Service Engineer

Ecolab • Naperville, IL

21h

About The Position

Service Engineer Liquid Cooling Systems – In‑Row Liquid‑to‑Liquid CDUs Role Overview: The Service Engineer is the highest field escalation‑level technical resource supporting OEM in‑row, liquid‑to‑liquid Coolant Distribution Units (CDUs). This role provides deep technical expertise across mechanical systems, electrical power distribution, and control platforms (PLC/HMI/BMS integration). In addition to advanced troubleshooting and commissioning support, the Service Engineer serves as a technical authority, mentor, and trainer, enabling internal service teams and delivering customer‑facing training during deployments, handoffs, and lifecycle engagements. This role is critical to ensuring system uptime, customer confidence, and scalable service excellence. What’s in it For You: The opportunity to take on some of the world’s most meaningful challenges, helping customers achieve clean water, safe food, and healthy environments The ability to make an impact with a company that is passionate about your career development Paid training held in the field and at Nalco Water Headquarters in Naperville, IL Enjoy a flexible, independent work environment Receive a non-decaled company vehicle for business and personal use Comprehensive benefits package starting day 1 of employment – medical, dental, vision, matching 401(k), company paid pension, stock purchase plan, tuition reimbursement and more!

Requirements

• Associate degree (A.S.) or equivalent from a two‑year college or technical school; or seven to ten years related experience and/or training; or equivalent combination of education and experience.
• 3 years of mechanical and electrical field service equipment experience
• Preferred location is U.S.; Open to candidates living anywhere in the U.S. close to a major airport
• Travel up to 75%

Nice To Haves

• Data center commissioning experience
• AI/HPC liquid cooling exposure
• OEM mission‑critical service background
• Familiarity with RCA/FMEA methodologies
• Bachelor’s degree in Mechanical, Electrical, or Controls Engineering (or equivalent experience)
• 7+ years field service, commissioning, or systems engineering experience
• 3+ years supporting liquid cooling systems in mission‑critical environments

Responsibilities

• Act as final technical escalation point for in‑row liquid‑to‑liquid CDU issues not resolved by other field technician resources
• Lead troubleshooting of complex system‑level issues involving: Pumps, valves, heat exchangers, sensors, and piping Power distribution, VFDs, motor protection, and grounding PLC logic, HMI behavior, alarm handling, and controls interlocks
• Perform root cause analysis (RCA) for repeat or high‑impact failures and define corrective/preventive actions
• Support 24x7 escalation coverage as part of the senior on‑call rotation
• Lead or support service engineer commissioning activities, including: Pre‑functional inspections and I/O checkout Control sequences verification and fail‑safe validation Flow balancing, pressure validation, and heat load simulations
• Support field modifications, retrofits, and design clarifications in coordination with Engineering
• Serve as technical authority during critical customer events (first power, load ramp, incident response)
• Support and troubleshoot: PLC platforms (e.g., Rockwell, Siemens, Schneider) HMIs, firmware updates, and configuration management BMS, EPMS, and DCIM integrations (BACnet, Modbus, SNMP)
• Assist in defining alarm philosophy, setpoints, and service‑safe control behaviors
• Develop and deliver internal training for L1/L2 service engineers, including: CDU fundamentals and system architecture Troubleshooting workflows and escalation criteria Safety, lock‑out/tag‑out (LOTO), and service best practices
• Deliver customer‑facing training, including: Operations & maintenance (O&M) training Commissioning handoff and system familiarization Advanced troubleshooting workshops (where applicable)
• Contribute to training materials such as: Service manuals, troubleshooting matrices, and quick‑reference guides Slide decks, hands‑on lab content, and field playbooks
• Provide field feedback to Engineering, Product Management, and Quality teams
• Contribute to: Service procedures and preventative maintenance standards Commissioning checklists and acceptance criteria Failure trend analysis and reliability improvements
• Mentor junior engineers and help shape technical service standards

Benefits

• medical
• dental
• vision
• matching 401(k)
• company paid pension
• stock purchase plan
• tuition reimbursement
• life insurance
• accident insurance
• critical illness insurance
• hospital indemnity insurance
• auto insurance
• home insurance
• pet insurance
• identity theft protection
• short-term and long-term disability
• retirement health care benefits
• short-term incentives
• vacation (12 days)
• holidays
• parental leave
• employee stock purchase plans (Full-Time Associates)
• discount on day care services and caregiver services
• adoption assistance
• group legal services
• employee assistance program
• employee discount program
• education assistance program
• on-Site childcare and fitness facilities may be available at select Ecolab locations

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: Associate degree
• Number of Employees: 5,001-10,000 employees