Cristian Fonseca
Stockton
Summary
Dynamic Process Technician with extensive experience at Tesla, excelling in process improvement and cross-functional communication. Proven track record in optimizing production efficiency and troubleshooting equipment issues. Skilled in hands-on repair and problem-solving, contributing to a significant increase in quality standards and operational success. 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.
Overview
7
7
years of professional experience
Work History
Process Technician II
Tesla
Fremont
04.2025 - Current
- Collaborated with engineering staff to develop new processes or modify existing ones as needed.
- Optimized production processes by analyzing statistical data from SPC charts and making necessary adjustments.
- Updated standard operating procedures (SOPs) for process operations.
- Diagnosed defects in Model S/X battery packs during production.
- Implemented process improvement plans to reduce cycle time, improve efficiency, and increase quality.
Preventative Maintenance Crew Member
Global Finishing Solutions
06.2024 - 01.2025
- Used problem-solving skills to alleviate issues efficiently with minimal supervision.
- Followed work orders and specifications for machine and equipment replacement, repair, or maintenance.
- Maintained paint booths by replacing all filters ( pre, intake and exhaust) , replacing lights bulbs or ballasts as needed, power washing walls and floor grates, and re-coating booth walls with latex based white paint and doing mechanical checks for voltage and amperage.
- Traveling all over California and parts of Northern Nevada to service booths for several companies on contract. (Crash champions, Carmax, Carvana, Caliber collision and Penske)
- Conducted regular inspections of equipment to promptly identify issues that could cause machinery malfunctions.
Production Technician
Blue Triton Brands/Arrowhead
03.2024 - 05.2024
- Inspected equipment and systems to identify issues, immediately reporting problems to repair technicians.
- Calibrated machines to maintain required productivity levels and adherence to quality standards.
- Promptly documented and reported all defective equipment and hazardous conditions.
- Lubricated and cleaned parts to perform routine maintenance on production equipment.
- Performed setup of production equipment to establish optimal performance.
- Tested selected products at specified stages in production process for performance characteristics or adherence to specifications.
- Worked on assembly line for 3 and 5 gallon bottles; decapping, sniff testing, inspecting, washing and refilling bottles for commercial accounts all over the Northern California region.
Team Leader
Star Nut
10.2023 - 01.2024
- Managed a team of 10 employees to ensure daily production targets were met
- Responsible for training new hires and ensuring their safety and success
- Created daily report for Manager regarding total product sent out, total production coming in, Attendance of team members, any workplace accidents, and also settling disputes when they come up.
Equipment Maintenance Technician
Tesla
03.2023 - 09.2023
- Troubleshot and repaired electromechanical and pneumatic systems, using electrical drawings
- Performed basic preventive maintenance and repairs on production equipment such as motors, conveyors, mechanical components or electrical wiring and electrical components for production equipment
- Performed preventive or predictive maintenance of conveyance equipment, using appropriate job plans, procedures and manuals
- Assisted with basic electronics and Programmable Logic Controls troubleshooting
- Utilized variety of tools and test equipment to troubleshoot and diagnose equipment malfunctions
- Replaced worn or broken parts on machines and equipment
- Detected and repaired machinery faults using electrical and manual testing methods
- Reported issues to manager so effective resolutions could be put into place
- Rewired and replaced faulty electrical components in equipment.
Process Technician
Tesla
11.2021 - 03.2023
- Complied with safety rules and standards to maximize efficiencies while reducing accidents
- Provided technical support to all projects and provided research for all developmental teams
- Monitored all objectives and communicated with various teams regarding performance
- Administered processes, resolved issues and recommended improvements for all structure methods
- Performed troubleshooting to identify and resolve problems with battery modules
- Updated production line with Manufacturing Instructions and Quality Alert Notices
- Reworked modules that were offloaded from line to reintroduce in future
- Collaborated with teams for trials involving NPI and Process team validations
- Personally reworked over 3000 modules since starting.
Production Associate
Tesla
08.2021 - 11.2021
- Part of S/X Module Line launch team, playing my role to help create new modules from individual cells all the way to complete modules that can be put into a battery packs for the General Assembly line in Fremont
- Constantly engaging with the different types of engineers and maintenance personnel that support our line to soon meet the daily target of 100 units per shift
- Supported current production needs by moving items between equipment, conveyors and staging areas
- Delivered troubleshooting assistance to Engineers and Maintenance Technicians to bring machines back to full functionality
- Adhered to all quality control standards by thoroughly evaluating all printed components
- Worked with development team to define and implement management change requests to enhance product functionality
- Investigated reports of defective, damaged or malfunctioning parts, assemblies, equipment and systems to identify problems and resolutions
- Monitored machinery in operation to identify concerns and make corrections or report complex problems
- Interacted with internal partners to track development progress and address non-conforming issues to avoid negative impacts on completion timelines
- Conducted quality inspections of finished products and made minor repairs to meet project expectations
- Demonstrated proper use of equipment to newly hired employees to avoid workplace injuries
- Organized work to meet demanding production goals
- Maintained machinery to prevent overloads and avoid malfunctions.
End of Line Technician
Tesla
06.2021 - 08.2021
- Examined Model 3/Y's for defects or issues, reported problems quickly and maintained high levels of accuracy
- Participated in continuous improvement by generating suggestions, engaging in problem-solving activities to support teamwork
- Repairing as many vehicles each day to ensure management was happy with progress towards End of Quarter guidance numbers.
Production Associate
Tesla
12.2019 - 06.2021
- Positive minded with root cause analysis mindset towards any problem
- Supported current production needs by moving items between equipment, conveyors and staging areas
- Safely operated hand and power tools, including torque guns and spray guns to complete repetitive tasks such as installing front controller modules and paint correction
- Demonstrated proper use of equipment to newly hired employees to avoid workplace injuries
- Part of team that pushed 7,000 cars every week during ramp up in production.
Production Associate
Tesla
10.2018 - 08.2019
- Worked in General Assembly 4 tent during Model 3 ramp up in production
- Had great relationships with management (leads, supervisor, and associate manager), as well as Production Control team, 12v repair team, and some engineers that had complex parts and/or processes within specified area
- Helped launch Model 3 for both China and Europe with training we received from Pilot Team
- Significant amount of great feedback from past management for both attendance and performance
- Helped improved offline quality from 60% up to 85% through QIS procedures suggested by team members.
Maintenance Crew Member
California Concentrate Company
01.2018 - 03.2018
- Wine concentrate company assignment through staffing agency to be Maintenance
- Dig trenches anywhere from 100ft to 1000 yards
- Laid down PVC pip in trenches to help drain out certain ponds on property
- Laid down metal piping as well for electrical purposes to installing timers once done with project
- Used industrial strength adhesives for pipes and industrial paint to give all overhead pipes distinct color based on their use
- Used threading machine to mate two pieces of stainless steel tubing together
- Used critical thinking to break down problems, evaluate solutions and make decisions.
Education
Bachelor of Science - Supply Chain And Operations Management
Western Governors University
Salt Lake City, UT12-2026
Industrial Maintenance Certification - Industrial Maintenance
San Joaquin Valley College
Modesto, CA12-2024
High school or equivalent - General Education
Franklin High School
Stockton, CA05.2013
Skills
- Extensive experience in Spanish communication
- Hands-on repair experience
- Problem-solving proficiency
- Maintaining components
- Maintenance and troubleshooting of equipment
- Repair and maintenance of light fixtures
- Process improvement
- Cross-functional communication
Timeline
Process Technician II
Tesla
04.2025 - Current
Preventative Maintenance Crew Member
Global Finishing Solutions
06.2024 - 01.2025
Production Technician
Blue Triton Brands/Arrowhead
03.2024 - 05.2024
Team Leader
Star Nut
10.2023 - 01.2024
Equipment Maintenance Technician
Tesla
03.2023 - 09.2023
Process Technician
Tesla
11.2021 - 03.2023
Production Associate
Tesla
08.2021 - 11.2021
End of Line Technician
Tesla
06.2021 - 08.2021
Production Associate
Tesla
12.2019 - 06.2021
Production Associate
Tesla
10.2018 - 08.2019
Maintenance Crew Member
California Concentrate Company
01.2018 - 03.2018
Bachelor of Science - Supply Chain And Operations Management
Western Governors University
Industrial Maintenance Certification - Industrial Maintenance
San Joaquin Valley College
High school or equivalent - General Education
Franklin High School
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