Prototype Assembly Technician

Job Title:

Prototype Assembly Technician

Department:
Operations

Reports To:

Prototype and Production Build Manager

Location:

Acton, West London

Employment Type:

Permanent

You will build battery energy storage systems from general assembly drawings, wiring schematics and parts lists.

This is not a role for someone who follows step-by-step work instructions. It is a role for someone who can read a GA, understand what the finished assembly needs to look like, and build it correctly the first time, mechanically, electrically and to standard. If you have spent your career on a line following a defined sequence, this will not suit you and we would rather say so now.

We are a small team building complex, safety-critical, high-voltage products at low volume. The work changes. Designs iterate. You will often be the first person to physically build something that has only existed as a model, and the quality of what you produce sets the standard for everything that follows it.

• Building mechanical and electrical sub-assemblies and complete BESS units from engineering drawings
• Working directly with design and engineering on prototype builds and design iterations, feeding back on manufacturability and serviceability
• Supporting Manufacturing Engineers with writing and improving the build documentation — SOPs, Bill of Process, work instructions — based on how the job is actually done
• Recording build data: serial numbers, part traceability, torque records, quality checks
• Self-inspecting and functionally checking your own work before it moves on
• Raising build and design issues clearly and early, rather than working around them
• Maintaining a safe, clean and organised build area, with health and safety front and centre

We are looking for recent, significant, hands-on experience across all of the following. Be prepared to give specific examples.

• Reading and building from general assembly drawings, exploded views, parts lists and wiring schematics without step-by-step instruction
• Interpreting tolerances, datums, fastener callouts and revision control
• Identifying and flagging drawing errors and discrepancies before building

• Wiring and terminating breakers, isolators, contractors and distribution equipment
• Busbar assembly, correct torque, insulation, and awareness of clearance and creepage
• Cable preparation and lug crimping — correct die selection, hydraulic and ratchet crimp tooling, and how to verify a crimp is sound
• Connector pinning — contact selection, correct crimp tooling and crimp height, insertion and extraction tooling, seal and backshell fitment
• Cable identification, labelling, continuity and insulation resistance checks

• Routing, supporting and clipping harnesses to a defined standard, not by eye
• Bend radii, strain relief, chafe protection, and segregation of power and signal
• Gland fitment, cable entry sealing and IP integrity

• Routing, clipping and supporting coolant pipework and hose at correct spacing
• Fitting types, correct torque and sealing methods
• Fill, bleed, pressure and leak-test procedures Mechanical assembly
  • Fastener selection, torque to specification, calibrated torque tooling and torque marking
  • Enclosure and sheet metal assembly, alignment, fit and finish
  • Competent use of hand tools, power tools and basic test equipment
  Quality and standards
  • A right-first-time approach, with the self-discipline to check before signing off
  • Accurate build records and traceability as a matter of habit
  • Comfortable using digital tools to record build data and follow digital work instructions
  • IMI Level 3 in Electric/Hybrid Vehicle System Repair and Replacement, or equivalent HV training
  • IPC/WHMA-A-620 or equivalent wiring harness standard awareness
  • Experience with lithium-ion battery systems, BMS and thermal management
  • Low-volume, prototype or NPI build experience in a startup or R&D-led environment
  • Counterbalance forklift licence

  HV training and certification will be provided where it is not already held.

  About you
  • Self-motivated, methodical, and genuinely proud of the…