Power Supply Engineer

Hitachi; Ballerup; Hybrid; DKK 700,000 - 900,000; Full time

Job summary

Hitachi Rail Denmark A/S is seeking a Power Supply Engineer to design, manage interfaces, and prepare documentation for installation, testing and handover. You will provide power design calculations, protection/earthing support, and commissioning evidence for railway applications.

Key responsibilities include developing load lists and power diagrams, coordinating availability, reviewing supplier designs, and supporting site surveys and commissioning while ensuring safety and compliance across

Qualifications

• Electrical power systems experience within rail, infra, industrial, telecoms or critical power projects.
• Knowledge of LV distribution, UPS, earthing/bonding and protection coordination.
• Ability to coordinate power dependencies across multiple systems.

Responsibilities

• Develop/review load lists, power requirements, single-line diagrams and earthing interfaces.
• Coordinate power availability for equipment and energisation readiness.
• Review supplier electrical designs, calculations and installation records.
• Support site surveys, commissioning, fault investigations and as-built docs.
• Escalate deviations affecting safety, EMC, capacity or constructability.

Skills

Electrical power systems

Rail industry

Protection coordination

Earthing / Bonding

Electrical safety

Project coordination

Job description

Location:

Copenhagen, Denmark

Job ID:

R0138868

Date Posted:

2026-07-20

Company Name:

Hitachi Rail Denmark A/S

Profession (Job Category):

Engineering & Science

Job Schedule:

Full time

Remote:

No

About Us

A career at Hitachi Rail will help create a legacy. With operations in every corner of the world, our work goes to the cutting-edge of digital transformation and technology. From the multi-cultural strength of our global organisation to the sustainable and innovative ways we work to bring people together, there's something for everyone to get stuck into. And that's where you come in.

Job Description:

Power Supply Engineer

About the Role

Power Supply Engineer contributes to Hitachi’s responsibility to design, manage interfaces, and prepare the documentation needed for installation, test and placing in service approvals. Its specific contribution is to provide power design inputs, calculations, protection/earthing support, installation support and commissioning evidence.

Key Responsibilities

• Develop/review load lists, power requirements, single-line diagrams, UPS/backup arrangements, protection philosophy and earthing/bonding interfaces.
• Coordinate power availability for equipment.
• Review supplier/subcontract electrical designs, calculations, certificates, installation records and energisation readiness evidence.
• Support site surveys, inspections, commissioning, fault investigations and as-built documentation.
• Identify power-related risks including capacity, selectivity, resilience, electrical safety, maintainability and access constraints.
• Apply the Hitachi Code of Conduct in role-specific decisions, including ethical escalation, anti-bribery discipline, confidentiality, data protection, fair supplier/customer conduct and transparent records.
• Provide power design inputs, calculations, protection/earthing support, installation support and commissioning evidence.
• Discipline authority for power calculations and detailed technical decisions in delegated scope.
• Escalates deviations affecting safety, EMC, capacity or constructability.

Key Interfaces

• Engineering Manager, Solution Engineering Manager, Installation Design Manager, EMC/EMI Engineer and Work Package Leaders.
• Implementation, Construction, Site, T&C, Safety, RAM and Quality teams.
• Electrical suppliers/subcontractors and customer/infrastructure owner power-interface stakeholders.
• Test readiness.

Authority & Accountability

• Accountable for technical correctness of assigned power-supply engineering outputs.
• Authorised to challenge unsafe or undersized power arrangements and recommend design/installation corrections.
• Escalates power availability or compliance risks to Engineering Manager.

Mandate

Ensure Project systems receive safe, compliant and resilient power suitable for railway operation, testing and maintenance.

Skills & Experience

• Electrical engineering experience in rail, infrastructure, industrial, telecoms or mission-critical power systems.
• Knowledge of LV distribution, UPS, protection coordination, earthing/bonding, electrical safety and commissioning evidence.
• Ability to coordinate power dependencies across many systems.
• Resilience and resistance to stress during energisation readiness, site faults and commissioning pressure.
• Practical electrical safety mindset and documentation rigour.
• More than 5 years in electrical/power systems engineering on infrastructure or industrial Projects.

Working in Hitachi:

Our employees are our most important asset and we provide an environment that encourages a healthy work/life balance and we offer a flexible hybrid work environment based on Working from home and office presence (40/60). Your manager will interact with you on a regular basis, ensuring you a career path that suits your needs and ambitions. Beside the traditional benefits like pension, 6 weeks of holidays, canteen etc., we also are proud of offering some good and very professional skilled colleagues.

At Hitachi Rail, there is a place for everyone.

We welcome and value differences in background, age, gender, sexuality, family status, disability, race, nationality, ethnicity, religion, and world view.

It is our commitment to create an inclusive environment - we are proud to be an equal opportunity employer.