Senior Mechanical Design Engineer in St. Asaph

Carrington West; St Asaph; Hybrid; GBP 74,000 - 83,000; Full time

Benefits offered by this job

Hybrid work model

Outside IR35

Job summary

Carrington West is seeking a Senior Mechanical Design Engineer with strong experience in the water sector to support AMP8 projects. The role is embedded in a multidisciplinary team delivering design and technical assurance for water and wastewater schemes across UK regions.

The position is hybrid: 1-2 days a week in St Asaph, on a flexible contract basis (initial 6 months with extensions up to 2 years). Daily rate £400-£450 outside IR35, depending on experience.

Qualifications

• Degree-qualified in Mechanical Engineering or similar.
• Chartered status or working towards chartership preferred.
• 5-10 years' post-graduate experience.
• Experience delivering mechanical design work in the Water/Wastewater industry.

Responsibilities

• Deliver mechanical design solutions for complex water and wastewater treatment infrastructure.
• Provide engineering input across all design stages - including concept, feasibility, optioneering, and preliminary design.
• Carry out condition assessments, asset surveys, and root cause analysis for plant and equipment failures.
• Contribute to whole-life cost analysis, project briefs, and technical reports.
• Work collaboratively with multidisciplinary teams to resolve mechanical challenges on operational assets.
• Ensure all solutions are technically robust, compliant with regulations, and aligned with best practices in the water industry.
• Support project delivery and commissioning phases through technical review and assurance.
• Provide engineering advice and mentorship as required to junior members of the team.

Skills

Strong communication skills

Proactive problem solving

Mentorship

Education

Bachelor's degree in Mechanical Engineering

Job description

Job Title

Mechanical Design Engineer - Water Projects (AMP8 Framework)

Location

Hybrid 1-2 days a week in St.Asaph

Rate

£400 - £450 per day - Outside IR35 (Depending On Experience)

Duration

Initial 6-month contract with extensions available up to 2 years.

Start Date

ASAP

Overview

We are seeking a Senior Mechanical Design Engineer with strong experience in the water sector to support high-profile projects as part of the AMP8 investment programme. This role is embedded within a multidisciplinary engineering team and focuses on delivering design and technical assurance for water and wastewater treatment schemes across the multiple Water regions. This is a fantastic opportunity to contribute to long-term, sustainable water infrastructure improvements through technically rewarding project work in a flexible and collaborative setting.

Key Responsibilities

• Deliver mechanical design solutions for complex water and wastewater treatment infrastructure.
• Provide engineering input across all design stages - including concept, feasibility, optioneering, and preliminary design.
• Carry out condition assessments, asset surveys, and root cause analysis for plant and equipment failures.
• Contribute to whole-life cost analysis, project briefs, and technical reports.
• Work collaboratively with multidisciplinary teams to resolve mechanical challenges on operational assets.
• Ensure all solutions are technically robust, compliant with regulations, and aligned with best practices in the water industry.
• Support project delivery and commissioning phases through technical review and assurance.
• Provide engineering advice and mentorship as required to junior members of the team.

Requirements

• Degree-qualified in Mechanical Engineering or similar.
• Chartered status or working towards chartership with a relevant professional institution (e.g., IMechE) preferred.
• 5-10 years' post-graduate experience.
• Experience delivering mechanical design work in the Water/Wastewater industry.
• Familiarity with AMP7 or AMP8 frameworks
• Strong communication skills and a proactive, solution-oriented approach to engineering delivery.

Desirable Background

Candidates who have previously worked on frameworks for UK water utilities such as:

• Thames Water
• Wessex Water
• Welsh Water
• Northern Ireland Water
• Anglian Water
• Severn Trent
• United Utilities
• Southern Water
• South West Water
• Northumbrian Water

If you're an experienced mechanical engineer looking to apply your expertise to vital UK water infrastructure projects, we'd love to hear from you.