Ernesto Castelan
Redwood City
Summary
Detail-oriented technician with expertise in inspection, diagnostics, and mechanical repairs. Proven ability to manage client relationships and implement preventive maintenance techniques to ensure high customer satisfaction. Dependable professional with strong background installing, maintaining, and repairing systems and components. Maintains equipment safety and performance with in-depth inspections and corrections. Dedicated to quality and always professional. Highly-motivated employee with desire to take on new challenges. Strong work ethic, adaptability, and exceptional interpersonal skills. Adept at working effectively unsupervised and quickly mastering new skills. Experienced and dependable general worker with a proven track record of efficiently completing tasks in various settings. Skilled in manual labor, equipment operation, and maintaining a clean and organized workspace. Safety-conscious with a strong work ethic and the ability to adapt to different environments. Ready to contribute to a dynamic team and make a positive impact.
Overview
2026
2026
years of professional experience
Work History
Technician
specialized auto
Palo Alto
2025 - Current
- Conducted routine inspections on vehicles to identify maintenance needs.
- Assisted senior technicians in diagnosing mechanical issues and repairs.
- Utilized diagnostic tools to evaluate vehicle performance and systems.
- Maintained a clean and organized workspace to promote safety standards.
- Communicated with customers regarding service recommendations and vehicle status.
- Collaborated with team members to complete repairs efficiently and effectively.
- Documented repair processes and parts used for customer records and inventory management.
- Replaced defective components or parts as needed.
- Managed quality control and maintained high level of customer satisfaction.
- Completed scheduled appointments on time to drive quality service.
maintenance
Costco
Livermore
03.2023 - 03.2025
- Organized and coordinated maintenance projects as needed.
- Contacted building maintenance with facility-related requests.
- Implemented preventive maintenance measures as necessary.
- Performed basic maintenance on tools and equipment.
- Performed regular maintenance at Costco
- Completed day-to-day duties accurately and efficiently.
- Promoted high customer satisfaction by resolving problems with knowledgeable and friendly service.
- Worked with cross-functional teams to achieve goals.
- Monitored inventory levels and replenished shelves, maintaining a 100% in-stock rate during shifts.
Janitorial Maintenance Supervisor
jul janitorial service
Hayward
2020 - 2023
- Supervised daily cleaning operations for commercial and residential properties.
- Conducted regular inspections to ensure compliance with cleanliness standards.
- Managed inventory of cleaning supplies and equipment maintenance schedules.
- Coordinated team assignments based on workload and staff availability.
- Resolved client concerns regarding janitorial services promptly and professionally.
- Implemented best practices for waste disposal and recycling initiatives.
- Maintained records of all repairs and replacements performed by staff members.
- Ensured compliance with relevant laws and regulations pertaining to building codes or health and safety standards.
- Reviewed invoices from suppliers for accuracy before submitting them for payment processing.
- Established and enforced procedures and work standards, promoting team performance and safety.
- Created work schedules for janitorial staff according to established guidelines.
Education
High School Diploma -
Mountain House High School
Mountain House, Ca05-2018
Some College (No Degree) - Automotive Tech
Skyline Community College
San Bruno, CASkills
- Inspection and diagnostics
- Mechanical repairs
- Quality control processes
- Preventive maintenance techniques
- Client relationship management
- Vehicle inspection
- Team collaboration
- Problem solving
- Effective communication
- Attention to detail
- Safety compliance
- Computer troubleshooting
- Tech-Savvy
- Time management
Languages
Spanish
Full Professional
Affiliations
car detailing
Timeline
maintenance
Costco
03.2023 - 03.2025
Technician
specialized auto
2025 - Current
Janitorial Maintenance Supervisor
jul janitorial service
2020 - 2023
High School Diploma -
Mountain House High School
Some College (No Degree) - Automotive Tech
Skyline Community College