Registered Civil Engineer · Construction Estimator · Draftsperson
I help construction teams prepare accurate quantity takeoffs, engineering drawings, Bills of Quantities (BOQs), cost estimates, and organized technical documentation for infrastructure and building projects.
My work transforms engineering drawings into reliable information that helps teams plan, estimate, and deliver projects with confidence.
I'm John Glenn F. Cadenas, a registered Civil Engineer from Bohol, Philippines, with over three years of experience supporting public infrastructure projects through quantity takeoffs, cost estimates, Bills of Quantities (BOQs), technical drawings, and project documentation.
I began my career with the Department of Public Works and Highways (DPWH) as an Engineering Assistant and was promoted twice, first to Engineer I and later to Project Development Officer II. Throughout my career, I've contributed to the planning and development of water supply systems, reservoirs, multi-purpose buildings, covered courts, and other government infrastructure projects.
My approach is simple: understand the drawings, measure accurately, document clearly, and deliver work that project teams can rely on.
Today, I provide remote support in construction estimating, quantity takeoffs, engineering drafting, and technical documentation, helping contractors and builders deliver projects with accuracy and confidence. I use Bluebeam Revu, PlanSwift, AutoCAD, and Microsoft Excel to produce accurate, organized, and dependable estimates, drawings, and project documentation.
My engineering experience is Philippine public infrastructure. I'm now preparing for Australian estimating and drafting work, and I'd rather be direct about where that stands.
I've completed 45 hours of coursework in Australian construction cost estimation — residential projects, and plumbing and electrical — covering plan interpretation, industry-standard estimating tools, and Australian estimating practice.
Today I'm building a career that combines engineering, drafting, and construction estimating — and preparing to do that work for Australian teams. This portfolio is where I show what I've done and how I can help.
Three years with the Department of Public Works and Highways (DPWH), the Philippine government agency responsible for public infrastructure. My responsibilities grew from preparing documents to preparing projects.
Planning & coordination — worked upstream of construction, preparing projects before they were built.
Technical ownership — held responsibility for the engineering output itself, not just its preparation.
Foundation — learned the discipline that everything since has depended on: measure carefully, document clearly.
Promoted twice in three years through increasing responsibility in drawings, quantity takeoffs, and cost estimation.
Bachelor of Science in Civil Engineering
Bohol Island State University — Tagbilaran City, Bohol, Philippines
What I can do for your team — from measurement and pricing through to drawings and documentation.
I prepare quantity takeoffs, BOQs, and cost estimates by reading drawings closely and measuring what's actually documented.
I produce and revise coordinated drawing sets across architectural, structural, plumbing, and electrical disciplines.
I organize technical documents so project teams can plan, review, and build from information they can rely on.
Infrastructure and building projects from my work at DPWH, alongside an estimating portfolio of sample takeoffs and estimates completed during training. Select a project to see the full scope, responsibilities, and available documents.
Technical training in estimating, drafting, and structural engineering — including 45 hours of Australian construction estimating coursework, Bluebeam Revu and PlanSwift takeoff software training, and advanced STAAD.Pro structural analysis.