HVAC Design & Estimating Engineer (024-1257)

​​Looking for Philippines-based candidates

Job Role: HVAC Design & Estimating Engineer

Compensation range: $2,000 AUD - $3,000 AUD / Monthly

Engagement type: Independent Contractor Agreement

Work Schedule: This role is expected to align with the AU business hours (approx. 9 AM - 5 PM, Monday to Friday) for collaboration, but as a contractor, you’ll have flexibility in how you manage your time.

Who We Are: At Hunt St, we help Australian companies hire top remote talent in the Philippines. For this role, you will be engaged directly by the client as an independent contractor. We are not an outsourcing agency. All of our roles are 100% remote so you'll be able to work from home.

Who The Client Is: A commercial HVAC contractor based in Sydney, NSW. We design, supply, install, and maintain mechanical services for commercial and industrial clients across the greater Sydney metro area. We operate across new construction, major plant upgrades, and ongoing service and maintenance contracts.

As we grow, we are building a remote support team in the Philippines to assist our local technicians and project staff with estimating, technical, and administrative functions.

Role Overview: This role will provide design, estimating, tendering, and heat load calculation support for commercial HVAC projects. You will work directly with the business manager to prepare accurate quantity take-offs, bills of quantities, tender submissions, and mechanical load calculations.

This role will begin on a full-time basis. You must be comfortable working independently to tight deadlines, with a strong attention to detail and a solid understanding of Australian HVAC systems and commercial construction.

Key Responsibilities:

Design & Compliance

Assist with design work for HVAC installation projects in line with client and project requirements

Ensure all design and estimating work complies with relevant Australian standards, codes, and legislation (including the NCC, AS 1668, AS 3666, and AS/NZS 3000)

Keep up to date with changes to relevant Australian building codes and standards affecting HVAC design

Estimating & Quantity Take-offs

Measure and quantify materials and labour from PDF and CAD drawings

Produce accurate linear metre, m2, and item count take-offs for ductwork, pipework, equipment, and accessories

Prepare Bills of Quantities (BOQs) from drawings and project specifications

Maintain and update Excel-based take-off templates and estimating spreadsheets

Tender Preparation

Compile and format complete tender packages including scope breakdowns, pricing schedules, and compliance documentation

Review tender documents and RFQs to identify scope, inclusions, exclusions, and conditions

Send Requests for Quotation (RFQs) to subcontractors and suppliers

Follow up and consolidate subcontractor pricing into the overall estimate

Assist with preparation of cover letters and tender submission documents

Variation Tracking

Log all variations raised during a project against the original scope of works

Maintain a variation register and assist in preparing variation claims for client submission

Track approval status of variations and flag outstanding items to the project team

Heat Load Calculations and duct sizing

Perform HVAC heat load calculations for commercial spaces using industry-standard software

Prepare room-by-room and system-level load summaries for design review

Assist with equipment selection based on calculated loads and required minimum flow rates

Ensure calculations align with relevant Australian standards including AS 1668 and NCC Volume 1

General Support

Assist with data entry and job setup in SimPro

Maintain accurate project files and documentation in OneDrive

Support quote follow-ups and client communication as directed

Requirements

Degree or diploma in Mechanical Engineering, Building Services, or a related field

Minimum 2 years' experience in HVAC design, estimating, quantity surveying, or a similar role

Proficient in Bluebeam Revu, CostX, Buildsoft, or similar estimating software

Strong ability to read and interpret mechanical drawings and project specifications

Experience performing heat load calculations using HAP, Trace 700, or equivalent software

Solid Microsoft Excel skills — able to build and maintain estimating templates

Familiarity with Australian construction standards and HVAC specifications is highly regarded

Strong written and spoken English

Reliable internet connection, suitable home office setup, and own computer

Desirable Experience

Experience working with Australian HVAC contractors or engineering consultancies

Knowledge of AS 1668, AS/NZS 3666, and NCC Volume 1 (Section J)

Familiarity with SimPro job management software

AutoCAD or Revit skills

Experience preparing O&M manuals or project handover documentation

Tools & Software

Estimating Bluebeam, CostX, Buildsoft, Excel

Load Calculations HAP, Trace 700 (or equivalent)

Job Management SimPro

File Storage OneDrive / Microsoft 365

Accounting Xero (reference only)

Work Arrangement & Expectations:

This is a remote role that will be set up as an independent contractor engagement.

To ensure alignment and transparency, successful candidates will be expected to:

Disclose any existing ongoing roles or client work

Reflect this engagement on their LinkedIn profile (clearly marked as “Independent Contractor”)

Originally posted on Himalayas