Commercial Manager

Location: On site / Dublin, Ireland
job type: Permanent / Full-time
Sector and subsector: Engineering Mechanical
Salary: Competitive Salary

About Leo Lynch

Leo Lynch is a leading mechanical and process engineering contractor, delivering technically complex projects across the semiconductor, life sciences, and advanced manufacturing sectors. Our reputation is built on engineering excellence, innovation, and a collaborative approach that drives results.

Role Overview

Leo Lynch is seeking a highly experienced Senior Quantity Surveyor / Commercial Manager. The successful candidate will have a mechanical bias, strong experience working on semiconductor or high-technology construction projects, and the ability to lead commercial teams from pre-construction through to final account. This is a senior team member role responsible for ensuring commercial performance, cost control, and contract compliance on mechanical projects.

Key Responsibilities Commercial & Contract Management

• Lead and manage all commercial functions across major mechanical and process projects.
• Ensure compliance with contract terms (NEC, FIDIC, or equivalent) and company procedures.
• Oversee procurement strategies, subcontractor engagement, and contract administration.
• Prepare, submit, and negotiate variations, claims, and final accounts.
• Identify and manage commercial risks and opportunities throughout the project lifecycle.

Measurement & Valuation

• Carry out detailed measurement and quantification of mechanical works directly from drawings, models, and site inspections.
• Prepare Bills of Quantities (BoQ), cost schedules, and rate build-ups.
• Develop, analyse, and agree project rates and star rates with clients and subcontractors.
• Maintain accurate measurement records for all works to support interim valuations and variations.

Cost Control & Reporting

• Produce and update detailed cost forecasts, cash flow projections, and financial reports.
• Track and report project cost performance, value of work done, and profitability.
• Support project teams with cost data for decision-making and risk mitigation.
• Prepare, submit, and agree monthly interim payment applications in accordance with contract terms.
• Assess and certify subcontractor payment applications, ensuring compliance and value accuracy.
• Manage project change control processes and ensure timely commercial communication with stakeholders.
• Lead and mentor project QS and commercial team members.
• Work closely with engineering, planning, and project management teams to ensure alignment between technical and commercial objectives.
• Build strong relationships with clients, suppliers, and subcontractors to ensure transparent and efficient project delivery.

Qualifications & Experience

• BSc in Quantity Surveying, Construction Economics, or equivalent degree (essential).
• Professional accreditation (MRICS, SCSI, or equivalent) desirable.
• Minimum 10 years' experience in mechanical quantity surveying and commercial management.
• Proven track record on semiconductor, cleanroom, or high-tech industrial projects.
• Strong mechanical services background with ability to interpret technical drawings and specifications.
• Expertise in measurement, rate development, valuations, and cost reporting.
• Excellent analytical, negotiation, and communication skills.
• Proficiency in cost management software and Microsoft Office suite.