System Online · Portfolio v4.1
EE · Power Systems · Embedded

ZARAOSEI

Electrical Design Engineer

I design intelligent power systems, embedded electronics, and high-voltage infrastructure — bridging the gap between theoretical circuit design and production-grade hardware that performs in the field.

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11+
Years Exp.
58+
Projects
5×
Patents
4MW
Power Designed
R1 C1 MCU STM32 V+ GND VCC 3.3V GND PLANE
Supply Voltage
3.3V
Electrical engineer
Location
Austin, TX
License
PE — Texas
Education
M.Eng — MIT
Clearance
Secret (DoD)
Speciality
Power + Embedded
Availability
Open — May 2025
// 01 — About

Engineered for
high-voltage impact

With 11+ years spanning power electronics, embedded systems, and high-voltage infrastructure, I've designed circuits that power everything from consumer IoT devices to 4MW grid-tie solar inverters and defence-grade avionics systems.

My career began at Texas Instruments designing mixed-signal ICs, before moving into power systems engineering at GE Energy and ultimately leading a hardware team at a Series C EV tech startup. I hold five patents in power conversion topology and energy storage BMS design.

"My goal is always the same: deliver hardware that works the first time in the field — not just on the bench."

I bring full-stack hardware capability: schematic capture, PCB layout, signal integrity analysis, EMC compliance, firmware bring-up, and manufacturing handoff — all under one roof.

Power ElectronicsEmbedded SystemsFPGA Design PCB LayoutSignal IntegrityEMC / EMI Motor ControlBMS DesignSCADA
// 02 — Disciplines

Core Expertise

⚡
Expert
Power Electronics
DC-DC converters, AC-DC rectifiers, inverters (single & three-phase), PFC stages, and gate driver design from 5W to 4MW. Full EMC-compliant designs.
LTspicePSIMSiC/GaNIEC 61000
🔌
Expert
PCB Design & SI
Multi-layer PCB layout with controlled impedance, DDR routing, high-current planes, thermal management, and design-for-manufacture with IPC-2221 compliance.
AltiumKiCadCadenceHyperLynx
🧠
Advanced
Embedded Systems
Bare-metal firmware and RTOS-based systems on ARM Cortex-M, ESP32, and STM32. Peripheral drivers, bootloaders, OTA updates, and hardware bring-up.
C / C++FreeRTOSSTM32JTAG
🔋
Expert
BMS & Energy Storage
Battery management system design for Li-ion, LFP, and solid-state packs. Cell balancing, SoC/SoH estimation, thermal modelling, and ISO 26262 ASIL-B compliance.
BQ seriesMATLABISO 26262
📡
Proficient
FPGA & Digital Logic
RTL design in VHDL and Verilog for signal processing, custom motor control, and high-speed data acquisition on Xilinx and Intel FPGA platforms.
VHDLVerilogVivadoQuartus
🏭
Advanced
High-Voltage Systems
Grid-connected systems, substations, distribution switchgear, protection relaying, arc flash analysis, and utility-scale renewable energy interconnection.
ETAPSKMNFPA 70EIEEE 1584
// 03 — Projects

Featured Builds

Solar inverter farm
Power Systems · Renewable Energy
4MW Three-Phase Solar Grid-Tie Inverter Platform
📍 West Texas Solar Farm ⚡ SiC MOSFET topology 97.8% peak efficiency
Deployed
↗
PCB electronics
Embedded · IoT
Ultra-Low-Power Industrial Sensor Node — 10yr Battery Life
LoRaWAN · 2.4µA sleepIEC 60068 tested
↗
Battery pack EV
BMS · Automotive
400V / 100kWh EV Battery Management System — ASIL-B
ISO 26262 ASIL-BSeries B Startup
Production
↗
// 04 — Process

How I Design

01
Requirements & Architecture
Define electrical specs, block diagram, power budget, thermal envelope, and regulatory targets (CE, FCC, UL). Identify critical risks early.
02
Schematic & Simulation
Schematic capture with full SPICE simulation (LTspice/PSIM). Verify under worst-case, corner, and fault conditions before any layout begins.
03
PCB Layout & Review
Multilayer PCB with controlled impedance, signal integrity checks, thermal simulation, and design rule verification. Peer design review gate.
04
Prototype, Test & DFM
Hardware bring-up, bench characterisation, EMC pre-compliance testing, and design-for-manufacture optimisation ahead of production handoff.
// 05 — Proficiency

Technical Skills

Power Electronics Design97%
PCB Layout (Altium / Cadence)95%
SPICE Simulation93%
Embedded Firmware (C/C++)88%
FPGA (VHDL / Verilog)80%
High-Voltage Systems (ETAP)85%
EMC / EMI Compliance90%
// 06 — Credentials

Certifications & Licenses

PE
Professional Engineer (PE) — Electrical
Texas State Board of PE · License #EE-112847
IEEE
Senior Member — IEEE Power Electronics Society
Institute of Electrical and Electronics Engineers
MEng
M.Eng Electrical Engineering & Computer Science
Massachusetts Institute of Technology · 2013
FE
Fundamentals of Engineering (FE) — Electrical
NCEES Certified
EMC
Certified EMC Engineer (CEM)
iNARTE · International Certification Programme
// 07 — Experience

Career Timeline

2022 — Present
VoltEdge Technologies · Austin, TX
Principal Hardware Engineer
Lead a 7-person hardware team designing next-gen bidirectional EV chargers (up to 350kW). Own full product lifecycle from system architecture through production release. Authored three patents in GaN-based resonant converter topology.
GaN Power ICsLLC ResonantAltium 23ISO 15118Team Leadership
2018 — 2022
GE Renewable Energy · Schenectady, NY
Senior Power Systems Engineer
Designed control electronics and protection systems for 1.5MW–4MW utility-scale solar inverters. Delivered EMC-compliant designs for IEC 61727 and IEEE 1547 grid interconnection standards. Led arc flash analysis programme across 14 sites.
SiC MOSFETsIEC 61727ETAPArc FlashSCADA
2014 — 2018
Texas Instruments · Dallas, TX
Analog / Mixed-Signal IC Designer
Designed precision ADCs, gate driver ICs, and motor control SoCs in 40nm and 65nm CMOS processes. Supported application engineering for automotive and industrial power management product lines. Two patents filed.
Cadence Virtuoso40nm CMOSMotor ControlGate Drivers
2013 — 2014
MIT Research Lab of Electronics
Research Engineer — Power Group
Post-graduate research in switched-capacitor power converter architectures under Prof. D. Perreault. Published two IEEE TPEL journal papers on multi-level resonant converters.
Switched CapacitorIEEE TPELMATLAB/Simulink
// 08 — Contact

Power Up a Conversation

Open to senior IC design, power electronics leadership, and fractional hardware director roles. Available for on-site engagements in the US and remote globally.

📍
Location
Austin, TX · Remote Available
✉️
Email
zara@oseihardware.io
🔗
LinkedIn
linkedin.com/in/zara-osei-ee
💾
GitHub
github.com/zaraoseiEE
📄
Resume
Download PDF →
Available from May 2025