Senior Electrical Engineer

Job Details

Our client, a global manufacturer of energy-efficient air technology and data center cooling equipment, is looking for a Senior Electrical Engineer to join their team in Morrilton, AR. The client designs and builds high-performance cooling equipment for some of the largest data center operators in the world, including Computer Room Air Handlers (CRAH), custom Air Handling Units (AHU), Fan Coil Units and Fan Coil Walls (FCU/FCW), and Coolant Distribution Units (CDU).

The Senior Electrical Engineer will own the electrical design of this equipment from concept through production release and field commissioning. This includes designing UL 508A control panels, building complete schematic packages in EPLAN Electric P8 and AutoCAD Electrical, and completing the electrical calculations behind each design. The client is building an in-house controls and electrical engineering team and moving to standard product designs, and this role is central to that effort.

This is a hands-on senior role with real design authority. The Senior Electrical Engineer will work closely with manufacturing, global engineering teams, customers, panel builders, and component vendors.

Key Responsibilities

Electrical Design

• Create complete electrical schematic packages in EPLAN Electric P8 and AutoCAD Electrical, including power distribution, motor/VFD circuits, control and safety circuits, terminal plans, panel layouts, wire/cable schedules, and interconnection diagrams.
• Design industrial control panels that meet UL 508A, including layout, component selection, spacing, wire sizing, color coding, and nameplate/marking requirements.
• Build and maintain EPLAN master data, including symbol libraries, macros, parts databases, project templates, and title blocks.
• Design power circuits for EC fan arrays, VFD-driven pumps and fans, transformers, control power supplies, UPS backup, and heater loads (120V–600V, single- and three-phase, 50/60 Hz).
• Design low-voltage control and instrumentation wiring for Siemens Climatix controllers, I/O modules, HMIs, sensors, safety relays, and BACnet/Modbus networks, working with the Controls Engineering team.
• Design hardwired safety circuits (HOA, E-stop, smoke detection, leak detection, external interlocks) using fail-safe, normally-closed design.

Engineering Calculations

• Complete Full Load Amps (FLA), Minimum Circuit Ampacity (MCA), and Maximum Overcurrent Protection (MOP) calculations per NEC and UL 60335-2-40 / UL 1995.
• Determine Short-Circuit Current Rating (SCCR) for control panels per UL 508A Supplement SB.
• Size conductors and cables and calculate ampacity derating and voltage drop per NEC Articles 310, 430, and 440.
• Select fuses and circuit breakers and complete overcurrent protection and coordination analysis.
• Size transformers and control power supplies, including inrush and load growth margin.
• Complete panel heat load calculations and design enclosure cooling, ventilation, and condensation control.
• Verify motor and VFD sizing, including harmonics and 50 Hz vs. 60 Hz settings.
• Design grounding and bonding, complete wire pull and conduit fill calculations, and provide arc-flash input when needed.

Standardization & Documentation

• Own assigned electrical standard documents; write, revise, and release them through formal review.
• Classify design elements as Fixed, Configurable, or Project-Specific and enforce this on every project.
• Convert outsourced, project-specific drawing sets into in-house EPLAN standard packages, and complete gap analyses against PRDs, BOMs, and customer specifications.
• Maintain standard BOMs and approved component libraries (Siemens, Yaskawa, Phoenix Contact, ABB, and others), including alternates and obsolescence tracking.
• Support global engineering teams with drawing standards, EPLAN workflows, and re-certification checklists for IEC/CE-built units going to US sites.

Project & Customer Support

• Review customer specifications and hyperscaler requirements, turn them into compliant designs, and document any deviations.
• Produce submittal-quality drawing packages and respond to customer and consultant review comments.
• Direct outside drafting partners and panel builders; review and approve vendor drawings, panel layouts, and as-built documents.
• Support Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT), including writing test procedures, witnessing tests, and resolving non-conformances.
• Lead root-cause analysis for field electrical issues, manufacturing deviations, and supplier quality problems.

Travel (25–30%, Domestic and International)

• Manufacturing plants (US and international) for design support, first-article inspection, and production issues.
• Panel builder and supplier sites for design reviews, quality audits, and FAT.
• Customer data center sites for SAT, commissioning, and field issue investigation.
• Customer and consultant offices for design reviews and qualification work.

Qualifications

Required

• Bachelor of Science in Electrical Engineering or a closely related field from an accredited program.
• 8+ years of electrical design experience in industrial equipment, HVAC/mechanical equipment, control panels, or mission-critical infrastructure.
• Expert-level EPLAN Electric P8 skills (project structuring, macros, article management, cross-referencing) and strong AutoCAD Electrical skills.
• Proven ownership of UL 508A panel designs, including SCCR calculations per Supplement SB. UL 508A MTR certification, or the ability to obtain it within 6 months.
• Strong knowledge of the NEC (NFPA 70), especially Articles 310, 409, 430, and 440, and the ability to complete and document all supporting calculations on your own.
• Hands-on experience with VFDs, EC motors, three-phase power distribution, control transformers, and 24V control systems.
• Experience producing complete, production-ready drawing packages and managing document revision control.
• Ability to travel 25–30%, including internationally (valid passport required).

Preferred

• Experience with data center cooling equipment (CRAH, CRAC, AHU, fan walls, CDUs) or other mission-critical HVAC products.
• Familiarity with hyperscale customer qualification programs and their electrical, EMC, and safety requirements.
• Working knowledge of BACnet/IP and Modbus TCP/RTU; exposure to Siemens Climatix or similar DDC/PLC platforms.
• Knowledge of IEC standards, CE marking, and the IECEE CB Scheme; understanding of 50/60 Hz design differences.
• Familiarity with UL 60335-2-40, UL 1995, IEC 62443 cybersecurity concepts, and IEEE color book methods.
• Professional Engineer (PE) license or progress toward one.
• Experience working with global engineering teams across time zones.

Job Benefits

• Competitive salary plus performance bonus
• Comprehensive benefits
• Career growth within a global engineering organization
• Modern engineering tools, including EPLAN Electric P8 and AutoCAD Electrical, plus EPLAN certification
• A ground-floor role helping build an in-house electrical engineering team and product standardization program
• High-visibility work on equipment used by the world’s largest data center operators, at the center of the AI infrastructure buildout

If you are an experienced electrical design engineer looking for a hands-on role with real design authority, apply today for the Senior Electrical Engineer position in Morrilton, AR.