Senior Mechanical Engineer – Data Centre (Japan)

Responsibilities

Mechanical Engineering & Design

• Lead the mechanical design of data centre facilities, including cooling systems (precision air conditioning, CRAC/CRAH, in-row cooling, chilled water systems, adiabatic/evaporative cooling), HVAC, and building services.
• Develop and review cooling load calculations, psychrometric analyses, equipment sizing, pipe and duct routing, and P&ID diagrams.
• Design and specify cooling infrastructure to meet Uptime Institute Tier Standards, client availability requirements, PUE targets, and Japanese regulatory compliance.
• Evaluate and recommend cooling strategies appropriate for Japan's climate, seismic conditions, and energy regulations.
• Oversee BIM/CAD deliverables and ensure multidisciplinary coordination between mechanical, electrical, structural, and architectural designs.

Japanese Regulatory Compliance (Know-how in Japan)

• Ensure all mechanical designs comply with the Building Standards Act, Fire Service Act, and the Energy Conservation Act.
• Design fire suppression systems (gas suppression and sprinkler systems) in compliance with Japanese fire codes and obtain necessary approvals from local fire departments.
• Ensure plumbing and drainage designs meet local water supply and sewage ordinances.
• Navigate seismic design requirements under the Building Standards Act and ensure mechanical equipment and pipework meet Japan's strict anti-seismic standards.
• Liaise with local authorities, building certifiers, and utility providers throughout design, permitting, and commissioning.

Construction & Commissioning Support

• Provide technical support during procurement, construction, and commissioning phases, including the review of shop drawings, method statements, and RFIs.
• Witness Factory Acceptance Tests (FAT) and Site Acceptance Tests (SAT) for critical mechanical and cooling equipment.
• Prepare and review O&M documentation, commissioning records, and handover packages.

Collaboration & Leadership

• Collaborate with electrical, structural, and architectural teams across Barcelona HQ and APAC offices to produce fully coordinated design packages.
• Contribute to technical proposals, feasibility studies, and client presentations to support business development activities in Japan.
• Mentor junior engineers and help establish B Global Tech's mechanical engineering standards and delivery processes in Japan.
• This is the profile we are looking for

Education & Certification

Japanese Nationals preferred.

Bachelor's or Master's degree in Mechanical Engineering, Building Services Engineering, or a closely related discipline.

Japanese professional licensure is highly desirable, such as registered Professional Engineer (Gijutsushi) in Mechanical Engineering, First-Class Building Services Engineer, or an equivalent mechanical engineering qualification.

Uptime Institute Accredited Tier Designer (ATD) or ASHRAE-related data centre certification is an advantage.

Experience

• 8+ years of mechanical engineering experience, with at least 5 years specifically in data centre, mission-critical, or large-scale commercial M&E projects.
• Candidates must come from a consultancy background. Prior experience working within an engineering design or technical consultancy firm is a mandatory requirement.
• Demonstrated experience delivering mechanical designs in Japan, with strong working knowledge of Japanese codes, seismic requirements, and local market practices.
• Hands-on experience with large-scale chilled water cooling systems and precision cooling equipment used in Japanese data centre environments.

Technical Skills

• Proficiency in mechanical design tools, including AutoCAD, Revit MEP/BIM, HAP, or equivalent HVAC/cooling load analysis software.
• Working knowledge of Uptime Institute Tier Standards, ASHRAE TC9.9 guidelines, and Japanese Industrial Standards (JIS).
• Strong understanding of thermodynamics, fluid mechanics, and their application to data centre cooling and energy efficiency.

Language & Soft Skills

• Business-level Japanese (spoken and written) is essential for authority liaison, contractor management, and client engagement in Japan.
• Professional working proficiency in English is required for coordination with Barcelona HQ and APAC offices.
• Collaborative and solution-oriented mindset, with the ability to navigate complex multidisciplinary projects.

Our benefits

• Hybrid working arrangement – 2 days in the office, with the remaining 3 days working from home
• Company-provided laptop and accessories

Medical & Outpatient benefits

Hospitalization insurance

• Annual leave – starting from 18 days per year
• Performance-based annual bonus (based on KPIs)

Annual salary increment

Training and development opportunities to support your career growth