• Developing and designing Heat Rejection and HVAC systems specifically tailored for data centers. • Selecting appropriate air/water side cooling systems for data centers based on the specific cooling requirements. • Conducting internal CFD simulations to optimize airflow distribution and identify hotspots. • Designing HVAC systems with redundancy and fault-tolerant features to ensure continuous operation. • Performing heat load calculations for data centers to determine the cooling requirements. • Implementing energy-efficient HVAC design strategies to minimize energy consumption. • Ensuring the data center's air quality is maintained at optimal levels.

Company Description Work with Us. Change the World. At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations. There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world. We're one global team driven by our common purpose to deliver a better world. Join us. Job Description AECOM is seeking to hire a highly skilled Senior Mechanical Engineer for the Data Center and Mission Critical team for our east region. The ideal candidate for this position should be familiar with the tech sector, mission critical and data center industry, understanding the requirements of scale, speed, and consistency in data centers. This position offers the flexibility of a remote work schedule and can be based from a variety of locations in the US where AECOM has an office. Although the position is primarily remote periodic travel may be required for client meetings, key project milestones, onsite collaboration sessions, or other business‑critical activities. Travel is expected to be occasional and scheduled in advance AECOM is a leader in the global data center consulting industry with robust teams in the Americas, Europe, Africa, Asia, and Australia. In this role, you will have the opportunity to work with our teams around the world on high-profile, fast-paced data center projects for global clients. This is a hands-on, client-facing role with an opportunity for upward career mobility. Responsibilities, required experience, and qualifications are summarized below: Responsibilities: - Data Center Heat Rejection and HVAC System Design: Developing and designing Heat Rejection and HVAC systems specifically tailored for data centers, considering factors such as type of cooling requirement as air cooled or direct fluid cooled, associated cooling loads, future flexibility of the system to accommodate variable heat distribution scenarios, phased construction and operation, airflow management, humidity control, system redundancy providing concurrent maintainability, energy efficiency, and compliance with industry standards and best practices. - Cooling System Selection: Selecting appropriate air/water side cooling systems for data centers, including Fan wall units, computer room air handlers (CRAHs), chilled water systems, DX systems and CRAC units, in-row cooling, and containment solutions, based on the specific cooling requirements of the data center and the criticality of the equipment. - Computational Fluid Dynamics (CFD) Analysis: Conducting internal CFD simulations to optimize airflow distribution, transient period analysis, identify hotspots, and ensure efficient cooling throughout the data center. Conducting external CFD on individual buildings and/or campus-wide to simulate effects of different electrical and mechanical components on each other and effects on design day selection criteria capacity of each component. For both types, prepare and/or direct preparation of models and analyse the results to recommend design modifications and optimize the Heat rejection and HVAC system performance. Coordinate the required changes and resulting effects with other trades on project. - Redundancy and Fault Tolerance: Designing HVAC systems with redundancy and fault-tolerant features to ensure continuous operation of the data center in the event of equipment failure or maintenance activities. This includes the design of backup cooling systems, automatic switchover mechanisms, and monitoring systems. - Heat Load Calculation and Capacity Planning: Performing heat load calculations for data centers to determine the cooling requirements based on the IT equipment, power density, anticipated growth, and phasing of the construction and operational steps. Conducting capacity planning to ensure the HVAC system can accommodate future expansions and upgrades. Performing HVAC loads for admin and common sections of the facility. - Energy Efficiency and Sustainability: Implementing energy-efficient HVAC design strategies, such as utilizing economizers, variable speed drives, energy recovery systems, and optimizing airflow management techniques, to minimize energy consumption and support sustainability initiatives. - Air Quality and Filtration: Ensuring the data center's air quality is maintained at optimal levels by designing appropriate filtration systems and implementing air quality monitoring mechanisms. Addressing concerns related to particulate matter, humidity control, and contaminant removal to protect sensitive IT equipment. - Coordination with Electrical and Mechanical Systems: Collaborating with electrical engineers and mechanical engineers to integrate the heat rejection and HVAC system seamlessly with the electrical infrastructure, UPS systems, emergency power systems, fire suppression systems, and other critical infrastructure components. Qualifications Minimum Qualifications: - Bachelor's Degree with 8+ years of relevant experience or demonstrated equivalency of experience and or education. - Experience in data center mechanical and electrical equipment installation and operation. - P. E. registration is required. Preferred Qualifications: - A bachelor's degree in mechanical engineering, HVAC engineering, or a related field from an accredited university is typically required. Preference would be given to candidates with a master's degree or advanced coursework in HVAC systems or energy management. - Knowledge of data center TER Standard Topology as per Uptime Institute, TIA 942, ANSI/BICSI 002 - Professional certifications related to HVAC engineering, such as Certified Energy Manager (CEM), Building Energy Modeling Professional (BEMP), or Leadership in Energy and Environmental Design (LEED) accreditation, would be advantageous. Additional Information - We are interested in every qualified candidate eligible to work in the United States. Permanent residency sponsorship is available for current H1-B visa holders in the United States. - Relocation assistance may be available for candidates interested in working from our Arlington, VA office. About AECOM AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. What makes AECOM a great place to work You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community—where you have the freedom to grow in a world of opportunity. As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines. - State/Province: Virginia - Business Group: DCS - Legal Entity: AECOM Technical Services Inc - Business Line: B&P - Buildings & Places - Work Location Model: Remote - Operating Group: Americas - Primary Location: US - Arlington, VA - 3101 Wilson Blv - Compensation: USD 170000 - USD 200000 - yearly

Company Description Work with Us. Change the World. At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations. There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world. We're one global team driven by our common purpose to deliver a better world. Join us. Job Description AECOM is seeking to hire a highly skilled Senior Mechanical Engineer for the Data Center and Mission Critical team for our east region. The ideal candidate for this position should be familiar with the tech sector, mission critical and data center industry, understanding the requirements of scale, speed, and consistency in data centers. This position offers the flexibility of a remote work schedule and can be based from a variety of locations in the US where AECOM has an office. Although the position is primarily remote periodic travel may be required for client meetings, key project milestones, onsite collaboration sessions, or other business‑critical activities. Travel is expected to be occasional and scheduled in advance AECOM is a leader in the global data center consulting industry with robust teams in the Americas, Europe, Africa, Asia, and Australia. In this role, you will have the opportunity to work with our teams around the world on high-profile, fast-paced data center projects for global clients. This is a hands-on, client-facing role with an opportunity for upward career mobility. Responsibilities, required experience, and qualifications are summarized below: Responsibilities: - Data Center Heat Rejection and HVAC System Design: Developing and designing Heat Rejection and HVAC systems specifically tailored for data centers, considering factors such as type of cooling requirement as air cooled or direct fluid cooled, associated cooling loads, future flexibility of the system to accommodate variable heat distribution scenarios, phased construction and operation, airflow management, humidity control, system redundancy providing concurrent maintainability, energy efficiency, and compliance with industry standards and best practices. - Cooling System Selection: Selecting appropriate air/water side cooling systems for data centers, including Fan wall units, computer room air handlers (CRAHs), chilled water systems, DX systems and CRAC units, in-row cooling, and containment solutions, based on the specific cooling requirements of the data center and the criticality of the equipment. - Computational Fluid Dynamics (CFD) Analysis: Conducting internal CFD simulations to optimize airflow distribution, transient period analysis, identify hotspots, and ensure efficient cooling throughout the data center. Conducting external CFD on individual buildings and/or campus-wide to simulate effects of different electrical and mechanical components on each other and effects on design day selection criteria capacity of each component. For both types, prepare and/or direct preparation of models and analyse the results to recommend design modifications and optimize the Heat rejection and HVAC system performance. Coordinate the required changes and resulting effects with other trades on project. - Redundancy and Fault Tolerance: Designing HVAC systems with redundancy and fault-tolerant features to ensure continuous operation of the data center in the event of equipment failure or maintenance activities. This includes the design of backup cooling systems, automatic switchover mechanisms, and monitoring systems. - Heat Load Calculation and Capacity Planning: Performing heat load calculations for data centers to determine the cooling requirements based on the IT equipment, power density, anticipated growth, and phasing of the construction and operational steps. Conducting capacity planning to ensure the HVAC system can accommodate future expansions and upgrades. Performing HVAC loads for admin and common sections of the facility. - Energy Efficiency and Sustainability: Implementing energy-efficient HVAC design strategies, such as utilizing economizers, variable speed drives, energy recovery systems, and optimizing airflow management techniques, to minimize energy consumption and support sustainability initiatives. - Air Quality and Filtration: Ensuring the data center's air quality is maintained at optimal levels by designing appropriate filtration systems and implementing air quality monitoring mechanisms. Addressing concerns related to particulate matter, humidity control, and contaminant removal to protect sensitive IT equipment. - Coordination with Electrical and Mechanical Systems: Collaborating with electrical engineers and mechanical engineers to integrate the heat rejection and HVAC system seamlessly with the electrical infrastructure, UPS systems, emergency power systems, fire suppression systems, and other critical infrastructure components. Qualifications Minimum Qualifications: - Bachelor's Degree with 8+ years of relevant experience or demonstrated equivalency of experience and or education. - Experience in data center mechanical and electrical equipment installation and operation. - P. E. registration is required. Preferred Qualifications: - A bachelor's degree in mechanical engineering, HVAC engineering, or a related field from an accredited university is typically required. Preference would be given to candidates with a master's degree or advanced coursework in HVAC systems or energy management. - Knowledge of data center TER Standard Topology as per Uptime Institute, TIA 942, ANSI/BICSI 002 - Professional certifications related to HVAC engineering, such as Certified Energy Manager (CEM), Building Energy Modeling Professional (BEMP), or Leadership in Energy and Environmental Design (LEED) accreditation, would be advantageous. Additional Information - We are interested in every qualified candidate eligible to work in the United States. Permanent residency sponsorship is available for current H1-B visa holders in the United States. - Relocation assistance may be available for candidates interested in working from our Arlington, VA office. About AECOM AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. What makes AECOM a great place to work You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community—where you have the freedom to grow in a world of opportunity. As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines. - State/Province: Virginia - Business Group: DCS - Legal Entity: AECOM Technical Services Inc - Business Line: B&P - Buildings & Places - Work Location Model: Remote - Operating Group: Americas - Primary Location: US - Arlington, VA - 3101 Wilson Blv - Compensation: USD 170000 - USD 200000 - yearly

Mullins Mechanical is a leader in industrial and large commercial mechanical, plumbing, HVAC construction projects. Our projects are often in the industrial and manufacturing environments, such as manufacturing facilities, automotive plants, chemical plants, distribution centers, warehouses, and other large commercial facilities. We are a self-performing specialty contractor specializing in design-build applications, HVAC systems, plumbing, process piping systems, boiler and chiller systems, equipment installation and rigging, plant relocation and maintenance, and metal fabrication. We are looking for an experienced Fire Protection Foreman to join our team. Responsibilities: - Manage construction of Fire Protection Sprinkler and Suppression systems. - Manage work crews on assigned project(s) - Collaborate with Superintendent to achieve client satisfaction and project profitability - Review project documents: plans, specifications, and any other pertinent project information - Attend the hand-off meeting to discuss project scope, schedule, subcontractors, materials, and project start. - Ensure Mullins’ safety policies and procedures are enforced and maintained on a daily basis. This includes: - Enforcing site specific safety plan - Attending weekly safety toolbox talks - Submitting detailed Incident Reporting Forms to field supervision on the day the incident occurred and assist Superintendent in gathering potential claim documentation when applicable - Collaborate with the Quality Control Manager, Project Manager and Superintendent to ensure the Quality Assurance Plan is implemented throughout the duration of the project - Notify the Superintendent or Senior Superintendent of any delays or opportunities to accelerate the schedule - Request materials and equipment from the Superintendent, as necessary, to complete assigned work - Ensure tools and equipment are secured on the jobsite and that any repairs/maintenance needed is reported to the Superintendent - Maintain tools and equipment provided by Mullins to their jobsite, both owned and rented - Confirm the proper installation of all equipment on project - Use current technology (mobile apps, email, etc.) to track and distribute information on construction projects - Update, review and/or submit=all required reports/logs in a timely manner: - Ensure jobsite remains clean and orderly Qualifications: - Previous experience and proven track record as a construction Foreman for a trade Mullins self-performs, or in a similar role - Knowledge of local safety, quality, and health guidelines for construction job sites - In-depth understanding of construction operations and processes - Organizational and time-management skills - Ability to communicate professionally - Ability to lead and inspire - OSHA 10 certification Work Location: Ladson, South Carolina Salary: Compensation commensurate with experience. Join Us Mullins Mechanical ranked #243 on the 2024 ENR Top Specialty Contractors list, #48 in the Nation and #5 in the Southeast among Firms in Mechanical. We’re proud to be one of the fastest growing privately held companies in America. We’re a self-performing specialty contractor specializing in design-build applications, HVAC systems, plumbing, process piping systems, boiler and chiller systems, equipment installation and rigging, plant relocation and maintenance, fire protection, and metal fabrication. Our projects are often in industrial and heavy commercial environments such as manufacturing facilities, automotive plants, chemical plants, distribution centers, warehouses, data centers, and other large facilities.