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OnSite Recruitment Limited

Junior Mechanical Estimator

Chelmsford
£30k – £40k/yr
Posted 1 day ago
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Junior Mechanical Estimator (Thermal Insulation)

Location: Chelmsford

Job Type: Full-Time, Permanent (Monday-Friday)

Salary: £30,000-£40,000 DOE + Benefits

About the Company

Our client is a well-established and growing thermal insulation contractor with over 25 years of industry experience, delivering high-quality insulation solutions across commercial, industrial and energy sectors. Due to continued growth and a strong order book, they are looking to appoint an experienced Junior Mechanical Estimator.

The Role

We are seeking a Junior Mechanical Estimator with proven experience to manage projects from quantity take-off through to final quotation and tender submission.

Working closely with suppliers, subcontractors, and clients, you will prepare accurate, competitive tenders and play a key role in securing new business.

Reasons to use Rodeo

I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

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Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.

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Key Responsibilities

  • Review drawings, specifications and tender documents.
  • Complete detailed quantity take-offs for pipework, ductwork, vessels and tanks.
  • Prepare labour, material and subcontractor cost estimates.
  • Use mechanical estimating software to produce estimates and quotations.
  • Obtain and assess supplier and subcontractor pricing.
  • Prepare tender submissions and commercial cost breakdowns.
  • Identify risks, opportunities and value-engineering solutions.
  • Attend site surveys and pre-tender meetings where required.
  • Support negotiations and project handover following contract award.

Requirements

  • Proven experience as a Junior Mechanical Estimator preferably within the thermal insulation industry but not essential.
  • Experience managing projects from take-off to final quotation.
  • Experience with Ensign software or similar.
  • Strong understanding of insulation systems, materials and specifications.
  • Ability to interpret technical drawings and project documentation.
  • Excellent commercial, numerical and communication skills.
  • Strong Microsoft Excel skills.

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What's on Offer?

  • Competitive salary and benefits package.
  • Opportunity to join a well-established business with over 25 years of success.
  • Long-term career progression.
  • Diverse and high-profile projects.
  • Supportive team environment and ongoing development.

Based on the south coast of England, The On Site Group are a specialist recruitment consultancy supplying into the Construction, M & E, Industrial and Data Centre sectors. We have successfully supplied throughout the UK and Europe from Helsinki to Amsterdam and Paris to Frankfurt.

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Skills

Mechanical Estimating
Quantity Take-off
Tender Submission
Thermal Insulation
Ensign Software
Microsoft Excel
Technical Drawing Interpretation
Cost Estimation
Value Engineering
Commercial Awareness
Numerical Skills
Communication Skills

Location

Chelmsford, England, United Kingdom

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