Associate Mechanical Engineer – Water Infrastructure

Associate Mechanical Engineer – Water Infrastructure Company Description

Job Title:

Associate Mechanical Engineer

Division:
Water

Location:

London

Ayesa is a global engineering consultancy with over 13,000 employees, where our UK & Ireland business combines international strength with the agility and autonomy of an SME.

With a presence in 40 countries, Ayesa has built a strong international reputation across a diverse range of engineering disciplines. Our expertise includes water and flood infrastructure, transportation, marine and coastal engineering, geoscience, environmental services, energy, and building structures.

Our UK & Ireland teams deliver technically challenging, varied projects that develop broad expertise without confining people to narrow roles — offering the opportunity to make a meaningful local impact while benefiting from the stability, knowledge, and career opportunities of a well-established global organisation.

At Ayesa, we’re driving innovation in the design and delivery of sustainable water and wastewater infrastructure. Our Mechanical Engineers play a key role in delivering efficient, resilient, and low-carbon engineering solutions across major UK utilities and infrastructure projects.

We’re looking for an experienced Associate Mechanical Engineer to lead design teams, oversee project delivery, and ensure technical excellence across the Water Infrastructure division.

The Opportunity

As an Associate Mechanical Engineer, you’ll lead multidisciplinary design teams in the delivery of mechanical systems for water, wastewater, sewage treatment plants, pumping stations, and network infrastructure. You’ll oversee design coordination, manage client relationships, and support the continued development of Ayesa’s UK Water Infrastructure capability.

• Lead mechanical design and delivery for water, wastewater, sewage and utility infrastructure projects
• Oversee design management, quality reviews, and integration with civil, electrical, and process disciplines
• Prepare technical specifications, mechanical schedules, and tender documentation
• Assist in appointment of specialist contractors and management of the specialist contractors team contracts to cost, time, quality & safety requirements.
• Collaboratively work with the design team, project management team, construction team and supply chain and provide mechanical installation expertise.
• Ensure all relevant standards, regulations and codes of practice are adhered to throughout the project life cycle.
• Manage the creation of the mechanical installation and procurement strategy to ensure all members of the team are aware of their responsibilities.
• Monitor and report on all progress on a weekly and monthly basis, including taking action to maintain delivery to time, cost, quality and safety requirements.
• Lead buildability, risk, opportunity and value engineering reviews.
• Develop new ways of working, reduce carbon, increase biodiversity, address climate change, and embrace innovations and new digital technologies

What You Bring

• Degree in Mechanical Engineering or a related discipline
• Chartered Engineer (IMechE or equivalent) or working towards chartership
• 10+ years’ experience delivering mechanical designs for water, wastewater, or utilities projects
• Demonstrate level of competence in mechanical and instrumentation design in the water / wastewater industry environment
• A good understanding of modular build construction processes and procedures, and experience of mechanical, electrical, instrumentation, control and automation (MEICA) systems.
• Experience leading multidisciplinary design delivery within D&B or consultancy environments
• Strong understanding of UK design standards, WIMES, codes, and CDM regulations

• Excellent communication and leadership skills.
• Strong knowledge of pump systems, mechanical equipment selection, and plant design.
• Ability to manage budgets, resourcing, and client expectations.
• Experience with BIM and digital design platforms (e.g., Revit, AutoCAD Plant 3D).
• Collaborative approach to problem solving and design delivery.

• Experience with major UK water…