Principal Engineer Mechanical

At Bulk, our mission is to build sustainable infrastructure that supports the digital society of tomorrow. As one of the leading providers of sustainable, high-performance data center solutions in the Nordics, we design and operate infrastructure that powers artificial intelligence and the digital society – efficiently, securely, and with 100% renewable energy. We are now looking to hire a Principal Engineer Mechanical to play a central role in shaping the mechanical engineering standards that set the foundation for our growing data center portfolio.

The Principal Engineer Mechanical is a high-impact role with responsibility for mechanical engineering processes across multiple large-scale data center sites. You will define standards, guide site operations, and act as a key technical authority as Bulk grows. The role offers significant influence, close collaboration with senior stakeholders, and the opportunity to build a new central engineering capability from the ground up.

What you’ll do:

As our Principal Engineer Mechanical, your key responsibilities will be:

• Lead mechanical engineering processes across Bulk’s data center portfolio (air and liquid cooling, HVAC, heat rejection, water systems, and fire systems).

• Define and own mechanical engineering standards, policies, and procedures aligned with high-density and hyperscale requirements.

• Perform site deep dives, audits, and health checks against design intent and target risk levels.

• Provide capacity reviews and technical sign-off for customer deployments, including high-density and liquid-cooled workloads.

• Lead engineering reviews and provide input to new builds.

• Develop asset strategies aligned with ISO 55000, including criticality, maintenance plans, sparing, and lifecycle planning.

• Act as senior escalation point during mechanical incidents, leading investigations and root cause analysis.

• Run fleet-wide reliability and health programs using telemetry (BMS/EMS/CMMS).

• Mentor site engineers and support capability building across the organization, including liquid cooling operations and safety.

• Qualify vendors, approve mechanical equipment specifications, and govern deviations.

• Support energy efficiency and sustainability initiatives, including PUE, WUE, and heat reuse strategies.

Who are you?

You are an experienced mechanical engineer with a strong understanding of mission-critical cooling systems and the credibility to act as an authority across a growing data center organization. You thrive in complex environments, enjoy setting standards from the ground up, and are comfortable balancing operational realities with long-term scalability.

What you bring:

• Minimum of a bachelor's degree in mechanical engineering.

• At least 10 years of experience in mission-critical facilities or data center environments.

• Strong knowledge of cooling architectures, including CRAH/CRAC, AHUs, economization, adiabatic systems, and high-density deployments.

• Experience with liquid cooling solutions such as direct-to-chip and rear-door heat exchangers.

• Familiarity with ASHRAE TC 9.9 guidance and thermal management principles.

• Experience with commissioning, performance testing, and reliability engineering (FMEA/RCFA).

• Experience with standards such as BICSI 002, EN 50600-2-3/-4, and ISO 55000.

• Proven experience supporting or leading incident response and root cause analysis.

• Strong stakeholder management skills and the ability to lead through influence.

Why join us?

• A unique opportunity to shape a newly established central engineering function.

• Influence the mechanical standards of next-generation, sustainable data centers.

• Work at the intersection of operations, design, and future-focused infrastructure.

What we offer our Bulkies:

• A dynamic, growth-oriented workplace with a strong sustainability focus.

• Comprehensive insurance and annual health check.

• Additional time off during Easter and Christmas.

• Monthly contribution to home internet costs and sustainable commuting.

• Annual wellness allowance to support an active lifestyle.

• Fully paid parental leave.

Take the next step in your career and join us as we build the future of digital infrastructure in Norway and beyond!

Next steps

We are reviewing applicants continuously, so we highly encourage you to apply as soon as possible. To apply, please upload your CV and a cover letter detailing your relevant experience and why you are the ideal candidate for this role.

We conduct background checks on all hires. We may also require you to obtain security clearance and a police certificate of conduct. Bulk aim for gender balance and a diverse workforce.  We do not discriminate against gender, race, ethnicity, religion, sex, sexual orientation, age, pregnancy and/or disability. We appreciate the time you have spent, and if the role aligns with your aspirations, we encourage you to apply!