Senior Electrical Engineer - Power Conversion

Infinite Electronics, Inc.; Lewisville (TX); Vor Ort; USD 120.000 - 180.000; Vollzeit

Zusammenfassung

Infinite Electronics, a leader in high-reliability connectivity and power solutions, seeks a senior electrical engineer to lead power conversion electronics for Battery Back Up and UPS systems. You will own BMS hardware, bidirectional DC-DC design, and protective architectures while coordinating with firmware and QA teams.

You will evaluate, test, and qualify BBU electronics, work with suppliers, and drive design reviews and documentation through production, ensuring regulatory compliance and

Qualifikationen

• Bachelor's degree in Electrical Engineering or related field; Master's preferred.
• 8+ years of power electronics hardware design experience in battery backup/UPS or energy storage.

Aufgaben

• Serve as senior electrical design authority for power conversion electronics from architecture through production release.
• Design and analyze bidirectional DC-DC converters and topologies (buck/boost, LLC, etc.).
• Develop charging/discharging circuitry for Li-ion, LiFePO4, and lead-acid cells.
• Define protection architecture: OVP/UVP, OCP, AFC, thermal protection.
• Design BMS hardware including AFE, cell monitoring, isolation, and sensing chains.
• Design and validate communications interfaces (CAN/CAN-FD, I2C, SPI, UART, Modbus).
• Own schematic capture, PCB layout direction for high-current/high-voltage stages.
• Perform MTBF, FMEA, and reliability analyses; drive design decisions.
• Benchmark off-the-shelf BBU electronics; document performance and risk.
• Bring up/test prototypes with oscilloscopes, loads, battery cyclers; perform DV/PV tests.
• Collaborate with firmware on control algorithms, telemetry, fault handling.
• Support UL/IEC/UN 38.3 safety qualifications with labs and compliance teams.
• Manage supplier and CM relationships; lead design reviews and second-source strategies.
• Document requirements, designs, analyses, and test results; mentor juniors.

Kenntnisse

Power electronics design

BMS hardware

CAN/CAN-FD protocols

PCB layout supervision

Control loop analysis

Engineering mentoring

Thermal analysis

Ausbildung

Bachelor's degree in Electrical Engineering

Master's degree preferred

Tools

Altium

OrCAD

KiCad

SPICE

Oscilloscopes / power analyzers

Jobbeschreibung

Infinite Electronics powers a global portfolio of specialized connectivity companies delivering reliable engineered solutions worldwide. Built as a unified platform for speed, scale, and reliability, the company combines shared infrastructure, best-in-class logistics, and deep engineering expertise to support mission-critical connectivity needs. Through scalable global operations and rapid development capabilities, Infinite helps customers accelerate innovation and bring new ideas to market. Our companies offer strong value-added solutions across several areas, including power distribution, surge protection, EMP, RF, cables, fiber optic solutions, connectors, sensors, and antennas. This broad product portfolio is supported by robust engineering capabilities and vertically integrated global manufacturing operations. Infinite Electronics is the first choice for customers across various markets, including telecommunications, industrial, military, energy, medical, transportation, and data centers.

Position Description

This position provides senior electrical engineering leadership for the design, development, and qualification of power conversion electronics used in Battery Back Up (BBU) and Uninterruptible Power Supply (UPS) systems. Scope includes Battery Management System (BMS) hardware, bidirectional DC-to-DC conversion, charging and discharging circuitry, protection architecture, voltage/current/temperature sensing, and communications interfaces. This role also owns the technical evaluation and benchmarking of commercial BBU electronics to inform build-versus-buy decisions. Deliver high-quality engineering support to internal teams and customers with a solution-oriented approach.

Essential Duties And Responsibilities

• Serve as the senior electrical design authority for power conversion electronics in Battery Back Up and UPS platforms, from architecture definition through production release.
• Design and analyze bidirectional DC-to-DC converters, including buck/boost, half-bridge, dual active bridge, LLC/phase-shifted full-bridge, topology selection, magnetics specification, and control-loop compensation.
• Develop charging and discharging circuitry for Li-ion, LiFePO4, and lead-acid strings, including CC/CV charge stages, pre-charge and inrush control, soft-start, and balancing hardware.
• Define and design the protection architecture, including overvoltage, undervoltage, overcurrent, short-circuit, reverse-polarity, overtemperature protection, contactor/FET disconnect, fusing, and fail-safe behavior.
• Design BMS hardware, including analog front ends (AFE), fuel-gauge and cell-monitoring ICs, isolation barriers, and cell-voltage, pack-current, and temperature sensing chains; specify accuracy, calibration, and drift budgets.
• Design and validate communications interfaces, including CAN/CAN-FD, I2C, SPI, UART, RS-485, Modbus, and SMBus, between BMS, chargers, converters, and system controllers.
• Own schematic capture, component selection, and PCB layout direction for high-current and high-voltage power stages, with attention to thermal management, creepage/clearance, EMI/EMC, and derating.
• Perform worst-case, efficiency, thermal, magnetics, and reliability analyses, including MTBF and FMEA, and drive design decisions from the results.
• Evaluate, benchmark, and qualify commercial off-the-shelf BBU electronics and third-party power modules; document performance, risk, and cost findings to support build-versus-buy recommendations.
• Bring up, test, and debug prototypes using oscilloscopes, power analyzers, electronic loads, battery cyclers, thermal imaging, and current probes; develop and execute design verification and validation test plans.
• Partner closely with firmware engineers on control algorithms, telemetry, fault handling, and hardware/firmware integration for BMS and power conversion.
• Support product safety and regulatory qualification, including UL, IEC, and UN 38.3, and coordinate with test labs, quality, and compliance teams through certification.
• Manage supplier and contract-manufacturer technical relationships, including design reviews, component qualification, and second-source strategy.
• Document requirements, design specifications, analyses, and test results; lead design reviews and provide technical mentorship to junior engineers.

Education and Experience

• Bachelor's degree in Electrical Engineering or a related field; Master's degree preferred.
• 8+ years of power electronics hardware design experience, including direct experience with battery backup, UPS, energy storage, or DC-DC power conversion products.
• Demonstrated design ownership of switch-mode power converters, including bidirectional DC-to-DC conversion, from concept through production.
• Hands-on experience designing battery charging and discharging circuitry and BMS hardware for Li-ion, LiFePO4, or lead-acid chemistries.
• Strong working knowledge of protection architecture and fail-safe design for high-energy battery systems, including disconnect devices, fusing, and fault detection.
• Experience designing precision sensing circuits for cell voltage, pack current, including shunt and Hall-effect, and temperature, including isolation and accuracy budgeting.
• Proficiency with analog and digital control loop design, compensation, and stability analysis for power converters.
• Experience with communication protocols such as CAN/CAN-FD, I2C, SPI, UART, RS-485, and Modbus in power system applications.
• Proficiency with schematic capture and PCB design tools, such as Altium, OrCAD, and KiCad, and circuit simulation tools, such as SPICE, PLECS, or similar.
• Strong laboratory skills with oscilloscopes, power analyzers, electronic loads, battery cyclers, and thermal measurement equipment.
• Working knowledge of EMI/EMC design and mitigation techniques for switching power supplies.

Preferred Qualifications

• Experience with UL 1973, UL 9540, UL 1778, IEC 62619, IEC 62040, or UN 38.3 battery and UPS safety standards.
• Familiarity with functional safety standards, including IEC 61508 and ISO 26262, as applied to power electronics.
• Experience with battery AFE, cell-monitoring, and fuel-gauge ICs, such as Texas Instruments BQ series, Analog Devices, and NXP.
• Experience with wide-bandgap devices, including SiC and GaN, and high-frequency converter design.
• Exposure to power factor correction (PFC) front ends and DC-to-AC inverter design for UPS applications.
• Experience with data center, telecommunications, industrial, or military power system requirements.
• Experience evaluating and integrating third-party or contract-manufactured power electronics assemblies.
• Professional Engineer (PE) license or equivalent advanced credential.

Personal Traits and Characteristics

• Highly organized and detail-oriented.
• Strong analytical and problem-solving skills.
• Effective communicator across technical and non-technical audiences.
• Results-driven with the ability to manage multiple priorities.
• Collaborative, innovative, and safety-conscious.
• Comfortable providing technical leadership and mentoring less experienced engineers.

Reports To: Director of Product Development

Work Environment

This role is designated as on-site. Employees regularly collaborate with firmware, hardware, quality, and product teams in the lab and office setting during normal or extended business hours when necessary. Travel is part of this role's responsibilities, including supplier meetings, customer visits, test lab support, and internal engineering reviews.

Physical Job Requirements

• Ability to remain in a stationary position for extended periods while working at a computer or attending meetings.
• Ability to operate standard office equipment and regularly use a computer and other electronic devices.
• Ability to communicate effectively with customers, colleagues, and business partners in person and through electronic communication.
• Ability to travel as required to customer locations, company facilities, meetings, and industry events.
• Ability to move throughout office, customer, and event environments as necessary to perform the essential functions of the position.

Equal Employment Opportunity

Infinite Electronics is proud to be an Equal Employment Opportunity and Affi ... all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, gender expression, marital status, age, national origin, disability status, protected veteran status, or any other characteristic protected by law. We are committed to building a diverse workforce and we actively encourage women, minorities, people with disabilities and veterans to apply.