DC ELECTRICAL DESIGN ENGINEER

About RHAELM RHAELM is the sovereign AI cloud built to accelerate secure AI deployment at scale, combining power and infrastructure pipelines with global capability and local, in-country operations. Headquartered in London, with deployments across Europe and APAC, we deliver ring-fenced compute, networking, and storage infrastructure alongside a sovereign platform and flexible Bare Metal, Kubernetes, and AI-as-a-Service models. Focused on regulated and mission-critical sectors including Government, Healthcare, and Financial Services, we give organisations sovereign control over their AI infrastructure, platform, and data.

This Role This role is based in Tokyo, Japan, leading electrical design across RHAELM's Japan data centre programme.

As DC Electrical Design Engineer, you will lead the electrical design of RHAELM's data centre infrastructure, from HV/LV distribution and switchgear through to schematic and layout drawings.

You will work closely with mechanical, structural, and ICT design teams to ensure every design meets company standards, client specifications, and the regulatory requirements of mission-critical environments.

Key Responsibilities

• Lead and contribute to the electrical design of HV/LV switchgear and related systems from concept through to completion
• Develop schematic designs, wiring diagrams, and layout drawings using CAD tools (e.g. AutoCAD, EPLAN, Revit MEP)
• Ensure all designs meet company standards, client specifications, and regulatory requirements
• Perform fault and load calculations, and select and size electrical components and equipment
• Coordinate with mechanical, structural, and ICT design teams to ensure seamless integration
• Prepare and submit project documentation, including as-built drawings, test certificates, and O&M manuals
• Support constructability reviews, site visits, and commissioning to ensure installation matches design intent
• Manage multiple design packages concurrently, maintaining quality and programme adherence

Experience

• Proven electrical design experience, ideally within data centre or critical power environments
• Experience managing design packages from concept through to delivery
• Experience handling technical queries, RFQs, and client-facing engineering activities
• Strong knowledge of relevant standards (BS 7671, IEC, UL, or equivalent)
• Familiarity with Tier III/IV design requirements advantageous
• Experience operating within Japan's construction, engineering, or regulatory market context advantageous

Skills

• Strong knowledge of HV/LV switchgear systems and electrical design principles
• Proficiency in AutoCAD, EPLAN, or equivalent electrical CAD software
• Experience producing technical drawings, calculations, and specifications
• Clear communication with clients, contractors, and cross-discipline teams
• Strong attention to detail and compliance focus

Qualifications

• Degree in Electrical Engineering or a related discipline
• Professional Engineer status or working towards chartership advantageous
• Relevant CAD software certifications a plus
• Based in Tokyo, Japan; business-level English required, Japanese language skills advantageous