Mechanical Product Design Engineer

Mechanical Product Design Engineer

QTech – Spray Pump & Small Machinery Innovation

Location: Remote  |  Employment Type: Full-time/Part Time  |  Salary: £350–£700 per month  |  Reports to: General Manager

Please note: this is a mechanical engineering role designing physical machines. It is not a software, UX, or digital product design role.

About QTech

QTech designs and manufactures precision spray pump machines and small machinery. We are looking for a Mechanical Product Design Engineer to drive the next generation of QTech machines – from first concept sketch through to production-ready, patent-protected products.

The Role

You will own the mechanical design and engineering of new QTech machines and improvements to our existing range. This is a hands-on engineering role covering mechanisms, fluid handling, pneumatics, drive systems, and machine structures. You will take products from concept and CAD through prototyping, testing, and manufacture, while ensuring our designs are both genuinely innovative and clear of existing patents.

Key Responsibilities

• Design and engineer new machines and improvements for the QTech range – mechanisms, pump assemblies, fluid paths, drive systems, and enclosures – from concept through to production.
• Produce detailed 3D CAD models, 2D technical drawings with tolerances/GD&T, BOMs, and manufacturing documentation.
• Develop novel, patentable mechanical design concepts that set QTech machines apart from competitors.
• Build, test, and iterate physical prototypes; validate performance, reliability, and manufacturability.
• Conduct patent and freedom-to-operate research; design around existing patents and support new patent applications for QTech innovations.
• Work with suppliers and manufacturing partners on tooling, machining, moulding, materials, and production processes.
• Collaborate with sales and management to translate customer and market needs into engineering requirements.
• Maintain design records, revision control, and compliance documentation.

Required Experience & Skills

• Proven mechanical design engineering experience, with shipped physical products or machines to show for it.
• Hands-on experience with small spray pumps (e.g. piston, diaphragm, airless), pneumatic systems, dosing/atomising systems, or comparable small machinery.
• Strong CAD skills (e.g. SolidWorks, Fusion 360, Inventor, or similar), including 3D modelling and toleranced 2D technical drawings.
• A track record of original, innovative mechanical design work – not just incremental updates.
• Experience working with patents: freedom-to-operate searches, designing around existing IP, and contributing to patent filings.
• Solid understanding of materials, tolerances, machine elements, DFM/DFA, and prototyping methods (including 3D printing and machining).
• Degree in Mechanical Engineering or equivalent practical experience.

Nice to Have

• Experience with fluid dynamics, atomisation, pneumatics, or precision dispensing.
• Familiarity with simulation/FEA tools and design validation testing.
• Named inventor on granted patents or published applications.
• Experience taking a machine through regulatory or safety certification (e.g. CE/UKCA).