Mechanical Engineer

Mechanical Engineer – Dumfries

Location: Dumfries

Salary: Circa £30,000 – £50,000 OTE (DOE)

Company: Hydro International, a CRH Company – a leading global provider of advanced products, services and expertise that help municipal, industrial and construction customers improve water management processes, increase operational performance and reduce environmental impact.

The Mechanical Engineer will work within Hydro International’s UK Wastewater Services (UKWWS) team, supporting water utility companies by improving sewage sites across the United Kingdom. This role is based at our Dumfries branch and involves significant site work, occasional weekend stays, and collaboration with other staff and trades.

• Install, commission, set up and test water filtration systems on sewage sites.
• Carry out site inspections and fault‑finding and compile survey reports for quotation purposes.
• Access and interpret technical instructions using mobile electronic equipment.
• Work at heights, in confined spaces and outside on sites connected with wastewater (sewage).
• Work away from home on a regular basis, requiring overnight stays.
• Work intermittently in workshops across the country.
• Collaborate as a team with other staff and trades within the business.

• Current valid driving licence.
• City & Guilds qualified.
• Successfully completed a recognised mechanical apprenticeship.

• Competitive salaries.
• Discretionary bonus.
• Overnight subsistence allowance and additional stay‑away payment.
• 2× annual salary life cover.
• Pension contribution.
• Sick pay policy.
• Minimum of 23 days holiday per annum + bank holidays.
• Flu and DSE eye tests.
• Mental health first aiders & support programmes.
• Training & development.
• Room for advancement.

• A culture that values growth, development and internal promotion.
• Highly competitive salary package.
• Comprehensive secondary benefits.
• Significant contribution to your pension plan.
• Excellent opportunities to develop and progress within a global organisation.

At CRH we believe our differences contribute to a healthy, productive, and enjoyable workspace. Please introduce yourself and submit your application through our job portal. We do not accept submissions via email for GDPR purposes.

Contact our recruitment team at

CRH is an equal opportunity employer. We are committed to creating an inclusive work environment for all employees and actively encourage applications from all sectors of the community.

Mid‑Senior level

Full‑time

Engineering and Information Technology

Industrial Machinery Manufacturing