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Job Information

AECOM Senior Process Engineer in Belfast, United Kingdom

Company Description

Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

Job Description

What your new role will entail:

Our thriving, multidisciplinary Water Engineering team in Belfast are looking for a Senior or Principal Process Engineer. The team are delivering an exciting portfolio of water programmes and projects through long term frameworks with key clients, including; Uisce Éireann, Northern Ireland Water (NIW) and other major UK water companies (Thames Water, Severn Trent Water, Wessex Water), principal contractors and various international projects.

This role provides a great opportunity to develop your career as a technical expert, delivering solutions on a diverse range of projects that meet the technical challenges of today and tomorrow.

Role Responsibilities :

  • Process Design: Undertake the design and review of hydraulic systems in wastewater and water infrastructure / treatment

  • Quality: Produce and review client deliverables, make key technical decisions and identify when specialist input from the greater team is required

  • Collaborate with clients and AECOM counterparts to ensure stakeholder buy-in to solutions, also contributing to AECOM’s wider technical capability and innovative approach

  • Mentor: Delegate tasks, direct and oversee the work of others and act as a technical mentor to more junior staff

Day to day tasks:

  • Develop and check process flow diagrams, mass balance calculations, PID’s, process control, operating philosophy, control philosophy, FDS documents and the principles therein.

  • Ensure all technical documents and data are prepared and structured in accordance with relevant design standards and legislation.

  • Assist with the checking the work of junior staff.

  • Undertake survey and assessments of existing process/equipment (asset surveys); site visits to complete if required.

  • Provide process commissioning support to site teams, if appropriate.

  • Represent AECOM in technical meetings with clients and work with engineers from other disciplines, ensuring an appropriate integrated solution.

Being part of the team:

You will work closely with civil, mechanical, electrical and geotechnical engineers to deliver a variety of interesting small and large wastewater projects from concept to delivery. Many of the project teams are UK wide, offering an excellent, unbeatable opportunity to lead a diverse, technically excellent team.

We offer a flexible hybrid working model. As a member of our team, you will enjoy a comprehensive benefits package with a range of flexible choices covering health, finance, lifestyle, well-being and more.


Here's what we will need from you:

  • Degree (or equivalent) in Chemical Engineering

  • Experience in wastewater treatment, managing the technical delivery of large-scale engineering projects

  • Working towards or completed Chartered Engineer status with IChemE or CIWEM.

  • Experience in process design and optimisation using appropriate Water Company standards and specifications.

  • Knowledge of Feasibility and Optioneering Studies for wastewater treatment processes.

  • Knowledge of the HAZOP process and procedures including Chair and Scribe duties, would be advantageous.

Additional Information

You can learn more about us here: 2023 AECOM Candidate Brochure (

Can’t find a role that suits you right now? Just register your interest here AECOM Jobs - Ref12547Y Jobs and we’ll keep you updated on our latest opportunities



AECOM is the world’s trusted infrastructure consulting firm, delivering professional services throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. On projects spanning transportation, buildings, water, new energy and the environment, our public- and private-sector clients trust us to solve their most complex challenges. Our teams are driven by a common purpose to deliver a better world through our unrivaled technical and digital expertise, a culture of equity, diversity and inclusion, and a commitment to environmental, social and governance priorities. AECOM is a Fortune 500 firm and its Professional Services business had revenue of $14.4 billion in fiscal year 2023. See how we are delivering sustainable legacies for generations to come at and @AECOM.

Freedom to Grow in a World of Opportunity

You will have the flexibility you need to do your best work with hybrid work options. Whether you’re working from an AECOM office, remote location or at a client site, you will be working in a dynamic environment where your integrity, entrepreneurial spirit and pioneering mindset are championed.

You will help us foster a culture of equity, diversity and inclusion – a safe and respectful workplace, where we invite everyone to bring their whole selves to work using their unique talents, backgrounds and expertise to create transformational outcomes for our clients.

AECOM provides a wide array of compensation and benefits programs to meet the diverse needs of our employees and their families. We also provide a robust global well-being program. We’re the world’s trusted global infrastructure firm, and we’re in this together – your growth and success are ours too.

Join us, and you’ll get all the benefits of being a part of a global, publicly traded firm – access to industry-leading technology and thinking and transformational work with big impact and work flexibility. As an Equal Opportunity Employer, we believe in each person’s potential, and we’ll help you reach yours.

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

ReqID: J10106648

Business Line: Water

Business Group: DCS

Strategic Business Unit: Europe & India

Career Area: Engineering

Work Location Model: Hybrid