Mechanical Design Engineer - Water & Infrastructure Projects

CHG Electrical; Rotherham; Hybrid; GBP 42,000 - 56,000; Full time

Benefits offered by this job

Flexitime

25 days holiday + bank holidays

CPD & Training

Job summary

CHG Electrical is seeking a proactive Mechanical Design Engineer to design and deliver MEICA-focused solutions for water and wastewater projects in the UK. You will develop practical mechanical designs for pumps, pipework, valves and tanks, integrating with civil, electrical and ICA systems to support successful MEICA delivery.

Join a growing, multidisciplinary team in Sheffield with hybrid working (1-2 days home-based).

Qualifications

• Mechanical design experience in water/wastewater or infrastructure projects.
• Experience producing layouts, pipework, equipment specifications and calculations.

Responsibilities

• Prepare mechanical designs, drawings and calculations for pumps, pipework, valves and tanks.
• Develop P&IDs, GA layouts and equipment schedules for project mobilisation.
• Coordinate with civil, electrical and MEICA teams to ensure buildability and integration.
• Provide on-site technical support during construction and handover.

Skills

Pumps

Pipework

Valves

Tanks

Process Plant

P&IDs

Mechanical Design

Education

Degree in Mechanical Engineering

Tools

AutoCAD

Inventor

Pipework design tools

Job description

Mechanical Engineering | MEICA | Water & Wastewater | Process Plant | Pipework | AMP Projects

Want to Design Engineering Solutions That Actually Make It to Site?

Join a growing multidisciplinary engineering business where you'll see your designs move from concept and calculations through to installation on critical water and wastewater infrastructure.

We're looking for a proactive and technically strong Mechanical Design Engineer to join CHG Electrical, supporting the design and delivery of mechanical engineering solutions across clean and dirty water treatment sites.

From pumps, pipework and valves to tanks and wider process plant, you'll develop practical mechanical solutions that integrate with civil, electrical and ICA systems and support successful MEICA delivery.

If you've developed your mechanical design experience within water, utilities or infrastructure and want greater project exposure, collaboration and long-term progression, we'd love to talk.

The Role at a Glance

Mechanical Design Engineer

Sheffield - Hybrid Working Available (1-2 days home based)

Full Time | Permanent

Flexitime | 25 Days Holiday + Bank Holidays | CPD & Training

Projects:

Water | Wastewater | Utilities | AMP Infrastructure | MEICA

Design:

Pumps | Pipework | Valves | Tanks | Process Plant | P&IDs | GA Layouts

Software:

AutoCAD | Inventor | Pipework / Process Design Tools

Knowledge:

WIMES | CDM | Sewerage Sector Guidance | Mechanical / Process Standards

Essential:

Full UK Driving Licence

Who We Are

Founded in Sheffield in 2004, CHG Electrical has more than two decades of engineering heritage.

Built on strong electrical engineering foundations, the business has evolved into a multidisciplinary engineering partner delivering complex projects across water utilities, rail, steel and manufacturing.

Today, our capabilities span MEICA, EICAT, civil engineering, control-panel design and manufacture, automation, software and digital transformation. We support projects from initial design through installation and commissioning to long-term maintenance, combining practical, hands‑on engineering experience with modern technology and intelligent thinking.

Throughout that evolution, the principles behind CHG have remained consistent: technical excellence, exceptional quality, safe delivery and trusted long-term relationships.

It's this proven heritage, combined with our ambition to keep innovating, that enables us to deliver reliable, future‑ready solutions for some of the UK's most important infrastructure.

The Opportunity

This is an opportunity to become an important part of CHG's growing design capability, developing the mechanical engineering solutions that sit at the heart of water and wastewater infrastructure projects.

You'll produce detailed layouts, pipework designs, equipment specifications and calculations to support the installation of process plant and MEICA equipment across clean and dirty water treatment sites.

Working alongside civil, electrical and wider engineering specialists, you'll ensure mechanical designs don't simply work technically, but are practical to build, integrate effectively with other disciplines and meet the requirements of the project and water company.

You'll also remain involved as projects move onto site, providing technical support during construction, resolving design queries and helping take your designs through to successful handover.

Where You'll Make an Impact

Design Practical Mechanical Solutions

• Prepare mechanical engineering designs, drawings and calculations covering pumps, pipework, valves, tanks and process plant.
• Support the development of P&IDs, GA layouts and equipment schedules for project mobilisation.
• Interpret process flow information and equipment specifications to develop effective engineering solutions.

Bring Engineering Disciplines Together

• Coordinate with civil, electrical and wider project teams to ensure mechanical designs integrate effectively across the complete MEICA solution.
• Work with internal teams and external consultants to ensure buildability and technical alignment.
• Review and approve subcontractor and supplier mechanical design proposals.

Design for Safe, Compliant Delivery

• Ensure designs meet relevant standards, specifications and water company requirements.
• Participate in HAZOPs, CDM risk assessments and constructability reviews.
• Contribute to design risk registers and ensure temporary and permanent works requirements are properly considered.

Support Projects Through Construction

• Provide technical support to site teams throughout the construction phase.
• Respond to technical queries and RFIs, helping resolve design and installation challenges efficiently.
• Contribute to O&M manuals, as-built records and wider project documentation.

Think Beyond the Immediate Build

• Develop sustainable and cost-effective mechanical solutions.
• Consider whole-life asset performance when selecting equipment and developing designs.
• Help identify opportunities to improve buildability, efficiency and long‑term asset performance.

About You

You'll be a Mechanical Design Engineer with a strong understanding of how mechanical and process systems come together within complex infrastructure environments.

Ideally, you'll have developed your experience within water, wastewater, utilities or infrastructure, giving you practical knowledge of