Sr. Manufacturing Test Engineer – Liquid Cooling

At Jabil (NYSE: JBL), we are proud to be a trusted partner for the world's top brands, offering comprehensive engineering, supply chain, and manufacturing solutions. With 60 years of experience across industries and a vast network of over 100 sites worldwide, Jabil combines global reach with local expertise to deliver both scalable and customized solutions. Our commitment extends beyond business success as we strive to build sustainable processes that minimize environmental impact and foster vibrant and diverse communities around the globe.

Sr. Manufacturing Test Engineer - Liquid Cooling

Location: Florence, KY (On-site)

Company: Jabil

Jabil is seeking a Senior Manufacturing Test Engineer (Liquid Cooling) with hands-on experience testing and troubleshooting enterprise server, storage, networking, GPU, or AI compute platforms in a manufacturing or production environment. This is working directly with liquid cooling technology.

Ideal candidates have experience developing or sustaining factory test solutions, supporting NPI builds, resolving production test failures, and working with Linux-based systems, automation scripts, and hardware diagnostics.

This is not a software QA, application testing, or web-services testing role.

How You Will Make an Impact

As a Sr. Test Engineer (Liquid Cooling), you will play a critical role in the development, integration, and continuous improvement of next-generation compute platforms, including AI/ML, GPGPU, server, networking, and storage systems.

You will lead test engineering activities in a high-volume manufacturing environment, driving product quality, system performance, and operational excellence through advanced troubleshooting, automation, and team leadership.

Key Responsibilities

Technical Leadership & Engineering

• Design, develop, and maintain test procedures, test systems, hardware, and software for advanced compute platforms.
• Lead failure analysis and root cause investigations across hardware and software domains.
• Troubleshoot complex server, networking, storage, and accelerator-based systems.
• Support AI/ML, GPU, and high-performance compute platforms through integration and production.
• Interpret test logs, JSON outputs, and system data to identify trends and drive improvements.
• Develop and deploy automation using Python and Bash scripting.
• Analyze manufacturing and system data using Excel and Power BI.
• Support NPI (New Product Introduction) readiness and production ramp.

Networking & Systems

• Configure and troubleshoot networking systems (switches, routers, LAN/WAN, Layer 3).
• Support optical networking technologies (transceivers, fiber optics).
• Utilize and train others on Linux command-line tools and scripting.

Liquid Cooling & Thermal Systems (Advanced Compute Focus)

• Apply heat transfer, thermodynamics, and fluid mechanics principles to liquid cooling systems.
• Work with components such as pumps, cold plates, chillers, reservoirs, tubing, and coolants (e.g., PG25).
• Use instrumentation including thermocouples, flow meters, and pressure sensors.
• Perform leak detection, material compatibility analysis, and coolant safety procedures.
• Support immersion and direct-to-chip cooling technologies.
• Work with OCP standards, BMS/SCADA systems, and specialized equipment (particle analyzers, pressure testers, fill/flush/purge systems).

Leadership & Management Responsibilities

Team Leadership

• Lead, mentor, and develop Test Engineers and technicians.
• Recruit, interview, and retain top talent.
• Build training programs and develop team capabilities.

Performance Management

• Set measurable goals aligned with operational and business objectives.
• Provide coaching, feedback, and performance evaluations.
• Drive continuous improvement in productivity, quality, and engagement.

Business & Strategy

• Align test engineering strategy with site and organizational goals.
• Lead workcell test engineering teams and customer programs.
• Present technical findings and communicate effectively with stakeholders and customers.

Operational Excellence

• Apply LEAN manufacturing principles and quality metrics (Yield, GRR, DPPM).
• Identify cost reduction opportunities through process optimization and automation.
• Monitor test performance and implement improvements across programs.

Minimum Qualifications

Education

• Bachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, or related field (preferred). OR Master's degree & 2 years of experience.

Experience

• 5-10+ years in test engineering, failure analysis, or hardware validation in manufacturing environments
• Experience with:
  • Server, networking, and storage systems
  • Linux environments and scripting (Python, Bash)
  • High-volume production and NPI support
  • Presenting technical data and leading cross-functional discussions

Examples of relevant experience:

• Manufacturing Test Engineer
• Hardware Validation Engineer (factory environment)
• Production Test Engineer
• Server Test Engineer
• Rack Integration Test Engineer

We are looking for:

• Manufacturing test development for enterprise servers, storage, networking, or AI/GPU platforms
• Linux administration and command-line troubleshooting
• Python and/or Bash scripting
• Hardware failure analysis
• NPI and production ramp support
• Factory test automation
• Server hardware diagnostics
• High-volume manufacturing environments
• Advanced Linux command-line expertise
• Strong programming/scripting skills (Python, Bash)
• Knowledge of JSON, system logs, and automation frameworks
• Deep understanding of compute architecture and server platforms
• Networking knowledge (switches, routers, optical systems, IP, Layer 3)
• Strong analytical, troubleshooting, and statistical analysis skills
• Proficiency in Excel and Power BI

Physical Demands

• Frequent movement, including walking on the manufacturing floor
• Ability to lift and carry up to 50 lbs (PCs, test equipment)
• Extended time working on computer systems

Work Environment

• Combination of office and manufacturing floor work
• Modern, climate-controlled production environment
• Required PPE: safety shoes, eyewear, hearing protection, ESD vest
• Moderate noise levels in production areas

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Jabil, including its subsidiaries, is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, age, disability, genetic information, veteran status, or any other characteristic protected by law.

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