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Critical Mass is hiring for a contract Sr Project Manager. This is a high-visibility contract role on a dynamic communications team creating world-class digital marketing material. You'll work on exciting projects with tight timelines, meaningful scope, and the opportunity to make an immediate impact. If you're someone who thrives when challenges are real, timelines are tight, and excellence is non-negotiable, this is the role for you.
This role is a contract role from May 4, 2026 through Sept 25, 2026.
You Will:
You Have:
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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The Art Director is responsible for conceptual development and the execution of creative deliverables. These responsibilities include creating and communicating concepts, implementing marketing strategies and developing interactive design solutions. Reporting to the Creative Director, the Art Director will work with and lead a collaborative team of designers, copywriters and production specialists. Balancing creative thinking with interpersonal skills, this person will demonstrate an ability to justify concepts to both the client and the project team.
Contract Details:
You Will:
You Have:
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
Ready to apply?
Apply to Critical MassShare this job
Critical Mass is hiring for a contract Sr Project Manager. This is a high-visibility contract role on a dynamic communications team creating world-class digital marketing material. You'll work on exciting projects with tight timelines, meaningful scope, and the opportunity to make an immediate impact. If you're someone who thrives when challenges are real, timelines are tight, and excellence is non-negotiable, this is the role for you.
This role is a contract role from May 4, 2026 through Sept 25, 2026.
You Will:
You Have:
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
Ready to apply?
Apply to Critical MassShare this job
Critical Mass is hiring for a contract Sr Project Manager. This is a high-visibility contract role on a dynamic communications team creating world-class digital marketing material. You'll work on exciting projects with tight timelines, meaningful scope, and the opportunity to make an immediate impact. If you're someone who thrives when challenges are real, timelines are tight, and excellence is non-negotiable, this is the role for you.
This role is a contract role from May 4, 2026 through Sept 25, 2026.
You Will:
You Have:
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
Ready to apply?
Apply to Critical MassShare this job
The Art Director is responsible for conceptual development and the execution of creative deliverables. These responsibilities include creating and communicating concepts, implementing marketing strategies and developing interactive design solutions. Reporting to the Creative Director, the Art Director will work with and lead a collaborative team of designers, copywriters and production specialists. Balancing creative thinking with interpersonal skills, this person will demonstrate an ability to justify concepts to both the client and the project team.
Contract Details:
You Will:
You Have:
*The range listed below is hourly*
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
Ready to apply?
Apply to Critical MassShare this job
The Art Director is responsible for conceptual development and the execution of creative deliverables. These responsibilities include creating and communicating concepts, implementing marketing strategies and developing interactive design solutions. Reporting to the Creative Director, the Art Director will work with and lead a collaborative team of designers, copywriters and production specialists. Balancing creative thinking with interpersonal skills, this person will demonstrate an ability to justify concepts to both the client and the project team.
Contract Details:
You Will:
You Have:
*The range listed below is hourly*
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
Ready to apply?
Apply to Critical MassCookies & analytics
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