Senior PLC Software Engineer

Cranleigh Scientific Ltd • waverley, england, United-Kingdom • Posted June 14, 2026

Location waverley, england
Job Type Full-time
Category Other-General
Posted June 14, 2026

Senior PLC Software Engineer – Cranleigh, Surrey (Hybrid) – Permanent, Full-time – Salary: £ Competitive + Benefits: 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 clos...

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