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Design And Development Engineer

Job in Newton Aycliffe, Durham County, DL5, England, UK
Listing for: Quanex
Full Time position
Listed on 2026-05-15
Job specializations:
  • Engineering
    Product Engineer, Manufacturing Engineer, Mechanical Engineer, Materials Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 GBP Yearly GBP 80000.00 100000.00 YEAR
Job Description & How to Apply Below

This position has responsibility for the development and design of sealing systems for new and existing seal products for building sector.

Main Tasks & Responsibilities
  • Design solutions for new products development within the given framework of all on site development activities.
  • Provide expert assistance on thermoplastic extrusion. This includes to promote the technology and performing specific project responsibilities.
  • Lead trials, mainly in extrusion, in support of customers and internal development works, creating prototypes, analysing test data and document results in test reports.
  • Foster strong collaboration with cross-functional teams to ensure integration of innovation initiatives and product development process.
  • Act as project leader on new product development collaborating with cross-functional teams and following new product development from concept to production release.
  • Staying up to date with advancements in material technology and industry trends and incorporating new technologies into the production process as appropriate. With the material choice proposed, able to meet our environmental, mechanical and sealing performance requirements.
  • Organise project meetings, define project deliverables, monitor timelines and resources whilst reporting and challenging deviations.
  • To validate new designs, processes and materials through testing, experimentation and evaluation.
  • Define product functional analysis (based on standards) to translate customer specifications and internal requirements into clear product performance criteria.
  • Produce written reports and make presentations to the internal team and customers.
Key Skills
  • Bachelor’s or master’s degree or equivalent in polymer engineering, materials science, or a related field.
  • Strong understanding of polymer science and technology, with a focus on thermoplastic elastomers extrusion processes.
  • Proven experience in the plastics industry and time served in an Engineering discipline.
  • Project Management, capacity to follow the innovative projects and new projects development request.
  • Demonstrate a spirit of innovation, a willingness to suggest and the ability to support the implementation of modifications of existing equipment and processes.
  • Flexibility in work assignments to accommodate group and personal goals.
  • Proactive in learning about new and existing technologies.
  • Strong design and prototyping skills, including experience with computer-aided design (CAD) software.
  • An awareness of the environmental impact of design ideas.
About Us

We are not just another manufacturing company; we are part of something bigger!

We are Quanex, a global, publicly traded manufacturing company serving OEMs in the fenestration, hardware, cabinetry, solar, refrigeration, security, and outdoor products markets.

Our mission is to positively impact our customers, employees and shareholders and put them at the centre of everything we do, through innovation technology and best-in-class customer service.

Health & Safety Responsibilities

At Quanex, the health and safety of our employees are our top priorities. We are committed to providing a safe and supportive working environment by adhering to the highest safety standards and regulations. Through comprehensive training, regular safety checks, and open communication, we ensure that every team member feels confident and protected while performing their duties. We continuously strive to minimise risks, promote well-being, and encourage a culture of safety across all levels of our organisation.

Join us and be part of a team where your safety is as important as your success.

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