Job Description


Control and Instrumentation Engineer


Salary depends on the candidate and experience; Pension; Health Insurance


Unit 5, the Courtyard, Glory Park Ave., High Wycombe, HP10 9TN

Vacancy Description

We are seeking a talented Control and Instrumentation Engineer to join our dynamic team. The ideal candidate will be responsible for designing and implementing control systems, process flow diagrams, and control strategies for wastewater treatment and recovery systems. They will play a key role in the development and automation of our systems, ensuring efficient, effective and safe operation. It will be required to gaining a thorough technical understanding of Esmil’s solution processes and Esmil’s equipment.


  • Developing P&ID and PFDs in conjunction with the process engineers.
  • Developing the control philosophy & Cause & Effect Diagram.
  • Reading, Designing and Drafting Instrument Loop Diagrams, Electrical Schematics and Wiring diagrams.
  • Understanding, calculation, checking of cable sizes and cable schedules.
  • Select efficient and cost-effective instrumentation and auxiliary equipment.
  • Creating the specifications for the control panel.
  • Creating the purchase specifications for the instruments and electrical components.
  • Creating FAT specification and involvement during FATs.
  • Providing field support for pilot trials, installations, commissioning, or any other field works.
  • Participate in Hazop / SIL / Operability Studies at UK/Overseas Sites.
  • Working collaboratively with other internal departments.
  • Liaising with the clients, suppliers, contractors and relevant authorities.
  • CAD use for electrical, Instrumentation and P&ID Drawings

Required qualifications:

  • To have experienced in using CAD for Electrical, Instrument and Piping drawings including:

P&IDs & Equipment Layout

Wiring Diagrams

Panel Layouts

Panel Schematics

Skid Layouts

Electrical Single Line and Block Cabling Diagrams

Electrical Connection Diagrams

  • Strong knowledge of instrumentation selection, including sensors, analysers, valves, and control systems.
  • Proficiency in developing process flow diagrams, P&IDs, and control strategies using engineering software (e.g., AutoCAD, P&ID software).
  • Understanding and ensuring compliance with relevant health and safety regulations and quality standards. Familiarity with Hazard and Operability Studies (Hazop) and other risk assessment techniques.
  • Good communication skills and ability to work collaboratively in a multidisciplinary team.
  • Attention to detail and ability to prioritize tasks in a fast-paced environment.
  • Commercial awareness

Desirable qualifications:

  • Bachelor’s degree in Engineering (Electrical & Instrumentation, or related field).
  • Understanding of Water/Wastewater Treatment Systems in Industrial sectors including Municipal, O&G, biogas etc.
  • Experience in instrumentation and process engineering, preferably in water and wastewater treatment or similar industries.
  • Understanding of specification for the design and selection of equipment in Hazardous Areas.
  • International exposure, European Languages.
  • Familiarity with project management software tools.
  • Possession of problem-solving and troubleshooting skills.
  • Experience with procurement processes.
  • Experience in working with multiple tasks.
  • Motivation to build a career.


  • Comprehensive benefits package including healthcare, retirement plans, and more.
  • Dynamic and collaborative work environment with opportunities to work on innovative projects.
  • Opportunities for professional development and career advancement.

If you are passionate about environmental sustainability and have the skills and experience to excel in this role, we encourage you to apply and join our team at Esmil Process Systems Ltd.

How to Apply:

Please send your resume and cover letter outlining your qualifications and relevant experience to We look forward to hearing from you!

Contact ESMIL

For further information or enquiries, please complete the contact form or e-mail Esmil direct at

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Esmil Group

Esmil Group stands as a premier global manufacturer, crafting cutting-edge equipment for wastewater treatment and sludge dewatering. Additionally, we specialize in delivering advanced membrane systems tailored to various industries.

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Equipment for Wastewater Treatment & Sludge Dewatering.

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Equipment for Sludge Dewatering in the USA.

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Membrane Systems.