Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Design and develop PLC software for innovative ammonia cracking systems.
- Company: Join a growing clean-energy engineering business focused on next-gen technology.
- Benefits: Competitive salary, bonus scheme, private healthcare, flexible hours, and 25 days holiday.
- Other info: Enjoy a high-impact role with real autonomy in a hybrid working environment.
- Why this job: Be part of scaling cutting-edge energy technology from prototype to commercial success.
- Qualifications: Experience in industrial automation and strong PLC programming skills required.
The predicted salary is between 60000 - 75000 £ per year.
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.
Location: Cranleigh, Surrey (Hybrid)
Type: 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, drop me a message or contact me at lewis@cranleighstem.co.uk
Locations
Senior PLC Software Engineer in Cranleigh, Surrey employer: Cranleigh STEM, Sustainability & SHEQ Recruitment
Contact Detail:
Cranleigh STEM, Sustainability & SHEQ Recruitment Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior PLC Software Engineer in Cranleigh, Surrey
✨Tip Number 1
Network like a pro! Reach out to your connections in the clean-energy sector or related fields. Attend industry events, webinars, or even local meetups to get your name out there and learn about potential job openings.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your PLC programming projects, especially those related to ammonia cracking systems or similar technologies. This will give you an edge when discussing your experience during interviews.
✨Tip Number 3
Prepare for technical interviews by brushing up on your fault-finding and debugging skills. Be ready to discuss real-world scenarios where you've solved complex problems, as this is key for a Senior PLC Software Engineer role.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, it shows you're genuinely interested in joining our team and contributing to cutting-edge energy technology.
We think you need these skills to ace Senior PLC Software Engineer in Cranleigh, Surrey
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with PLC programming and industrial automation. We want to see how your skills align with the role, so don’t be shy about showcasing your relevant projects!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you’re passionate about clean energy and how your background makes you the perfect fit for our Senior PLC Software Engineer position. Let us know what excites you about the role!
Showcase Problem-Solving Skills: In your application, give examples of how you've tackled complex engineering challenges in the past. We love candidates who can own problems and improve processes, so share those success stories with us!
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates. Plus, we can’t wait to hear from you!
How to prepare for a job interview at Cranleigh STEM, Sustainability & SHEQ Recruitment
✨Know Your PLCs Inside Out
Make sure you brush up on your PLC programming skills, especially with Siemens S7 and TIA Portal. Be ready to discuss specific projects where you've designed and developed PLC software, as well as any challenges you faced and how you overcame them.
✨Showcase Your Problem-Solving Skills
This role is all about owning problems and improving processes. Prepare examples of how you've tackled complex issues in previous roles, particularly in industrial automation or chemical processing. Highlight your fault-finding and debugging experiences to demonstrate your hands-on expertise.
✨Understand the Full Lifecycle
Familiarise yourself with the entire software development lifecycle, from design to commissioning. Be ready to discuss how you've contributed at each stage, and think about how you can bring structure and rigour to their development processes.
✨Connect with Multidisciplinary Teams
Since you'll be working closely with mechanical, electrical, and systems engineering teams, prepare to talk about your collaborative experiences. Share how you've integrated PLC systems with wider control architectures and how you’ve supported data acquisition and system connectivity in past projects.