Job Description

Marketing Science Analyst (Test & Learn)

San Jose, Costa Rica

As a Marketing Science Analyst, your curiosity never ends. The next question is always on your mind, helping you to understand how marketing science fits in the big picture of a project. You bring in 1 to 3 years of experience, owning marketing science deliverables across a broad range of initiatives, with a strong focus on in-market testing and evaluation. You understand the nature and purpose of the main Digital marketing channels, enjoy collaborating with others, and are able to communicate clearly and effectively.

You will:

• Support the design and execution of Test & Learn programs, including hypothesis development, experimental design, test setup, and statistical evaluation of results.
• Assist in the ideation, development, and execution of measurement frameworks, including recommendations on experiment type (A/B/n, matched control, pre/post, geolocation, and incrementality studies).
• Translate complex test results into clear and actionable insights through storytelling and data visualization.
• Gather marketing data across paid and owned channels to analyze campaign performances, understand user behaviors, and report findings.
• Collaborate with internal teams and partner agencies to deliver cohesive, insight-driven recommendations to internal stakeholders and clients.
• Occasionally support senior colleagues with analytics material for new business pitches and request for proposals.
• Build and maintain reusable analysis templates and code (SQL, R, or Python) to streamline and scale measurement.

You have:

• Top-notch communication and collaboration skills.
• Strong attention to detail and comfort managing complex, fast-moving testing programs.
• Hands-on experience with common digital testing scenarios (e.g., creative tests, audience/targeting tests, budget allocation tests, or landing page tests) OR formal education including coursework in experimental design and statistical evaluation (e.g., identifying groups, controlling variables, calculating statistical significance).
• Familiarity with statistical analysis techniques and quantitative methods.
• Comfort working with imperfect, observational data and applying appropriate techniques for bias reduction to derive credible directional insights.
• Strong understanding of digital media channels (e.g.: Social, SEM, SEO, OLV, etc.) including how each one works and how they interact with one another.
• Ability to efficiently manage multiple projects at the same time, proactively communicating needs, roadblocks, and statuses to the necessary people.

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
• 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!

The Talent Team at Critical Mass is focused on ensuring we provide the best training, onboarding, and employee experience possible! Our new hires & employees are the future of our organization, and we want to set you up for long-term success. In an effort to do so, we expect our team to work from an office a minimum of 3 days a week

The ask stems from our want to:

Strengthen opportunity for continuous learning
Improve collaboration and team relationships.
Increase employee engagement

This work model balances the need for individual flexibility while maintaining the relentless customer focus we provide at CM. We understand that not everyone may feel comfortable with this expectation, so we ask that you please let us know immediately if there are any concerns so we can help navigate accordingly.

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.comand 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