The Prototype Integration Technician is a hands-on, electrically biased technician/engineer who leads and contributes to the design, build, commissioning, and testing of low-volume prototype power electronics and energy systems at Rimac Energy. 

The role operates at the intersection of electrical engineering, mechanical integration, and practical build, supporting the development of inverters, grid-connected systems, and associated energy storage hardware across early prototype, validation, and pre-production phases. 

The successful candidate will be comfortable building and integrating real hardware, designing and assembling test rigs, commissioning systems safely, diagnosing faults, and providing clear technical feedback into the wider engineering organisation. While battery assembly experience is advantageous, the primary focus of the role is on inverter systems, grid interfaces, and electrical system integration.  

Responsibilities

Prototype Build & Integration 

• Build, assemble, and integrate low-volume prototype systems, including inverter-based and grid-connected energy systems 

• Carry out mechanical and electrical assembly of prototype hardware, enclosures, sub-assemblies, and wiring looms 

• Support battery module and pack integration where required, including mechanical assembly, electrical connections, and instrumentation 

• Translate schematics, CAD models, and design intent into fully functional prototype hardware 

Test Rig Design & Commissioning 

• Design, plan, and build bespoke test rigs to support functional, performance, and validation testing 

• Commission electrical systems safely, including power-up sequences, interlocks, and protection systems 

• Configure and connect test equipment such as power supplies, loads, measurement equipment, and data acquisition systems 

• Support inverter testing, and system-level validation activities 

Testing, Fault Finding & Debug 

• Execute functional, electrical, thermal, and integration testing on prototype systems 

• Diagnose and troubleshoot electrical, mechanical, and system-level faults 

• Work methodically through issues, proposing and implementing practical solutions 

• Capture test results, observations, and build feedback to inform design improvements 

Collaboration & Engineering Feedback 

• Work closely with electrical, mechanical, firmware, and systems engineers to resolve integration challenges 

• Provide hands-on feedback into design for manufacture, assembly, serviceability, and testability 

• Support early development builds through to validation and pre-production activities 

• Contribute to prototype build schedules and development planning 

Process, Safety & Continuous Improvement 

• Develop and maintain build instructions, test procedures, and standard operating procedures 

• Ensure compliance with laboratory safety standards, electrical safety practices, and risk assessments 

• Maintain a clean, organised, and professional prototype build and test environment 

• Continuously improve prototype build efficiency, robustness, and repeatability 

Requirements

Technical Background 

• Electrically biased engineer/technician with strong practical experience in real hardware build and integration 

• Competent in mechanical assembly, including fastening, tolerancing, enclosure build, and hands-on fabrication 

• Confident working with schematics, wiring diagrams, and basic mechanical drawings 

Practical Experience 

• Proven experience building and commissioning prototype or low-volume systems 

• Experience with inverters, power conversion systems, or grid-connected equipment 

• Experience designing and assembling test rigs or experimental setups 

• Strong fault-finding and debugging capability across electrical and mechanical domains 

• Comfortable using hand tools, electrical tools, and standard workshop equipment 

• Battery assembly experience (cell, module, or pack level) is advantageous but not essential 

• Exposure to high-voltage or high-power systems is beneficial 

Qualifications 

• Apprenticeship and/or Degree in Electrical Engineering, Electronic Engineering, Mechanical Engineering, or a related discipline 

• Equivalent practical, hands-on industry experience will be considered 

• Evidence of hands-on engineering outside formal employment (hobby projects, vehicle builds, electronics projects, etc.) is strongly valued