Do you want to join our rockstar team of innovators and make a REAL impact in the sustainability space?  
Circu Li-ion is driving the green revolution by reusing batteries through our cutting-edge automated battery disassembly lines. We offer this technology as a service model to recyclers, micromobility & automotive OEMs. Our vision is to deploy the battery disassembly lines in a hub and spoke model around the globe to disassemble Li-ion battery packs into reusable Li-ion cells or modules, minimizing waste and maximizing sustainability. By upcycling these cells and modules into second-life CO2-neutral battery packs, we are revolutionizing the way batteries are reused.
The Role
 As a Senior Engineering Technician at Circu Li-ion, you will be a hands-on expert assembling, testing, and troubleshooting complex mechanical and electrical systems for our cutting-edge battery disassembly technology. With meticulous attention to detail and proficiency in hand tools, power tools, and precision instruments, you’ll transform designs into functional prototypes and production-ready machinery. 
Working closely with engineers and cross-functional teams, you’ll debug systems, optimize performance, and ensure every component meets our high standards of quality and sustainability.  
This role is perfect for a skilled technician who thrives in a fast-paced, team-oriented environment and takes pride in turning innovative ideas into tangible, world-changing solutions.
Your Responsibilities
 

• Lead hands-on prototype builds, mechanical assemblies, and system integrations for custom disassembly machinery and tools.
• Translate complex mechanical designs and drawings into working assemblies with high precision and craftsmanship.
• Partner closely with mechanical and controls engineers to debug, optimize, and iterate on early-stage systems.
• Provide DFM/DFA (Design for Manufacturing and Assembly) feedback during product development cycles.
• Design and fabricate jigs, fixtures, and prototype components using CNC, manual machining, and fabrication tools.
• Manage the workshop environment, including equipment, tools, materials, and safety compliance.
• Own the prototyping bill of materials (BOM), vendor sourcing, and custom part ordering in collaboration with engineering and procurement.
• Assist with the integration of actuators, motors, sensors, pneumatics, and control hardware into working machines.
• Support first-article testing, validation, and troubleshooting of full machines and robotic cells.
• Mentor junior technicians and help standardize best practices across the prototyping and assembly team.

Required Skills: 

• 6+ years of experience in hands-on mechanical prototyping, machine assembly, or special-purpose machinery development.
• Deep mechanical knowledge and experience working from CAD (Inventor, Fusion 360, or similar) and complex drawings.
• Skilled in fabrication and machining: CNC milling, turning, manual tools, welding (preferred), and general shop equipment.
• Strong understanding of tolerancing, fasteners, materials, and mechanical design principles.
• Experience integrating mechanical systems with pneumatics, actuators, or automation components.
• Ability to work independently in a fast-paced, iterative R&D environment with minimal supervision.
• Excellent problem-solving skills and a proactive, solution-oriented mindset.
• Strong documentation habits and familiarity with version-controlled build processes.

 
Preferred skills: 

• Experience with robotic tooling, high-voltage component handling.
• Understanding of electromechanical systems, sensors, wiring, and basic control integration.
• Familiarity with rapid prototyping tools (3D printing, laser cutting, etc.) and digital fabrication workflows.
• Exposure to lean product development or agile, multi-disciplinary engineering environments.

• High degree of collaboration and autonomy while working with a group of highly skilled, committed and supportive peers
• Transparent culture with flat hierarchy where everyone of us is highly valued
• Development of your professional skills and knowledge by taking ownership of challenging tasks and responsibilities, supported by Leads and peers
• “Getting things done” attitude, and access to cutting edge technologies
• A guaranteed steep continuous learning curve from day one
• Complementary Health Insurance

We want to hear from you 
If we ignited your interest and you want to be part of the green energy revolution, we look forward to hearing from you. Apply now and let us know why you’re the one for the job! We encourage everyone to apply and grow with us even if you may not tick all the boxes of the requirements, we are happy to hear about the value you can add to the team. We are looking forward to your application!