Senior Mechanical Engineer

Overview

Joining Arup

Arup's purpose, shared values and collaborative approach have set us apart for over 75 years, guiding how we shape a better world.

Around the globe, Arup’s mechanical engineers bring specialist expertise to solutions for buildings, transport infrastructure and energy, water and waste utilities. Our comprehensive services to the energy, water and resources sectors include development of solutions for utilities and infrastructure assets, industrial processes and manufacturing systems, renewable energy and storage and sustainable mechanical system design. We are trusted to bring inventive solutions to complex technical challenges: from exemplar projects such as Green Hydrogen Production facilities to Toddbrook Reservoir repair.

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We are seeking Senior Mechanical Engineers to join our Water team and contribute to the delivery of robust, efficient engineering solutions across the water industry. In this role, you will take ownership of the design and execution of water and wastewater treatment projects, including pumping systems and transmission infrastructure.

Ideally you will be based in Cardiff or Birmingham
, however these vacancies are open to a number of our UK offices including Leeds, Manchester, Sheffield and Liverpool
.

You’ll work on technically challenging and high-value projects within long-term frameworks for major UK water utilities such as Welsh Water, United Utilities, Severn Trent Water and Wessex frameworks. You will apply your technical expertise, lead key project tasks, and provide guidance to junior team members. Building and maintaining strong relationships with clients and partners will be an essential part of the role.

As a Senior Mechanical Engineer, you will lead the mechanical design and delivery of water sector projects from feasibility through to construction. You will provide technical direction to multidisciplinary teams, with a focus on treatment systems, pumping solutions, and pipework design. The role involves overseeing and supporting the work of junior engineers and technicians, ensuring high standards across all stages of project delivery.

You will engage directly with clients to meet technical requirements, manage timelines, and stay within budget. In addition, you will contribute to work-winning activities, including the preparation of project bids, proposals, and participation in client meetings. You will make effective use of digital tools such as BIM and Plant 3D to enhance project outcomes and will be expected to promote a culture of technical rigour, operational efficiency, and innovation within the team.

The available positions are for senior engineers with experience in water, including treatment facilities, pumping systems and pipework. We want people who are self motivated and able to adapt to the demands of projects and clients, someone who will enjoy solving problems and working with our multidisciplinary teams to deliver high quality solutions.

We are seeking the below skills and knowledge:

• Proven experience delivering mechanical designs in the water utilities sector, including treatment facilities and pumping systems
• Chartered Engineer (CEng) status with IMechE or relevant body, or progressing toward chartership
• Sound knowledge of current mechanical design standards and practices in the UK water industry
• Proficiency in understanding digital design software (e.g., BIM, Plant 3D)
• Clear communication skills and the ability to work effectively within multidisciplinary teams
• A results-oriented mindset, with the ability to manage priorities and deliver high-quality work on time

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