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Principal Mechanical Engineer Charging

Gerrell & Hard
City of London
1 day ago
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Principal Mechanical Engineer


Location: Hybrid / Bicester


Type: Permanent


Salary: Competitive


TUAL Technology is an innovative, VC-backed start-up based in Bicester, developing


PowerUp


a high‑power EV charging solution


designed for grid‑constrained sites. By integrating battery storage, smart energy management, and ultra‑fast DC charging, TUAL delivers seamless electrification where traditional grid capacity falls short. Working with enterprise customers across Europe, TUAL is transforming the productivity and profitability of electric commercial vehicle fleets through a portfolio of intelligent, software‑defined, cloud and IoT‑enabled charging solutions.


The Role

TUAL is seeking a hands‑on


Principal Mechanical Engineer


with proven experience in


EV charging systems or related high‑power electronics


to lead the development, testing, and delivery of our advanced charging platforms. You’ll take ownership of mechanical architecture, thermal management, structural components, and wiring harnesses


guiding products from concept through to production.


This is a key technical role in a fast‑moving, VC‑backed start‑up, working closely with the VP Product to shape and realise high‑performance charging hardware for commercial fleets.


What You’ll Do

Lead mechanical development of chargers, HV / LV subsystems, cooling systems, and enclosures


Build, test, and validate prototypes and final products against performance targets


Define and maintain design‑for‑manufacture and quality processes (DFMEA, PPAP)


Run the in‑house build & test lab and resolve technical challenges


Collaborate with suppliers, partners, and internal teams to optimise manufacturability and cost


Lead certification, compliance, and regulatory testing


Mentor engineers and technicians, driving continuous improvement


Your Background

MEng in Mechanical, Electrical, or Automotive Engineering


Significant experience in EV charging, high‑power electrical systems, or energy storage hardware


Strong knowledge of thermal management, structural components, HV systems, and assembly processes


Experience with FMEA, quality planning, and testing methodologies


Hands‑on, pragmatic, and able to work autonomously in a dynamic start‑up environment


Familiarity with fleet vehicle applications or large‑scale charging infrastructure is highly advantageous


Why Join

This is your chance to own the mechanical engineering of


PowerUp, our cutting‑edge EV charging system, in a small, fast‑growing start‑up with global ambitions. You’ll see your work delivered in real‑world products and help transform electrification for commercial fleets.


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