Water System Flushing and Commissioning Engineer and Senior Engineer positions
££ South East / London
£££ Full-time | £32-50K + Excellent Benefits
££ Join a Great Team with the Backing of a Leading PLC
Are you an experienced Water System Flushing and Commissioning Engineer looking to take the next step in your career£
We’re a well-established, medium-sized business with a reputation for high standards, strong team ethic, and a supportive working environment. As part of a large PLC, we combine the agility and close-knit feel of a smaller company with the job security, progression opportunities, and excellent benefits that come from being part of a larger group.
££ The Role: You’ll be responsible for the flushing, cleaning, chlorination, and commissioning of closed loop and domestic water systems on a range of commercial and residential projects across London and the South East. Working closely with project managers and clients, you''ll play a key role in ensuring systems meet all relevant standards and specifications.
£ Key Responsibilities:

- Carry out pre-commission cleaning and flushing of closed water systems
- Chlorination and disinfection of domestic water systems
- Water sampling and testing to BSRIA and industry standards
- Completing detailed reports and commissioning documentation
- Liaising with clients, consultants, and site teams

££ What We’re Looking For:

- Experience in water system flushing and commissioning (BSRIA BG29/BG50 knowledge ideal)
- Strong understanding of water hygiene and regulations
- CSCS card (essential), and relevant water hygiene certification (preferred)
- Full UK driving licence
- Professional, reliable, and able to work independently or as part of a team

££ What We Offer:

- Competitive salary (based on experience)
- Company van + fuel card if needed/wanted
- Overtime opportunities x1.75
- Pension scheme
- 25 days holiday + bank holidays
- Ongoing training and development
- Clear career progression within a larger PLC structure
- A supportive and collaborative team culture

If you’re ready to join a team where your work is valued and your career is taken seriously, we’d love to hear from you.
Please only apply if experienced in pre com engineering. Contact danny.woodcock@fmcnetwork.co.uk