Associate Mechanical Engineer – Water Infrastructure

Ayesa Group; Greater London; On-site; GBP 45,000 - 65,000; Full time

Benefits offered by this job

Flexible working hours

Employer pension match scheme

Training and development opportunities

Increased annual leave

Life assurance coverage

Job summary

Ayesa Group is looking for an experienced Associate Mechanical Engineer to join our Water Infrastructure division in London. This role involves leading multidisciplinary design teams on water, wastewater, and sewage treatment projects while ensuring technical excellence.

Candidates should have over 10 years of experience in mechanical design and a degree in Mechanical Engineering. We offer a competitive salary, flexible working arrangements, and opportunities for professional growth.

Qualifications

• 10+ years' experience delivering mechanical designs for water, wastewater, or utilities projects.
• Chartered Engineer (IMechE or equivalent) or working towards chartership.
• Demonstrate competence in mechanical and instrumentation design.

Responsibilities

• Lead mechanical design and delivery for water infrastructure projects.
• Oversee design management, quality reviews, and integration with other disciplines.
• Prepare technical specifications and tender documentation.

Skills

Communication and leadership

Pump systems knowledge

BIM and digital design platforms

Education

Degree in Mechanical Engineering

Tools

Revit

AutoCAD Plant 3D

Job description

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.

Position

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.

What You’ll Be Doing

• 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

Requirements

What You Bring

Experience & Qualifications

• 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

Skills & Strengths

• 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.

Bonus Points For

• Experience with major UK water utilities or regulated frameworks.
• Knowledge of sustainable design techniques and low-carbon technologies.
• Experience supporting bids and business development activities.

Other information

What’s In It for You

• Competitive Salary: We offer a competitive salary package to attract and retain top talent in the industry.
• Flexible Working: Enjoy flexible working hours and hybrid working, allowing you to achieve a better work-life balance.
• Employer Pension Match Scheme: We offer a pension match scheme to help you secure your financial future.
• Income Protection: Receive support in safeguarding your income in the event of illness or injury.
• Life Assurance: Gain peace of mind with life assurance coverage.
• Training and Development Programme: Access a range of training and development opportunities to enhance your skills and advance your career.
• Family & Well-Being Support: Benefit from our Enhanced Maternity & Paternity Benefits and our confidential support services to address personal or professional challenges, included in our Employee Assistance Programme.
• Sports and Social: Engage in our vibrant sports and social activities to foster a sense of community and well-being among our team members.
• Increased Annual Leave: 25 days’ annual leave plus statutory bank holidays, enjoy increased annual leave entitlements based on years of service.
• Recognition Awards: Receive recognition for your contributions through our awards program, celebrating achievements and excellence.

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.