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Test Engineer

OSI Systems, Inc.
Hawthorne, CA Full Time
POSTED ON 7/8/2026
AVAILABLE BEFORE 6/26/2027
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  • Hawthorne, California
  • 36922
  • Full-time
  • Pay may range from $35.00 to $38.00 hourly

Job Description

Overview

OSI Systems companies have a long history of developing innovative solutions to bring a better quality of life to the world. With more than 30 years of combined experience in the field of optoelectronics our OSI Optoelectronics (OSIO) division is a diversified manufacturer of standard and custom photodiodes and optical sensors for used in aerospace, defense, commercial and medical applications.

We are one of the largest global manufacturers of optoelectronic devices, delivering engineering design support and manufacturing capabilities that include products for use in the defense, aerospace, medical, and industrial markets, among others. We utilize our world-class manufacturing facilities in the U.S., India and Malaysia to continue to put forth excellent engineering solutions aligned with efficient manufacturing to meet high-volume production requirements.

OSI Optoelectronics is seeking a Test Engineer to join the team. This individual will be responsible for developing and implementing wafer probe and final test solutions for bipolar transistor, MOSFET and diode semiconductors. They willl design, develop, and troubleshoot test fixtures to execute MIL-STD-750 and MIL-STD-883 Test Methods. In addition, they will perform analysis of lot data to determine Delta parameters and Three Sigma calculations.

Responsibilities
  • Performs DC and AC bench measurements of semiconductors using various equipment like Lorlin or TESEC semiconductor testers, Spectrum analyzer, Oscilloscope and Pulse generator.
  • Documentation of test methodology, operating instructions, qualification protocols, and development of test procedure documents to support standardized testing and training.
  • Perform data analysis from lot measurements to evaluate trends, establish baseline performance, calculate delta parameters and three sigma limits, and identify abnormal variation affecting yield, quality, or reliability.
  • Design and develop test hardware (e.g., interface boards, sockets, fixtures) and software for DC and AC measurements (e.g., switching time, hfe, leakage).
  • Perform and debug test programs, tester hardware, and bench setups for accurate measurements.
  • Selection and qualification of vendors for parts and materials to be used in test hardware.
  • Work closely with Wafer Fab, Assembly, and Test teams to find solutions to production issues including identifying root cases and implementing corrective actions.
  • Support failure analysis and investigation of failed parts and materials.
  • Uphold the company’s core values of Integrity, Innovation, Accountability, and Teamwork.
  • Demonstrate behavior consistent with the company’s Code of Ethics and Conduct.
  • It is the responsibility of every employee to report to their manager or a member of senior management any quality problems or defects in order for corrective action to be implemented and to avoid recurrence of the problem.
  • Duties may be modified or assigned at any time to meet the needs of the business.

Qualifications
  • Bachelor’s degree in Electronics/Electrical engineering or related field required. Master’s degree is highly desired.
  • 1 years’ experience in testing semiconductors in a production setting in accordance with space, military, or government specifications required.
  • Must have strong organizational, communication, and problem-solving skills with the ability to manage multiple priorities in a fast-paced manufacturing environment.
  • Must have knowledge of physics of semiconductors, test principles and test parameters definition as they apply to small signal bipolar transistors, Schottky diodes, rectifiers, MOSFET’s, and optocouplers.
  • Knowledge of ATE, TESEC ATE systems a plus.
  • Knowledge of curve tracers, pulse and waveform generators, various power supplies and miscellaneous measurement equipment required. Knowledge of high frequency test techniques and equipment (up to 5 GHz) preferred.
  • Must have proficiency in the set-up, calibration and performance of various dynamic and high frequency parameter testing as it applies to above-listed device types: switching times, safe operating area, noise measurements, etc.
  • Familiarity with MIL-PRF-19500, MIL-PRF-38535, MIL-PRF-38534, AEC-Q documents, and MIL-STD-750/883 test methods required.
  • Strong troubleshooting and root cause analysis skills involving test systems, product failures, and production-related electrical issues desired.
  • Must be a team player.

Pay may range from $35.00 to $38.00 hourly
The pay range above represents annual base salary only. Final compensation will be determined based on factors such as your job level, geographic location, date of hire, experience, job-related knowledge and skills, and education in conjunction with market and business considerations.
Base salary is one component of your total rewards package. You may be eligible for long-term incentives, potential discretionary bonuses, and the ability to purchase company stock at a discounted rate through the Employee Stock Purchase Program (ESPP). OSI also offers comprehensive benefits including various options for health plans, access to 401(k) retirement plan, health savings account, disability insurance, life insurance, AD&D insurance, leave of absence programs and an array of voluntary benefits. In addition, paid time off is offered to be used for vacation, holidays, bereavement, and jury duty. Full-Time salaried employees are entitled to flexible time-off.


NOTICE TO THIRD PARTY AGENCIES


OSI Systems, Inc. and its subsidiaries (collectively “OSI”) does not accept unsolicited resumes from recruiters or employment agencies. If any person or entity, including a recruiter or agency, submits any information, including any resume or information regarding any potential candidate, without a signed agreement in place with OSI, OSI explicitly reserves the right to use such information, and pursue and/or hire such candidates, without any financial obligation to the person, recruiter or agency. Any unsolicited information or resumes, including those submitted directly to hiring managers, are considered and deemed to be the property of OSI.


Equal Opportunity Employer - Disability and Veterans


Know Your Rights


Poster Link:
https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf

OSI Systems, Inc. has three operating divisions: (a) Security, providing security and inspection systems, turnkey security screening solutions and related services; (b) Healthcare, providing patient monitoring, diagnostic cardiology and anesthesia systems; and (c) Optoelectronics and Manufacturing, providing specialized electronic components and electronic manufacturing services for original equipment manufacturers with applications in the defense, aerospace, medical and industrial markets, among others.

Salary : $35 - $38

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