Cornelius Ashbury-Opoku

Commercial Overhead Door Technician

Lubbock, TX, United States

Professional Summary

Commercial overhead door technician with 9+ years installing, servicing, and troubleshooting sectional, rolling steel, high-speed, and fire-rated doors plus dock levelers for distribution centers, hospitals, and retail across the South Plains. IDEA-accredited Door Systems Technician known for first-visit fixes, clean UL 10B/NFPA 80 fire door drop tests, and safe work on lifts.

Employment History

Lead Commercial Door Technician

Caprock Door & Dock Services · Lubbock, TX

Mar, 2021 · Present

Service 6–8 commercial calls/day across 40+ accounts incl. 3 distribution centers with 120+ dock positions Cut repeat callbacks 31% by standardizing spring-cycle sizing and limit-switch setup on rolling steel operators Perform annual NFPA 80 fire door drop tests on 300+ doors/year with 100% AHJ pass rate Install high-speed fabric doors and LiftMaster/Chamberlain operators with photo-eye and edge-sensor safety systems Train 3 junior techs on torsion spring safety, cable winding, and lockout/tagout

Overhead Door Installer

Plains Commercial Doors · Amarillo, TX

Jun, 2017 · Feb, 2021

Installed 450+ sectional and rolling steel doors on new warehouse and retail builds Retrofitted 60 dock levelers and seals, cutting reported trailer gaps and energy loss Read architectural door schedules and shop drawings to stage hardware and openings Maintained zero recordable injuries over 4 years on scissor and boom lifts

Garage Door Service Tech (Residential)

West Texas Door Co. · Lubbock, TX

Aug, 2015 · May, 2017

Replaced torsion/extension springs, cables, rollers, and openers on 1,000+ residential doors Upsold maintenance plans at a 22% attach rate

Education

Certificate, Industrial Maintenance Technology

South Plains College · Levelland, TX

Aug, 2014 · May, 2015

Skills

Sectional & rolling steel doors

High-speed doors

Fire door drop testing (NFPA 80)

Torsion spring sizing

Operators & controls (LiftMaster, Chamberlain)

Dock levelers & seals

Photo-eyes & safety edges

Lockout/tagout

Shop drawing reading

Customer communication

Courses

IDEA Accredited Commercial Door Systems Technician

International Door Association (IDEA)

Apr, 2019

Fire Door Inspection Training

DASMA

Mar, 2020

OSHA 30 Construction

OSHA Outreach Training Program

Sep, 2021

Aerial and Scissor Lift Operator

Certified Lift Operator Training

May, 2022

Languages

English · native

Spanish · intermediate