UX/UI Designer

About the role

We are expanding our Product Management team and are looking for a UX/UI Designer to join our team of systems engineers and help shape the user experience of complex medical software for radiation therapy.

As part of the team, you will complement the systems engineers’ expertise in defining product functionality, collecting and documenting user needs, specifying clinical workflows, and preparing initial concepts and wireframes. You will bring strong interaction and visual-design skills, transforming complex clinical workflows and requirements into clear, intuitive, and consistent user interfaces.

This is an opportunity to help shape next-generation software from the ground up, working alongside world-class clinical partners at some of the most respected cancer centers and hospitals worldwide.

Key tasks and responsibilities

Create UX/UI concepts, wireframes, high-fidelity mockups, and interactive prototypes for complex medical software.
Transform user needs, software requirements, workflows, and initial concepts into effective interface designs.
Collaborate with systems engineers, software developers, testers, clinical experts, product managers, and other stakeholders.
Participate in workshops and discussions with customers and internal stakeholders to understand user needs and workflows.
Maintain, extend, and improve the existing design system.
Define reusable components, interaction patterns, layouts, and visual guidelines.
Ensure consistency across the product while considering complex clinical workflows and safety-related information.
Prepare design specifications and other documentation needed for implementation and developer handoff.
Review implemented interfaces and help ensure that they conform to the approved designs.
Contribute to usability evaluations and the continuous improvement of the user experience.

Required qualifications and skills

3+ years of professional experience designing user interfaces and experiences for software products.
High proficiency in Figma, Sketch, or comparable interface-design and prototyping tools.
Strong interaction and visual-design skills, with a solid understanding of layout, typography, visual hierarchy, and information presentation.
Experience creating, maintaining, and evolving a design system for a complex software product.
Understanding of software-development processes and comfort collaborating with developers and other technical and non-technical stakeholders.
Ability to collect, document, and translate structured requirements and workflow descriptions into intuitive interface solutions.
Strong communication skills and an open, constructive approach to discussion and teamwork.
Fluency in spoken and written English.

Bonus points if you have

Experience with healthcare, medical devices, or other safety-critical or regulated software.
Experience with usability engineering or human-factors activities.
Familiarity with regulations and standards applicable to medical software.
Experience with agile software-development processes and tools such as Jira.
Knowledge of front-end development principles or previous experience collaborating closely with software developers.
Experience with Adobe Creative Cloud tools such as Illustrator, Photoshop, or InDesign.

What we offer

Employment contract for an indefinite period with a six-month probationary period.
A work environment with flexible working hours and a hybrid work model.
Plenty of personal and professional growth opportunities combined with a competitive and periodically updated salary tailored to your skills, experiences, and results.
Company-funded licenses for leading AI tools (Claude Code).
Interesting work full of challenges in an international working environment.
Opportunities to work abroad.
High-impact learning culture: regular in-house and external training sessions and a team of international professionals eager to help you grow.
Many recreational after-work activities, additional health insurance (Specialists+), unlimited coffee, soft drinks, fruit, and other well-being goodies.
Cosylab events (Teambuilding, New Year’s Party, Picnic … ).

Why join Cosylab?

We are the leading software solutions provider for the world’s most complex, precise, and advanced systems, such as particle accelerators, large telescopes, fusion reactors, innovative medical devices, and cancer treatment systems. Our technology enables organizations to make scientific discoveries, offer the most cutting-edge cancer treatments, innovate in healthcare, and introduce clean fusion energy to future energy markets.

Working at Cosylab is a great opportunity to discover genuine teamwork and collaborate with experts from the world’s most important research projects. We value and strive to achieve good interpersonal relationships and try to ensure the pleasant well-being of all our employees. We are friendly, proud to work together, and able to develop just about any solution we put our minds to.

Cosylab culture

Our values

We offer the best solutions for ambitious businesses.

Think bold

We deliver exceptional solutions through courageous thinking, open communication and the drive to continuously improve.

Be modest

We set our egos aside in actively listening, respecting one another, and embracing the diversity of experience and perspective across the company.

Work smart

We know we get more accomplished by working together, being accountable, focusing our efforts and going the extra mile.

Enjoy life

We prioritize balance and positivity, nurturing personal wellness and celebrating successes.

Do good

We support one another and are passionate about solving the difficult problems that ultimately help make the world a better place.

Discover our work environment

Apply for UX/UI Designer by Thursday, October 15, 2025

Please fill in the application form and upload your English CV, motivational letter, and a portfolio of your work if you have one.

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Please fill in the application form and upload your English CV, motivational letter and other relevant documents.

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