Note: The job is a remote job and is open to candidates in USA. Flux Resources is seeking a Principal Mechanical Operations Engineer to serve as the senior technical authority for mechanical and cooling infrastructure across a rapidly expanding portfolio of hyperscale AI data centers. This role will provide operational leadership for critical cooling systems and ensure successful transition of facilities from commissioning into steady-state operations.

Responsibilities

• Serve as the senior technical authority for operational mechanical and cooling infrastructure across the data center fleet
• Lead site assessments, operational audits, and readiness evaluations for existing and new facilities
• Assess mechanical system performance, reliability, maintainability, and operational risk
• Drive technical readiness programs and support operational teams prior to site activation
• Review engineering designs, equipment specifications, and construction deliverables from an operational perspective
• Collaborate with design, engineering, and manufacturing teams to incorporate operational lessons learned into future deployments
• Provide subject matter expertise for: Chilled water systems, Chillers, Cooling towers, CRAH and CRAC units, Pumps and hydronic systems, Coolant Distribution Units (CDUs), Direct liquid cooling systems
• Lead operational readiness reviews and approve commissioning-to-operations handovers
• Author and approve high-risk: Methods of Procedure (MOPs), Emergency Operating Procedures (EOPs), Abnormal Operating Procedures (AOPs)
• Lead root cause analysis investigations for cooling system failures, outages, and operational incidents
• Develop and maintain mechanical operating standards, maintenance strategies, and best practices
• Mentor site teams and improve technical readiness across the organization
• Support continuous improvement initiatives focused on cooling efficiency, reliability, and operational excellence

Skills

• 10+ years of experience supporting mission-critical mechanical systems in data centers, industrial facilities, healthcare, semiconductor, or similar critical environments
• Deep expertise in cooling infrastructure and thermal management systems
• Extensive experience with: Chilled water systems, Chillers, Cooling towers, CRAH and CRAC equipment, Pumps and hydronic distribution systems, Coolant Distribution Units (CDUs), Direct liquid cooling technologies
• Proven experience authoring and executing high-risk mechanical operating procedures
• Strong background leading root cause investigations for cooling-related incidents and operational events
• Experience evaluating site operational readiness and identifying opportunities for improvement
• Ability to develop technical capabilities and readiness programs for operations teams
• Strong understanding of reliability engineering, preventive maintenance, and operational risk management
• Excellent communication, leadership, and stakeholder management skills
• Ability to influence design decisions through operational expertise
• Experience supporting hyperscale or large colocation data center environments
• Experience operating facilities at hundreds of megawatts of capacity
• Expertise in direct liquid cooling systems and CDU operations
• Familiarity with ASHRAE TC 9.9 guidelines and best practices
• Experience optimizing chilled water plant performance and efficiency
• Knowledge of commissioning and operational turnover processes for mission-critical facilities
• Uptime Institute certifications or equivalent mission-critical training
• Experience supporting modular or prefabricated infrastructure deployments

Benefits

• Medical Coverage: Two United Healthcare plans (PPO and HDHP with HSA), with employer contributions toward premiums; coverage begins the 1st of the month after 60 days of employment
• Dental & Vision: United Healthcare dental with 100% preventive care coverage and vision benefits for exams, frames, lenses, or contacts
• Wellbeing Support: Employee Assistance Program (EAP) offering confidential counseling plus additional wellness and care navigation resources
• Retirement & Savings: 401(k) eligible after 30 days with automatic 6% enrollment (opt-out available), 1% annual increases up to 10%, plus HSA with up to $480 employer contribution
• Voluntary Benefits: Employee-paid accident insurance and critical illness coverage for major health events

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