Senior Process Commissioning Engineer: Wastewater Start-up

American Society of Civil Engineers; West of England; On-site; GBP 55,000 - 75,000; Full time

Job summary

American Society of Civil Engineers seeks a Senior Process Commissioning Engineer to join the commissioning team on a major capital programme in Avonmouth. You will lead commissioning plans, risk assessments, and stakeholder interfaces to ensure on-time delivery and regulatory compliance.

The role requires extensive experience in wastewater process commissioning within the UK, plus strong safety leadership and capability to mentor junior engineers on site.

Qualifications

• Extensive multi-year experience in process commissioning on large projects.
• Experience in process commissioning and wastewater within the UK water sector.
• Experience in anaerobic/mesophilic and acid phase digestion.
• Experience in gas production and associated process safety and MOC requirements.
• Technical knowledge of Sequence Batch Reactors, including operation and commissioning.
• Awareness of COMAH is essential.
• Willingness to lead critical hazard studies prior to and during commissioning.
• Level 4 WAMITAB is desirable but not essential.
• Previous experience in laboratory testing of wastewater samples would be advantageous but not essential.
• Strong stakeholder management and communication skills.
• Ability to work effectively with project teams, operations, contractors and suppliers.
• Strong commitment to health, safety and wellbeing.
• The successful candidate will need to be site based.

Responsibilities

• Develop and execute commissioning plans for new wastewater assets.
• Develop and review Process Risk Assessments (PRAs) and RAMS.
• Manage commissioning costs, resources and delivery schedules.
• Support outage planning and live operational integration activities.
• Coordinate project, operations, contractor and supplier interfaces.
• Verify commissioning readiness and site acceptance criteria.
• Supervise pre-commissioning, dry testing and wet testing activities.
• Coordinate process start-up, optimisation and performance testing.
• Develop and manage process sampling and laboratory testing plans.
• Analyse commissioning and performance data to support optimisation.
• Ensure compliance with environmental permits and regulatory requirements.
• Lead pollution prevention and environmental risk mitigation activities.
• Promote and demonstrate strong health, safety and wellbeing leadership.
• Challenge unsafe behaviours and ensure compliance with safe systems of work.
• Deliver operational training and support competency transfer.
• Coordinate asset handover and operational readiness activities.
• Produce commissioning reports, trackers and progress updates.
• Escalate programme, safety and delivery risks where necessary.
• Develop effective relationships with project teams, operations and contractors.
• Contribute to continuous improvement, standardisation and lessons learned.
• Mentor junior engineers and support team capability development.
• Provide technical leadership throughout design, delivery, commissioning and handover.

Skills

Process commissioning

Wastewater UK

Stakeholder management

Health and safety leadership

MOC awareness

Education

Level 4 WAMITAB

Tools

RAMS

PRAs

MOC compliance

Job description

American Society of Civil Engineers seeks a Senior Process Commissioning Engineer to join the commissioning team on a major capital programme in Avonmouth. You will lead commissioning plans, risk assessments, and stakeholder interfaces to ensure on-time delivery and regulatory compliance.

The role requires extensive experience in wastewater process commissioning within the UK, plus strong safety leadership and capability to mentor junior engineers on site.