Power DQA Engineer (ESS)

Posted 8 Days Ago
Be an Early Applicant
Hiring Remotely in Taipei, TWN
Remote
Senior level
Hardware • Information Technology • Internet of Things • Software
The Role
Own system-level DQA and validation for energy storage products across the NPI lifecycle. Develop and execute reliability, safety, performance, integration, battery, BMS, inverter, thermal, environmental, and grid-interaction testing. Investigate failures, determine root causes, verify corrective actions, and apply FMEA, MTBF, statistical analysis, and field learnings to improve quality. Collaborate with engineering, firmware, product, supplier, and manufacturing teams on qualifications, changes, and sustaining activities.
Summary Generated by Built In

About Ubiquiti

At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity.

Responsibilities (What he/she will do after joining UI)

- Own system-level DQA and validation activities for Energy Storage System (ESS) products throughout the NPI lifecycle.

- Develop test plans and qualification criteria for ESS reliability, functionality, performance, safety, and system integration.

- Validate ESS architectures, including battery packs, BMS, PCS/inverters, EMS, power distribution, protection circuits, and grid interaction.

- Perform system integration testing for charge/discharge, grid-connected operation, backup power, load transitions, power outages, and recovery scenarios.

- Define and execute reliability validation, including temperature, thermal cycling, humidity, vibration, ESD, surge, and long-term operation.

- Validate BMS protection mechanisms, including over/under-voltage, over-current, short-circuit, temperature protection, SOC/SOH, and cell balancing.

- Validate PCS/Inverter performance, including conversion efficiency, load response, abnormal operating conditions, and protection mechanisms.

- Conduct high-power and thermal validation for battery cells, connectors, terminals, busbars, relays/contactors, and other high-current paths.

- Conduct failure analysis (FA), root cause investigation, and corrective action verification for NPI, reliability, and field/RMA issues.

- Apply FMEA/DFMEA, MTBF, statistical analysis, and field lessons learned to improve test coverage and prevent recurrence.

- Support second-source qualification, engineering changes, Control Run validation, and sustaining quality activities.

- Collaborate with EE, ME, FW, BMS, Power Electronics, PM, suppliers, and manufacturing teams to drive quality improvements.


Requirement (Must-Haves)
  • Bachelor's degree or above in Electrical/Electronics, Power Electronics, Energy Engineering, or related fields.
  • 5+ years of experience in hardware/system validation, reliability, or design quality engineering.
  • Experience with ESS/BESS, UPS, PV/Solar Inverter, EV Charger, or other high-power systems.
  • Strong knowledge of Battery Pack, BMS, PCS/Inverter, EMS, and AC/DC power systems.
  • Familiar with Li-ion/LFP/NMC batteries, SOC, SOH, DOD, internal resistance, cycle life, and cell balancing.
  • Experience with BMS protection, high-current/thermal, environmental, ESD, and surge validation.
  • Proficient with oscilloscopes, multimeters, power analyzers, electronic loads, power supplies, data loggers, and thermal chambers.
  • Capable of independently developing test plans, conducting FA, and verifying corrective actions.
  • Knowledge of FMEA/DFMEA, MTBF, reliability engineering, and statistical analysis.
  • Strong system-level problem-solving skills with an end-user-oriented mindset.

Preferred Qualifications
  • Experience with residential/commercial ESS, BESS, solar energy storage, or hybrid inverters.
  • Experience with Battery/BMS Analyzers, battery cyclers, and high-power test systems.
  • Knowledge of PCS/Inverter, MPPT, DC bus, grid interface, and backup operation.
  • Familiar with CAN, RS-485/Modbus, Ethernet, and BMS/EMS communication.
  • Familiar with UL 9540/9540A, UL 1973, UL 1741, IEEE 1547, or IEC 62619.
  • Experience with battery safety, thermal runaway risk, RMA/field analysis, or reliability lab management is a plus.

Benefits (DO NOT EDIT)
  • International work environment and collaboration with global development teams
  • Excellent work conditions
  • Competitive package: great pay, perks, and benefits
  • Group insurance and health coverage
  • Flexible working hours and patterns
  • Complimentary drinks and snacks at the office

Skills Required

  • Bachelor's degree or higher in Electrical Engineering, Electronics Engineering, Power Electronics, Energy Engineering, or a related field
  • 5+ years of experience in hardware validation, system validation, reliability engineering, or design quality engineering
  • Experience with ESS/BESS, UPS, PV/solar inverters, EV chargers, or other high-power systems
  • Strong knowledge of battery packs, BMS, PCS/inverters, EMS, and AC/DC power systems
  • Knowledge of Li-ion/LFP/NMC batteries, SOC, SOH, DOD, internal resistance, cycle life, and cell balancing
  • Experience with BMS protection, high-current and thermal validation, environmental testing, ESD, and surge validation
  • Proficiency with oscilloscopes, multimeters, power analyzers, electronic loads, power supplies, data loggers, and thermal chambers
  • Ability to independently develop test plans, conduct failure analysis, and verify corrective actions
  • Knowledge of FMEA/DFMEA, MTBF, reliability engineering, and statistical analysis
  • Strong system-level problem-solving skills with an end-user-oriented mindset
  • Experience with residential or commercial ESS, BESS, solar energy storage, or hybrid inverters
  • Experience with battery/BMS analyzers, battery cyclers, and high-power test systems
  • Knowledge of PCS/inverters, MPPT, DC bus, grid interface, and backup operation
  • Familiarity with CAN, RS-485/Modbus, Ethernet, and BMS/EMS communication
  • Familiarity with UL 9540/9540A, UL 1973, UL 1741, IEEE 1547, or IEC 62619
  • Experience with battery safety, thermal runaway risk, RMA/field analysis, or reliability lab management

Ubiquiti Inc. Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Ubiquiti Inc. and has not been reviewed or approved by Ubiquiti Inc..

  • Fair & Transparent Compensation Pay is considered competitive in many engineering and corporate roles, with engineering-heavy teams frequently characterizing compensation as very good or great. Compensation often stands out positively relative to other aspects of the job.
  • Healthcare Strength Health coverage is employer-paid in the U.S. and includes dental, vision, life, and disability insurance. Coverage quality is characterized as strong across multiple references.
  • Leave & Time Off Breadth Time off options include vacation/PTO and maternity/paternity leave, with some roles offering unlimited PTO and hybrid/remote flexibility. The core lineup appears broadly standard across U.S. locations.

Ubiquiti Inc. Insights

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The Company
HQ: New York, NY
895 Employees
Year Founded: 2005

What We Do

At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Simplifying IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons—all while shaping the future of connectivity. We invite you to join our team.

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