Mechanical Engineer

JLL; Johor; On-site; MYR 150,000 - 230,000; Full time

Job summary

JLL is seeking a Data Center Mechanical Engineer to design, implement, and optimize cooling and mechanical systems in mission-critical data centers. You will lead thermal management, perform CFD analyses, and ensure alignment with ASHRAE and IMC standards while coordinating with vendors and cross-functional teams.

The role requires 5–7 years in data center mechanical engineering, experience with CRAC/CRAH, in-row cooling, and BMS platforms.

Qualifications

• Bachelor's degree in Mechanical Engineering required.
• Minimum 5-7 years of mechanical engineering experience in data center or mission-critical facilities.

Responsibilities

• Develop mechanical drawings, equipment schedules, airflow diagrams, and piping layouts.
• Oversee operation of CRAC/CRAH, in-row cooling, rear-door heat exchangers; manage chilled water systems.
• Conduct thermal assessments, CFD analysis, and containment strategies like hot/cold aisle configurations.
• Configure and maintain Building Management Systems (BMS) for monitoring and control.
• Perform preventive maintenance on cooling equipment and coordinate maintenance windows.
• Analyze energy efficiency, implement optimization like VSDs and economizers.
• Lead mechanical engineering aspects of data center projects through commissioning.
• Ensure compliance with IMC, ASHRAE standards, and local codes.
• Oversee water treatment, refrigerant management, and Legionella protocols.
• Manage vendor/contractor relationships and technology evaluations.

Skills

Mechanical design

CFD modelling

AutoCAD

Revit MEP

6SigmaRoom

Tileflow

FloVENT

BMS platforms

Education

Bachelor's degree in Mechanical Engineering

Master's degree in Mechanical Engineering (preferred)

PE license (preferred)

Tools

AutoCAD

Revit MEP

6SigmaRoom

Tileflow

FloVENT

Tridium Niagara

Johnson Controls Metasys

Schneider EcoStruxure

Job description

Position Overview

The Data Center Mechanical Engineer is responsible for implementing, maintaining, and optimizing mechanical systems and critical cooling infrastructure within mission-critical data center environments. This role ensures reliable thermal management, optimal environmental conditions, and maximum uptime while supporting continuous IT operations and maintaining compliance with industry standards.

Data Center Mechanical Engineer

The Data Center Mechanical Engineer is responsible for implementing, maintaining, and optimizing mechanical systems and critical cooling infrastructure within mission-critical data center environments. This role ensures reliable thermal management, optimal environmental conditions, and maximum uptime while supporting continuous IT operations and maintaining compliance with industry standards.

Key Responsibilities

Critical Cooling Systems. Develop mechanical drawings, equipment schedules, airflow diagrams, and piping layouts. Identify and report SPOFs within the design of cooling architectures (N, N+1, 2N) to meet Uptime Institute Tier II, III, or IV certification requirements. Calculate cooling loads, CFD modeling, and thermal capacity planning for current and future IT infrastructure density requirements.

HVAC and Precision Cooling Management Oversee operation of computer room air conditioning (CRAC) units, computer room air handlers (CRAH), in-row cooling systems, and rear-door heat exchangers. Manage chilled water systems including chillers, pumps, cooling towers, heat exchangers, and distribution piping. Implement and optimize free cooling, economizer systems, and adiabatic cooling technologies. Monitor and maintain environmental conditions including temperature, humidity, and airflow to ensure optimal IT equipment performance.

Thermal Management and Optimization Conduct thermal assessments using temperature mapping, hot spot identification, and airflow visualization techniques. Implement containment strategies including hot aisle/cold aisle configuration, blanking panels, and physical separation systems. Optimize air distribution through computational fluid dynamics (CFD) analysis and real-time monitoring. Address thermal challenges in high-density computing environments including rack-level cooling solutions.

Building Management Systems (BMS) Configure, program, and maintain BMS platforms for monitoring and control of mechanical systems. Develop control sequences, setpoints, and alarm parameters for automated system operation. Integrate DCIM platforms with mechanical systems for comprehensive infrastructure visibility. Analyze trending data to identify performance issues and optimization opportunities.

Mechanical Infrastructure Operations Perform routine inspections, testing, and preventive maintenance on cooling equipment including chillers, pumps, cooling towers, and air handling systems. Troubleshoot mechanical failures, cooling deficiencies, and equipment malfunctions with minimal impact to IT operations. Coordinate maintenance windows and implement change management procedures for mechanical system modifications. Monitor system performance metrics including cooling efficiency, equipment runtime, and energy consumption.

Energy Efficiency and Sustainability Analyze cooling system efficiency and identify opportunities to reduce energy consumption and improve PUE (Power Usage Effectiveness). Implement energy optimization strategies including variable speed drives, free cooling utilization, and equipment staging optimization. Develop and track key performance indicators (KPIs) for mechanical system efficiency and environmental impact. Support sustainability initiatives including water conservation, refrigerant management, and carbon footprint reduction.

Capacity Planning and Load Analysis Analyze cooling capacity utilization and forecast future requirements based on IT deployment trends. Develop capacity models accounting for equipment heat loads, airflow requirements, and infrastructure constraints. Identify stranded capacity and cooling optimization opportunities to maximize infrastructure utilization. Plan mechanical infrastructure upgrades to support increasing power densities and evolving cooling technologies.

Project Engineering and Implementation Lead mechanical engineering aspects of data center projects from conceptual design through commissioning and turnover. Coordinate with MEP contractors, equipment vendors, and cross-functional teams to ensure successful project delivery. Review shop drawings, submittals, equipment specifications, and O&M manuals for compliance with design intent. Conduct site inspections during construction phases and verify installation quality, code compliance, and performance testing.

Compliance and Documentation Ensure compliance with mechanical codes including IMC, ASHRAE standards (particularly ASHRAE TC 9.9 for data centers), and local building codes. Maintain accurate as-built drawings, equipment documentation, maintenance logs, and system performance records. Develop and update standard operating procedures (SOPs) for mechanical systems operation, maintenance, and emergency response. Coordinate with regulatory authorities for inspections, permits, environmental compliance, and refrigerant management reporting.

Water Treatment and Fluid Management Oversee water treatment programs for chilled water systems, cooling towers, and humidification systems. Monitor water chemistry parameters including pH, conductivity, and chemical treatment levels. Manage backflow prevention, water filtration, and makeup water systems. Coordinate with water treatment vendors and ensure compliance with Legionella prevention protocols.

Vendor and Contractor Management Manage relationships with HVAC equipment manufacturers, controls vendors, and maintenance service providers. Oversee service level agreements and ensure vendor performance meets operational uptime requirements. Coordinate with OEM representatives for equipment warranty claims, software updates, and technical support escalations. Evaluate emerging cooling technologies and equipment for potential implementation in data center infrastructure.

Change Management Requirements

Change Request Handling: Datacenter engineers must initiate, document, and track all infrastructure changes through the formal change management process. This includes hardware installations, network modifications, configuration updates, and system upgrades. Each change requires comprehensive documentation detailing the scope, impact assessment, implementation plan, rollback procedures, and testing validation.

Change Advisory Board (CAB) Participation: Engineers are expected to participate in CAB meetings, presenting technical details of proposed changes and addressing questions from stakeholders. They must provide risk assessments and demonstrate alignment with business objectives and maintenance windows.

Implementation and Documentation: Execute approved changes according to scheduled maintenance windows, following documented procedures precisely. Maintain detailed implementation logs, capture before-and-after configurations, and update asset management systems and configuration management databases (CMDB) to reflect current state.

Post-Implementation Review: Complete post-change validation testing to confirm successful implementation and document outcomes. Report any deviations from expected results and ensure proper closure of change tickets with lessons learned documentation.

Incident Management Requirements

Incident Detection and Response: Respond promptly to datacenter incidents including hardware failures, environmental alerts, power disruptions, cooling system issues, and network outages. Acknowledge incidents within defined SLA timeframes and begin initial triage immediately.

Incident Classification and Prioritization: Assess incident severity based on business impact and urgency. Properly categorize incidents (hardware, network, environmental, security) and elevate critical issues according to established escalation matrices. Priority 1 incidents require immediate attention regardless of time of day.

Root Cause Analysis: Conduct thorough investigation to identify root causes rather than addressing symptoms only. Document findings, contributing factors, and failure patterns to prevent recurrence. Collaborate with vendors and internal teams as needed for complex issues.

Communication and Reporting: Maintain regular communication with stakeholders during incident resolution. Provide status updates at defined intervals, manage expectations regarding resolution timeframes, and ensure proper notification when incidents are resolved. Complete detailed incident reports documenting timeline, actions taken, root cause, and preventive measures.

Knowledge Management: Contribute to the knowledge base by documenting incident resolutions, creating troubleshooting guides, and sharing lessons learned. This builds organizational capability and reduces resolution time for future similar incidents.

Required Qualifications

Education Minimum Bachelor's degree in Mechanical Engineering required. Master's degree in Mechanical Engineering, HVAC systems, or related field preferred for senior positions.

Experience Minimum 5-7 years of mechanical engineering experience with at least 3 years specifically in data center or mission-critical facilities. Demonstrated experience with precision cooling systems, chilled water infrastructure, and thermal management in high-density computing environments. Proven track record managing mechanical systems in 24/7 operational environments with stringent uptime requirements. Experience with data center design standards including Uptime Institute Tier classifications, ASHRAE thermal guidelines, and TIA-942.

Technical Expertise Deep knowledge of data center cooling technologies including CRAC/CRAH units, in-row cooling, liquid cooling, and rear-door heat exchangers. Proficiency with mechanical design software including AutoCAD, Revit MEP, and computational fluid dynamics (CFD) tools such as 6SigmaRoom, Tileflow, or FloVENT. Strong understanding of psychrometrics, heat transfer principles, airflow dynamics, and thermodynamic cycles. Experience with BMS platforms such as Tridium Niagara, Johnson Controls Metasys, Schneider Electric EcoStruxure, or similar. Knowledge of chilled water system design, pumping configurations, and heat rejection equipment sizing and operation.

Licensure and Certifications Professional Engineer (PE) license strongly preferred. Certified Data Centre Professional (CDCP) or Certified Data Centre Specialist (CDCS) highly desirable. ASHRAE certifications such as BEMP (Building Energy Modeling Professional) or HFDP (High-Performance Design Professional) beneficial. Additional certifications such as CEM (Certified Energy Manager), LEED AP, or CFD analysis credentials advantageous.

Preferred Qualifications

Experience with hyperscale, colocation, or enterprise data center environments supporting diverse client requirements. Knowledge of liquid cooling technologies including direct-to-chip, immersion cooling, and hybrid cooling architectures. Familiarity with modular data center solutions and prefabricated mechanical infrastructure. Experience with commissioning processes including functional performance testing and Cx agent coordination. Project management certification (PMP) or equivalent. Background in energy modeling

Core Competencies

Exceptional problem-solving abilities with capacity to diagnose complex thermal and mechanical issues rapidly in mission-critical environments. Strong analytical skills for system performance analysis, capacity modeling, and optimization initiatives. Excellent communication capabilities for technical documentation, client presentations, and cross-functional collaboration with electrical, IT, and facilities teams. Ability to make informed decisions quickly during cooling emergencies while maintaining safety and operational integrity. Leadership qualities for guiding technical teams, mentoring junior engineers, and driving continuous improvement initiatives. Data-driven approach to infrastructure management with focus on metrics, trending, and predictive analytics.

Working Conditions

Position requires on-site presence at data center facility with occasional remote work capability for analysis and documentation tasks. Must be available for 24/7 on-call rotation to respond to critical cooling incidents, equipment failures, or environmental alarms. Flexibility to work during planned maintenance windows including nights, weekends, and holidays. May require travel to multiple data center locations, vendor facilities, or industry conferences. Work environment includes data center white space, mechanical equipment rooms, rooftop installations, and outdoor cooling tower yards.

Physical Requirements

Ability to navigate data center environments including raised floor areas, mechanical rooms, ceiling spaces, and rooftop equipment platforms. Capability to wear appropriate PPE including hard hats, safety glasses, hearing protection, and arc flash protection when working near electrical systems. Climbing ladders and working at heights for rooftop equipment inspections and maintenance activities. Occasional lifting of equipment, tools, or materials up to 50 pounds. Ability to work in varying environmental conditions including hot mechanical rooms, cold outdoor areas, and temperature-controlled data halls.

Safety Requirements

Must maintain current knowledge of mechanical system safety standards, confined space entry protocols, and OSHA regulations. Adherence to lockout/tagout (LOTO) procedures, hot work permits, and permit-to-work systems when coordinating with contractors. Participation in regular safety training including fall protection, ladder safety, and refrigerant handling. Understanding of electrical safety requirements when working on equipment with electrical components. Commitment to fostering a culture of safety within operations teams and contractor workforce.