Job Title: Control & Instrumentation Engineer Working Location: Guildford (Site-Based) Contract Type: Permanent Why This Role Stands Out ✔ Work on a live operational asset (not just office-based design) ✔ Strong focus on SIS, PLCs, and functional safety ✔ Mix of troubleshooting, upgrades, and project work ✔ Opportunity to lead small projects and influence improvements ✔ Close working with operations and maintenance teams Key Responsibilities - Supporting and improving process control systems and Safety Instrumented Systems (SIS) - Working on PLC / DCS systems (including Siemens, Allen Bradley, Honeywell) - Delivering control system upgrades and modifications - Producing SIL documentation, SRS, and verification work - Supporting plant troubleshooting and root cause analysis - Ensuring compliance with IEC 61508 / 61511 standards - Supporting hazardous area instrumentation (ATEX environments) - Working closely with operations, maintenance, and engineering teams - Supporting commissioning, testing, and system improvements Requirements - Experience in Control & Instrumentation / Control Systems within process, energy, or industrial environments - Hands-on experience with PLCs / DCS (Siemens, Honeywell, ABB, etc.) - Strong understanding of SIS and functional safety (IEC 61508 / 61511) - Experience working on or su...