Senior PLC Software Engineer

New Yesterday

A growing clean-energy engineering business is looking for a hands-on Senior PLC Software Engineer to support the development of next-generation ammonia cracking systems. This role will focus on developing and implementing PLC-based control systems as the business continues to transition from prototype into scalable, deployable products. You’ll be working across the full lifecycle from software design through to real-world commissioning playing a key role in ensuring systems operate reliably in live environments. This is a technical expert role, suited to someone who enjoys owning problems, improving development processes, and working closely with physical systems. Senior PLC Software Engineer Permanent, Full-time Bonus scheme, Private healthcare, Share Options, Pension contribution, 25 days holiday + bank holidays, Flexible hours, Life assurance What you’ll be doing
Designing and developing PLC software for ammonia cracking systems. Programming PLCs (Siemens S7 / TIA Portal preferred, others considered). Working within an existing system architecture, with increasing input over time. Defining and improving software development processes and standards. Producing structured, maintainable code (IEC 61131-3). Supporting software verification and validation (including simulation where applicable). Integrating PLC systems with wider control architecture (HMI, SCADA, instrumentation). Supporting and leading commissioning activities, fault finding and debugging on live systems. Working closely with multidisciplinary teams across mechanical, electrical and systems engineering. Supporting data acquisition and system connectivity where required.
What we’re looking for
Proven experience in industrial automation within Chemical processing or Manufacturing environments. Strong PLC programming experience (Siemens S7 ideal, others considered) Experience across the full lifecycle: design, development, testing and commissioning Strong fault finding and on-site debugging capability Experience working on complex engineered or process systems Ability to bring structure and rigour to software development processes Experience with simulation or software verification environments. Exposure to process systems, energy systems or similar technologies. Understanding of industrial communication protocols.
Why apply
Work on cutting-edge hydrogen and ammonia energy technology. Be part of scaling a novel technology from prototype to commercial deployment. Flexible hybrid working with real autonomy. Opportunity to shape how control systems are developed as the business grows.
To apply or find out more, drop me a message or contact me at lewis@cranleighstem.co.uk #J-18808-Ljbffr
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Location:
Waverley
Job Type:
FullTime

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