Senior Mechanical Engineer

JN Bentley; West of England; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Pension contributions

Annual bonus

Professional subscriptions

Flexible benefits

Life Insurance

Private Medical Insurance

Job summary

Mott MacDonald Bentley is seeking a Senior Mechanical Engineer to drive the design and delivery of water and wastewater projects in the UK. You will lead from concept to commissioning, coordinating with electrical, civil and process teams to ensure quality, safety and programme adherence.

The role emphasizes hands‑on technical leadership and stakeholder engagement. You will mentor junior engineers, contribute to chartership pathways, and collaborate with clients to achieve project aims while

Qualifications

• Degree in Mechanical Engineering.
• Chartered or incorporated with ICE/IMechE or equivalent.
• Strong communication skills.
• Methodical problem solving approach.
• Valid driving licence and willingness to travel to sites.
• Water/wastewater experience required.

Responsibilities

• Lead the mechanical design of water and wastewater projects through outline to handover.
• Coordinate with Electrical, Civil, Geotech and Process designers to meet programme and budget.
• Collaborate with commercial, operational and construction teams for safe, practical solutions.
• Engage with clients, managing relationships and supporting project aims.
• Mentor engineers and develop resources for projects.

Skills

Communication

Problem solving

Travel flexibility

Water/wastewater experience

Education

Bachelor's degree in Mechanical Engineering

Job description

Internal applicants are welcome

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, Mott MacDonald Bentley cements its position as a leader within the industry. The sustained, robust business performance creates an ideal environment for career growth.

MMB has been named a capital delivery partner on two multi‑million‑pound ‘lots’ that will see the company deliver projects across the region through to 2030 – with the potential for a five‑year extension into AMP9 thereafter. Wessex Water serves 2.9 million customers with water and sewerage services across the southwest of England. Set for record investment in AMP8 – more than double that of AMP7 – MMB will bring its strong track record of innovation and direct‑delivery to drive a programme of work. We will be delivering schemes located around Bournemouth, Poole and South Dorset area.

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 the feasibility, design, construction, and commissioning services needed to keep water flowing and wastewater treated. You’ll work on projects that make a real difference to our environment and our communities by enhancing the efficiency and effectiveness of water and wastewater treatment systems. You will play a pivotal role in shaping the mechanical functions throughout the lifecycle of various projects. From concept design to commissioning, you will ensure that all mechanical aspects are meticulously considered and integrated.

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 of Electrical, Civil, Geotech and Process designers and ensure designs are completed on programme, within budget, and to the quality defined by framework specifications
• Working 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
• Supporting 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 related field
• Chartered or incorporated member of professional institution e.g ICE, IMechE, etc, 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
• Water/wastewater experience required

What’s in it for you

Financial wellbeing

• MMB match 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 is 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 are not currently offering sponsorship to candidates under the Skilled Worker visa route in the UK. This decision is as a consequence of the changes made to the Skilled Worker route by the UK Government in April 2024. We continue to welcome applications from candidates who are eligible for alternative immigration routes in the UK, that do not require sponsorship as a Skilled Worker now or in future.