Power Electronics Engineer — Lead / Principal

Power Electronics Engineer — Lead / Principal

Location:

London, UK (on-site or hybrid)

Type:

Full-time | Permanent

Level:

Senior / Lead / Principal — scoped to experience

The Opportunity

Ampere Recruitment is working exclusively with a VC‑backed energy storage start‑up building plug‑in battery systems for homes and small businesses, aggregated into a virtual fleet for grid flexibility. Backed by founders with deep expertise in power electronics, energy storage, and grid systems, this is a genuine ground‑floor opportunity.

We are seeking a founding Power Electronics Engineer to own the full hardware architecture — from next‑generation inverter development through to supplier management and mass production. The role can be scoped at Senior, Lead, or Principal level depending on experience.

Key Responsibilities

• Own end‑to‑end hardware architecture: inverter, BMS, battery pack, thermal management, protection, and communications interfaces
• Develop and evaluate advanced bidirectional converter topologies — DAB, cycloconverter, cascaded H‑bridge, AC‑coupled designs, and novel approaches
• Lead decisions on switching device selection (SiC/GaN), magnetic design, modulation strategy, control loops, EMI/EMC, and safety design
• Define product‑level electrical specifications and translate commercial requirements into engineering constraints
• Review and validate supplier designs; select and qualify power semiconductors, magnetics, battery cells, and protection ICs
• Manage ODM/OEM suppliers and CMs through technical due diligence, factory visits, and manufacturing readiness
• Drive hardware from prototype through EVT, DVT, PVT, certification, and mass production
• Define and execute test plans covering safety, performance, efficiency, EMC, thermal, and grid‑interface behaviour
• Ensure compliance with G98, IEC, and UL standards; collaborate with firmware teams on hardware–software interfaces

Requirements

• Degree in Electrical Engineering or Power Electronics; Masters/PhD advantageous
• Hands‑on expertise in advanced bidirectional converter topology design
• Strong grasp of modulation strategies, magnetic design, control loops, EMI/EMC, and grid interface
• SiC and/or GaN device experience in high‑efficiency converter applications
• Proficient in PLECS, MATLAB/Simulink, or LTspice; Altium Designer or equivalent for schematic/PCB
• BMS and Li‑ion cell integration experience
• Proven track record from prototype to mass production; direct ODM/CM experience

What’s on Offer

• Competitive salary benchmarked to London market rates + equity options
• Full hardware roadmap ownership from day one
• Direct collaboration with an experienced founding team
• Mission‑driven work at the centre of the UK energy transition

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