Senior Electrical Engineer, Houston, TX [Hybrid]

Senior Electrical Engineer Job Description

Location: Houston, TX [Hybrid]

Start : Immediate


Type of Role : Permanent / Full time

Level of Experience : Senior level 7+ years of experience

Travel Requirements : up to 10%

About Submer

Submer enables organizations scaling AI to overcome the limits of traditional datacenters across power, compute density and efficiency.

We design and deliver scalable, high-density AI datacenter infrastructure built around industry-leading liquid cooling, supporting everything from early AI deployments to full-scale production environments.

Acting as a full-stack delivery partner, Submer provides advisory, design, build and IT integration through a single point of accountability, working with a deep ecosystem of technology specialists. This end-to-end approach accelerates time-to-AI while reducing operational cost, complexity and environmental impact.

The result is AI infrastructure that performs today, scales predictably and avoids the redesigns and inefficiencies slowing the market down.

What impact you will have

We are seeking an Electrical Engineer with strong experience in server-level power distribution and data center electrical systems. This hybrid role bridges IT hardware and rack infrastructure - covering everything from server to rack power design. The ideal candidate will bring a systems-level perspective to innovate, design, and deliver next-generation data center solutions in partnership with both OEMs and hyperscalers.

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.

What we offer

Attractive compensation package reflecting your expertise and experience.

Medical Insurance Plan.

401k Employee volunteer contribution Plan.

A great work environment characterized by friendliness, international diversity, flexibility, and a hybrid-friendly approach.

You ll be part of a fast-growing scale-up with a mission to make a positive impact, offering an exciting career evolution.

Our Inclusive Responsibility

Submer is committed to creating a diverse and inclusive environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other protected category under applicable law.