Usability Engineer


Clue helps everyone who menstruates to understand their bodies—and to be empowered by that knowledge. Our vision is to enable women and people with cycles to live in tune with their biology, not in spite of it.

Founded by Ida Tin, Clue is a VC backed startup based in Berlin helping over 12 million people each month get insights into their reproductive health via our Android and iOS Apps. We collaborate with world-leading universities and institutes to advance female health research with our dataset, and deliver essential education about health, periods, and sex via our website,

At Clue we embrace a culture that values everyones’ uniqueness and lets them flourish as an individual. We are constantly working on creating an environment which provides equal opportunities, regardless of your ethnicity, age, gender, sexual orientation, disability, race, religion, and any other diverse backgrounds. As a part of our team, your unique set of talents will always be appreciated and we’re committed to provide them with a nurturing and safe environment.


As a Usability / Human Factors Engineer, you will work on our regulated medical devices and ensure our user’s safety. In collaboration with our UX Researcher and other teams, you will lead the efforts along the product’s life cycle according to the IEC 62366. Moreover, you bring the users’ perspective and needs to the company and everything we do. Main responsibilities include:

  • Work on the implementation of human factors/usability engineering and ensure compliance with the given regulations in the US and EU for our medical device(s)
  • Plan, perform and document Human Factors/Usability Engineering efforts, incl. defining user profiles, tasks analysis, formative and summative evaluations
  • Ensure that the usability engineering file is complete and ready for audits 
  • Work closely with our Regulatory and Quality Team to ensure a strong QMS and contribute to risk management
  • Collaborate closely with the Design and Product Team in developing easy to use products that delight users
  • Identify user needs, problems and requirements from early on design exploration to optimization
  • Contribute to improving our processes around human factors/usability engineering and human-centered design
  • Communicate user insights and usability engineering to the company
  • Support the current redesign of the usability engineering file
  • Do ongoing usability engineering in product development


  • Experience in human factors/usability engineering in the development of medical devices, having strong knowledge in human-centered design, cognitive psychology and human factors 
  • Ability to lead usability engineering activities for a software medical device according to IEC 62366, FDA and MHRA (creating documentation and following standard guidelines)
  • Experience in performing a variety of research methodologies (quantitative and qualitative) 
  • Detail oriented, collaborative, and able to efficiently communicate with cross-functional teams 
  • Passionate about empowering women and people with cycles
  • Interest or knowledge in how social inclusion can be considered in UX research and design (e.g. inclusive design, accessibility)


We believe personal growth is essential for professional growth which is why we offer all the standard benefits, plus some that are uniquely Clue.

  • Care for your body and mind with free weekly yoga, and a free on-site therapist.
  • Learn and grow with a professional and personal development budget.
  • Work your way in our child-friendly and dog-friendly office. We’ll help with relocation if you’re not already in Berlin.
  • Five weeks of paid vacation each year, a competitive salary, participation in our all-employee option pool, and the option to join the company pension plan.
  • Flex Fridays: One day per week where Cluebies can put their health & wellbeing first, stay energized and maintain a sustainable high level of productivity.

During the Covid-19 pandemic, we are working remotely from home in Berlin.