Senior Electrical Engineer, Houston, TX [Hybrid]

Location

Start

Immediate

Permanent / Full time

Travel Requirements

About Submer

What Impact You Will Have

Key Responsibilities

• Own the electrical design of the high power cooling rack architecture, including AC/DC distribution, busbar systems, grounding, bonding, and protection schemes from row-level feed to rack-level power entry.
• Define and specify rack busbar systems (e.g., 48 V/400 V/800V DC or low-voltage AC), including current ratings, clearances/creepage, short-circuit withstand, thermal limits, and insulation requirements.
• Work closely with the rack supplier to integrate busbars, PDUs, power shelves, and cable routing within the rack while meeting mechanical, thermal, and serviceability constraints.
• Develop and review one-line and three-line diagrams, schematics, harnessing, and connection diagrams for the rack and its interfaces to facility power and CDUs/heat exchangers.
• Collaborate with mechanical and thermal teams to ensure electrical layouts are compatible with 1MW cooling design, including coolant manifolds, CDUs, and cable/busbar proximity to high-heat components.
• Drive compliance with relevant codes and standards (e.g., NEC/NFPA 70, UL/IEC, IEEE, OCP/OCP-ORV3 as applicable) for busbar systems, overcurrent protection, touch safety, and labeling.
• Define and validate protection and selectivity strategy (breakers, fuses, relays) for the rack, including fault scenarios, arc-flash implications, and coordination with upstream distribution.
• Specify and qualify electrical components (busbars, insulators, lugs, connectors, PDUs, contactors, relays, sensors, monitoring devices) for high-current, high-availability operation.
• Lead DFMEA/FMEA, design reviews, and risk assessments for electrical and busbar designs, including failure modes such as loose connections, hot spots, arcing, and coolant leak interaction.
• Create and maintain design documentation: specifications, interface control documents (ICDs), test plans, FAT/SAT procedures, and installation and commissioning guidelines.
• Support prototype builds with the rack supplier and internal labs; perform and witness electrical testing (hi-pot, insulation resistance, ground-bond, load tests, temperature rise, continuity).
• Support factory and field issue resolution through root-cause analysis, corrective actions, and design updates related to busbar and power distribution performance.
• Provide technical input to sourcing and supplier selection for busbar and rack vendors; evaluate DFM/DFx aspects and cost/complexity trade-offs.

Required Qualifications

• Bachelor’s degree in Electrical Engineering or related discipline.
• 7+ years of experience in electrical power systems or high-current distribution, with at least 3–5 years in data center, HPC, industrial power, or rack-level power integration.
• Strong understanding of low-voltage power distribution (AC and/or DC), busbar design, fault currents, and protection coordination.
• Demonstrated experience working with external hardware suppliers (rack, PDU, or switchgear vendors), including reviewing designs, negotiating interfaces, and driving design changes.
• Proficiency in creating and interpreting one-line diagrams, schematics, wiring diagrams, and layout drawings using ECAD/MCAD tools.
• Familiarity with relevant electrical codes and safety standards (e.g., NEC, UL/IEC, IEEE), and practical experience implementing them in products.
• Experience with lab testing of power systems (hi-pot, ground-bond, load testing, temperature rise, etc.) and safe work practices around high-energy systems.

Preferred Qualifications

• Master’s degree in Electrical Engineering or related field.
• Experience with data center rack architectures (EIA-310, OCP/ORV3), high-density GPU/AI racks, and integration of liquid cooling components (CDUs, manifolds, cold plates).
• Background in designing or integrating busbar trunking systems, tap-off units, or high-current DC distribution in data centers or industrial plants.
• Knowledge of thermal impacts on conductors/busbars and coordination with cooling design (air or liquid).
• Familiarity with reliability and quality processes (DFMEA/PFMEA, design validation plans, HALT/HASS concepts).
• Professional Engineer (PE) license is a plus.

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