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Contract

Flow Assurance Engineer

Donovan Marrison Ltd
Leatherhead
money-bag £62.50/hour
Posted: 01 July 2026 (Today)
Closing date: 31 July 2026
Ref: 225316809

An exciting opportunity has arisen for an experienced Senior Flow Assurance Engineer to join a leading international engineering consultancy delivering concept, pre-FEED and FEED projects across the global energy sector.

Working within a specialist Process Engineering team, you will undertake flow assurance studies for upstream developments while supporting projects spanning oil & gas, hydrogen, ammonia, decarbonisation and other energy transition technologies.

Key Responsibilities

  • Carry out flow assurance studies for upstream projects.
  • Develop and run simulation models using OLGA, PIPESIM and other industry-standard software.
  • Perform steady state and transient hydraulic analyses.
  • Assess flow assurance risks including hydrates, wax, slugging, erosion and corrosion.
  • Produce technical calculations and high-quality engineering reports.
  • Support development of flow assurance philosophies and engineering procedures.
  • Present technical findings to project teams and clients.

Requirements

  • Degree qualified in Chemical or Process Engineering (or similar).
  • Minimum 10 years'' flow assurance experience.
  • Extensive hands-on experience with OLGA transient simulation software.
  • Experience using PIPESIM, PIPENET and pipeline simulation tools.
  • Strong understanding of thermo-hydraulics and pipeline sizing.
  • Experience of shutdown, startup, blowdown and transient analyses.
  • Knowledge of surge pressure and overpressure protection studies.
  • Good understanding of flow assurance challenges and mitigation techniques.
  • Excellent report writing and communication skills.
  • Ability to work independently and within multidisciplinary engineering teams.

Desirable Experience

  • Multiflash.
  • Aspen HYSYS.
  • FEED and Concept Studies.
  • Topside Process Engineering.
  • Client-facing consultancy experience.

This role offers the opportunity to work on technically challenging international projects within a collaborative consultancy environment that actively supports professional development and career progression.

Job Details:

Start date: ASAP

Rate: -62.50 / hour Outside IR35

Working hours: Full time contract - 5 days office based

Location: Surrey

Duration: c.6 months

All applicants must possess full, permanent UK right to work status.

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