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Senior/Principal Process Engineer

AdlerAllan1

Harrogate, England, United Kingdom Remote permanent

Posted: March 26, 2026

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Quick Summary

A key member of the Aqua Engineering team providing expertise in process knowledge and input into water and wastewater design and delivery schemes.

Job Description

Senior Mechanical Engineer

Full Time / Permanent

Competitive Salary + Benefits

We are seeking a Process Engineer to work predominantly in the Water industry but you may cover wider utilities and infrastructure.

This is a consultant role and it is likely the post holder will be seconded into one of Aqua’s clients on a part time or full time basis on an occasional or permanent basis.

Key responsibilities include;

• A key member of the Aqua Engineering team providing expert process knowledge and input into water and wastewater design and delivery schemes.
• Be a point of process expertise within Aqua consultants and be a thought leader.
• Capacity assessments into both water and wastewater treatment works to assess issues and come up with options for new process streams as required.
• Calculations and gap analysis to assess needs to ensure treatment works are compliant with the current and new consent requirements.
• Creation of mass balances, P+IDs, control philosophies and commissioning plans.
• Participation in HAZOPS, HAZIDS and HAZCOMMS as required.
• Assessment of potable treatment works, raw water deterioration parameters and any network risks.
• Creation of process options in sufficient detail to either go onto outline or detailed design.
• Detailed technical report writing based on the outcomes of calculations and collated site data.
• Stakeholder engagement across the water companies and other clients as required in order to pull data and scheme solutions together.
• Collaboration and interaction with the costing team in order to efficiently cost all options.
• Carryout client liaison and coordination, including reporting of progress.
• Project management of the tasks and deliverables required as part of the design packages.
• Conduct technical reviews of existing sites for troubleshooting purposes and be able to suggest process optimisation parameters.
• Assist project managers and site staff in evaluating data from site during commissioning and optimisation to facilitate successful project completion and meeting of compliance criteria.
• Give advice on best process engineering practice, including consent compliance, chemical handling and general design and operability health and safety.
• Development and promotion of environmental best practice.
• Attendance at stakeholder meetings & site visits.
• Attend design workshops.
• Desire and ability to work independent.
• Support and mentoring to graduate, consultant and senior members of the team.

 

• Accredited degree in Chemical/Environmental or Process Engineering.
• Good project management skills including organisational and diligence skills.
• Good analytical techniques and manipulation of data sets.
• Able to assess not only process but carbon footprint and environmental solutions, being innovative in your approach.
• Good communication, report writing and interpersonal skills.
• Experience in the creation of process mass balances and site optimisation plans.
• Experience of working within multi-disciplinary teams on a diverse project portfolio.
• Client and stakeholder management experience.
• Ability to lead projects.
• Practical site experience with regard to sampling and/or jar testing would be beneficial.
• Able to apply both industry best practice and the latest technology and innovation to new scheme solutions and ideas.
• Computer literate with Microsoft Office, Microsoft Project and other specialist computer packages (AutoCAD, Workspace, CRM’s, etc).
• Full UK driving licence as extensive travel throughout the UK will be required.
• Full UK permit for work or residency.
• Further education or second degree in a process engineering related discipline would be beneficial.
• Membership of a relevant chartered institute is essential.

What we would like to offer you:

• Competitive salary + discretionary bonus
• Company pension 
• 25 days annual leave + Bank holidays + option to purchase additional leave.
• Salary Sacrifice Pension scheme
• Company mobile phone and laptop provided.
• Training and career progression opportunities
• Professional Membership fees paid.
• Life Assurance Scheme 4 x annual salary
• Employee Assistance Programme (with access to GP appointments, Physio appointments and Mental Health Support)
• Medicash cash plan (Money back on everyday healthcare costs such as dental, glasses, contact lenses)
• Refer a friend scheme.
• Enhanced maternity,  paternity and adoption pay and leave

Why Aqua Consultants?

We are a fast-growing organisation with highly experienced staff at the heart of everything we do. We offer more than just a day job – Aqua offers very competitive salaries and a great working environment. You’ll be able to input into the development and growth of our business whilst we help you progress in your career.

Adler and Allan are committed to fostering diversity and inclusion in our workplace. We proudly embrace equal opportunities for all applicants, regardless of race, colour, religion, sex, sexual orientation, gender identity or national origin. If you require any support with your application, whatever the circumstance, please let us know.

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