Mechanical Engineer

Mott MacDonald; North Carolina; On-site; USD 56,000 - 87,000; Full time

Benefits offered by this job

Pension contributions

Bonus scheme

Professional subscriptions

Flexible benefits

Job summary

Mott MacDonald Bentley is seeking a Mechanical Engineer to contribute to water and wastewater projects, shaping mechanical designs from concept to commissioning. The role emphasizes collaboration with electrical, civil, and process teams and close client interaction to meet programme and budget goals.

You will work primarily in the UK water market, ensuring designs align with safety, quality, and environmental standards, while supporting career growth through structured development and

Qualifications

• Degree in Mechanical Engineering or related field.
• Working towards IEng/CEng with a relevant Engineering Institution.
• Excellent communication and problem-solving abilities.
• Willingness to travel to sites within the operational region.

Responsibilities

• Develop the mechanical design of water and wastewater infrastructure across outline through commissioning and handover, including P&IDs, valve schedules, pump calculations, and associated layouts.
• Coordinate with Electrical, Civil, Geotech and Process designers to deliver on programme, budget, and quality requirements.
• Collaborate with commercial, operational and construction teams to develop efficient, practical and safe solutions across design stages and beyond.
• Engage with clients to build strong relationships and support their aims with a one-team approach.

Skills

Communication skills

Problem solving

Driving license

Teamwork

Education

Degree in Mechanical Engineering

IEng/CEng eligibility

Job description

Mott MacDonald is a global engineering, management and development consultancy.

Our purpose is to improve society by considering social outcomes in everything we do, relentlessly focusing on excellence and digital innovation, transforming our clients’ businesses, our communities and employee opportunities.

A fundamental part of this is respecting each person’s differences and striving to meet their needs.

We believe that because we care about what we do, we do things better.

We know that our people are our most valuable asset, so we are dedicated to investing in them, through our comprehensive training and development schemes, exposure to the wider design and build business and endless opportunities.

We are committed to creating a workplace where our people are safe, have a voice, can reach their full potential, and everyone shares in the rewards.

You’ll have the opportunity to contribute to projects that benefit our communities – from helping to secure water supplies for future generations to protecting homes and businesses from flood risk – our projects make a real difference.

Diversity, Equity & Inclusion

A Mott MacDonald Bentley we welcome 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.

Even if you don’t meet every requirement for this role but are excited about the opportunity, we encourage you to apply. Find out more about our approach to Diversity, Equity & Inclusion here: https://www.mottmacbentley.co.uk/people.

We are committed to ensuring that our recruitment practices are barrier-free and as inclusive as possible. This includes making adjustments during the job application process and throughout your future career with us. Please call 01756 691572 or email [e-mail] to discuss any such adjustments that we can make. You can read more about our Equal Opportunities Policy here: Equality, diversity and inclusion

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

Company: Mott MacDonald
Salary: Not specified
Hours: Full-time
Location: Durham, DH4 5QY
Job type: Permanent
Posting date: 26 Oct 2026
Closing date: 25 Nov 2026

Summary

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.

We joined a new partnership in Northumbrian Water’s new Living Water Enterprise, an innovative vehicle developed to deliver large scale construction programmes in AMP8 and beyond, supporting a £3.6bn workload.

Northumbrian Water supplies water and sewerage services to just under 4.4 million people and has worked closely with MMB and JN Bentley since 2001. In this time, the companies have delivered hundreds of engineering and construction projects together. This new contract will extend the relationship to at least 2030 and see MMB – which harnesses the contracting strength of JN Bentley and the design specialisms of Mott MacDonald - undertake treatment projects across the North East.

As a 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 Mechanical Engineer includes:

• Develop 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.

What you’ll need:

• Degree in Mechanical Engineering, or related field
• Working towards IEng / CEng with a relevant Engineering Institution
• 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 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 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 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.

Proud member of the Disability Confident employer scheme

About Disability Confident Disability Confident is a government scheme. It encourages employers to recruit and retain disabled people and those with long term health conditions.