Arnel Mandilag
Civil Engineer at City of Portland
Portland, Oregon, United States
Summary
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Senior🎓
Top SchoolArnel Mandilag is a Civil Engineer with 11 years of experience specializing in hydraulic and hydrologic modeling for Portland's collection system, currently serving as Engineer III at the City of Portland Bureau of Environmental Services. He combines domain expertise with software skills—particularly C# and Delphi—to develop tools, maintain systemwide hydraulic models, and integrate GIS and databases for planning and design projects. Arnel has contributed to major efforts such as CSO tunnel planning and the bureau’s ongoing System Plan update, translating complex system performance needs into practical modeling solutions. Known for bridging field engineering and software development, he builds utilities that streamline analyses and improve long-term system resilience. Based in Portland, he leverages local system knowledge and programming craft to deliver reliable, data-driven engineering outcomes.
11 years of coding experience
Bachelor of Science, Civil Engineering, Bachelor of Science, Civil Engineering at University of Portland
English, TagalogGithub contributions (5)
PDXBES/SCIP
May 2015 - Jun 2017
Contributions:1 push, 1 branch in 2 years 1 month
PDXBES/PacSizingTool
Aug 2015 - Nov 2017
Contributions:2 pushes, 1 branch in 2 years 3 months
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