ULYSSES MEDINA GUILLEN
Dallas
Summary
Motivated and bilingual professional transitioning from customer service and sales into the electrical trade. Experienced as an Electrician Apprentice supporting installs, repairs, and electrical troubleshooting with a strong work ethic, reliability, and a willingness to learn.
Highly skilled Substation Technician with comprehensive knowledge in troubleshooting, maintenance and repair of electrical substation equipment. Proven ability to interpret complex blueprints and schematics, ensuring accurate installation of machinery. Demonstrated leadership skills with strong focus on safety protocols and efficiency improvements. Previous impact includes successful reduction of downtime through proactive preventive maintenance measures.
Overview
5
5
years of professional experience
1
1
Certification
Work History
Substation Technician
Northstar Energy solutions
Dallas
12.2025 - Current
- installs, tests, maintains, and repairs high-voltage equipment—such as transformers, circuit breakers, and switches—within electrical substations to ensure reliable power delivery.
- Conducted routine inspections to ensure system reliability.
- Collaborated with team members to troubleshoot equipment failures.
- Installed and maintained electrical equipment in substations.
- Operated testing devices to verify electrical system performance.
- Assisted in the implementation of safety protocols and procedures.
- Participated in training sessions for new substation technologies.
- Repaired equipment by troubleshooting and applying information learned from reading wiring diagrams, manuals and schematics.
Electrician Apprentice
Intex
Forney
11.2024 - 11.2025
- Assisted licensed electricians with installs, maintenance, and repairs.
- Pulled wire, installed conduit, mounted panels, and completed rough-in and trim-out tasks.
- Followed blueprints and work orders while learning diagnostic procedures.
- Operated electrical tools safely and kept work areas organized.
Parts Sales Associate
O'Reilly Auto Parts
05.2024 - 11.2024
- Assisted customers with selecting auto parts and maintained store inventory.
Parts Sales Associate
AutoZone
06.2023 - 04.2024
- Provided customer service, processed transactions, and restocked inventory.
Sales Associate
Guillen's Furniture
10.2021 - 05.2022
- Assisted customers with product selection and showroom organization.
Education
Texans Can Academy
Skills
- Bilingual (Spanish)
- Fast Learner
- Customer Service
- Electrical Tools
- Time Management
- Multi-tasking
- Decision Making
- Problem Solving
- Reliable Worker
Languages
Spanish
Native/ Bilingual
A1
English
Professional
A1
Certification
- OSHA 10
- Flagger certified
- CPR certified
- Electrician tdlr
References
- Oscar Guillen, 469-571-9428, salvador.mg214@gmail.com
- Alejandro Guillen, 469-774-1933, alexmedina803@gmail.com
Timeline
Substation Technician
Northstar Energy solutions
12.2025 - Current
Electrician Apprentice
Intex
11.2024 - 11.2025
Parts Sales Associate
O'Reilly Auto Parts
05.2024 - 11.2024
Parts Sales Associate
AutoZone
06.2023 - 04.2024
Sales Associate
Guillen's Furniture
10.2021 - 05.2022
Texans Can Academy