Senior Staff R&D Mechanical Engineer (Medtech)

Location: London, GB-ENG, GB; London HQ; onsite

Company

hirify.global develops wearable biosensing technology that accesses bodily information painlessly, in real time, and affordably.

What you will do

• Own experimental and analytical workstreams supporting wearable sensor product development, including materials testing, subsystem modeling, and component interaction simulation.
• Lead root cause analyses of failure modes and implement engineering solutions.
• Define best practices, statistical analysis methods, modeling approaches, and SOPs for experimental work.
• Select, evaluate, and qualify test equipment; design fixtures and prototypes where needed.
• Collaborate with Product Engineering, Biomaterials, Data Science, and Clinical teams on bench testing, verification, theoretical analysis, and internal clinical trials.
• Communicate technical recommendations to leadership and mentor junior engineers.

Requirements

• Master’s or PhD in mechanical engineering or a closely related field.
• 6+ years of hands-on experimental R&D experience, including relevant industry experience.
• Track record of leading technical workstreams from open questions to clear outcomes.
• Deep expertise in experimental design and a good understanding of statistical approaches.
• Strong engineering fundamentals and experience with mechanical and materials testing.
• Confidence designing test fixtures and prototypes using CAD, 3D printing, and machining.
• Fluent data analysis with Python, MATLAB, Minitab, JMP, or similar tools.
• Sound engineering judgment, mature risk management, and the ability to balance rapid experiments with rigorous, documented development.
• Ability to fill experience gaps through research, continuous learning, and exposure to new engineering areas.

Nice to have

• Medical device development experience, including ISO 13485, design controls, or verification testing.
• Simulation software experience such as FEA or CFD with ANSYS, COMSOL, Abaqus, or similar.
• Tolerance analysis experience.
• Experience in a fast-paced engineering startup or agile workplace.
• Specialist expertise in polymer science, soft materials simulation, or microfabrication.
• Experience leading engineering teams or projects.
• Experience setting up a lab or specifying capital equipment.

Culture & Benefits

• Full-time, onsite work at the London headquarters.
• R&D culture centered on creativity, rigor, technical ownership, and documented engineering development.
• Opportunity to act as a technical authority, mentor engineers, and potentially be considered for a Team Lead role.