DC/DC Power Electronics Engineer - Flexible Hours

Amazon Web Services (AWS); Paris; On-site; EUR 90,000 - 140,000; Full time

Job summary

Amazon Web Services is seeking a DC/DC Power Electronics Engineer to design isolated high-power DC/DC converter stages forming the core of the MV-to-800 VDC SST power-conversion architecture. You will own the DC/DC stage, design DAB/CLLC converters, optimize high-frequency modulation and ZVS/ZCS operation, and validate performance with simulations and hardware tests across data-center load profiles.

Collaboration with magnetics, thermal, and controls engineers will be essential to deliver

Qualifications

• Experience with isolated high-power DC/DC converter design.
• Experience with high-voltage power electronics and laboratory validation.
• Demonstrated ability to collaborate with controls, magnetics, thermal and PCB engineers.
• Experience documenting design decisions, assumptions, trade-offs, risks and technical specifications.

Responsibilities

• Design DAB, CLLC and related isolated DC/DC converter architectures.
• Develop high-frequency modulation strategies for high-power operation.
• Optimize ZVS/ZCS operating regions and switching performance.
• Evaluate efficiency across variable AI/data-center load profiles.
• Coordinate DC/DC design with medium-frequency transformer and inductor designs.
• Define electrical interfaces with the AC/DC front end and 800 VDC output.
• Assess paralleling, current sharing and module fault-isolation strategies.
• Support protection and control requirements for the DC/DC stage.
• Use PLECS, PSIM and/or MATLAB/Simulink to model converter behavior.
• Validate transient response, efficiency and thermal performance.
• Correlate simulation with hardware measurements.
• Support prototype testing and design iteration.
• Design the isolated DC/DC stage to support the system 800 Vdc unipolar LVDC interface, including ±0.5% switching ripple, ±1% static regulation and ±3% dynamic regulation targets.
• Support 150%/150 ms fault-protection coordination and 120%/5 s overload capability, subject to final product-level verification.
• Address redundancy, catcher/block architectures, current sharing and LVDC load-profile verification.
• As a DC/DC Power Electronics Engineer, your primary focus is designing and optimizing isolated converter architectures that serve as the core of our medium-voltage to 800 VDC power-conversion chain.
• You'll coordinate electrical interfaces with the AC/DC front end and 800 VDC output, assess paralleling and current-sharing strategies, and support prototype testing to correlate simulation results with hardware measurements.
• About The Team
• We are the team that keeps the cloud running. AWS Infrastructure Services owns the design, planning, delivery, and operation of all AWS global infrastructure - the servers, storage, networking, power, and cooling equipment that ensure our customers have continual access to the innovation they depend on.

Skills

Isolated DC/DC design

High-voltage power electronics

Cross-functional collaboration

Design documentation

Education

Bachelor's degree in Electrical Engineering

Tools

PLECS

PSIM

MATLAB/Simulink

Job description

Amazon Web Services is seeking a DC/DC Power Electronics Engineer to design isolated high-power DC/DC converter stages forming the core of the MV-to-800 VDC SST power-conversion architecture. You will own the DC/DC stage, design DAB/CLLC converters, optimize high-frequency modulation and ZVS/ZCS operation, and validate performance with simulations and hardware tests across data-center load profiles.

Collaboration with magnetics, thermal, and controls engineers will be essential to deliver