14 Sep, 2021

Senior Process Engineer

  • Costain
  • United Kingdom
Process Engineer Water & Waste

Job Description

Our Process Engineering team is recruiting for a Senior Process Engineer with good knowledge and experience in the design of wastewater treatment facilities to undertake design work for our framework clients.

The role is for our engineering design hub in South Manchester.

While this is an office based role, our designers are currently working from home due to Costain’s Covid-19 restrictions. When these restrictions eventually ease, we expect the role would return to being primarily office based with some flexibility in working arrangements. This role will require some travel to Costain & Client offices & sites.

Role Dimensions
A Senior Process Engineer is an experienced process engineer, who has good knowledge and adequate practical experience to consistently perform the required task(s) in a range of complex and non-routine contexts; supervision is only required in more complex circumstances.  The role reports to the Chief Process Engineer (Water).


Role Overview

To undertake outline or detailed process engineering design

To prepare or check project calculations and deliverables

To work in a collaborative multi-disciplinary project delivery team and to ensure integration of Process Engineering design requirements into the overall engineering design

To work to the project programme for activities/deliverables and understanding interdependencies

To support site based commissioning support where assigned

To attend site visits for data acquisition and meeting site operators

To provide technical input to the procurement process

To participate in regular team meetings and reviews and help to develop our capability

To contribute to technical/safety reviews


Legislation, Codes & Standards

Can identify and understand legislation, codes and standards applicable to their work.

Process Design

Can generate and apply the Process Design Basis and Scope of Work to their work.

Can generate, understand and apply the Plant Operating and Design Envelope to their work.

Can identify and select appropriate process technologies.

Can generate and apply design philosophy and requirements for Process Control.

Can identify Materials of Construction in accordance with company standards.

Can size and specify Process and Utility Equipment.

Can generate and apply Process Design Philosophies in their work.

Can generate and develop PFD's for Process and Utility systems.

Can generate and develop P&ID's for Process and Utility systems.

Process Safety

Understands the principals of Hazard Studies (e.g. HAZID, HAZOP) and can apply the methodology.

Be aware of the principles of SIL Assessment and application of the methodology.

Detailed Engineering

Process Input to MEICA Design

Health, Safety & Environment

Understands and adheres to their local workplace rules and instructions designed to ensure a safe place of work and can challenge and report non-compliances.

Understands their duties to comply with Health and Safety Policy and Environmental Policy on within the company

Understands the principles of Process Safety Management and applies it to assure the safety of their output in environments and situations where there is potential for high adverse consequences.


About you

A degree qualification in a process engineering related discipline is essential

Chartered Engineer and member of a relevant engineering institution is preferred

The candidate should have a minimum of 6 years’ experience in process engineering with good knowledge and experience in the design, operation and optimization of wastewater treatment, water treatment and biosolids recycling plants

A background in an engineering consultancy or contracting design environment

Some operational experience in the water sector would be beneficial

A sound appreciation of regulation and compliance principles in wastewater treatment would be beneficial

Role Competencies

A good knowledge and ability in using process tools and software (including Excel)

An ability to communicate technical subjects clearly and concisely verbally and in writing

Must be delivery driven with a mind-set to work to targets and meet team objectives

Innovative and demonstrable ability to add value

An understanding of technical risk and opportunity

Flexible and agile to respond to changing customer and business needs



About Costain

Costain helps to improve people’s lives with integrated, leading edge, smart infrastructure solutions across the UK’s energy, water, transportation and defence markets. We help our clients improve their business performance by increasing capacity, improving customer service, safeguarding security, enhancing resilience, decarbonising and delivering increased efficiency. Our vision is to be the UK’s leading smart infrastructure solutions company. We will achieve this by focusing on blue chip clients whose major spending plans are underpinned by strategic national needs, regulatory commitments, legislation or essential performance requirements. We offer our clients leading edge solutions that are digitally optimised through the following five services which cover the whole lifecycle of their assets: future-shaping strategic consultancy; consultancy and advisory; digital technology solutions; asset optimisation and complex programme delivery. Our culture and values underpin everything we do.

 Your application

At Costain we aim to be an accessible, diverse and inclusive organisation to continue to meet our customers’ needs. We will be industry leading in our approach and people from all backgrounds will be proud to work for Costain. Our goal is to have a workforce that is representative of society.

Should you require any adjustments to support you in your application, please do not hesitate to contact us: careers@costain.com

We will consider all applicants regardless of age, race, faith and socioeconomic background, including those from marginalised groups, such as (but not exclusive to):

People who identify as LGBT+, including non-binary people
People with physical or neurological disabilities
People who have mental ill health

We welcome you to ask about the flexibility you need for dynamic working, such as, working part-time, remote working, or compressed hours. In return, we will explore what is possible.

To find out more about our Inclusion strategy, please visit our ED&I page:


Right to Work & Security Checks

Understandably given the nature of our business, everyone who is employed at Costain must undergo thorough referencing checks. We will need different information depending on the job we have offered you. For all roles, we'll carry out a criminal record check and we’ll ask to see evidence that you have the legal right to work in the UK.
For some of our roles, you may be required to obtain and maintain security clearance of at least Security Check level (or SC clearance). To satisfy the requirements, you will need to have been a legal UK resident for a minimum of 5 years and have successfully complete all stages of the vetting process.

Closing date

Please note that Costain reserves the right to bring forward the closing date of any of its job vacancies if we receive a suitable number of quality applications from which to make a shortlist. Therefore, we recommend at you apply as soon as possible rather than wait until the published closing date

This is an advert for our job vacancy, and therefore may not be inclusive of all assigned duties, responsibilities, or aspects of the role described, and may be amended at any time at the sole discretion of Costain.  

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