Giovana Stefan Email & Phone Number

Piscataway, New Jersey, United States

Analytical and life sciences instrumentation

Sugar Land, Texas, United States

• Product and equipment design / Subject Matter Expert in clean room processes
• Led the transfer and validation of the clean room assembly equipment and processes for vacuum tubes in the new manufacturing location, and delivered in time for the pre-production tests.
• Completed V&V test reports and reviewed validation results in technical meetings with stakeholders.
• Designed new clean room and equipment layout, improving with 10% the manufacturing flow time.
• Analyzed new environment impact to vacuum tubes assembly line (air quality, ground born vibration) and integrated the results with major impact in decision to re-construct building ventilation systems.
• Optimized transferred technology in new location, by upgrading tooling: electrodes for spot-welding, crimping punch for cold forming, coil assembly for RF induction heating, reducing with 25% PM time.

Princeton, New Jersey, United States

• Research and Engineering / New product design
• Completed packaging design of extreme high voltage electronics packaging, for a 300+kVdc radiation generator, resulting in 3-fold increase in the operation life-time compared to the earlier version.
• Determined root cause of cathode electron emission inconsistency in accelerator tube, by using mechanical inspection, leading to cathodes design change and 40% increase in manufacturing yield.
• Achieved project milestone for ultra-compact, extreme environment X-ray generator with reliable mechanical design of the accelerator tube, tig-welded in the area of highest mechanical stress.

Princeton, New Jersey, United States

• Production equipment design / Product design / Automation
• Improved production throughput yields by 20% after designing multiple electro-mechanical test devices for PMTs performance and temperature life tests, and developing test devices maintenance plans throughout their.
• Identified key design changes to improve the PMT ruggedness, redesigned an internal sub-assembly with implementing new processes (chemical etching, annealing, forming) and supporting equipment, eliminating PMT failures.
• Managed internal machine shop and two machinists, performing more than 50% prototyping work.
• Led assembly automation project for PMT stack (6-axis arm robots, 200+ pick and place operations per output assembly). Shared lessons learned about product fit to automation, process efficiency (loading time.

Bayonne, New Jersey, USA

• Developed electro-mechanical product designs for slip rings assemblies (electrical rotary connectors) used in commercial, industrial and military applications. Completed custom slip ring assembly exposed to harsh.

Fair Lawn, New Jersey, USA

• Designed fire simulation equipment and systems, per customer requirements. Developed layout drawings for mock-up Aircraft, a realistic replica used in fire fighters training, to customer approval, and successful.

Pompton Plains, New Jersey, USA

• Completed custom mechanical design for Seal Strength testing equipment, used in medical device, pharmaceutical and food packaging industries to assess the seal quality and peeling force required to remove lids of.

• Aircraft design and maintenance / Helicopters and gliders – 10 Years
• Implemented advanced honeycomb and epoxy molded composite technology in the production of IAR 330 Puma Military Helicopter’s structural panels, achieving project milestone.
• Successfully outsourced local epoxy materials for composite panels and followed-up with quality assurance for helicopters regular revisions and preventive maintenance.
• Designed high-temperature molding dies for IAR 316 Helicopter rotor blade composite assembly. Supervised dies manufacturing and testing, and delivered in time for rotor blade production.
• Conducted new product development qualification tests, for composite glider Glassfluegel 309. Integrated transferred technology and jigs design and organized prototype production flow.