A Civil Engineer
Principal-Led Precision
Isaac Tiley, PE, founded A Civil Engineer LLC (ACE) to provide a more agile, high-velocity alternative to traditional firm hierarchies. With over 20 years of experience across Colorado, Wyoming, and Arizona, Isaac serves as the direct point of contact for every project.
By working one-on-one with a veteran Principal Engineer, clients bypass administrative overhead and junior-level hand-offs, ensuring that grading, drainage, and utility plans are executed with technical accuracy from day one.
Corer Services & Expertise
ACE specializes in the full lifecycle of municipal and private infrastructure, providing senior-level oversight in the following domains:
Infrastructure & Site Development: Transforming raw land into functional residential subdivisions and large-scale master-planned communities. ACE optimize project phasing to minimize capital requirements and accelerate time-to-market.
Water Resources & Stormwater Management: Advanced hydraulics and hydrology, including HEC-RAS modeling, floodplain analysis, and complex detention/retention systems compliant with MS4 and Mile High Flood District (MHFD) standards.
Utility Systems Engineering: Expert design and modeling of wet utilities, including sanitary sewer force mains, water distribution networks, and fire flow modeling. ACE offers verified SUE Quality Level A data for high-accuracy conflict resolution.
Municipal Engineering: A proven track record serving as Town Engineer and providing on-call review services for local municipalities.
Roadway & Transportation: Comprehensive road and drainage improvement plans, roadway geometry, and utility coordination.
Construction Administration: Dedicated technical oversight, including site inspections, earthwork analysis (cut/fill), and professional certifications for as-builts.

ACE Credentials & Technical Proficiency
Licensed Professional Engineer (PE):
- Arizona #16338
- Colorado #46779
- Wyoming #78805
Advanced Toolset:
AutoCAD Civil 3D
HEC-RAS & StormCAD
WaterGEMS & SewerGEMS
GIS & EPANET

Commitment to Sustainable Design
ACE integrates sustainability as a core financial and environmental strategy. By utilizing smart engineering, to minimize operational costs while maximizing site efficiency.
- Low Impact Development (LID): Managing stormwater at the source through green infrastructure and natural filtration to mimic natural hydrological cycles.
- Resource Management: Utilizing advanced modeling (WaterGEMS/SewerGEMS) to optimize pipe sizing, reducing material waste and energy consumption.
- Earthwork Optimization: Precise Civil 3D analysis to balance cut/fill on-site, significantly reducing transportation emissions and hauling costs.
- Erosion & Environmental Protection: Comprehensive SWMP/SWPPP development and management to protect local waterways and sensitive terrains.
Why Choose ACE?
The ACE reputation is built on decisive execution. We leverage lean methodologies and advanced design technology to outpace traditional infrastructure timelines. When you partner with ACE, you aren’t just hiring a firm; you are gaining a dedicated Principal Engineer committed to moving your vision from concept to completion with maximum speed and precision.
Executive Summary: A Civil Engineer LLC (ACE)
A Civil Engineer LLC, provides specialized civil engineering for those who value speed and technical accuracy. A Principal Civil Engineer, PE, personally oversees every project, ensuring that grading, drainage, and utility plans are executed efficiently and sustainably from day one.
The Principal Advantage
A Civil Engineer LLC (ACE) provides high-velocity civil engineering and land development consulting, led by Isaac Tiley, PE. By working directly with a veteran Principal Engineer with over 20 years of experience, clients bypass traditional firm hierarchies to receive immediate, expert-level solutions. ACE specializes in transforming complex infrastructure challenges into precise, actionable designs with a focus on speed, technical accuracy, and principal-led accountability.
Sustainable & Precise Execution
ACE integrates Sustainable Design as a core strategy to minimize operational costs and environmental impact. Using advanced tools like AutoCAD Civil 3D, WaterGEMS, and SewerGEMS, we optimize pipe sizing and earthwork to reduce material waste and haul-off requirements.
Licensed Professional Engineer (PE) in Colorado, Wyoming, and Arizona.
Client-Centric Approach
The ACE philosophy is working one-on-one with a Principal Civil Engineer, PE, ensuring your project’s unique challenges are addressed with immediate, expert-level solutions. By prioritizing direct communication over firm hierarchy, ACE moves your vision from concept to completion with maximum speed and precision, through direct principal-led execution, you bypass large firm overhead for a nimble, high-velocity workflow.
Innovative Solutions
ACE leverages advanced civil engineering technology and lean methodologies to outpace traditional infrastructure timelines. By integrating the latest design tools, to delivers high-precision solutions that meet modern demands with a level of agility and technical accuracy that larger firms cannot match.
Core Services
Land Development & Site Design: Expert grading, drainage, and utility plans for residential subdivisions and large-scale master-planned communities.
Water Resources & Hydrology: Advanced HEC-RAS modeling, floodplain analysis, and MS4-compliant stormwater management systems.
Utility Systems Engineering: Specialized design and modeling for wet utilities (water/sewer) and Subsurface Utility Engineering (SUE) Quality Level A.
Municipal & Transportation: On-call Town Engineering services and complex roadway/drainage improvement plans.
Construction Administration: Technical oversight, earthwork analysis (cut/fill), and professional certifications for as-builts.
Why ACE?
Agility: A nimble, high-velocity workflow that outpaces traditional firm timelines.
Precision: Senior-level oversight on every calculation and drawing from day one.
Direct Access: One-on-one collaboration with the Principal Engineer.




