Senior Mechanical Engineer

Recycleye
London
A little bit about us

At Recycleye, we're transforming recycling through advanced AI and automation. Our technology enables waste management companies to recover more material, more efficiently - turning waste into valuable resource.

Since launching in 2019, we've scaled rapidly, deploying our AI-powered sorting systems across Europe and the US. But the challenge remains enormous - globally, only 9% of plastic waste is recycled.

Our systems operate in harsh industrial environments, at high throughput, and under demanding reliability requirements. Solving these challenges requires thoughtful, robust mechanical engineering - and that's where you come in.

Why join Recycleye?

This is a rare opportunity to join a scaling hardware company at the point where strong mechanical engineering will make a huge impact.

You won't just design parts - you'll help shape systems, define engineering standards, and build the foundations for scalable hardware deployed globally.

We offer:
  • High ownership and autonomy
  • Fast-paced scale-up environment with real engineering challenges
  • Opportunity to shape processes, standards, and best practices
  • Exposure to full product lifecycle and customer deployments
  • Hybrid working (typically 4 days in Stratford office, 1 remote)
The opportunity

We're looking for a Mechanical Engineer with 7+ years of experience to join our Production team and be the go-to mechanical engineer for Quantisort 2.0, our next-generation optical sorting platform.

This is primarily an office-first, hands-on role. You'll support PMs and integrators with Quantisort projects, resolve technical challenges, and drive continuous improvements of performance, reliability, and scalability.

Responsibilities Overview

Quantisort 2.0 Product Ownership
  • Act as the mechanical owner for Quantisort 2.0, driving the transition from configurable solution to standardised, off-the-shelf product
  • Improve repeatability of third-party integration
  • Drive product maturity and improve robustness and serviceability
  • Develop scalable subassemblies to work for any deployment without bespoke engineering
  • Work cross-functionally with software, hardware, operations, and production teams
  • Travel to customer sites for installations and troubleshooting across Europe (once per month)
  • Lead completion of the CE marking process for Quantisort 2.0, working cross-functionally to ensure compliance
Production, Manufacturing & Supplier Collaboration
  • Mechanical design (3D CAD assemblies, 2D engineering drawings for fabrication, etc) to help create solutions and retrofit our technology into our client's facilities across Europe.
  • Create installation guidelines, compliance matrices for integrators to adhere to, enabling our product to remain standard.
  • Supporting all stages of the project lifecycle e.g. sales scoping, client layout, build, FAT, install, SAT, commissioning, after-care.
  • Optimise designs for manufacturability, assembly, and integration (DFM/DFA)
  • Optimise build/FAT processes through tooling, testing jigs, process, and design optimisation.
  • Reduce part count, simplify assemblies
  • Work with suppliers and fabricators to improve manufacturability and sourcing
  • Play a role in transitioning the production team to an ERP system
  • Lead value engineering and cost reduction initiatives
  • Improve installation efficiency and build processes
Engineering Process & Best Practices
  • Improve documentation, version control, and release processes
  • Drive engineering standards and best practices
  • Mentor junior engineers and contribute to technical reviews
Requirements
  • Degree in Mechanical Engineering, or General Engineering with mechanical specialisation
  • 7+ years of mechanical engineering experience delivering industrial hardware at scale
  • Proven ability to identify and implement process improvements
  • Experience working in fast-paced, iterative engineering environments
  • Highly confident using Solidworks and PDM and producing drawings for manufacture.
  • Strong systems-level thinking and problem-solving ability
  • Solid understanding of manufacturing processes (fabrication, sheet metal, machining, assembly)
  • Experience improving products in production or field-deployed environments
  • Hands-on attitude: you are happy to go and sort out problems at client locations if need be or to assemble one of our products and do some troubleshooting when necessary.
  • Strong communication skills and cross-functional collaboration
  • Excellent skills in communicating technical information clearly to team members and key stakeholders.
It's a bonus if you have

  • SolidWorks certification (CSWP/CSWE), particularly sheet metal design
  • Experience with industrial machinery, automation, or robotics
  • Experience working on deployed customer equipment
  • Experience scaling hardware from prototype to production
  • Experience with pneumatics, conveyors, or material handling systems
  • Startup or scale-up experience
  • Experience mentoring engineers or leading technical initiatives
  • A keen interest in solving the problems within the recycling industry.
Even if you don't tick every box listed above but are motivated by our work and believe you can make a difference on our team, we'd really love to hear from you - so please do apply and drop us a note about what you bring!

We are particularly interested in hearing from you if your background enables you to bring a different perspective to our team.

Benefits
  • An excellent salary that's both equitable and reviewed regularly
  • Progression: we are growing rapidly and excited for you to make an impact as we do so.
  • Unlimited holiday.
  • A welcoming and inclusive team environment with monthly company-wide socials.
  • Plenty of opportunities for training and personal development
  • Healthcare coverage - Vitality is available from your very first day!
Posted 2026-04-12

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