John Rell Cagalawan

Licensed Geodetic Engineer with experience in construction surveying, topographic and as-built surveys, earthwork volume calculations, CAD drafting, GIS, and GNSS-based surveying. Proficient in Autodesk Civil 3D, AutoCAD, ArcGIS, Surpac, E-Survey, and QGIS, with experience supporting dam construction, survey data processing, technical documentation, and quality assurance/quality control (QA/QC) activities.

Geodetic Engineer at National Irrigation Administration (NIA) — 11-16 Construction Company (Bayabas Rock fill Dam Project) (2025-11 – Present)

• Conducted surveying and mapping activities for a 15-hectare dam project, providing accurate survey data to support construction activities, project reporting, and coordination with the engineering team and stakeholders.
• Designed and evaluated a 107-meter drainage system, including its layout, alignment, and slope, while leading joint surveys with the NIA survey team to verify field conditions and support quality assurance and quality control.
• Performed earthwork and structural volume calculations for inlet (14,019.80 sq.m. surface area; 18,405.15 cu.m. volume), outlet (23,374.28 sq.m. surface area; 108,865.15 cu.m. volume), spillway (30,562.19 sq.m. surface area; 200,185.32 cu.m. volume) to support estimation and construction planning.
• Utilized Autodesk Civil 3D to develop construction surfaces, generate cross-sections, and calculate earthwork quantities for the 15-hectare dam project, providing data to support construction quantity estimate.
• Executed tunnel surveying operations for a 479.79-meter tunnel, establishing and verifying horizontal and vertical alignment, elevation, set out drill holes based on the drill plan, and excavation profiles, providing accurate survey control for underground construction accuracy, progress monitoring, and QA/QC.

Land Surveyor Intern at SN Saludo Surveying and Realty, Saludo Law Office (2024-06 – 2024-09)

• Conducted topographic, verification, relocation, subdivision, consolidation, and as-built surveys in collaboration with the survey team across varying terrain conditions, collecting and verifying field data for the preparation of accurate survey document and plans.
• Processed raw survey data and prepared Verified Survey Returns (VSR) in accordance with applicable requirements, producing complete survey documents for submission to LMB-DENR, LGU, LRA, and Registry of Deeds.
• Produced survey plans, maps, and technical drawings with technical description using AutoCAD, QGIS, and ArcGIS, transforming processed survey data into accurate documentation for land surveying and mapping requirements.
• Verified actual survey results in coordination with the Senior Engineer, reviewing survey documents before compilation and submission to help ensure accuracy and completeness for agency approval.
• Established, maintained, and verified survey control points and benchmarks in accordance with applicable international and national surveying standards, ensuring accurate and reliable reference data for land surveying.

Bachelor of Science in Geodetic Engineering – Caraga State University, Ampayon, Butuan City, Agusan del Norte, 8600 (2025 – 2025)