Renata Alvarez — Manufacturing Engineer
Grand Rapids, MI
Manufacturing engineer with six years on injection molding and assembly lines for appliance and medical components. Raised OEE on a nine-press molding cell from 61% to 84% in eleven months, recovering about
.1M a year in capacity. Certified Six Sigma Green Belt who runs changeover and scrap projects from the floor.
Experience
Manufacturing Engineer, Halverton Plastics Group · November 2023 – present
Owns process engineering for a nine-press molding cell and two downstream assembly lines.
- Raised cell OEE from 61% to 84% in eleven months by rebalancing cycle times and moving mold changes off the critical path, recovering about .1M of annual capacity.
- Cut average mold changeover from 74 minutes to 26 through SMED, freeing 310 press hours a year.
- Drove scrap on a glass-filled nylon housing from 6.8% to 1.9% by correcting gate location and a 40°F melt-temperature drift.
- Qualified two backup resin suppliers through full IQ/OQ/PQ, closing a single-source exposure raised in the 2024 customer audit.
Process Engineer, Cranmore Industrial · September 2021 – October 2023
- Launched three molded parts through PPAP with no customer rejections, holding every critical characteristic above 1.67 Cpk.
- Redesigned a manual assembly station around a poka-yoke fixture, taking misbuilds from 1,100 ppm to 90 ppm.
- Reduced press hydraulic downtime 41% by converting reactive repairs to a condition-based PM schedule.
Associate Manufacturing Engineer, Stonefield Tooling · June 2020 – August 2021
- Programmed and proved out 38 CNC fixtures in Mastercam, cutting average setup time by 19 minutes per job.
- Built the first cutting-parameter database the tool room had, from 200 logged runs, extending insert life 27%.
Education
- B.S. Mechanical Engineering · Michigan Technological University · August 2016 – May 2020
Skills
- Process: Scientific injection molding, SMED, Statistical process control, Design of experiments, Poka-yoke, Line balancing
- Quality systems: PPAP, APQP, PFMEA, IQ/OQ/PQ validation, ISO 13485, Gage R&R
- Tools: SolidWorks, Mastercam, Minitab, Ignition SCADA, AutoCAD
Certifications
- Certified Six Sigma Green Belt — ASQ
- Certified Manufacturing Engineer (CMfgE) — SME
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