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User Experience Designer

Criticalmass

San Jose, Costa Rica (San Jose) permanent

Posted: February 25, 2026

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Quick Summary

We're looking for a user experience designer to create a stellar user experience for a digital product with input from senior creatives. This role requires proficiency in designing with independence and relationship building.

Job Description

UX Designer

Output of this role is to apply research and analysis and design elements of a stellar user experience for digital products and services with input from senior creatives. Focused on task delivery within a project schedule.

Career Development is typically provided by Associate Director of UX or Lead UX but can be adapted to suit an account and/or office location.

Nature of this role of role is that of a ‘contributor’: here to design with proficiency that requires oversight.

Skills Developed

• More independence in completing a task

• Relationship building within discipline

• Go from communicating thought process to communicating design intent in diagrammatic forms

• Produce a variety of solutions for a given problem

• Proactively communicate within and integrate into the workflow or production process

• Articulate ideas supported by research and analysis

• Passion is fueled displaying empathy towards the customer and the client

• Balance key deliverables within a project and its delivery schedule

• Gain efficiency and technical skills in a variety of tools practices and processes

• Gain confidence in crafting user experiences Activities Performed

• Conduct research

• Analyze data and research for insights

• Organize content

• Develop information architectures

• Document scenarios and use cases

• Deliver detailed wireframes and functional specifications

• Produce prototypes

• Act upon client and user feedback

What We Offer:


Global maternity and parental leave


Work-life ballance


Competitive benefits packages

• Vacation, compassionate leave, wellness days, and flex days

• Access to online services for families and new parents

• Diversity and Inclusion Board with 13 affinity groups

• Internal learning and development programs


Asociación Solidarista - You can join voluntarily

Critical Mass is an equal opportunity employer.

Critical Mass uses artificial intelligence in our recruitment process to enhance job postings, filter keywords during the review of prospective candidates, and, in some cases, transcribe interviews with our recruiters. Human review remains central to the process, and all hiring decisions are ultimately made by our team.

The Critical Mass Talent Acquisition team will only communicate from email addresses that use the URLs criticalmass.com, omc.com and us.greenhouse-mail.io. We will not use apps such as Facebook Messenger, WhatsApp, or Google Hangouts for communicating with you. We will never ask you to send us money, technology, or anything else to work for our company. If you believe you are the victim of a scam, please review your local government consumer protections guidance and reach out to them directly.

If U.S. based: https://www.consumer.ftc.gov/articles/job-scams#avoid
If Canada based: https://www.canada.ca/en/services/finance/consumer-affairs.html
If U.K. based: https://www.gov.uk/consumer-protection-rights
If Costa Rica based: https://www.consumo.go.cr/educacion_consumidor/consejos_practicos.aspx

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