Mott Macdonald
A global engineering, management, and development consultancy delivering innovative solutions.
Principal Mechanical Engineer
Lead multidisciplinary team to deliver wastewater design projects for UK water utilities.
Job Highlights
About the Role
The Design Manager will lead a multidisciplinary team delivering the wastewater programme within a newly appointed UK water consultancy framework, ensuring projects are on time, on budget, and technically excellent while engaging closely with client leadership. The role also offers the chance to mentor talent and develop future‑proofed digital services.
Key Responsibilities
- ▸team leadership
- ▸wastewater design
- ▸project delivery
- ▸client engagement
- ▸mentoring
- ▸digital services
What You Bring
Candidates must hold Chartered Engineer status, possess deep knowledge of water and wastewater treatment technologies, and have proven engineering leadership experience. They should have delivered feasibility and outline designs in the UK water sector, support bids and review technical deliverables, and demonstrate strong communication with internal and client teams. Willingness to travel to client sites is required. • Chartered Engineer (CEng) status with a recognised professional institution • Knowledge of conventional and innovative water/wastewater treatment technologies • Proven engineering technical leadership • Experience delivering feasibility and outline design solutions in the UK water sector • Ability to support bids, fee proposals, and service offers • Capability to review technical deliverables, calculations and reports • Strong communication and collaboration with internal multidisciplinary and client teams • Willingness to lead client engagement and travel to client sites • Experience building and developing junior staff teams • Understanding of wastewater treatment sustainability and investment drivers in England and Wales • Excellent concise technical report writing skills
Requirements
- ▸chartered engineer
- ▸water treatment
- ▸technical leadership
- ▸feasibility design
- ▸bid support
- ▸communication
Benefits
Employees benefit from a comprehensive package covering health, financial, lifestyle, family leave, learning and development, and community networks. These offerings aim to support wellbeing, professional growth and contributions to society. • Private medical insurance for UK staff • Health cash plan covering everyday health costs • Free access to Peppy menopause support • Comprehensive wellbeing program for employees and families • Salary‑flex option to opt into extended health benefits for family • Employer pension matching 4.5‑7 % of contributions • Life assurance up to 4× salary (extendable to 6×) • Income protection with long‑term illness support • Flexible benefits including critical illness cover, payroll saving and will writing • Annual bonus schemes sharing business success • Minimum 33‑35 days annual holiday (incl. public holidays), with buy/sell option • Holiday entitlement rises to at least 35 days after 5 years • Employee saving schemes and high‑street retailer discounts • 26 weeks paid maternity/adoption leave; 2 weeks paid paternity/partner leave • Shared parental leave up to 24 weeks at full pay • Up to 5 extra days for significant caring responsibilities (2 paid) • Annual subscription to professional institution • Mentoring, formal training and self‑development opportunities for technical and soft skills • Access to employee networks supporting LGBTQ+, gender, race, disability, and parent/carer communities
Work Environment
Hybrid