Field Service Engineer

Salary/Rate:£45k - 55k per year
Working Options:On-site
Job type:Permanent
Town/City:Hertfordshire
County:Hertfordshire
Specialism:Metals & Engineering
Job ref:AL25
Post Date:October 7, 2025
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Meet Our Recruiter

About the Role

Field Service Engineer

Hertfordshire

£45,000 – £55,000 + company vehicle + bonus + overtime + benefits

 

Aspion Search is partnering with a specialist engineering group delivering high-spec projects across hospitals, laboratories and cleanroom environments. They are seeking a Field Service Engineer to validate and test critical ventilation and cleanroom systems to HTM 03-01, ISO 14644 and GMP standards.

 

The Business:

  • A respected and expanding provider of commissioning, validation, and compliance services across the UK, supporting the NHS, pharmaceutical, and manufacturing sectors.
  • Offers structured training, clear career progression, and ongoing professional development.
  • A forward-thinking, collaborative team where your work directly impacts patient safety, product quality, and clean air compliance.

 

The Role of the Field Service Engineer:

Field-based UK role (travel and accommodation fully supported) using state-of-the-art, calibrated equipment to validate critical ventilation systems.

  • HEPA/ULPA filter integrity testing (DOP/PAO testing)
  • Airflow measurement for supply and extract systems
  • Calculation of air change rates
  • Velocity measurements within isolators and laminar airflow (LAF) cabinets
  • Monitoring and recording of pressure differentials
  • Airborne particle counting and analysis
  • Airborne microbial contamination monitoring
  • Surface sampling for microbial contamination
  • Carries out validation of:
    • Operating theatres
  • Microbiological safety cabinets (Class I–III)
  • Cleanroom environments
  • Including:
    • Particle counting
    • Smoke visualisation
    • HEPA filter testing & installation
    • Microbial air and surface sampling
    • Pressure differential measurements

 

About the Field Service Engineer:

  • Engineering or science qualification.
  • Over 2 year’s experience in cleanroom/HVAC validation within hospital, laboratory or pharmaceutical settings.
  • Strong understanding of supply & extract ventilation balancing.
  • Working knowledge of GMP, HTM 03-01 and P601.
  • Flexible to travel UK-wide with regular overnights.
  • Full UK driving licence.

 

Benefits of the Field Service Engineer:

  • Working Away Bonus: £35 per night (paid annually in December).
  • Company vehicle (fully expensed) + fuel card.
  • Mobile phone & laptop provided.
  • Optional company pension.
  • 25 days’ holiday + bank holidays.
  • Company card for all work-related travel/expenses.
  • Fully funded training and certifications.
  • Private healthcare.
  • Door-to-door pay (travel hours paid at single rate).
  • Overtime: time-and-a-half (Mon–Fri outside 08:00–17:00), double time on weekends.
  • 6-month probation; sick pay: 10 days at full pay.


If you thrive in regulated, high-spec environments and meet the criteria, I’d love to speak.

Find out more about our available opportunities or how I can help you further your career – contact me today.


Please contact Adele Lewis or click Apply Now.

Call: 0151 209 2050 or 07441934030

Email: adele.lewis@aspion.co.uk

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