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Owen Castillo
Civil Engineer, P.E.

Built to hold.Designed to last.

Owen Castillo, Civil Engineer, P.E.
P.E. Licensed Engineer

I'm a licensed civil engineer specializing in structural design and site development — bridges, foundations, and the load paths that keep buildings standing for a hundred years.

45+Projects delivered
$280MConstruction value
11Years licensed P.E.
3States licensed
AutoCAD Civil 3D /RISA-3D /STAAD.Pro /HydroCAD /ArcGIS /Bluebeam /PLAXIS /Revit /AutoCAD Civil 3D /RISA-3D /STAAD.Pro /HydroCAD /ArcGIS /Bluebeam /PLAXIS /Revit /
01About

Math, checked twice.

Focus areas

  • Structural design & load analysis
  • Site development & grading
  • Construction administration & inspection
  • Code compliance & permitting

I'm a licensed civil engineer who works across structural design, site development, and construction administration. I've spent eleven years turning soil reports and load calculations into buildings, bridges, and roads that hold up under real-world conditions.

A design that only works on paper isn't finished. I check my own math against code, against the contractor's constraints, and against the worst-case load — not just the average one.

Denver, CO·P.E. License #CO-48213
Open to senior structural roles
02Built Work

Projects on the ground.

NO. 01Structural Design · Municipal

Cedar Creek Pedestrian Bridge

Designed a 140-ft steel truss pedestrian bridge spanning a flood-prone creek, engineered for a 100-year flood event.

Civil 3DRISA-3DSTAAD.Pro
  • Approved on first permit submission
  • 18% under construction budget
  • Rated for 100-year flood loading
NO. 02Geotechnical · Residential

Harbor View Apartments — Foundation Redesign

Redesigned the foundation system for a 6-story residential building after a survey revealed expansive clay soil.

Civil 3DPLAXISExcel/VBA
  • Eliminated need for deep piles, saving $1.2M
  • Settlement reduced to under 1 inch
  • Avoided a construction delay
NO. 03Site Development · Stormwater

Maple District Site Grading & Drainage

Led grading and stormwater design for a 22-acre mixed-use development, managing a 100-year storm event on-site.

Civil 3DHydroCADArcGIS
  • Zero net increase in runoff
  • Cut/fill balanced on-site, no import or export
  • Permitted in a single review cycle
NO. 04Structural · Commercial

Lincoln Ave Parking Structure

Structural design for a 5-level, 600-stall precast concrete parking structure adjacent to an active rail line.

RISA-3DCivil 3DBluebeam
  • Designed for rail-adjacent vibration loads
  • 600 stalls delivered on schedule
  • Zero structural RFIs during construction
03Experience

Eleven years on record.

Senior Structural Engineer · Hargrove & Pine Engineering

2019 — Present

Lead structural design for municipal and commercial projects, and stamp drawings as engineer of record.

P.E. of RecordStructural DesignTeam Leadership

Project Engineer · Caldwell Civil Group

2015 — 2019

Managed site development and stormwater design for mixed-use and residential developments.

Site DevelopmentStormwater DesignPermitting

Engineer-in-Training · Caldwell Civil Group

2013 — 2015

Rotated through structural, geotechnical, and transportation teams while completing P.E. licensure.

Structural AnalysisField InspectionAutoCAD
04Skills

Measured proficiency.

Structural Analysis

RISA-3D / STAAD.Pro
92%
Load & Seismic Analysis
88%
AutoCAD Civil 3D
95%
Steel & Concrete Design (AISC/ACI)
90%

Site & Geotechnical

Grading & Drainage Design
85%
HydroCAD / Stormwater Modeling
80%
ArcGIS
70%
Geotechnical Report Review
82%
05Credentials

Licenses & education.

Professional Engineer (P.E.) — Civil

NCEES / State Board

2016

B.S. in Civil Engineering

Colorado School of Mines

2013

OSHA 30-Hour Construction Safety

OSHA

2021

Envision Sustainability Professional

ISI

2022

06Contact

Have a site to spec?

New construction, a structural review, or a permit set that needs a stamp — send the details and I'll follow up.

LicenseP.E. License #CO-48213

© 2026 Owen CastilloDenver, CO