Principal Mechanical Design Engineer (Water)

RPS Group; Warrington; On-site; GBP 45,000 - 70,000; Full time

Job summary

RPS Group is looking for Principal Mechanical Design Engineers (Water) to join their team in Warrington. The role involves developing solutions for major water projects, with responsibilities spanning from design to on-site support. Ideal candidates will possess strong mechanical engineering skills and qualifications, contributing to impactful water industry projects and fostering collaboration within a dynamic team environment.

Benefits

Personal development plan

Flexible and hybrid working

Inclusive environment

Qualifications

• Experience in producing technical outputs like specifications and designs.
• Knowledge of water and wastewater treatment processes.
• Membership with a relevant professional body.

Responsibilities

• Engage in all project phases from feasibility to construction support.
• Mentor junior team members and review technical designs.
• Conduct asset condition surveys and produce related reports.

Skills

Mechanical engineering principles

Pump system design

Safety regulations

Communication skills

Client presentations

Education

IMechE-accredited degree

Postgraduate qualifications

Tools

AutoCAD

Inventor

Job description

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Principal Mechanical Design Engineer (Water), Warrington

Client:

RPS Group

Location:

Warrington, United Kingdom

Job Category:

Other

-

EU work permit required:

Yes

Job Reference:

8d98a0616acf

Job Views:

22

Posted:

22.06.2025

Expiry Date:

06.08.2025

Job Description:

Principal Mechanical Design Engineer (Water)

We are recruiting multiple Principal Mechanical Design Engineers (Water) for major frameworks across the UK, including a £100 million framework with United Utilities to improve river health in Northwest England.

RPS has over 20 years of collaboration with United Utilities on innovative water projects. As we approach AMP8, this is an exciting time to work in the water industry, creating positive change through passionate collaboration.

Within this 10-year framework, RPS will optimize programs, develop solutions, and select the best options based on value, carbon footprint, and cost, aiming to deliver exceptional water services and foster a resilient, eco-friendly Northwest.

About The Team:

Our Water Consulting team comprises Engineers, Modellers, and Data Analysts providing Asset Management and Operational Strategy services, supporting business planning and delivery for water industry clients. Innovation and teamwork are key to meeting industry challenges.

We work with several major water companies across the UK, managing a broad portfolio of long-term frameworks. Our projects are leading into AMP8 and beyond, offering long-term career stability and impact.

About You:

You should have experience producing technical outputs like specifications, pump and aeration system designs, schedules, and reports. Familiarity with collaborative planning, design reviews, and safety assessments is essential.

You will contribute to design outputs such as General Arrangement Drawings, 3D models, and Piping & Instrumentation Diagrams, working collaboratively with multidisciplinary teams.

Strong communication skills for client presentations, technical workshops, and safety reviews (including HAZOPs and ALMs) are required. Knowledge of water and wastewater treatment processes and infrastructure assessment is important.

Joining us means contributing to impactful projects with leading organizations, leaving a lasting legacy in the UK water sector. You will be a key part of a dynamic team, working with major water companies to positively influence communities.

Your Responsibilities:

• Engage in all project phases from feasibility to construction support, including site surveys.
• Work on diverse projects within long-term frameworks with UK water companies.
• Liaise with project managers, clients, supply chain, and stakeholders to ensure project success.
• Support and mentor junior team members and review technical designs and reports.
• Understand technical drawings using AutoCAD or Inventor.
• Conduct asset condition surveys and produce related reports.
• Contribute to P&ID development and produce mechanical design deliverables.
• Support project compliance with CDM and quality assurance procedures.

Skills, Knowledge, and Experience:

• Strong understanding of mechanical engineering principles.
• Water industry experience is highly advantageous.
• Proficiency in pump system design, P&ID creation, specifications, and safety regulations.
• Knowledge of contract procurement, project management, and site visits.
• Experience with AutoCAD or similar software is preferred but not essential.

Qualifications:

• IMechE-accredited degree; postgraduate qualifications are a plus.
• Chartered status or working towards it.
• Membership or ongoing membership with a relevant professional body (IET, InstMC, CIWEM).

What’s in it for you?

We offer a personal development plan and clear career pathway, supporting your growth. We value diversity, promote a healthy work-life balance through flexible and hybrid working, and foster an inclusive environment where everyone can thrive.

Why RPS?

We are a connected community committed to collaboration and exceptional outcomes. As part of Tetra Tech since January 2023, we offer global opportunities, market-leading development, and impactful projects.

Join us and make a meaningful difference in the future of water!

#LI-MM1 #LI-REMOTE #LI-HYBRID

Our commitment to Diversity and Inclusion:

We embed diversity and inclusion in all our processes, recognizing that a diverse workforce enriches our organization and helps us serve communities better. Our core behavior, ‘Stronger Together,’ emphasizes respect, diversity acknowledgment, and mutual growth.

Recruitment Agencies:

We work with trusted partners from our Preferred Supplier List and do not accept unsolicited CVs from agencies not on this list. Please visit our careers page for more info.