About the role

As Principal Biomechanical Engineer at WearOptimo in Brisbane, you will lead the design, testing and validation of the biomechanical aspects of Microwearable™ Hydration sensors. You will combine biomechanics, materials science and biomedical engineering to optimise the device–skin interface, ensuring comfort, biocompatibility and accurate biosignal capture. Working as a hands-on principal individual contributor, you will take biomechanical designs from concept through verification and clinical evaluation into manufacture, while providing technical guidance across multidisciplinary projects.

Key responsibilities

- Lead the design and development of the device–skin interface to ensure secure adhesion, reliable skin engagement of microelectrodes, comfort and optimal signal transmission.

- Define biomechanical performance requirements and acceptance criteria, balancing mechanical, biological and electrical performance.

- Design and conduct mechanical engagement testing using ex vivo animal models and subsequent histology analysis.

- Plan and participate in on-body hydration clinical trials, contributing to study design, device preparation and data analysis.

- Design for biocompatibility, product safety and relevant regulatory standards.

- Support the transfer of biomechanical designs, assembly processes and test methods into manufacturing and scale-up.

- Plan and deliver biomechanical work packages to agreed scope, milestones and quality standards.

- Collaborate with electrical, embedded systems, manufacturing, AI and clinical teams to share results, troubleshoot issues and support product development milestones.





- Provide technical guidance and design review to engineers and scientists on biomechanical design, experimental design and test methods.

- Develop test plans, fixtures and automated test systems where appropriate, and characterise the sensitivity, reliability and variability of device–skin interfaces and sensor systems.

- Analyse results, document findings and drive iterative design improvements.

- Contribute to risk management, design controls, technical documentation and compliance with applicable regulations, standards and safety requirements.

- Coordinate with vendors, test laboratories, clinical research partners and collaborators to support technical delivery, validation and manufacturing readiness.

- Maintain accurate and traceable design files, test protocols, test reports and technical documentation.

- Use AI and LLM tools in accordance with company policies while maintaining accountability for work produced and protecting company intellectual property.

- Follow health, safety, environmental, quality management and regulatory requirements, and contribute to continuous improvement activities.

What we're looking for

Essential:

- Bachelor’s degree or higher in Biomechanical, Biomedical, or Mechanical Engineering, or a closely related discipline.

- Minimum of 8 years’ industry or research experience in biomechanical or medical device engineering,



with a proven track record of taking designs from concept through verification and into clinical use or production.

- Demonstrated hands-on laboratory expertise in mechanical testing, data analysis, and validation of biomedical or wearable devices.

- Robust analytical skills, including experimental design and statistical analysis, with experience using statistical software or programming to model and interpret test data.

- Experience across the product development lifecycle, from concept through to manufacturing and launch, working within a cross-functional team.

Desirable:

- A PhD in biomechanics, biomedical engineering, or a related field.

- Experience designing and validating skin-interfacing or minimally invasive devices, such as microneedles, microstructure arrays, or wearable patches, including skin mechanics and adhesion.

- Familiarity with ex vivo animal model testing, histology analysis, and in vitro electrical testing.

- Experience with wearable sensor development or clinical trial support.

- Experience with biocompatibility evaluation and relevant standards (e.g., ISO 10993).

- Experience with CAD and finite element analysis for mechanical design and simulation.

- Knowledge of quality management systems (e.g., ISO 13485) and risk management frameworks (e.g., ISO 14971).

- Experience managing external relationships, such as with vendors, contract manufacturers, and research partners, including manufacturing transfer or product scale-up.

- Contributions to IP, publications, or collaborative research projects.

- Previous experience in a high-performing start-up or R&D; environment.

📌 Principal Biomechanical Engineer (South Brisbane)
🏢 WearOptimo
📍 South Brisbane