Liam Sina
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Liam Sina Email & Phone Number

Estimator at GMF Contractors
Location: Perth, Western Australia, Australia 5 work roles 2 schools
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✓ Verified Jul 2026 3 data sources Profile completeness 86%

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Current company
GMF Contractors
Role
Estimator
Location
Perth, Western Australia, Australia
Company size
37 employees

Who is Liam Sina? Overview

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Quick answer

Liam Sina is listed as Estimator at GMF Contractors, a with 37 employees, based in Perth, Western Australia, Australia. AeroLeads shows a matched LinkedIn profile for Liam Sina.

Liam Sina previously worked as Civil Estimator at Tracc Civil and Estimator at Zeke Consulting Group. Liam Sina holds Master Of Engineering - Meng, Civil Engineering (Structural Engineering) from Azad University (Iau).

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Email format at GMF Contractors

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GMF Contractors

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Profile bio

About Liam Sina

An accomplished and reliable Construction Professional with 8 years of expertise and experience in estimating various projects, including roadworks, stormwater and sewer drainage, bulk earthworks, civil infrastructure, concrete works, AIS switchgears, enabling works and subdivisions.Expert in preparing and submitting tender documentation and identifying potential risks through clear communication and coordination with colleagues, clients, and stakeholders. Driven to minimize costs by continually investigating the best cost-cutting methodologies and suppliers.

Current workplace

Liam Sina's current company

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GMF Contractors
Gmf Contractors
Estimator
Perth, WA, AU
Website
gmfcontractors.com.au
Employees
37
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5 roles

Liam Sina work experience

A career timeline built from the work history available for this profile.

Civil Estimator

Tracc Civil

Perth, Western Australia, Australia

Estimator

Zeke Consulting Group

Melbourne, Victoria, Australia

❇️ Produced, supervised and reviewed reinforcement estimates using Expert Estimation and Bluebeam software of various large and medium-scale civil, residential, and school projects.❇️ Provided technical engineering information and complete interpretation of plans, detail sheets, and specifications.❇️ Managed RFI’s to establish a smooth flow of information between Construction, Design, and Factory teams, identifying issues and inconsistencies.❇️ Supported ongoing projects as needed by procuring required materials and equipment for each project.❇️ Investigated clients’ claims thoroughly.❇️ Performing site inspections to improve project scope, risks, and opportunities comprehension.❇️ Assisted in existing project costing & coordination.❇️ Planned and programmed projects due to the construction speed and requirements.❇️ Controlled construction and production limitations, and potential risks.❇️ Liaised regularly with clients, project managers, and project engineers and collaborated with reputable companies such as CPB Contractors, John Holland, Multiplex, TasWater, Laing O’Rourke.❇️ Participate in the vendor meeting and ensure technical and commercial documentation coherence.❇️ Provided detailed and consistent documentation and reports to the team leader.

Oct 2022 - Aug 2024

Estimator

Behsazan Pty Ltd (Civil Main Contractor)

❇️ Developed accurate First Principle Estimates and Bids for Civil Project tenders using related software.❇️ Prepared Bill of Quantities. ❇️ Followed up on submitted tenders for feedback.❇️ Conducted inspections to ensure work meets specifications.❇️ Submitted Claims, ETO, and Contractual Variation.❇️ Compared and evaluated quotes of sub-contractors/suppliers for required material, labour, and equipment, while identifying risks and opportunities❇️ Liaised with subcontractors/suppliers to ensure they fully understood the required scope of work, documents, and program.❇️ Prepared methodologies, construction programs, and schedules for tenders.❇️ Debriefed submitted tenders for feedback and continual improvement. ❇️ Controlled daily progress of site preparation, foundation work, structural framing, and finishing work, according to the schedule, drawings, and specifications.❇️ Controlled all technical regulations in the execution of concreting and welding operations.❇️ Controlled the excavation progress, footings, concrete pouring, and the installation of insulation, drywall, roofing, and flooring according to the QC and QA plan.❇️ Negotiated and built connections with sub-contractors to improve sales and lower costs.❇️Reviewed and controlled subcontractors' monthly invoices.

Dec 2017 - Aug 2022

Site Engineer

Apco (Tier 1 Civil And Infrastructure Company)

❇️ Prepared accurate project cost estimates, including materials, labour, and other expenses.❇️ Created project timelines and schedules.❇️ Controlled daily progress of site preparation, foundation work, structural framing, and finishing work.❇️ Ensured compliance with building codes and safety regulations.❇️ Controlled structures and elements regarding the design codes.❇️ Implemented quality control measures.❇️ Conducted inspections to ensure work meets specifications.❇️ Maintained accurate project documentation, including contracts, change orders, and project records.

Oct 2016 - Dec 2017
Team & coworkers

Colleagues at GMF Contractors

Other employees you can reach at gmfcontractors.com.au. View company contacts for 37 employees →

RG Robbie Giorgi Robbie Giorgi Colleague at Gmf ContractorsGreater Perth Area, Australia View → CT Corey Taseff Corey Taseff Colleague at Gmf ContractorsEaton, Western Australia, Australia View → NP Nicholas Puglia Nicholas Puglia Colleague at Gmf ContractorsGreater Perth Area, Australia View → TR Tharun Reddy Mandadi Tharun Reddy Mandadi Colleague at Gmf ContractorsMidland, Western Australia, Australia View → PE Paul Eimbrodt Paul Eimbrodt Colleague at Gmf ContractorsAveley, Western Australia, Australia View → FA Francisco Ansorena Francisco Ansorena Colleague at Gmf ContractorsPerth, Western Australia, Australia View → MF Muhamad Febriansyah Muhamad Febriansyah Colleague at Gmf ContractorsBanten, Indonesia View → PC Paul Chappell Paul Chappell Colleague at Gmf ContractorsBayswater, Western Australia, Australia View → MO Matty Oneil Matty Oneil Colleague at Gmf ContractorsGreater Perth Area, Australia View → JM Jye Mcdonald Jye Mcdonald Colleague at Gmf ContractorsPerth, Western Australia, Australia View →
2 education records

Liam Sina education

FAQ

Frequently asked questions about Liam Sina

Quick answers generated from the profile data available on this page.

What company does Liam Sina work for?

Liam Sina works for GMF Contractors.

What is Liam Sina's role at GMF Contractors?

Liam Sina is listed as Estimator at GMF Contractors.

Where is Liam Sina based?

Liam Sina is based in Perth, Western Australia, Australia while working with GMF Contractors.

What companies has Liam Sina worked for?

Liam Sina has worked for Gmf Contractors, Tracc Civil, Zeke Consulting Group, Behsazan Pty Ltd (Civil Main Contractor), and Apco (Tier 1 Civil And Infrastructure Company).

Who are Liam Sina's colleagues at GMF Contractors?

Liam Sina's colleagues at GMF Contractors include Robbie Giorgi, Corey Taseff, Nicholas Puglia, Tharun Reddy Mandadi, and Paul Eimbrodt.

How can I contact Liam Sina?

You can use AeroLeads to view verified contact signals for Liam Sina at GMF Contractors, including work email, phone, and LinkedIn data when available.

What schools did Liam Sina attend?

Liam Sina holds Master Of Engineering - Meng, Civil Engineering (Structural Engineering) from Azad University (Iau).

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