Senior Process Engineer

Senior Process Engineer

Location: Canvey Island Terminal | Site-Based, 3 times per week minimum

Type: 12-Month Fixed Term

Salary: £55,000 - £66,000 (DOE)

Hours: 37.5
Pattern: Monday – Friday

Sector: Energy / LPG / High-Hazard Process Plant

Reporting to: Engineering Programme Manager

Calor is seeking an experienced Senior Process Engineer to support delivery of site-based capital projects at its Canvey Island LPG Terminal. This is a 12-month contract role, ideal for a senior process engineer with strong LPG knowledge, COMAH experience, and a background in design review and contractor interface.

You will act as the first layer of technical assurance on process design deliverables from external design contractors, ensuring solutions are safe, compliant, operable, and fully aligned with site requirements. The role sits at the interface between process design, projects, contractors, and site operations, requiring regular site presence and hands‑on engagement.

• Act as Calor’s process engineering focal for site projects at Canvey.
• Lead and review process design deliverables from FEED through Detailed Design, Construction, and Commissioning.
• Provide first‑line review and approval of contractor process deliverables including:
• Process Flow Diagrams (PFDs)
• P&IDs
• Process design calculations
• Datasheets and vendor documentation
• Process control and operating procedures
• Ensure all designs are practical, operable, and suitable for a live LPG terminal environment.

Plan and manage project transition from construction phase to commissioning to operations handover.

• Ensure compliance with COMAH, DSEAR, UKLPG Codes of Practice, and relevant UK/International standards.
• Lead or actively participate in HAZID, HAZOP, LOPA, SIL and PSSR activities, including close‑out of actions.
• Support COMAH Safety Case updates and engagement with regulators where required.
• Review and challenge all process control and safeguarding designs.

• Provide process engineering support across all project phases:
• FEED:
  Design basis, options studies, preliminary sizing.
• Detailed Design:
  Calculations, specifications, interdisciplinary coordination.
• Construction:
  Site queries, design clarifications, MOC support.
• Commissioning & Handover:
  Commissioning procedures, performance testing, operational readiness.
• Initiate change management process based on CALOR procedures and make technical justification for Calor discipline authority approval
• Interface daily with site operations, maintenance, project engineers, and construction teams.

• Act as interface between contractors and site operations team to ensure all procedures and work instructions for operating the asset are well documented and embedded.
• Challenge contractors constructively to ensure design quality, safety, and compliance.
• Support development of all handover documentation for new or modified assets and close out of Calor change management processes
• Drive lessons learned and continuous improvement across projects.

• Degree‑qualified engineer (Chemical / Process / Engineering discipline).
• Strong LPG process engineering experience.
• Experience in process engineering within LPG, gas processing, or downstream energy.
• Proven experience working on COMAH‑regulated sites.
• Demonstrable experience reviewing and assuring contractor design in EPC / EPCM environments.
• Strong working knowledge of:
• PFDs and P&IDs
• HAZID, HAZOP, LOPA, SIL studies
• Relief and vent systems
• Process safety systems and safeguarding
• Experience supporting commissioning and operational handover.
• Confident decision‑maker able to assess risk and challenge design solutions.
• Comfortable working in a live operational terminal environment.

• Chartered Engineer (CEng) or working towards.
• IChemE‑accredited qualification.
• Experience with LPG terminals, storage, vaporisation, and distribution systems.
• Strong experience in brownfield modifications and MOC processes.

• Long‑term 12-month assignment on a critical LPG terminal.
• High‑impact technical assurance role, not just advisory.
• Direct influence over contractor design quality and site safety.
• Regular site engagement with autonomy and authority.
• Complex, interesting brownfield project work in a regulated environment.

• Competitive salary
• Company and performance related completion bonus
• On‑site parking
• 25 days annual leave + 8 bank holidays
• Private Medical Insurance
• Matched pension contributions 4.5% rising to 7.5% after 2 years’ service
• Life Assurance (4x salary)
• Cycle to Work Scheme
• Access to retail discounts and wellbeing support

For a full list of our benefits visit: