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 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
Desirable
- 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.
- High-impact, hands on engineering role.
- Flexible hybrid working with real autonomy.
- Opportunity to shape how control systems are developed as the business grows.
To apply or find out more
Contact Lewis at