Senior Process Engineer, Water

AECOM; Chesterfield; Hybrid; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Flexible hybrid working model

Career development opportunities

AECOM University

Job summary

AECOM is seeking a Senior Process Engineer to join its Water Team across the UK North and Midlands offices, with a flexible hybrid working model. You will lead process design for water and wastewater projects, perform hydraulic calculations, and mentor junior staff while coordinating with clients and multidisciplinary teams.

You will contribute to feasibility through construction designs, support bids, and help deliver client deliverables to high standards across Severn Trent Water, Yorkshire

Qualifications

• Proven experience in the design of water and wastewater engineering deliverables.
• BEng or MEng in a related engineering field with experience in water and wastewater treatment.
• Chartered (or near Chartered) Member of a relevant Professional Institution.
• Proven experience working at a senior engineer level at a consultancy within the water sector.
• Experience of managing projects, delegating tasks and technical mentoring.

Responsibilities

• Undertake the design and review of process elements in wastewater and water infrastructure/treatment projects.
• Engage in all design stages and ensure compliance with design standards.
• Support bid preparation and client interfaces.
• Deliver high‑quality technical solutions within budgets and timelines.

Skills

Water/wastewater design

Project management

Mentoring

Education

BEng/MEng in related engineering field

Chartered engineer (or near Chartered)

Job description

Job Description

Start here. Grow here.

Are you ready to shape the future of water infrastructure?

We are looking for a Senior Process Engineer to join our established and growing Water Team with opportunities to be based across our North and Midlands offices—Birmingham, Chesterfield, Leeds and Manchester—while also benefiting from our flexible hybrid working model.

Here’s what you’ll do:

Process Design

• Undertake the design and review of process elements in wastewater and water infrastructure/treatment projects, including:
  • Site visits to carry out site surveys and the support of liaisons with clients, contractors and suppliers
  • Hydraulic assessments and calculations
  • Existing process capacity assessments and basis of design development
  • Process equipment design
  • PFDs (Process Flow Diagrams)
  • P&IDs (Piping and Instrumentation Diagrams)
  • Mass/Energy balances, headloss calculations and pumping system analysis
  • Prepare documents such as Hazardous Area Classification and Layer of Protection Analysis (LoPA)
  • Participate in safety reviews, including HAZOP and HAZID assessments
  • Technical specifications and reports

Project Stages:

• Engage in all design stages, including Feasibility, Outline, Detail, and Construction Design, ensuring compliance with National and International Design Standards.
• Work closely with other discipline teams both locally and nationwide to deliver high‑quality technical solutions.
• Communicate effectively with clients and collaborators throughout the design and planning phases.
• Delegate tasks, direct and oversee the work of others and act as a technical mentor to more junior staff.

Bid Support:

• Assist in the preparation and management of bids and proposals, interfacing with clients to understand their needs and expectations.

Project Delivery:

• Ensure the delivery of quality designs within agreed budgets and timelines, supporting a range of AECOM’s clients, including Severn Trent Water, Yorkshire Water, Wessex Water, South West Water, Southern Water, Thames Water and Irish Water.
• Produce and review client deliverables, including calculations, drawings and technical reports to relevant standards and procedures.

AECOM’s digital strategy is driving the adoption of global digital solutions internally in our design process, to improve quality and consistency and streamline activities. You will help shape these digital offerings and use them on projects, including BIM, ProjectWise, intelligent P&ID’s and AECOM’s own tools developed in‑house, such as our pumping station generator.

Come & Grow with Us.

Become part of our dynamic Water business, which boasts around 600 experts across the UK & Ireland, including 300 specialists across our England & Wales Water team. Collaborate with top‑tier civil, mechanical, electrical and process engineers to deliver a variety of captivating projects, from small initiatives to large‑scale ventures, all the way from concept to completion. Here, you’ll thrive in an inclusive and forward‑thinking environment where your contributions are valued.

Enjoy the Perks.

At AECOM you'll enjoy a range of core and personalised benefits designed to support your future and well‑being, customised to fit your lifestyle. Take advantage of career development opportunities, our flexible hybrid working model to ensure a work‑life balance that suits your lifestyle, technical practice networks, AECOM University and volunteering days.

Qualifications

Here’s what we’re looking for:

• Proven experience in the design of water and wastewater engineering deliverables with multi‑disciplinary knowledge, ideally including treatment schemes.
• BEng or MEng in a related engineering field with experience in water and wastewater treatment.
• Chartered (or near Chartered) Member of a relevant Professional Institution.
• Proven experience working at a senior engineer level at a consultancy within the water sector.
• Experience of managing projects, delegating tasks and technical mentoring.

Additional Information

We celebrate diversity, including neurodiversity, and believe it enriches our team. We welcome applications from all backgrounds and abilities. If you are an applicant with a disability that requires reasonable accommodation to complete the application process, please contact us at [e-mail]. At AECOM, we value everyone's unique contributions and perspectives.

If you meet some of the requirements above or have transferable skills you believe would benefit us, we would be delighted to hear from you!

All your information will be kept confidential according to EEO guidelines.

We are a Disability Confident Employer and will offer an interview to applicants who have a disability or long‑term condition, who meet the minimum/essential criteria for the role. Please let us know using this email address [e-mail] if you would like to apply through the Disability Confident Interview Scheme.

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