Process Design Lead – Water & Wastewater
Location: Dublin (regional role across Ireland)
Employment type: Permanent, full-time
Are you a process / hydraulic engineer who wants more ownership, more variety, and a real say in how projects are delivered?
This is a fantastic opportunity to step into a Design Lead role in Ireland, taking the technical lead on water and wastewater infrastructure projects from concept through to construction, commissioning and operation.
You’ll join a collaborative multi‑disciplinary team and play a key role in shaping sustainable, efficient treatment solutions that genuinely impact communities across Ireland.
The opportunity
As Process Design Lead, you’ll be the go‑to person for Process & Hydraulic Engineering within a regional portfolio of projects. You will:
Own the process, hydraulic and mechanical design across multiple water and wastewater schemes
Lead the development of robust engineering solutions from feasibility and optioneering through detailed design and into commissioning
Work closely with MEICA, civil and structural teams in a genuine “one-team” environment
Develop and review process documents including PFDs, intelligent P&IDs, control philosophies and constructability assessments
Lead or significantly contribute to:
Process & mechanical design reports
Hydraulic & process calculations, energy balances
Equipment selection, specifications and motor/instrument lists
Whole‑life cost and lifecycle performance assessments
Site layouts focused on operability, maintainability and safe construction
Support design assurance: HAZOPs, ALMs, design reviews, constructability and CDM compliance
Provide hands‑on technical support to site and commissioning teams, ensuring design intent is delivered on the ground
Act as a key technical contact for clients and stakeholders, helping to resolve queries and keep projects on track
This role offers a broad mix of office, digital collaboration and site interface, giving you visibility across the full project lifecycle – not just the design phase.
What you’ll bring
We’re looking for someone who combines strong technical capability with practical, delivery‑focused thinking:
Bachelors degree with honours in Chemical, Water/Wastewater, Environmental, Process Engineering or closely related discipline
5+ years’ relevant experience in process/design engineering, ideally in water, wastewater or process industry projects
Strong knowledge of process and hydraulic design for treatment systems – including calculations, equipment selection and process modelling
Confidence in preparing and reviewing:
PFDs and P&IDs
Control philosophies / automation inputs
Constructability and operability assessments
Experience coordinating designs across MEICA and civil/structural disciplines
Familiarity with digital engineering tools / CDEs such as BIM 360, ACC, ProjectWise or similar
Proven ability to engage with clients and third‑party stakeholders, leading technical discussions and resolving queries
Chartered Engineer status (or working towards it)
Experience mentoring junior engineers and designers
Background in design & build or contractor‑side delivery, with a focus on buildable, cost‑effective solutions
Experience on major Irish or UK water frameworks is a distinct advantage
Why this role?
This is a great fit if you’re ready to move beyond being “just another designer” and want a role where your input truly shapes outcomes:
Impactful work – help deliver water and wastewater infrastructure that underpins communities and environmental protection across Ireland
True design leadership – own the process & hydraulic discipline across multiple projects, not just a small work package
Variety & challenge – from early‑stage concept and optioneering to commissioning and handover
Career progression – strong platform to progress into Principal Engineer, Discipline Lead or Design Manager roles
Collaborative culture – work with planners, digital teams, project managers and site teams in a joined‑up, “one‑team” environment
Professional growth – support for chartership, CPD and exposure to multi‑disciplinary engineering challenges
How to apply
Interested in finding out more? Apply now with your up to date CV in confidence
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