United Infrastructure Ltd
Commissioning Engineer
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United Infrastructure Group
We are a dynamic and innovative specialist engineering services, solutions, and products provider focused on servicing our clients’ immediate and future needs. We do this through the development of industry-changing cleantech products as well as through engineering delivery excellence.
We specialise in the design and delivery of process, mechanical, electrical, and ICA engineering-based projects, products, and solutions. Regardless of the project, they all pursue the same goal: to improve the efficiency and sustainability of our water, wastewater, and waste treatment.
We have a team of highly skilled and experienced professionals with extensive consulting and contracting experience, including engineers, scientists, and commercial managers. Our knowledge and expertise spans more than 30 years, across industries including: water, wastewater, marine, energy, and power sectors. At AFECO, we cover all stages of the innovation and project delivery cycle from concept through to operations.
Our aim is simple – to provide the most effective solutions and products on the market and thus, exceed clients' expectations through market-leading technology. From technical through to commercial and management expertise, we have the in-house expertise to execute a range of projects from the most basic to highly complex.
Job Title: Commissioning Engineer
Location: Midlands
About Us
AFECO is an engineering services provider, delivering high-quality process and MEICA design and installation projects across the UK for the water industry. We have excellent in-house engineering teams capable of delivering all stages of the project cycle, from concept through to commissioning, with a strong focus on process-led innovative and robust yet appropriate solutions.
We have a portfolio of varied projects covering both wastewater and clean water projects for planned and reactive projects.
Due to the expansion of our team, we are currently recruiting for a Commissioning Engineer to work within our multi-disciplinary teams. This is a great opportunity for enthusiastic individuals who fit in with our company values and are keen to develop in a forward-thinking organization.
Role Overview
The Commissioning Engineer is responsible for planning, executing, and documenting the commissioning of mechanical, electrical, instrumentation, control, and process systems within water and wastewater treatment facilities. The role ensures that all systems operate safely, efficiently, and in accordance with design intent, regulatory standards, and client requirements. The engineer will play a key part in bringing new assets online, troubleshooting issues, and supporting handover to operational teams.
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Key Responsibilities
Commissioning Planning & Preparation
- Develop detailed commissioning plans, method statements, and risk assessments.
- Review technical drawings, process flow diagrams (PFDs), P&IDs, control philosophy documents, and OEM manuals.
- Coordinate with design, construction, and operations teams to ensure readiness for commissioning.
- Identify commissioning requirements, resources, and specialist tools.
Execution of Commissioning Activities
- Conduct pre-commissioning inspections, system checks, and verification tests.
- Commission mechanical, electrical, ICA (Instrumentation, Control & Automation), and process systems including:
- Pumps, blowers, mixers
- Chemical dosing systems
- Filtration and membrane systems
- UV disinfection
- PLC/SCADA systems
- Flow, pressure, level, and quality instrumentation
- Verify system functionality against design specifications.
- Troubleshoot and rectify mechanical, electrical, and process performance issues.
- Benchmark performance and optimize system operation prior to handover.
Documentation & Compliance
- Prepare commissioning progress reports, test sheets, and compliance records.
- Ensure all commissioning records meet water industry regulatory standards (e.g., DWI, MCERTS).
- Update red-line drawings and provide input to O&M manuals.
- Ensure all activities comply with CDM, health & safety legislation, and company procedures.
Stakeholder & Client Engagement
- Work closely with project teams, subcontractors, suppliers, and client representatives.
- Support Factory Acceptance Tests (FAT) and Site Acceptance Tests (SAT).
- Provide technical training and handover to operational staff.
Continuous Improvement
- Identify opportunities to improve commissioning processes and system design.
- Feed lessons learned back into design and delivery teams.
Skills, Competencies & Experience
Essential
- Proven experience commissioning systems within the water or wastewater industry.
- Strong understanding of mechanical, electrical, and ICA systems.
- Ability to interpret engineering drawings, P&IDs, control philosophies, and system documentation.
- Strong diagnostic, analytical, and problem-solving skills.
- Experience working on live operational water assets and construction sites.
- Excellent written documentation and report writing skills.
- Strong communication and stakeholder management abilities.
- Understanding of health, safety, and environmental requirements.
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Desirable
- Experience with major UK water companies
- Familiarity with AMP frameworks and regulatory drivers.
- Knowledge of water treatment processes (clarification, filtration, sludge treatment, chemical dosing, disinfection).
- Experience using SCADA systems (e.g., Wonderware, Siemens, Rockwell).
- Competence in instrumentation calibration and verification.
Qualifications
Essential
- HNC/HND or degree in a relevant field such as:
- Electrical Engineering
- Mechanical Engineering
- Process Engineering
- Control & Instrumentation
- CSCS/ECS card.
- Full UK driving license.
Desirable
- COMPEX, EUSR (Clean Water Hygiene), Confined Space, First Aid, or equivalent industry certifications.
- Membership of a professional engineering body (e.g., IMechE, IET).
- 18th Edition
- City & Guilds 2391 Test and Inspection
Personal Attributes
- Self-motivated with high attention to detail.
- Able to work autonomously and as part of cross-functional teams.
- Comfortable working under pressure and to tight project deadlines.
- Strong commitment to safety, quality, and continuous improvement.
Working Conditions
- Based at treatment works, pumping stations, or regional sites.
- Includes site visits, climbing ladders, confined space areas (with training).
- Participation in standby/rota call-out system may be required.
- Outdoor work in varying weather conditions.
Benefits
- Company Van
- Medicash plan
- Life insurance
- Benefits portal
- Company pension
- 26 days holiday (plus bank holidays)
At AFECO, we value our employee’s and encourage and support them to develop themselves and their career through training and progression. We offer the opportunity to work on a range of project types and size in the water sector including our own internally developed products and solutions. We are a privately owned business with a friendly and open culture and are dedicated to creating and maintaining a workforce that is highly skilled and motivated. As a Company, we are committed to equal opportunities for all and do not discriminate on the grounds of race, religion or belief, sexual orientation, gender reassignment, marital or civil partner status, sex, disability, or age.
Join us at AFECO and be part of our mission to deliver innovative and sustainable solutions to the complex infrastructure needs of the UK.
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