David Unga
Hayward,CA
Summary
Skilled individual successful at working various shifts and willing to go above and beyond required tasks to support team needs. Superior work ethic, physical fitness and dependability. With a proven track record at Moanas Concrete, I excel in concrete finishing and team training, demonstrating adaptability and a strong work ethic. My expertise spans from precise machine operation to effective troubleshooting, ensuring project success and efficiency improvements by over 30%. I thrive in dynamic environments, consistently achieving high-quality standards.
Overview
7
7
years of professional experience
1
1
Certification
Work History
Concrete Finisher
Moanas Concrete
San Jose , California
07.2024 - 11.2024
- Mixed, poured and spread concrete using a variety of tools including trowels, floats and screeds.
- Operated power vibrators to compact concrete into place.
- Measured and cut reinforcing steel bars in order to reinforce the structure.
- Leveled and smoothed freshly placed concrete with a straight edge or float.
- Finished surfaces by hand-troweling or machine-troweling for a smooth finish.
- Assisted in setting up formwork prior to pouring concrete.
Roofing Laborer
Family Business
Silicon Valley, CA
02.2024 - 07.2024
- Loaded roofing materials onto the truck and unloaded them at the job site.
- Assisted in preparing and laying down felt paper, shingles, and other roofing material to construct roofs.
- Installed flashing around chimneys, vents, and skylights according to specifications.
- Sealed seams with asphalt-saturated felt strips or cement mastic for protection against moisture.
- Inspected all completed projects for conformance to standards of quality before leaving a job site.
- Operated power tools such as drills and saws safely according to manufacturer's instructions.
- Used ladders properly when accessing rooftops for repairs or installations.
- Performed minor maintenance tasks on tools used in roofing operations such as cleaning, lubricating, and tightening components.
Machine Operator
Coast Aluminum
Hayward, CA
07.2023 - 01.2024
- Set up and operate machine tools to produce precision parts and instruments.
- Check products for accuracy using measuring instruments such as calipers, micrometers, gauges.
- Troubleshoot malfunctions in equipment or processes.
- Perform periodic maintenance on machines such as cleaning and lubrication.
- Read blueprints and job orders to determine product specifications and tooling instructions.
- Inspect finished workpieces to ensure conformance with specifications.
- Maintain records of completed work and production data including volume produced and time required for each task.
- Load raw materials into machines according to specified measurements.
- Unload finished products from machines onto conveyors or other transport systems.
- Observe machine operations to detect any problems or defects in the finished product.
- Replace worn tools, sharpen cutting tools, adjust machinery components.
Hangar technician
Aerotek
Mountain View, CA
10.2021 - 01.2022
- Stretching and tensioning skins for blimp exteriors
- Installed skins onto ship after being stretched and proof loaded
- Testing all components and ensuring quality of each skin.
- Build and modify MOD trust for skin installation
- Performed complex mechanical alignments and equipment calibration to meet quality standards.
- Observed equipment operation to diagnose and troubleshoot reported issues.
- Mentored junior technicians in maintenance, repair, and reporting duties.
- Performed troubleshooting and repair of equipment in accordance with manufacturer specifications.
- Tested and calibrated instruments to ensure accuracy and reliability of data.
- Maintained records of repairs, calibrations, and tests performed on equipment.
Assembly Line Worker
Minghua
Fremont, CA
02.2021 - 09.2021
- Constructing Front and back bumpers for Tesla
- Wiring the lighting and sensors that are integral to each bumper
- Testing all connections and ensuring quality of each bumper
- Ship completed product to the Tesla plant
- Used established assembly instructions to complete jobs quickly, accurately, and with zero errors.
- Assisted quality assurance by inspecting items and removing defective parts.
- Completed durable assemblies and subassemblies with hand and power tools.
- Documented production data and output to enable tracking history and maintain accurate records.
- Operated various machines used in production processes.
Construction Cleaner
Aerotek
Fremont, CA
12.2020 - 02.2021
- Learning the trades of construction
- Following specific instructions and completing tasks as directed
- Collected and disposed off all trash and debris, in a proper manner
- Vacuumed and polished all floors and wiped windows and furniture
- Operated cleaning equipments and utilized cleaning materials, efficiently
- Maintained high quality standards of work and complied with all applicable safety regulations.
- Developed safe and efficient workflows for construction projects.
ROOFING ASSISTANT
FAMILY BUSINESS
West Bay
06.2018 - 09.2018
- Inspected roofs and identified deficiencies for repair cost estimation, and to determine the best repair procedures.
- Conducted regular inspections and troubleshot building roofing systems for commercial and residential customers.
- Performed job duties at low, medium, and advanced heights on a regular basis while observing safety protocols to avoid the possibility of accidents and falls.
- Expanded knowledge of roofing materials, techniques, and cost effectiveness.
- Installed asphalt shingles, tile, and metal roofing systems to manage exterior construction projects of residential, commercial, and industrial buildings.
- Performed patching and resealing of roofs to provide maintenance, repairs, and protection.
- Assisted in the removal of old roofing materials and debris to prepare for the application of new roofing.
- Assisted roofers in the installation of shingles and other materials on roofs.
- Maintained a clean and safe work environment by removing debris.
- Inspected existing roof systems for damage or needed repairs.
MMA Teachers Assistant
MINDSET MARTIAL ARTS & FITNESS
Hayward, CA
03.2018 - 06.2018
- Co-taught children (ages 5-10) and adults mixed martial arts and boxing, including grappling, kicking, and punching techniques (part-time while finishing high school).
- Cleaned and organized the bathrooms, mats, and general building space
- Co-led warm-up exercises
- Supported student learning objectives through personalized and small-group assistance.
- Coached new students by breaking down techniques into simple moves.
- Taught both core principles and fighting techniques to students of all levels.
- Instructed on proper breathing techniques, stances, and forms.
- Assisted with sparring and contact exercises to pair students of similar rank, size, and age.
- Promoted a positive and inclusive environment by demonstrating discipline and respect to support students.
- Organized and maintained filing systems for documents and records.
- Assisted in the preparation of reports, presentations and correspondence.
- Ensured office equipment was operational, stocked with supplies and maintained in a clean condition.
Mechanics Assistant
CHAVITA’S CUSTOM CAR ACCESSORIES
San Leandro, CA
01.2018 - 02.2018
- Coordinated, ready access to tools and parts needed for repair and maintenance activities.
- Monitored inventory and reported parts and supply needs for prompt reordering.
- Performed oil changes, tire rotations, and basic vehicle maintenance in alignment with customer requests.
- Promoted shop safety by cleaning work areas and removing hazardous materials.
- Conducted routine oil changes, tire rotations, fluid replacements, and bulb changes.
- Tested vehicles after repairs to verify performance, safety, and functionality.
- Utilized diagnostic tools to identify mechanical problems and develop prompt solutions.
- Inspected vehicles for mechanical issues and reported any discrepancies to the mechanic.
- Performed basic maintenance tasks such as changing oil, checking fluids, and replacing air filters.
- Assisted in diagnosing problems using computerized diagnostic equipment.
Education
Business Administration
Merritt College
Oakland, CA08-2020
High school diploma -
Butler Academy
San Leandro, CA08.2019
No Degree - Business Administration (AST), Business
Cuesta College
San Luis Obispo, CASkills
- Positive attitude
- Adaptable to new environments
- Strong work ethic
- Active Learner and Teacher
- Guard card certification
- Organizational skills
- Communication Skills
- Automobile maintenance skills
- Time Management Skills
- Assembly and production
- Team training
- Troubleshooting
- Planning and coordination
- Concrete finishing
- OSHA protocols
- Power saws
- Hand tool operation
- Power Tool Operation
- Forklift Operation
- Concrete pouring
- Rebar installation
- Defect Correction
Certification
- Forklift Certification
Languages
Tonga
Professional
Timeline
Concrete Finisher
Moanas Concrete
07.2024 - 11.2024
Roofing Laborer
Family Business
02.2024 - 07.2024
Machine Operator
Coast Aluminum
07.2023 - 01.2024
Hangar technician
Aerotek
10.2021 - 01.2022
Assembly Line Worker
Minghua
02.2021 - 09.2021
Construction Cleaner
Aerotek
12.2020 - 02.2021
ROOFING ASSISTANT
FAMILY BUSINESS
06.2018 - 09.2018
MMA Teachers Assistant
MINDSET MARTIAL ARTS & FITNESS
03.2018 - 06.2018
Mechanics Assistant
CHAVITA’S CUSTOM CAR ACCESSORIES
01.2018 - 02.2018
Business Administration
Merritt College
High school diploma -
Butler Academy
No Degree - Business Administration (AST), Business
Cuesta College