Yna Rivera

Results-driven Civil Engineer / Lead Estimator with 10+ years of experience in cost estimation, quantity take-offs, bid preparation, and project cost analysis for structural steel works, mid- to high-rise buildings, industrial plants, warehouses, and bridge projects. Skilled in preparing accurate estimates, variation orders, bill of quantities (BOQ), and tender submissions. Proficient in Bluebeam, Fabsuite, AutoCAD, and Microsoft Office with a strong background in remote collaboration, document control, and deadline-driven deliverables.

Lead Estimator at DOWCO CONSULTANT PHILIPPINES INC. (A DeSimone Company) (2021-09 – Present)

• Lead cost estimation and pricing analysis for structural steel and construction-related project changes.
• Prepare comprehensive bid documents, quotations, tender submissions, and cost breakdowns for clients.
• Perform detailed quantity take-offs and material estimates using Bluebeam, improving estimation accuracy and reducing discrepancies by approximately 20%.
• Coordinate with project managers and department leads to validate project scope, pricing assumptions, and budget allocations.
• Conduct final QA review of all bids, estimates, and variation orders prior to submission.
• Ensure compliance with project specifications, client requirements, and contractual scope.

Project Estimator 2 at CRYSTAL STEEL FABRICATORS PHILS. INC. (2017-10 – 2021-05)

• Prepared detailed cost estimates for structural steel fabrication and installation projects.
• Analyzed project revisions and change orders to ensure accurate pricing adjustments.
• Produced bid proposals and supporting cost documentation for tender submissions.
• Utilized Fabsuite and MEP software for material take-offs and bill of materials generation.
• Conducted final review of estimate packages and variation orders before client submission.
• Supported successful project acquisition through accurate and competitive pricing.

Engineer Trainee / Cadet Engineer at GRANDSPAN DEVELOPMENT CORPORATION (2013-06 – 2015-06)

• Assisted in preparing cost estimates, bid documents, and material requirements.
• Supported bidding meetings and project scope clarifications.
• Monitored project material consumption and prepared delivery/loading plans.
• Assisted site engineers and foremen in material reconciliation and usage tracking.
• Maintained project material records for awarded contracts.

Bachelor of Science in Civil Engineering in Civil Engineering – Polytechnic University of the Philippines (2012 – 2017)

Bachelor of Science in Architecture in Architecture – Central Colleges of the Philippines (2008 – 2012)