Role Overview 

The mechanical design engineer will be involved in the design, prototyping and testing of mechanical components, modules and complete systems. The role will require a creative analytical approach to design novel and elegant mechanical solutions for Refeyn’s current and next generation instruments.

They will join the growing engineering team, and will liaise with research, product and operations teams to capture requirements and translate these into technical specifications. The mechanical design engineer will take accountability and responsibility for producing 3D designs and mechanical drawings, validation/verification activities and continuous improvement of Refeyn’s product portfolio.

This can role can be either a level 4 - Mechanical Design Engineer or a level 5 - Senior Mechanical Design Engineer, depending on experience 

Key responsibilities for this role include:  

• Mechanical design engineering of key modules and features, from product concept through to customer delivery.
• Work closely with product, research and operations teams, gathering and translating requirements for specification, design, test and evaluation, delivery to production and production support.
• Interaction with critical suppliers across a range of products, materials and processes (machining, fabrication, finishing, casting, injection moulding etc)
• Apply mechanical design knowledge and proven skills to produce mechanical systems that meet user requirements, performance specifications, quality, and robustness targets. A clear understanding of all aspects of the mechanical design is critical.
• Understand, design and implement simple user interactions and ergonomics.
• Produce detailed models, design drawings, documentation and prototypes of critical modules and systems.
• Oversee testing, internal evaluation and conformance testing of mechanical assemblies.
• Produce technical documentation, assembly and installation instructions of critical modules and assemblies
• Support handover of new features/products/modules to production and addressing ECRs and NCRs in collaboration with the Operations team as part of Refeyn’s continuous improvement effort
• Take ownership of the mechanical design drawing packs for Refeyn’s product portfolio

We are ideally looking for someone with the following skills and experience:

• MEng in mechanical engineering or similar, or equivalent experience 
• Laser alignment and construction
• Systems, process engineering
• Practical electronics experience (desirable)
• Mechanical design of systems involving optics, detectors and electronics.
• Product design involving high precision optical alignment and design for manufacture.
• Expert use of mechanical engineering CAD systems (SolidWorks), tolerance analysis and thermal design
• Experience developing scientific instrumentation.
• Full cycle product development and transfer to manufacturing (desirable)
• Industrial design and ergonomic user interfaces/mechanisms
• Exposure to automated and motion systems
• Strong analytical and mathematical problem solving skills

We know there is no such thing as the perfect candidate and that there is great value in transferrable skills, so please don’t feel you have to tick all of the above boxes to apply!

Why work for Refeyn?

Compensation and core benefits

• We anticipate a base salary of £50,000 to £70,000 for this role, depending on candidate experience 
• 25 days annual leave per year in addition to bank holidays
• Up to 7% employer matched pension contribution
• Private health insurance from day one plus critical illness cover, income protection and life insurance
• Give as You Earn and Cycle to Work salary sacrifice schemes.
• Annual Company and Individual bonus scheme 

Family Friendly Benefits

Refeyn offers YellowNest Nursery Scheme to all employees once probation is passed, and new parents can benefit from up to 17 weeks fully paid maternity, adoption and shared parental leave, 4 weeks fully paid paternity leave, plus an annual allowance for emergency childcare.

Supporting your Development

All employees receive access to Linkedin Learning which offers thousands of courses to support their personal and professional development. We also run frequent training sessions on both hard and soft skills.

Creating an Engaging Culture

Refeyn supports hybrid working where the role allows and offers flexible start and finish times. We also have a subsidised weekly lunch for onsite employees and a vibrant social calendar which includes holiday parties and midsummer festivals plus an annual team budget for managers to plan team-building activities.

Values-Led 

Refeyn is committed to celebrating each other’s differences and creating a dynamic, driven and diverse culture where everyone can flourish. We are proud to have been awarded Committed Status by the Inclusive Employers Standard in 2024 and are working hard to create a safe and empowering environment for all.

We firmly believe that there is great strength in building teams with different voices, experiences, perspectives, and backgrounds so that we can continue to share the team workload and enable our customers to succeed, and we welcome applicants from all sections of society to join us on our mission to transform analytical workflows using the power of light.

Refeyn is proud to use anonymised hiring practices. Identifying information such as a candidate's name, email address, date of birth and photo will not be visible to the hiring manager when they review CVs.

• Support supplier selection, evaluation, and onboarding
• Conduct supplier audits (UK and international) and drive development activities
• Monitor supplier performance, including QBRs and quality agreements
• Define and align Critical-to-Quality (CTQ) requirements, especially during NPI
• Lead root cause analysis and manage supplier CAPA processes
• Drive continuous improvement and prevent recurring quality issues
• Ensure compliance with standards such as ISO 9001, ISO 13485, and ISO 14001

• Degree in Engineering, Quality, or related field

• Experience in manufacturing (optics or regulated industries preferred)
• Knowledge of ISO 9001 and ISO 14001 (ISO 13485 desirable)
• Skilled in problem-solving tools (8D, 5 Whys, Fishbone)
• Strong communication, negotiation, and supplier management skills
• Experience with audits and vendor quality performance measures

• Six Sigma or CQE certification
• Experience in medical, pharma, or aerospace sectors

• Right to work in the relevant country
• Willingness to travel (UK and international). Travel around 25-30% 
• Full driving licence

• We anticipate salary starting from £41,000 per annum, depending on candidate's experience 
• 25 days annual leave per year in addition to bank holidays
• Up to 7% employer matched pension contribution
• Private health insurance from day one plus critical illness cover, income protection and life insurance
• Give as You Earn and Cycle to Work salary sacrifice schemes.
• Annual Company and Individual bonus scheme 

System Test Engineer / Tooling / Python / Go / Linux /

Location: Wallingford - Oxfordshire

Permanent

At Dexory, we are transforming the warehousing and logistics industry through data intelligence.

We’re currently recruiting for a system test engineer who has experience working on internal tools used in hardware & software blended environments.

Any experience within robotics, automotive, high-tech manufacturing or similar environments would be a big plus.

Offices based in Wallingford, Oxford and due to the nature of working on software within the above areas we require a candidate who is happy being predominately on site.

Experience programming on devices also desirable.

Please apply for more information.

Responsibilities / Skills

• As the company has grown our tools have likewise grown organically over time to fit the needs of the teams, this has meant different approaches to how tools are built, maintained and used. This role brings clear ownership and consistent engineering practices to that ecosystem: unifying the toolchain, standardising behaviour and distribution, and improving maintainability so other teams can confidently adopt, extend and enjoy using the tools.
• Unifying and standardising existing tools into a coherent toolchain with consistent UX, behaviour, and quality bars.
• Building and maintaining reliable CLI tooling used on laptops for robot and fleet operations (configuration, access, modification, validation).
• Working with partner teams to deliver web UI tooling where appropriate, ensuring consistent workflows and shared interfaces.
• Establishing and improving packaging and distribution practices (e.g., Docker, GitHub Releases)
• Improving maintainability through testing, CI/CD, versioning, and clear deprecation/migration paths for legacy tools.
• Strong software engineering fundamentals, with a focus on reliability, usability, and long-term maintainability.
• Comfortable with Linux based systems and capable of working in the command line.
• Experience building internal tooling for operational workflows (commissioning, deployment, servicing, test/validation, or similar).
• Very good version control experience with Git
• Proficiency in Python and/or Go, and comfort working across a multi-language codebase (Python/Go/C++).
• Experience distributing and operating internal tools (packaging, dependency management, release workflows), ideally including Docker and GitHub Releases.
• Ability to write clear documentation and specifications so tools can be adopted and used effectively across teams and stakeholders.
• Strong debugging/problem-solving skills across tooling, systems, and hardware-adjacent workflows.

Benefits

Starting from the interview process and continuing into your career with us, you will be working by our four Operating Principles:

• Performance: High standards, outstanding results,
• Impact: Big challenges, bigger results
• Commitment: All in, every time
• One team: One mission, shared success

Joining our team and company isn't just about expertise; it's about embracing uncertainty with ambition. We're crafting world-changing solutions, fuelled by a passion to redefine what's possible. We will look for you to help create and shape the future of logistics solutions through our products, our culture and our shared vision.

You will also receive:

• Private healthcare via Bupa with 24/7 medical helpline
• Life insurance
• Income protection
• Pension: 4+% employee with option to opt into salary exchange, 5% employer
• Employee Assistance Programme - mental wellbeing, financial and legal advice/support
• 25 days holiday per year + bank holidays
• Full meals onsite in Wallingford
• Fun team events on and offsite, snacks of all kinds in the office

AAP/EEO Statement

Dexory provides equal employment opportunities to all employees and applicants for employment. It prohibits discrimination and harassment of any type without regard to race, colour, religion, age, sex, national origin, disability status, genetics, protected veteran status, or any other characteristic protected by local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.