Senior Process Engineer

TN United Kingdom; Immingham; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading engineering consultancy seeks a Senior Process Engineer to lead high-impact energy and industrial projects. The role involves process simulations, equipment sizing, and mentoring junior engineers, offering a competitive salary and benefits for a qualified candidate looking to advance their career.

Qualifications

• Proven experience in EPC, energy, or industrial sectors.
• Strong knowledge of UK legislation and compliance (HSE, ATEX).
• Experience with pressure relief calculations and heat exchanger design.

Responsibilities

• Deliver detailed process engineering work including PFDs and P&IDs.
• Conduct process simulations and hydraulic modelling.
• Mentor junior engineers and ensure quality standards.

Skills

Process Engineering

Communication

Team Leadership

Education

Degree in Chemical or Process Engineering

Tools

Aspen HYSYS

FlareNet

Excel

Job description

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North East Lincolnshire (with UK-wide project exposure)
Permanent | Full-Time
Competitive salary + benefits

iO Associates are supporting a well-established engineering consultancy as they seek to appoint a Senior Process Engineer into their process design team. This role offers the opportunity to lead high-impact energy and industrial projects from concept through to delivery.

As a senior technical figure, you'll be responsible for process simulations, equipment sizing, relief systems, and safety/compliance studies, while guiding junior engineers and acting as a key interface with multi-disciplinary teams and clients.

Key Responsibilities:

• 
  Deliver detailed process engineering work: PFDs, P&IDs, datasheets, calculations
• 
  Carry out process simulations and hydraulic modelling using Aspen HYSYS, FlareNet, and Excel-based tools
• 
  Develop energy/mass balances, relief system design, and pressure drop calculations
• 
  Contribute to HAZOP, LOPA, SIL, and DSEAR studies across projects
• 
  Ensure alignment with environmental standards, ATEX/DSEAR compliance, and regulatory frameworks
• 
  Support proposal development, scope definition, and technical input during FEED, EPC, and commissioning stages
• 
  Mentor and review work from junior engineers, ensuring quality, accuracy, and safety standards are maintained

What You'll Bring:

• 
  Degree-qualified in Chemical or Process Engineering
• 
  Proven experience in process engineering roles within EPC, energy, or industrial sectors
• 
  Strong working knowledge of UK legislation and compliance (HSE, ATEX, etc.)
• 
  Advanced user of AspenTech tools, including HYSYS and FlareNet
• 
  Experience with pressure relief calculations, heat exchanger design, pump/valve sizing
• 
  Excellent communication and team leadership skills

If you're looking to take the next step in your process engineering career-working on technically complex, safety-critical, and high-value UK projects-this is a standout opportunity to join a forward-thinking and well-respected team.

Apply now or contact Tommy Collishaw at iO Associates for a confidential discussion.