Senior Mechanical Engineer in Newport, Wales

Mott MacDonald Bentley is a fully integrated design and build business combining the design expertise of Mott MacDonald with the contracting experience of JN Bentley to deliver award‑winning projects. With an annual turnover surpassing £500 million, MMB cements its position as a leader within the industry. The sustained, robust business performance creates an ideal environment for career growth. We have secured a new framework with Dŵr Cymru Welsh Water that will last up to eight years, enabling MMB to tackle projects across the DCC region covering clean and wastewater treatment sites, below‑ground assets, reservoirs and nature‑based solutions.

As a Senior Mechanical Engineer you will contribute to projects that significantly impact our environment and communities. Working primarily in the UK water market, MMB provides feasibility, design, construction, and commissioning services needed to keep water flowing and wastewater treated. You’ll work on projects that make a real difference by enhancing the efficiency and effectiveness of water and wastewater treatment systems.

The Role of a Senior Mechanical Engineer Includes:

• Lead the mechanical design of water and wastewater infrastructure and non‑infrastructure projects through the outline and detailed design, construction, commissioning, and handover, including, but not limited to, P&IDs, valve schedules, pump calculations, defining safe access and lifting arrangements, above‑ground pipework layouts, etc.
• Coordinate with the project team comprising Electrical, Civil, Geotech, and Process designers and ensure designs are completed on programme, within budget, and to the quality defined by framework specifications.
• Work closely and collaboratively with the commercial, operational and construction teams to develop efficient, practical and safe solutions throughout design stages, construction and beyond.
• Positively engage with the client, managing relationships and adopting a one‑team approach to supporting them in achieving their aims.
• Support the development of the mechanical engineering team, coaching and mentoring engineers to develop their skill set and identifying the correct resource for the projects.

What You’ll Need:

• Degree in Mechanical Engineering, or a related field.
• Chartered or incorporated member of a professional institution e.g., ICE, IMechE, or equivalent experience.
• Ability to communicate effectively with team members and stakeholders.
• Methodical approach to problem solving.
• A valid driving licence and willingness to travel to sites across your operational region.

What’s in it for you:

• Financial wellbeing: MMB matches employee pension contributions between 4.5% and 7%. As an independently owned business we share the financial success of the business with all our colleagues, including our annual bonus schemes. Payment of annual professional institution subscription costs.
• Health and wellbeing: A minimum of 33 days holiday each year, inclusive of public holidays, with the ability to buy, sell or carry over annual leave through our flexible benefits programme. Access to Life Assurance, Private Medical Insurance, Critical Illness Insurance and Health Screening options. We are happy to talk openly about flexible working and how we can support your responsibilities beyond the workplace. Join a wide range of groups including our Advanced Employee Networks which support our LGBTQ+, gender, race and ethnicity, disability, and parents/carers communities.
• Enhanced family and carers leave: Enhanced family leave policies, including 26 weeks paid maternity and adoption leave, and two weeks paid paternity/partner leave plus the option for shared parental leave. Up to 2 paid additional days leave are provided for those with significant caring responsibilities.
• Learning and development: MMB are committed to empowering our people to grow professionally and thrive in their careers. We offer structured development schemes that support your journey toward professional chartership. From day one, employees are fast‑tracked towards chartership reviews and benefit from mentorship, hands‑on experience, and tailored training opportunities.

Mott MacDonald Bentley welcomes applications from all sectors of the community. We are dedicated to building a diverse workplace where everyone feels included, has the opportunity to thrive, and is treated with respect. If you are excited about the opportunity but do not meet every requirement, we encourage you to apply.

We are committed to providing a flexible and agile working environment that supports both our employees and the needs of the business.

Location(s): Newport, GB Pentre Maelor, GB Contract Type: Permanent Work Pattern: Full Time Market: Water Discipline: Water Job Ref: 10001