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High Voltage (HV) Test Engineer - Transfomers

The High Voltage Test Engineer supports Transformer Services operations by performing high voltage testing activities at customer sites and supporting technical field operations. Based in Earth City, Missouri, this role is responsible for operating mobile high voltage test equipment, conducting electrical tests, evaluating test results, and supporting transformer service activities. The position involves identifying sources of partial discharge, developing corrective action plans, analyzing electrical test and oil DGA data, maintaining test systems, and preparing technical reports. Working closely with customers, field crews, and engineering teams, you will help ensure the accurate assessment and testing of transformer equipment that supports reliable power system operation.

How You’ll Make an Impact

Set up and operate a mobile high voltage test trailer system.

Perform applied voltage, induced voltage, partial discharge localization, and temperature rise testing.

Investigate potential sources of partial discharge and develop corrective action plans.

Analyze electrical test data and oil DGA results.

Calibrate testing equipment.

Maintain the electrical and electronic components of the mobile test system.

Prepare technical test reports and test plans in support of proposal activities.

Provide technical support to field crews and communicate with customers.

Responsible to ensure compliance with applicable external and internal regulations, procedures, and guidelines.

Your Background

Candidate must already have work authorization that would permit them to work for Hitachi Energy in the United States.

Bachelor’s degree in engineering or related field with five or more years of experience, or a combination of studies and ten years or more of transformer experience.

Experience performing transformer testing and supporting field service operations.

Knowledge of IEEE, IEC, and NEMA industry standards.

Experience using Microsoft Office 365 and preparing technical reports.

Hands-on experience performing low voltage testing such as winding resistance, turns ratio, excitation, and power factor is preferred.

Willingness to travel. If based Earth City, MO travel expectations are 40%-50%, If based remote, travel expectations between 50%-60%. More About Us

This role offers the opportunity to work directly with engineering and field service teams while gaining exposure to transformer testing and service activities across customer sites.

Work on innovative energy technologies.

Collaborate with experienced professionals.

Access learning and development opportunities.

Participate in health and retirement benefits.

Benefit from paid leave and flexibility programs.

Background Screening and Security Checks

As part of the hiring process, Hitachi Energy conducts pre-employment background checks that may include verification of employment history, education, criminal records, and other relevant information, in accordance with applicable laws.

For certain roles, particularly those involving access to sensitive information, financial responsibilities, client data, regulated environments, or security-sensitive functions, additional or more comprehensive background or security screenings may be required. These may include, but are not limited to, enhanced criminal history checks, credit history reviews (where legally permissible), sanctions screening, or other due diligence measures aligned with the responsibilities of the position.

The scope and depth of any background or security review will be determined based on the nature of the role and business necessity and will always be conducted in compliance with applicable federal, state, and local laws. Candidates will be notified and, where required, asked to provide consent prior to the initiation of any such checks.

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Pay Disclosure (California Applicants Only):

The total base pay range for the High Voltage Test Engineer position is $105,800 - $158,600. This pay scale reflects the amount the company reasonably expects to offer for this role in California, in accordance with California Labor Code §432.3.

Location Earth City, Missouri, United States of America

Job type Full time

Work arrangement On-Site

Experience Experienced

Job function Engineering & Science

Contract Regular

Publication date 2026-09-08

Reference number R0141033

About Hitachi Energy

We are a global leader in electrification, powering the electricity era to meet the energy demands of today, and the next 25 years. As the energy arm of Hitachi Group, over three billion people depend on our pioneering, mission-critical technologies to power their daily lives.

With over a century of innovation, we are addressing the most urgent energy challenge of our time: driving the evolution of the world’s energy system to ensure abundant, secure, affordable, and sustainable power for today’s generation and the next.

With an unparalleled installed base in over 140 countries, we are the grid ecosystem partner across the utility, industry, data center, and transportation sectors. Headquartered in Switzerland, we employ over 56,000 people in 60 countries and generate revenues of around $20 billion USD.

Hitachi Energy is an Equal Employment Opportunity (EEO) employer committed to encouraging inclusion in the workplace.

All qualified applicants will receive consideration for employment without regard to race, creed, color, ancestry, religion, sex, national origin, citizenship status, age, sexual orientation, gender identity, disability, marital status, family medical leave status, protected veteran status, or any other legally protected characteristic.

As an Equal Employment Opportunity Employer, applicants may request to review the Affiantive Action Plan of a particular facility between the hours of 9:00 A.M. – 5:00 P.M. EST Monday through Friday by contacting an HR Representative at 888.504.2007. Protected veterans and qualified individuals with a disability may request a reasonable accommodation if you are unable or limited in your ability to use or access Hitachi Energy’s career site as a result of your disability. You may request reasonable accommodations by calling an HR Representative at 888.504.2007. Resumes and applications will not be accepted through this method.

For more information regarding your EEO rights as an applicant, please visit this website .