Senior Electrical Engineer - Power Conversion

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.

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.

• 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 (buck/boost, half‑bridge, dual active bridge, LLC/phase‑shifted full‑bridge), including 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: overvoltage, under voltage, overcurrent, short‑circuit, reverse‑polarity, and over temperature protection, along with 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 (CAN/CAN‑FD, I2C, SPI, UART, RS‑485, Modbus, 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,…