Lead Mechanical Engineer

Are you ready to lead the design of bold, future-proof Water Engineering across the UK’s commercial, residential, and infrastructure sectors? Ayesa is looking for a Lead Mechanical Engineer to join our dynamic team in the UK, preferably in our London office. You will drive high-impact projects from concept through to construction and help grow our Water engineering capability in the region.

With operations in over 40 countries and 13,000+ professionals, Ayesa is a global leader in engineering and digital transformation. Our teams shape cities through high-speed rail systems, iconic bridges, resilient infrastructure, and sustainable water and energy solutions — all powered by cutting-edge tech and a culture of innovation.

What You’ll Be Doing

As a Lead Mechanical Engineer, you will lead and deliver Wastewater and Water design packages across diverse sectors including commercial, residential, education, healthcare, and public infrastructure.

Key Responsibilities

• Management of relationships with key clients and contacts across the business including client liaison and development
• Management of projects within time, cost and quality constraints and standards
• Management of the day-to-day work of the team
• Champions and promotes professional advice, guidance and support across the business
• Monitors and manages compliance and KPI’s
• Estimating, pricing and delivering against work targets
• Management of engineering outsource partners

What You Bring

• Member of a relevant professional body e.g. IMechE, CIWEM
• Demonstrate level of competence in mechanical and instrumentation design in the water/wastewater industry environment
• Demonstrate a level of competence in practical mechanical installation experience in the water/wastewater industry environment
• Minimum of 10 years’ experience working in a similar role in the water and wastewater industry
• A good understanding of modular build construction processes and procedures
• Experienced in the installation, commissioning and proving of mechanical, electrical, instrumentation, control and automation (MEICA) systems
• Experience of Water, Wastewater and Sludge Treatment Centres
• Demonstrate knowledge of all relevant standards, regulations and codes of practice
• Extensive site experience of water and recycling operations
• Ability to use own initiative, problem solve and adjust as issues arise during the project life cycle
• An experienced manager of people and teams, developing others, and managing staff welfare
• Experience, or a strong understanding of construction, procurement, and commissioning

What’s in It for You

• Hybrid Work Model (2–3 days from home)
• Flexible Hours 37.5 per week (Core: 10am–4pm Mon–Thu, 10am–3pm Fri)
• Professional Development and Chartership Support
• Employee Assistance Programme (EAP)
• Sustainability & Innovation-Focused Culture
• Generous Annual Leave with Additional Days Based on Service

We’re Inclusive by Design

Ayesa is proud to be an equal opportunity employer. We value and celebrate diversity in all its forms, including but not limited to age, disability, gender identity, race, religion or belief, sex, sexual orientation, and socio-economic background or neurodiversity. We believe that a diverse workforce fosters innovation and stronger outcomes. We are committed to inclusive hiring practices, providing reasonable adjustments for applicants and employees with disabilities, and ensuring equal access to opportunities for learning, development, and progression across our organisation.