Senior Process Engineer

Company: ESL UK
Apply for the Senior Process Engineer
Location: Manchester
Job Description:

We are looking for an experiencedSenior Process Engineerto join our team delivering process design acrosswater and wastewater projects.

This role is suited to a process engineer with strong technical capability who enjoys developing effective treatment solutions, taking ownership of designpackagesand supporting the development of junior engineers.

You will play a key role in deliveringhigh-quality,compliantand efficient process designs, working closely with multidisciplinary teams and clients across a range of projects.

The Role

As a Senior Process Engineer, you willbe responsible for delivering process engineering design across projects within the water sector.

Your responsibilities will include:

  • Producingdesign deliverables that meet safety,qualityand regulatory requirements
  • Developingefficient and practical process design solutionsfrom project scopes and site information
  • Communicating design solutions clearly withclients and project teams
  • Directing and supportingjunior engineers and graduates
  • Preparingdesign risk assessments,reportsand technical specifications
  • Carrying outmass balances, processsizingand hydraulic calculations
  • Preparingprocess flow diagrams, controlphilosophiesand commissioning strategies
  • Ensuring designscomply withrelevant technical standards, professionalguidanceand water company requirements
  • Ensuring project design changes areproperly implemented and recorded
  • Workingin accordance withformal design processes and procedures
  • Estimatingdesign hours and supporting project planning
  • Attending and presenting atHAZOP, ALM, KM and other design review meetings

About You

We are looking for a capable and motivated process engineer with strong experience in the water sector and a desire to continue developing their technicalexpertise.

It’s essential that you have:

  • Around10 years’ process design experience within the regulated water industry
  • Strong understanding ofwastewater treatment processes and plant design
  • Experience deliveringprocess design for water and/or wastewater projects
  • Degree, HND or significant practical experience fromtechnician level progression
  • Good IT and digital capability

It’s desirable for you to have:

  • Chartered Engineer status
  • Experience across bothclean water and wastewater projects
  • Experienceparticipatingin or supportingHAZOP studies(ideally with experience leading elements)
  • Full UK driving licence and access to a vehicle

Why Join Us?

We are a growing engineering consultancy delivering projects across the water sector, where engineers have the opportunity to take ownership of their work and develop their careers.

In this role, you will:

  • Lead process design packages across projects
  • Work closely with multidisciplinary engineering teams
  • Support the development of junior engineers
  • Build experience toward Principal Process Engineer level

Our Manchester office offers free parking, excellent transport links and access to a fully equipped gym with changing facilities, alongside a collaborative and supportive environment.

We also offer:

  • 23 days annual leave + bank holidays, increasing with service
  • Option to purchase additional leave
  • Chartership mentoring and support
  • Regular CPD sessions and industry-led learning
  • Monthly team brunches and quarterly socials
  • Cycle to Work scheme and free fruit in the office

We are primarily office-based but offer flexible hybrid working arrangements.

Contract roles may be outside IR35

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Posted: April 17th, 2026