Johnny Espinoza
Chief Ethanol
Hastings,NE
8
years of professional experience
Millwright and CNC Operator with over 14 years experience in machinery installation, maintenance and operations. Demonstrate expertise in troubleshooting, blueprint reading and welding. Ensuring precision and adherence to safety standards. Committed to enhancing machine performance through meticulous attention to detail and continuous skill development.
Work History
Fermentation Operator/unloader
- Prepare and charge fermenters with mash, nutrients, enzymes and yeast. Monitor parameters such as temperature, PH, sugar and alcohol concentration and fermentation time.
- Collect samples from fermentation and process streams. Perform routine tests to verify performance meets quality and production targets.
- Operate pumps, valves, agitators, heat exchangers and related equipment. Assist maintenance during repairs and shutdowns.
- Perform CIP procedures on fermenters and associated equipment. Maintain sanitary conditions to prevent bacterial contamination.
Repair technician
5 Months- Inspect rail cars for mechanical defects, damage and wear.
- Perform structural repairs on rail car bodies, frames and components. Removed and install mechanical parts using specialized tools.
- Perform cutting, welding, grinding and metal fabrication.
- Diagnose mechanical and pneumatic system problems. Identify causes of brake malfunctions, wheel defects and component failures.
Millwright
1 Year 8 Months- Install new machinery, dismantle and move existing equipment
- Perform routine maintenance like lubricant and part replacement.
- Troubleshoot mechanical issues, identify and correct problems and make necessary adjustments or repairs.
- Read blueprints, schematics and technical manuals to understand equipment specifications and plan installation, maintenance and repair procedures
- Stick and/or mig welding repairs, rebuilding spouts
Fabricator/ CNC Operator
3 Years 11 Months- Operate punch press, shears, benders, saws, pedestal grinders, and drill presses.
- Utilized tape measure, square, calipers, micrometers, hammers, wrenches, and punches. use of safety glasses with side shields, protective footwear, gloves, face shields, and hearing protection.
- Prepare and operate CNC machines to perform tasks such as drilling, grinding, milling etc.
- Understand specifications of the task at hand and the desired result by reading blueprints, mechanical drawings.
- Translate instructions into computer commands so the machines can perform the correct function
- Prepare and load raw materials and parts onto the machines
- Prepare a test run to check if the machines produce outputs according to specifications
- Set machines to complete full cycles to fabricate large number of parts
- Supervise the machines while they execute the tasks and make any necessary adjustments to produce a better result
- Inspect and measure finished products and compare them with requirements to determine if the process has been completed properly
- Check and maintain machinery daily to ensure functionality
Pug Mill Operator
1 Year 10 Months- Set up auger and operate series of machines to mix ingredients, extrude clay mixture, and to cut extruded column into brick and tile products: Turns valves to feed and regulate flow of ingredients into mixing machine and to create vacuum in de-airing machine.
- Install die, core, rings, and former in extrusion head, using hand-tools and measuring instruments.
- Set controls on automatic cutoff knives to cut clay column according to job order specifications.
- Examine extruded product to detect variations from specified hardness and turns valves to feed water and oil into pug mill to correct consistency of clay.
- Replace knives, reamers, and finishers in automatic finishing units.
Skills
Equipment operation
Efficient work pace
Site clearing
Workplace safety
OSHA standards
Hazardous material safety
Quality control procedures
Work Planning and Prioritization
Timeline
Repair technician
Cathcart Rail Services
03.2025 - 08.2025Read More
Millwright
Cooperative Producers Inc Hastings,NE
07.2023 - 03.2025Read More
Fabricator/ CNC Operator
Reinke Manufacturing Deshler,NE
08.2019 - 07.2023Read More
Pug Mill Operator
Endicott Clay Endicott,NE
10.2017 - 08.2019Read More
Fermentation Operator/unloader
Chief Ethanol
Read More