09th October, 2026
JOB SPEC TEMPLATE
LEAD INFORMATION
- Job Title Senior / Principal Drainage Infrastructure Engineer
- Site location Cardiff
- Responsible to Senior Leadership Team / Associate Director
- Purpose of the role To support and help lead the delivery of civil engineering drainage design across a diverse portfolio of infrastructure projects, with a focus on SuDS and surface water management.
- Client brief Our client is a well-established, multi-disciplinary engineering consultancy seeking to grow their Cardiff team with a technically strong and forward-thinking drainage engineer who can contribute to both project delivery and team development.
KEY INFORMATION
- Reason for vacancy Business growth and expansion of the drainage infrastructure team
- Contract Permanent
- Salary £50,000-£57,000 per annum depending on experience
- Shifts Monday - Friday (Agile / flexible working available)
- Holidays 24 days + bank holidays (including Christmas closure) +1 additional day per 5 years' service
- Facilities Modern office environment with flexible / hybrid working options
RESPONSIBILITIES
- Assist in leading the delivery of civil engineering design across infrastructure projects
- Lead surface water and foul water drainage strategies and detailed designs
- Deliver SuDS and conventional drainage solutions
- Manage multiple concurrent projects and prioritise deliverables
- Provide technical support and assist with resource planning
- Support, mentor and develop junior engineers
- Liaise with statutory bodies including Natural Resources Wales and the Environment Agency
- Manage Water Authority approval processes (S104, S106, etc.)
- Build and maintain strong client and stakeholder relationships
REQUIREMENTS / EXPERIENCE
- 7+ years' experience in surface and foul water design and/or construction
- Strong knowledge of Sewers for Adoption and Design Manual for Roads and Bridges
- Degree in Civil Engineering (Masters preferred)
- Chartered status with ICE or CIWEM (or close to completion)
- Proficient in:
- MicroDrainage
- InfoDrainage
- AutoCAD
- Civils 3D
- Autodesk ICM
- Experience with:
- S104 and S106 approval processes
- SuDS Approval Body (SAB) approvals
- National Planning Policy and flood risk management
- Demonstrable leadership and team management capability
- Strong written and verbal communication skills
- Ability to work independently and collaboratively
- Proactive and methodical problem-solving approach
BENEFITS
- Competitive salary
- Agile and flexible working arrangements
- 24 days holiday + bank holidays + Christmas closure
- Additional leave for long service
- Life insurance and life assurance
- Health care cash plan
- Contributory pension (5% employee / 7% employer)
- Professional membership fees paid (ICE, CIWEM, etc.)
- Structured pathway to chartership
- External training and regular CPD
- Social and wellbeing initiatives
- Paid volunteer time
Serply Recruitment Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. We are committed to equal opportunity and diversity.
Senior / Principal Drainage Infrastructure Engineer - Cardiff employer: Serply Recruitment
Join a well-established manufacturer in Ellesmere Port as a Quality Assurance Operative, where you will be part of a supportive and team-oriented environment dedicated to maintaining high product standards. With ongoing work opportunities and potential for long-term placement, this role offers a chance for personal and professional growth while contributing to continuous improvement initiatives. Experience the satisfaction of ensuring quality and safety in a fast-paced manufacturing setting, all while being part of a company that values its employees.
