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Senior Designer

Criticalmass

San Jose, Costa Rica (San Jose) Remote permanent

Posted: December 3, 2025

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Job Description

Senior Designer

JOB PURPOSE

The Senior Designer is a master of her/his design craft, and is responsible for the execution of complex visual design deliverables and under the Design Lead supervision, leads the successful implementation of design solutions for marketing/communication campaigns and digital experiences that benefit people and clients. By creating design deliverables and solutions that align strategic direction and user needs, providing support and guidance to other team members, having passion for design and keeping high standards, the Senior Designer plays a key role on project success, client satisfaction and strengthening our creative culture.

MAIN RESPONSIBILITIES / DUTIES

· Designs solutions that meet or exceed strategic objectives in a highly collaborative environment.

· Creates storyboards, mood-boards, initial visual concepts, design layouts, functional design solutions, site grids and UI demos to lead design project development.

· Leads visual design projects with Design Lead supervision in the following areas: Print, Marketing Campaign, Social Media, Motion and Illustration.

· Understands, analyses, and responds to client briefs and requests.

· Works closely with development teams to ensure that design specifications are implemented.

· Provides reliable quality assurance on all creative deliverables. Anticipates issues and flags situations that might impact quality or delivery success.

· Actively participates in calls and client meetings, handles IM and e-mail communication. Presents work during client presentations.

· Actively participates in strategic brainstorming, design thinking and collaboration sessions, and creative brief development.

· Thinks creatively and justifies concepts to clients and team members.

· Understands and applies the design thinking cycle to projects when is appropriate.

· Balances strategic development with client objectives.


· Builds and maintains a rapport with department team members, project managers and other disciplines key team members.

· Stays up to date with recent design trends and new technologies.

· Drives design inspiration and learning among team members.

REQUIREMENTS / QUALIFICATIONS

ACADEMIC BACKGROUND

· Bachelor's degree in Graphic Design, Visual Design Advertising Design or related field or equivalent experience in advertising and/or digital agencies or startups.

REQUIRED EXPERIENCE

· 4+ yrs. experience in advertising agencies, digital agencies, design agencies, and/or startups.

· Strong design portfolio including pieces for international clients.

· Experience in at least 3 of these areas: print, visual design, digital marketing, social media, illustration and motion areas, preferably for international clients and global brands.

· Solid understanding of interactivity and animation principles and best practices.

· Solid understanding of visual design principles, trends, systems, and systems.

· Solid understanding of UX principles, trends and theory.

· Understanding of digital marketing, online advertising and business strategy concepts.

· Experience creating user interfaces for digital products.

· Extensive knowledge of Photoshop, Illustrator, InDesign, and Figma.

· Solid knowledge of Keynote, PowerPoint, After Effects.

· Knowledge of Adobe Animate, HTML5 animation, Zeplin, Abstract, Principle.

· Knowledge of productivity tools: MS Office (Word, Excel, Outlook), remote collaboration tools (Slack, Zoom, Drive, Box, Paper, Evernote) and workflow management tools (Jira, Trello, Asana, Basecamp).

· Knowledge of design systems frameworks such as Material Design and Human Interface Guidelines.

· Understanding of CMS and frameworks such as: Bootstrap, Foundation, Wordpress, AEM or any others.

· Comfortable on the iOS environment.

LANGUAGES

· Advanced English Proficiency (B2+/C1 reading, writing, and conversation).

SKILLS / COMPETENCIES

Attention to detail: Achieving thoroughness and accuracy when accomplishing a task.

· Ensures consistency and pixel perfection on all deliverables.

· Able to perform its own creative QA process.

· Paying careful attention and diligence to small details and ensuring even the smallest requirements/specs are met.

Nimble learning: Actively learning through experimentation when tackling new problems, using both successes and failures as learning fodder.

· Learns quickly when facing new situations.

· Experiments to find new solutions.

· Takes on the challenge of unfamiliar tasks.

· Extracts lessons learned from failures and mistakes.

Manages complexity: Making sense of complex, high quantity, and sometimes contradictory information to effectively solve problems.

· Asks the right questions to accurately analyze situations.

· Acquires data from multiple and diverse sources when solving problems.

· Uncovers root causes to difficult problems.

· Evaluates pros and cons, risks and benefits of different solution options.

Drives results: Consistently achieving results, even under tough circumstances.

· Has a strong bottom-line orientation.

· Persists in accomplishing objectives despite obstacles and setbacks.

· Has a track record of exceeding goals successfully.

· Pushes self and helps others achieve results.

Communicates effectively: Developing and delivering multi-mode communications that convey a clear understanding of the unique needs of different audiences.

· Is effective in a variety of communication settings: one-on-one, small and large groups, or among diverse styles and position levels.

· Attentively listens to others.

· Adjusts to fit the audience and the message.

· Encourages the open expression of diverse ideas and opinions.

SPECIFIC CERTIFICATIONS/SPECIALTIES/COURSEWORK

· Desirable: Any certification, course or training on UX, UI, visual design, design systems, marketing campaign, business and/or design thinking.

WORK ENVIRONMENT DEMANDS

· This job operates in a professional office environment. This role routinely uses standard office equipment such as computers, smartphones, photocopiers, and filing cabinets.

· May be requested to work overtime and/ or to travel for special projects.

· Extensive use of monitor, keyboard, mouse or Wacom tablet.

What We Offer

• Maternity and parental leave extra days

• Competitive benefits packages

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

• Access to online services for families and new parents

• End-of-year closure days (not deducted from vacation balance)

• Diversity and Inclusion Board with 12 affinity groups

• Internal learning and development programs

• Enterprise-wide employee discounts

• And more…

At Critical Mass, we value our employees and offer competitive compensation and benefits packages. If you’re looking for a challenging and rewarding opportunity to make a significant impact on the lives of our employees, we encourage you to apply for this exciting position today!

Critical Mass is an equal opportunity employer.

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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