Mechanical Estimation Pre-Construction Engineer

Sensori; Dublin; On-site; EUR 55,000 - 75,000; Full time

Job summary

Sensori Group in Dublin is seeking an experienced Mechanical / Building Services Engineer to join our Estimation Team. The role focuses on reviewing tender documentation for large-scale mechanical projects, particularly data centres, across Ireland and Europe.

You will support commercial strategy, coordinate with suppliers, and prepare tender submissions with clear technical narratives. A third-level degree and 3+ years' experience required, with travel to sites as needed.

Qualifications

• Third level qualification in Building Services Engineering.
• 3+ years' experience in mechanical contracting or consulting.
• Experience with tender documentation and data centres desirable.
• Excellent MS Office skills and ability to present technical information clearly.

Responsibilities

• Review tender design and technical scope for mechanical works.
• Prepare technical summaries and RFIs.
• Support estimation team with procurement and cost planning.
• Attend site surveys in Ireland and Europe.

Skills

Tender analysis

Building services

Mechanical systems

Pre-construction support

Client communication

Education

Bachelor's degree in Building Services Engineering

Tools

BIM 360

Procore

Aconex

Job description

Sensori

Location: On site / Ballycoolen, Dublin, Co. Dublin, D15 AP2D, Ireland
job type: Permanent / Full-time
Sector and subsector: Engineering | Mechanical
Salary: Negotiable salary

Due to our continued growth across Ireland and recent expansion into the European data centre market, Sensori Group is seeking an experienced Mechanical / Building Services Engineer to join our Dublin-based estimation division.

This newly created role has been developed to support the Estimation Team during the tender process for Mechanical projects across Ireland and Europe, with a strong focus on the data centre sector. The successful candidate will play a key role in reviewing tender technical documentation, supporting supply chain engagement, and ensuring that tender submissions are technically comprehensive and commercially aligned. Working closely with the Estimation Team, the ideal candidate will contribute to the technical development of bids while also supporting commercial strategy and tender deliverables.

Key Responsibilities

Tender Design Review & Technical Scope Analysis

• Review Mechanical tender documentation for large-scale projects ensuring technical clarity and scope completeness.
• Identify design gaps, coordination issues, or areas needing clarification to support accurate and complete pricing by the Estimation Team.
• Provide structured, clear summaries of complex design information to support estimators in developing accurate costs.
• Assist in the preparation of Requests for Information (RFIs) and technical queries.
• Review Mechanical equipment, subcontractor and specialist supplier packages for compliance with performance specifications and design intent.
• Develop technical comparisons across multiple vendor proposals to support procurement recommendations.
• Lead or attend technical review meetings with vendors to ensure scope alignment and inclusion of all critical elements.
• Identify exclusions or scope gaps in supplier quotes and ensure these are addressed prior to final submission.

Support the development of Mechanical-specific sections of tender returns, including:

• Overview of Mechanical works
• Construction methodologies and sequencing
• Risks and mitigation strategies
• Value engineering opportunities
• Procurement lead times and programme impacts
• Proposed suppliers and technical schedules
• Contribute to the tender write-up to ensure technical clarity and quality across all Mechanical elements.

Post-Tender & Early Pre-Construction Support

• Participate in post-tender meetings, clarifications, and BAFO submissions to provide ongoing technical input and ensure alignment with client expectations.
• Remain involved in successful projects during the early pre-construction phase, supporting supply chain engagement, cost updates until handover to the project delivery team.
• Assess and review potential alternative design solutions and equipment options for budget and technical optimisation.

Site Engagement

• Attend site surveys in Ireland and Europe during estimation period to review project scope.

Requirements & Experience

• Third level Qualification in Building Services Engineering.
• Minimum 3+ years' experience in a Mechanical contracting or consulting environment, ideally with exposure to pre-construction roles.
• Experience interpreting and reviewing Mechanical tender designs, specifications, and technical documents.
• Prior exposure to data centre projects is desirable.
• Strong organisational and communication skills with an ability to present technical information clearly.
• Excellent Microsoft Office skills – particularly Word and Excel.
• Familiarity with platforms such as BIM 360, Procore, or Aconex is an advantage.
• Willingness to travel for site surveys in Ireland and mainland Europe as required.
• Strong technical review and tender scope analysis capability.
• Ability to identify design gaps, risks, clarifications, and coordination issues.
• Strong vendor, subcontractor, and specialist package review skills.
• Ability to develop clear technical tender narratives and proposal content.
• Excellent communication, collaboration, and technical reporting skills.