Principal Process Engineer

Principal Process Engineer

For the Principal Process Engineer role at Mott MacDonald, internal applicants are welcome. Mott MacDonald Bentley have 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—potential for a five‑year extension into AMP9 thereafter. Wessex Water serves 2.9 million customers with water and sewerage services across the south west of England. With 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 in the Bournemouth, Poole and South Dorset area. As Principal Process 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.

Responsibilities

• Lead and oversee the design, planning and execution of process engineering on projects; lead development of process design deliverables such as process models, mass balances and control philosophies.
• Analyse site performance and identify risks that may impact project delivery; develop mitigation to avoid negative impacts or exploit opportunities.
• Challenge the process selection and delivery effectiveness of initial solutions to ensure we always offer our clients the best value solutions.
• Identify opportunities for innovation to meet whole‑life cost and net‑zero drivers.
• Prepare and review designs for schemes and ensure all designs are fit for purpose and meet current legislation and standards.
• Produce and review technical specifications and schedules for procurement activities, review supplier tender bids and technical submissions.
• Identify opportunities to improve delivery processes including development and implementation of standard designs, sustainable solutions and digital tools.
• Act as technical checker on project documents and undertake technical reviews for projects across teams.
• Work closely and collaboratively with the commercial, operational and construction teams to develop efficient, practical and safe solutions throughout design stages, construction and beyond.
• Supervise and mentor Graduates and Engineers, assisting them to develop their knowledge and skills.
• Positively engage with the client, manage relationships and adopt a one‑team approach to supporting them in achieving their aims.
• Undertake site reviews to ensure buildability of solutions and integration within existing systems.

Qualifications

• Chemical Engineering or a relevant Process Engineering degree, or related field.
• Chartered member of a professional institution (e.g. ICE, IMechE) or equivalent experience.
• Experience and understanding of water and/or wastewater unit processes and treatment plant, with experience of delivering process design for wastewater projects.
• Experience of HAZOP studies as chair or team member would be advantageous.
• Experience with water, or wastewater, non‑infrastructure or infrastructure projects.
• Experience of successfully delivering high‑quality outputs in accordance with design, quality and safety standards.

Benefits Financial Well‑Being

• 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 colleagues, including our annual bonus schemes.
• Payment of annual professional institution subscription costs.

Health and Well‑Being

• 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.
• Support for flexible working and work‑life balance.
• Participation in a wide range of employee networks including those supporting LGBTQ+, gender, race, ethnicity, disability and parents/carers communities.

Enhanced Family & 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 additional paid days leave for those with significant caring responsibilities.

Learning and Development

• Structured development schemes that support your journey toward professional chartership, including mentorship, hands‑on experience and tailored training opportunities.

Sponsorship Information

Mott MacDonald Bentley are not currently offering sponsorship to candidates under the Skilled Worker visa route in the UK. We continue to welcome applications from candidates who are eligible for alternative immigration routes that do not require sponsorship.

Other Information

This is a Mott MacDonald Bentley role, employed by Mott MacDonald. Mott MacDonald Bentley is a joint venture business established in 1999 between civil engineering contractor JN Bentley and global management consultancy Mott MacDonald. This role is employed by Mott MacDonald but will involve working across the joint venture business, both with Mott MacDonald and JN Bentley colleagues.

Additional information:

• Location: Bristol, GB
• Contract Type: Permanent
• Work Pattern: Full Time
• Recruiter Contact: laure.hutchinson@jnbentley.co.uk

Equal Opportunities

We are committed to ensuring that our recruitment practices are barrier‑free and as inclusive as possible. We welcome applications from all sectors of the community and provide adjustments during the application process. For more information, read our Equal Opportunities Policy: Equality, diversity and inclusion – Mott MacDonald.

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