R&D Mechanical Engineer Senior
Description
Location
Sofia, Sofia, Bulgaria
Job ID
R0144119
Date Posted:
2026-09-18
Company Name
HITACHI ENERGY BULGARIA EOOD
Profession (Job Category)
Engineering & Science
Job Schedule
Full time
Remote
No
Job Description
Join Hitachi Energy and help shape the next generation of On-Load Tap Changers (OLTCs), motor drives, and transformer accessories through innovative mechanical design. As a Senior R&D Mechanical Engineer , you will lead the development of high-performance electromechanical products, transforming requirements into reliable, manufacturable, and cost-effective solutions. Working closely with cross-functional teams, you will drive product innovation, continuous improvement, and technical excellence throughout the product development lifecycle. You will play a key role in advancing technologies, solving complex engineering challenges, and ensuring the highest standards of quality and reliability. This is an exciting opportunity to make a lasting impact on critical power infrastructure while contributing to a more sustainable energy future.
How you’ll make an impact
- Act as the lead mechanical design engineer for new product development, product upgrades, and technology development projects related to On-Load Tap Changers (OLTCs), motor drives, and transformer accessories.
- Develop innovative design concepts that meet customer, functional, reliability, manufacturability, cost, and serviceability requirements.
- Drive continuous improvement initiatives for existing products focusing on reliability, performance, manufacturability, quality, cost, and sustainability.
- Lead mechanical design reviews and provide technical recommendations throughout the development lifecycle.
- Support laboratory testing, prototype evaluations, product validation, and qualification activities.
- Define test objectives , test setups, acceptance criteria, and verification plans.
- Participate in root cause analyses of field failures, production issues, and customer complaints, identifying corrective and preventive actions.
- Participate in FMEA, risk assessments, and technical reviews for new products and product modifications.
- Collaborate closely with materials, electrical, manufacturing, quality, service, and supply chain teams.
- Develop and maintain design guidelines, best practices, lessons learned, and engineering standards.
Your background
- Bachelor's or Master's degree in Mechanical Engineering or a related engineering discipline.
- Significant experience in mechanical design and product development within industrial equipment, power systems, electromechanical products, or related industries.
- Knowledge of design for manufacturability (DFM), design for assembly (DFA), reliability engineering, and cost optimization principles.
- Proficiency in 3D CAD modeling, engineering drawings, geometric dimensioning and tolerancing (GD&T), and product data management systems.
- Experience developing engineering documentation, specifications, test plans, design standards, and technical reports. Understanding of material selection, mechanical calculations, tolerance analysis, fatigue, wear, and failure mechanisms.
- Experience supporting prototype development, laboratory testing, product validation, qualification activities, and design verification processes. Strong analytical and problem-solving skills, including experience with root cause analysis and corrective action implementation.
- Working knowledge of risk assessment methodologies, including FMEA and product design reviews.
- Good written and spoken English .
What we offer
- 13th salary;
- Monthly food vouchers;
- Supplementary health insurance;
- Additional bonuses.
More about us
Join Hitachi Energy and work in a team that is dedicated to creating a future where innovative digital technologies allow greater access to cleaner energy!
Applications will be reviewed on an ongoing basis, so don’t delay – apply today!
Accessibility and reasonable accommodation
Qualified individuals with a disability may request a reasonable accommodation if you are unable or limited in your ability to use or access the Hitachi Energy career site as a result of your disability. You may request reasonable accommodations by completing a general inquiry form on our website. Please include your contact information and specific details about your required accommodation to support you during the job application process.
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Use of Al and automated tools in recruitment
As part of our recruitment process, Hitachi Energy uses digital and automated tools, including Al-supported solutions, to assist with activities such as application screening, job matching, and interview scheduling. These tools are designed to support our recruiters and do not replace human decision-making. Candidate data is processed in accordance with applicable data protection and employment laws as well as Hitachi's Global Data Privacy Notice.
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