Senior Hardware Engineer – High-Power BLDC Controller (VESC Direction)

CYC MOTOR LTD; Sha Tin; On-site; HKD 420,000 - 800,000; Full time

Job summary

CYC MOTOR LTD is seeking a senior hardware engineer to lead the architecture, schematic design, and reviews for high‑power BLDC motor controllers. You will select components, optimize MOSFET/SiC power modules, and review PCBs in collaboration with software and mechanical teams.

The role requires 5+ years in hardware development for high‑power inverters or EV traction systems, with deep knowledge of 3‑phase topologies and gate drivers. HK on‑site position with competitive rewards.

Qualifications

• Bachelor’s degree in Power Electronics, Electrical Engineering, Automation, Electronic Engineering, or related fields.
• 5+ years of hardware development experience in high‑power inverters, motor controllers, industrial drives, or EV traction inverters.
• Deep understanding of 3‑phase inverter topologies, FOC motor control hardware needs, and gate driver design.
• Proven track record in high‑current power loop design with stray inductance, switching losses, and busbar layouts.

Responsibilities

• Lead the hardware architecture, schematic design, component selection, and PCB reviews for high‑power BLDC motor controllers.
• Design and implement the power stage platforms targeting phase current control.
• Design and optimize MOSFET/SiC power modules, gate drivers, busbars, DC bus, current sensing, and protection circuitry.
• Resolve high‑current parasitics, current sharing, ringing, and thermal issues.
• Collaborate with embedded software engineers on VESC firmware porting and hardware interface debugging.
• Lead validation, testing, EMC mitigation, and failure analysis.
• Drive prototypes through design, build, validation, and mass production (NPI).
• Author and maintain design specs, calculation sheets, test reports, BOMs, and manufacturing instructions.

Skills

High-power hardware development

3-phase inverter knowledge

Gate driver design

VESC familiarity

Education

Bachelor’s degree in Power Electronics, Electrical Engineering, Automation, Electronic Engineering, or related fields

Tools

MOSFET selection experience

Sensing & measurement tools

EMC testing equipment

Power electronics lab equipment

Job description

Responsibilities 職責

Hardware Architecture & Schematics
硬體架構與設計

Lead the hardware architecture, schematic design, component selection, and PCB reviews for high‑power BLDC motor controllers.
負責高功率無刷電機控制器的硬體架構設計、原理圖設計、器件選型及 PCB 審核。

Power Stage Engineering
功率級工程實現

Design and implement the power stage platforms targeting phase current
負責電壓平台、相電流控制器的功率級設計與工程實現。

Core Circuitry Optimization
核心電路優化

Design and optimize MOSFET/SiC power modules, gate drivers, busbars, DC bus, current sensing, and protection circuitry.
設計和最佳化 MOSFET/SiC 功率模組、閘極驅動、母排、直流匯流排、電流取樣及保護電路。

High‑Current Parasitics & Dynamics
寄生參數與動態問題攻關

Resolve high‑current challenges, including parasitic inductance, current sharing/balancing, switching ringing, voltage spikes, circulating currents, thermal runaway, and power device reliability.
解決高電流應用中的寄生電感、均流、開關振盪、電壓過衝、環流、熱失控及功率器件可靠度問題。

Thermal Management
熱設計與驗證

Perform power loss analyses, design heat sinks and liquid/air cooling solutions, and conduct temperature rise and thermal cycling validations.
負責控制器熱設計，包括功率損耗分析、散熱器及液冷 / 風冷方案設計、升溫測試和熱循環驗證。

Hardware Protection
硬體保護機制

Design fast, reliable protection mechanisms for overcurrent, short circuit, overvoltage, undervoltage, overtemperature, phase loss, and gate driver faults.
設計過流、短路、過壓、欠壓、過溫、缺相及閘極驅動異常等硬體保護機制。

VESC Integration & Debugging
VESC 系統與軟體配合

Collaborate with embedded software engineers on VESC firmware porting, hardware interface debugging, parameter calibration, and system‑level co‑debugging.
配合嵌入式軟體工程師完成 VESC 韌體適配、硬體介面除錯、參數標定及整機聯調。

Validation & Testing
測試驗證與故障分析

Lead double‑pulse testing (DPT), dynamometer testing, extreme operation verification, EMC mitigation, and failure analysis (FA).
負責雙脈衝測試 (DPT)、功率台架測試、極限工況驗證、EMC 整改及失效分析 (FA)。

NPI & Mass Production
量產導入與跨團隊協作

Drive prototypes through design, build, validation, and mass production (NPI), collaborating with PCB, mechanical, supply chain, and manufacturing teams to address engineering issues.
推動樣機完成設計、試製、驗證直至量產導入 (NPI)，與 PCB、結構、供應鏈及生產團隊協作解決各類工程問題。

Documentation
文件撰寫與維護

Author and maintain design specs, calculation sheets, test reports, BOMs, and manufacturing test instructions.
撰寫並維護設計規範、計算文件、測試報告、BOM 物料清單及生產測試規範。

Requirements 要求

Education
教育背景

Bachelor’s degree or above in Power Electronics, Electrical Engineering, Automation, Electronic Engineering, or related fields.
電力電子、電機工程、自動化、電子工程或相關專業本科及以上學歷。

Experience
工作經驗

5+ years of hardware development experience in high‑power inverters, motor controllers, industrial drives, or EV traction inverters.
具備 5 年以上大功率逆變器、電機控制器、工業驅動器或新能源汽車電控硬體開發經驗。

Domain Knowledge
專業知識

Deep understanding of 3‑phase inverter topologies, FOC motor control hardware demands, power loop optimization, and gate driver design.
熟悉三相逆變器拓樸、FOC 磁場導向控制硬體需求、功率迴路最佳化及閘極驅動設計。

High‑Current Mastery
大電流設計能力

Proven track record in high‑current power loop design with the ability to independently analyze stray inductance, switching losses, parallel device current sharing, and busbar layouts.
具備高電流功率迴路設計實戰經驗，能夠獨立分析雜散電感、開關損耗、器件並聯均流以及母排佈局。

Power Devices
功率器件經驗

Solid expertise in MOSFET selection and applications; hands‑on experience in parallel MOSFET or power module design.
精通 MOSFET 功率器件選型與應用，具備 MOSFET 並聯或功率模組設計實操經驗。

Current Sensing & Signal Integrity
取樣與訊號抗干擾

Proficient in Hall‑effect, shunt, and fluxgate sensing, alongside isolation and anti‑interference design in high common‑mode transient environments (high dV/dt, dI/dt).
熟悉霍爾、分流電阻、磁通門多種電流取樣方案；精通高共模暫態（高 dV/dt、dI/dt）環境下的訊號隔離與抗干擾設計。

Instrumentation
測試設備使用

Skilled in operating oscilloscopes, differential probes, high‑bandwidth current probes, electronic loads, and power analyzers.
熟練使用示波器、差分探棒、高頻寬電流探棒、電子負載、功率分析儀等測試儀器。

Analytical Skills
理論計算能力

Capable of performing critical calculations for component losses, junction temperature (Tj), short‑circuit withstand capability, DC bus ripple, and capacitor lifespan.
能夠獨立完成器件損耗、接面溫度 Tj、短路耐受能力、直流匯流排漣波、電容壽命等關鍵工程計算。

PCB & Layout Standards
PCB 佈局規範

Expert knowledge of high‑voltage clearances/creepage, high‑current copper layers, and layout isolation between power loops and sensitive signal circuits.
精通 PCB 設計規範，掌握高壓電氣間隙 / 爬電距離、大電流銅箔處理、功率迴路與敏感訊號迴路分區隔離佈局。

Problem Solving
綜合能力

Strong analytical skills in troubleshooting, laboratory validation, failure analysis, and cross‑functional communication.
優秀的問題排查、實驗驗證、失效分析能力，具備良好跨部門溝通協作能力。

Preferred Qualifications 優先考慮

Experience designing high‑current, low‑to‑medium voltage MOSFET controllers—specifically projects with phase currents ranging from hundreds .

具備中低壓大電流 MOSFET 控制器設計經驗，有數百安培以上相電流專案經歷。

Track record high‑power motor controllers, inverters, or VESC‑derived products.

有大功率電機控制器、逆變器或基於 VESC 衍生產品開發經驗。

Familiarity with the VESC hardware/software architecture, open‑source hardware, and VESC Tool debugging workflows.

熟悉 VESC 軟硬體架構、開源硬體、VESC Tool 除錯流程。

Hands‑on experience with parallel MOSFET configurations, low‑inductance busbars, laminated busbars, or power module packaging design.

具備 MOSFET 並聯方案、低電感母排、疊層母排、功率模組封裝設計實操經驗。

Practical experience in double‑pulse testing, short‑circuit testing, EMC certification, or high‑power dyno testing.

有雙脈衝測試、短路測試、EMC 認證、大功率台架測試實操經驗。

Experience with SiC MOSFETs, liquid cooling systems, functional safety (e.g., ISO 26262), or high‑volume mass production (SOP).

具備 SiC MOSFET、液冷系統、功能安全 ISO 26262、大批量量產 SOP 經驗。

Proven successful mass‑production cases for high‑power controllers, with clear personal ownership and technical contributions.

有已經量產落地的大功率控制器專案案例，能夠清晰闡述個人承擔職責與技術貢獻。