Electrical Design Engineer in Chandler

Job Description

Company Description: Tier Power Systems designs and manufactures custom low-voltage switchgear, switchboards, panelboards, industrial control panels, and electrical enclosures that support mission-critical power infrastructure. We are growing rapidly and are looking for a Electrical Design Engineer who enjoys solving complex engineering challenges, turning concepts into detailed 3D models while working closely with manufacturing to deliver high-quality products.

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Job Summary: The Electrical Engineer owns the complete Electrical design lifecycle for custom electrical equipment—from customer specifications through Electrical Schematics, BOM Creation, Testing & Programming in compliance with UL, IEEE and NFPA standards. This role is partnering closely with mechanical engineering, manufacturing, and production to develop scalable, manufacturable solutions.

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This is a hands-on engineering role with approximately 70% office-based design work and 30% Panel shop and Testing support, ensuring designs transition successfully from design to production.

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Job Responsibilities/Duties:

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• Lead the electrical design and development of low-voltage and medium-voltage switchgear, switchboards, and power distribution equipment, from initial customer requirements through manufacturing release and project completion.

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• Develop and review electrical system documentation, including single-line diagrams, three-line diagrams, control schematics, wiring diagrams, interconnection drawings, and other electrical design documentation required for manufacturing and customer approval.

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• Select and specify major electrical components, including circuit breakers, protective devices, bus systems, metering, transformers, control power equipment, and related components, based on project requirements and applicable electrical standards.

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• Ensure equipment designs comply with applicable industry standards and codes, including UL 891, NFPA 70 (NEC), and applicable IEEE C37 standards, as required by the product and application.

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• Determine appropriate equipment voltage ratings, continuous-current ratings, interrupting ratings, and short-circuit withstand ratings based on system requirements and available fault-current information.

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• Develop and review grounding and bonding requirements for switchgear and switchboard assemblies in accordance with applicable NEC, UL, IEEE, and customer requirements.

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• Develop electrical protection strategies and coordinate the application of circuit breakers, protective relays, trip units, fuses, and other protective devices to provide appropriate system protection and coordination.

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• Design and review control and interlock schemes, including electrical and mechanical interlocks, permissives, trip circuits, emergency power-off (EPO), alarms, status indication, and other control functions.

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• Engineer and integrate automatic and manual transfer schemes, including transfer switches and breaker-based transfer systems, where required by the application.

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• Develop and review auxiliary power systems, including AC and DC control power, control power transformers, battery systems, panelboards, receptacles, lighting, heaters, and other auxiliary electrical loads incorporated into equipment designs.

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• Coordinate electrical interfaces with PLC/control systems, building management systems (BMS), generator controls, UPS systems, HVAC equipment, fire alarm systems, and other external systems as required by the project.

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• Review customer specifications, drawings, and technical requirements to identify design requirements, exceptions, potential conflicts, and compliance concerns before equipment is released for manufacturing.

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• Provide technical leadership during customer drawing reviews, design reviews, and engineering discussions, and communicate technical solutions clearly to customers, project managers, vendors, and internal teams.

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• Create, review, and maintain accurate Bills of Materials (BOMs), ensuring electrical components and quantities are consistent with approved drawings, engineering requirements, and manufacturing needs.

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• Work closely with Mechanical Engineering, Project Management, Procurement, Production, and Quality to resolve technical issues and ensure projects are successfully transitioned from engineering into manufacturing.

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• Provide engineering support to manufacturing by resolving design questions, component substitutions, wiring issues, assembly concerns, and nonconformances encountered during production.

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• Evaluate alternate components and manufacturers when necessary due to availability, lead time, cost, obsolescence, or customer requirements, while maintaining electrical performance, safety, and regulatory compliance.

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• Support and participate in First Article Inspections (FAI), Factory Acceptance Testing (FAT), functional testing, and other product verification activities.

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• Provide technical support for commissioning, startup, and field troubleshooting, including investigation and resolution of electrical equipment issues when required.

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• Support UL/NRTL certification and listing activities, including interpretation of applicable standards, design reviews, documentation, testing, and resolution of compliance issues.

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• Participate in the development and continuous improvement of engineering standards, design practices, drawing templates, component standards, BOM structures, and engineering processes.

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• Identify opportunities to improve product reliability, manufacturability, standardization, cost, and engineering efficiency while maintaining safety and compliance requirements.

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• Serve as a technical resource and mentor for junior electrical engineers, designers, and other engineering personnel, providing design guidance and reviewing engineering work as appropriate.

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• Perform other engineering and job-related duties as assigned.

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Qualifications: 

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Required Qualifications

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• Bachelor’s degree in Electrical Engineering from an accredited college or university, or equivalent combination of education and directly relevant electrical power distribution experience.

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• Minimum of 7 years of progressive electrical engineering experience, with significant experience in power distribution equipment, switchgear, switchboards, or related electrical equipment.

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• Strong understanding of three-phase power distribution systems, including voltage, current, power, power factor, grounding, and system configuration.

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• Demonstrated knowledge of short-circuit current, interrupting ratings, short-time withstand ratings, and equipment application requirements.

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• Experience selecting and applying low-voltage power circuit breakers, molded-case circuit breakers, insulated-case circuit breakers, protective devices, metering equipment, control power components, and related switchgear components.

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• Experience developing or reviewing control circuits, breaker interlocks, transfer schemes, permissives, trip circuits, alarms, and equipment status/indication circuits.

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• Ability to interpret customer specifications, electrical drawings, engineering studies, and project requirements and translate those requirements into manufacturable electrical equipment designs.

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• Experience developing, reviewing, and maintaining Bills of Materials (BOMs) and ensuring consistency between engineering drawings, component selections, and manufacturing requirements.

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• Demonstrated ability to troubleshoot electrical equipment and resolve technical issues encountered during manufacturing, testing, commissioning, or field operation.

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• Strong technical communication skills with the ability to communicate engineering concepts and design decisions to customers, vendors, manufacturing personnel, and other engineers.

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• Ability to independently manage engineering responsibilities across multiple projects while maintaining technical accuracy, quality, and project schedules.

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• Demonstrated ability to review engineering work and provide technical guidance or mentorship to less-experienced engineers and designers.

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Qualifications

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• Experience with equipment utilizing major circuit breaker manufacturers such as ABB, Eaton, Schneider Electric/Square D, and Siemens.

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• Experience with automatic transfer systems, generator paralleling or generator distribution systems, UPS systems, and redundant power distribution architectures.

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• Familiarity with protective relays, power meters, communication networks, and intelligent electronic devices (IEDs) used in modern switchgear and power distribution systems.

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• Experience with electrical communication protocols such as Modbus RTU/TCP, Ethernet/IP, BACnet, or other industrial communication protocols used for equipment monitoring and system integration.

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• Experience supporting UL/NRTL certification, product testing, Factory Acceptance Testing (FAT), or other regulatory compliance activities.

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• Familiarity with AutoCAD, AutoCAD Electrical, or similar electrical drafting/design software.

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• Previous experience providing technical leadership, design reviews, engineering standardization, or mentorship within an electrical engineering team.

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Physical Requirements: 

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• Must be able to lift up to 50lbs.

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• Must be able to handle exposure to moderate noise, dust, vibration and temperature variations typical to a manufacturing environment.

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• Ability to bend, stoop, kneel, crouch, reach, and climb ladders or stairs when inspecting equipment or supporting production.

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• Computer operation, CAD modeling, measuring equipment, and handling engineering tools and components.

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Tier Power Systems, Inc., is an equal opportunity employer committed to providing a workplace free from discrimination and harassment. We make employment decisions based on qualifications, merit, skills, experience, and business needs without regard to , religion, , origin, , , veteran status, or any other characteristic protected by applicable federal, state, or local laws. We are dedicated to fostering a respectful and inclusive work environment where all individuals are treated with dignity and respect.