R&D Senior Electrical Engineer

Location:

Sofia, Sofia, Bulgaria

Job ID:

R0123417

Date Posted:

2026-09-23

Company Name:

HITACHI ENERGY BULGARIA EOOD

Profession (Job Category):

Engineering & Science

Job Schedule: 

Full time

Remote:

No

Job Description:

The opportunity

Join Hitachi Energy and help shape the future of intelligent power systems by leading the development of advanced electronic, control, and monitoring solutions for On-Load Tap Changers (OLTCs) and Distribution Transformer (DT) products. As a R&D Senior Electrical Engineer, you will drive innovation, define system architectures, and collaborate with external development partners to deliver high-quality, reliable, and secure solutions. Working across multidisciplinary teams, you will play a key role in integrating digital technologies, embedded systems, motor drives, and communication solutions into next-generation products. You will contribute to technology roadmaps, product strategy, and innovation initiatives while ensuring compliance with customer requirements and industry standards. This is an exciting opportunity to influence the future of smart, connected power equipment and make a lasting impact on the energy transition.

• Act as the internal subject matter expert for electronic systems, motor drive technologies, monitoring equipment, and control solutions used in On-Load Tap Changers (OLTCs) and Distribution Transformer (DT) products.
• Provide technical leadership for outsourced development projects related to motor drives, electronic control units, sensors, communication interfaces, monitoring systems, and embedded software.
• Define technical requirements, specifications, architectures, and acceptance criteria for external development partners.
• Ensure compliance with applicable standards, customer requirements, cybersecurity requirements, and Hitachi Energy development processes.
• Participate in concept studies, technology roadmaps, and strategic product development initiatives related to digitalization, monitoring, diagnostics, and intelligent control systems.
• Lead technical risk assessments, FMEA activities, design reviews, and validation programmer for new electronic products and technologies.
• Support verification and validation activities, including laboratory testing, field testing, certification, and troubleshooting.
• Monitor technology trends in power electronics, industrial drives, embedded systems, condition monitoring, communication protocols, and industrial automation.
• Mentor engineers and facilitate knowledge transfer to strengthen internal competence in electronics and control systems.
• Contribute to intellectual property development, technology strategy, and innovation initiatives.

Your background

• Bachelor’s or Master’s degree in Electrical Engineering, Electronics Engineering, Mechatronics, Control Systems Engineering, Embedded Systems, or a related discipline.
• Proven experience in the development, integration, or support of electronic systems, motor drives, control systems, monitoring equipment, or industrial automation solutions. Experience working with electronic hardware, embedded software, sensors, communication interfaces, and control technologies in industrial or power applications.
• Demonstrated experience managing or technically leading external suppliers, engineering partners, or outsourced development projects. Experience supporting new product development, technology development, or product enhancement projects.
• Technical Knowledge: Demonstrated knowledge of electronic systems, embedded controllers, motor drive technologies, sensors, monitoring devices, and intelligent control systems. Understanding of electronic hardware development, embedded software development, system architecture, and product integration. Experience defining technical requirements, specifications, system architectures, and acceptance criteria. Knowledge of verification and validation processes, including laboratory testing, field testing, troubleshooting, and certification activities. Understanding of communication protocols, industrial automation technologies, and condition monitoring solutions. Familiarity with cybersecurity principles and requirements applicable to connected industrial products. Knowledge of product development methodologies, systems engineering principles, and lifecycle management processes.
• Product Development & Risk Management: Experience conducting technical risk assessments, FMEA activities, design reviews, and technical evaluations. Ability to assess and approve electronic hardware, embedded software, and system-level design solutions. Experience supporting product qualification, validation, and compliance activities. Strong troubleshooting and root-cause analysis skills for complex system issues. Ability to ensure compliance with technical standards, customer requirements, and quality processes.
• Collaboration & Stakeholder Management: Proven ability to collaborate effectively with cross-functional teams including mechanical, electrical, manufacturing, quality, service, procurement, sales, and product management functions. Strong communication and presentation skills with the ability to influence technical decisions and align stakeholders.
• Innovation & Continuous Improvement: Interest in emerging technologies related to power electronics, motor drives, embedded systems, industrial communication, diagnostics, monitoring, and digitalization. Experience contributing to technology roadmaps, innovation initiatives, or strategic product development activities. Ability to identify opportunities for product improvements, performance enhancements, and technology adoption. Experience contributing to intellectual property development, patents, or technical innovation initiatives is an advantage.
• Preferred Qualifications: Experience with On-Load Tap Changers (OLTCs), Distribution Transformers (DTs), transformer accessories, or power transmission and distribution equipment. Knowledge of condition monitoring, diagnostics, remote communication, and smart grid technologies. Familiarity with industrial communication protocols such as Modbus, IEC 61850, CAN, Ethernet/IP, or similar technologies. Experience with power electronics, variable speed drives, motor control systems, and industrial control architectures. Previous experience in the power, energy, industrial automation, or electrical equipment industries.

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.

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.