, change the logic, run it against the simulator, and deliver the patched program plus answer.json naming the change
• Write a hidden marking script that runs the patched program through the normal sequence and hidden fault scenarios – a late sensor, a drive trip, power loss mid-cycle, an operator restart – scoring 0.0 to 1.0 by the share that end in a safe and correct state
• Design tasks where the naive fix passes the normal sequence but fails a fault path
• Supply your own answer (scoring 1.0) and a naive answer a competent engineer might give first (scoring below 0.3)

𝗤𝘂𝗮𝗹𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀:

• Hands-on controls engineering experience on an automated machine, line or process cell
• Strong PLC programming skills in ladder, structured text or function blocks (IEC 61131-3 or similar)
• Experience designing and debugging sequences, interlocks and recipes
• Able to work from I/O maps, device and drive datasheets, and sequence and interlock specifications
• Experience diagnosing faults from alarm and event logs
• Comfortable with IEC 61131-3 runtimes or compilers such as OpenPLC or MATIEC, and process simulators or test harnesses
• Python skills to write automated marking scripts

𝗡𝗲𝘅𝘁 𝘀𝘁𝗲𝗽𝘀:

• Press "Apply"
• We will review your application
• If qualified, you will be accepted into the network and can be considered for this and similar positions & projects

We can only accept candidates that are willing to work as individual contractors / freelancers.