Electrical Designer

ON.energy develops AI UPS and power products for large-load interconnection and grid-safe data centers. The Senior Control Panel Designer owns complete electrical drawing packages for control panels and power products, designing PLC and I/O hardware, network and wiring documentation, safety circuits, and switchgear interfaces from concept through production release.

Responsibilities

Carry complete drawing packages from concept through prototype, verification and released production revision, with ECO/ECN discipline

Design PLC and I/O hardware: I/O lists, module and rack selection, I/O allocation, 24 VDC power budgets, fusing and distribution, analog signal conditioning, shielding and grounding

Produce network interface drawings and diagrams: Ethernet and Modbus TCP topology, fiber and copper runs, managed switch port assignments, IP address schedules and panel-to-panel communications

Create wiring detail: terminal block schedules, wire numbering, cable and conduit schedules, interconnect and field wiring diagrams

Design emergency stop and safety circuits with our functional safety reviewers: dual-channel monitored wiring, safety relays, monitored contactors and reset logic

Design switchgear interfaces: breaker close/trip circuits, CT and PT wiring, 125 VDC control power, interposing relays, permissives and interlocks

Determine and document SCCR, select listed and recognized components, and size conductors, overcurrent protection and enclosures to UL 508A and NFPA 70

Generate BOMs from schematics and maintain the component database: part numbers, manufacturer and vendor data, obsolescence tracking and revision history

Set up and maintain symbol libraries, project templates and device tagging schemes so the team works from one shared standard

Preferred

Experience with both AutoCAD Electrical and EPLAN P8, or helping move a drawing standard from one platform to the other

Background in battery energy storage, UPS or power electronics products, including MV interfaces

Time working alongside a UL 508A panel shop or on an NRTL field evaluation, including working through inspector findings

Familiarity with SEL protective relays, managed industrial switches and 125 VDC control power gear

Working awareness of IEC 61439, IEC 60204-1, NFPA 79 and ANSI/IEEE C37 as they relate to panel and switchgear design

Some exposure to PLC programming or commissioning

AAS or BS in electrical engineering or electrical technology, or equivalent hands-on panel design experience

Electrical Drawing Standards Migration

Battery Energy Storage

UPS Products

Power Electronics

Medium-Voltage Interfaces

UL 508A Panel Shop Experience

NRTL Field Evaluation

Inspector Findings Resolution

SEL Protective Relays

Managed Industrial Switches

IEC 61439

IEC 60204-1

ANSI/IEEE C37

Panel Design

Switchgear Design

PLC Programming

PLC Commissioning

Electrical Engineering Education

Electrical Technology Education

Hands-On Panel Design Experience

Benefits

For US-based roles: Competitive salary + annual performance-based bonus eligibility

For US-based roles: Medical, dental, and vision insurance

For US-based roles: 401(k) with company match

For US-based roles: Paid time off and company holidays

For Mexico-based roles: Competitive salary + annual performance bonus eligibility

For Mexico-based roles: Christmas Bonus (Aguinaldo): 30 days

For Mexico-based roles: Major medical expenses and life insurance

For Mexico-based roles: Paid time off and holidays (per local policy)

For all roles: Professional development and growth opportunities

For all roles: Opportunity to grow with a mission-driven team shaping the future of clean energy

Company

Hyperscale power systems for AI data centers and critical infrastructure

Miami, Florida, USA

https://www.on.energy/

Founded in 2016

51-200 employees

Qualifications

7+ years of control panel design experience, with a track record of carrying complete drawing packages from concept through released production revision

Strong working knowledge of AutoCAD Electrical or EPLAN P8, including setting up symbol libraries, project templates and device tagging schemes for a shared team standard

PLC and I/O hardware design: I/O lists, module and rack selection, I/O allocation, 24 VDC power budgeting, fusing and distribution, analog signal conditioning, shielding and grounding

Network interface drawings and diagrams: Ethernet and Modbus TCP topology, fiber and copper runs, managed switch and port assignments, IP address schedules and panel-to-panel communications

Wiring detail: terminal block schedules, wire numbering conventions, cable and conduit schedules, interconnect and field wiring diagrams

BOM generation from schematics and component database upkeep: part numbering, manufacturer and vendor data, obsolescence tracking and revision history that procurement and manufacturing can rely on

Applied NEC (NFPA 70) knowledge for panel, feeder and overcurrent protection decisions, and comfort walking a reviewer through conductor sizing and enclosure choices

Practical UL 508A knowledge: SCCR determination and documentation, listed and recognized component selection, spacing and clearance, wire bending space and field wiring terminal markings

Emergency stop and safety circuit design: dual-channel monitored wiring, safety relay selection, monitored contactors and reset logic, with an understanding of NFPA 79 and ISO 13849 intent

Switchgear interface familiarity: breaker close and trip control circuits, CT and PT wiring, 125 VDC control power, interposing relays, permissives and interlocks

New product development experience, ideally on smart AI UPS or similar power products, from concept through prototype, verification and production release with ECO/ECN discipline

Experience with both AutoCAD Electrical and EPLAN P8, or helping move a drawing standard from one platform to the other

Background in battery energy storage, UPS or power electronics products, including MV interfaces

Time working alongside a UL 508A panel shop or on an NRTL field evaluation, including working through inspector findings

Familiarity with SEL protective relays, managed industrial switches and 125 VDC control power gear

Working awareness of IEC 61439, IEC 60204-1, NFPA 79 and ANSI/IEEE C37 as they relate to panel and switchgear design

Some exposure to PLC programming or commissioning

AAS or BS in electrical engineering or electrical technology, or equivalent hands-on panel design experience

Required skills

Control Panel Design, AutoCAD Electrical, EPLAN P8, PLC and I/O Hardware Design, Ethernet and Modbus TCP, Electrical Wiring Documentation, UL 508A, NFPA 70 (NEC), Safety Circuit Design, Switchgear Interface Design, SCCR Determination, BOM Generation

Preferred skills

Some exposure to PLC programming or commissioning

Experience

7+ years