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Critical Mass

Senior Copywriter, Future Opportunities

Sorry, this job was removed at 04:17 p.m. (MST) on Monday, Sep 29, 2025
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In-Office
6 Locations
Easy Apply
In-Office
6 Locations

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Please note, you are not applying to an active job opening. We are always striving to build our network of talent and our needs are constantly changing. You will be added to our network of talent, and we will share relevant opportunities with you as they arise.

As a Freelance Senior Copywriter, you are a seasoned storyteller who loves to collaborate with creatives and strategists to bring a digital voice to life. Grasping communication challenges and devising imaginative solutions that are both brilliant and on-brand is what you do. You’re also know the ins and outs of site copy, banner ads, digital activations, interactive scripts, and other online marketing.

To demonstrate high-quality, insightful approaches with outstanding results, you pull from a wide variety of experiences on past projects. Copy is your comfort-zone, but you’ve got a well-rounded knowledge of the broader industry—social media, usability, online marketing, and traditional advertising. 

You will:
  • Lead concept development.
  • Partner with designers, art directors, and creative directors to bring concepts to life.
  • Work closely with art directors and designers to ensure copy tone and style are consistent with visual tone and style.
  • Participate in strategic brainstorming, campaign development, creative brief development, and creative execution.
  • Work on multiple projects simultaneously.
  • Interact with project teams to understand business objectives and audience demographics.
  • Translate creative direction and copy points from creative briefs into engaging and effective copy concepts.
  • Maintain high standards of copywriting and exercise quality control.

You have:

  • 3-5+ years’ experience as a copywriter in an agency environment—including experience with interactive media and direct marketing.
  • Exceptional writing skills, including the ability to write in a range of voices and styles for varied projects with diverse audiences.
  • Proven aptitude for quick, creative thinking with acute attention to detail within demanding deadlines.
  • A keen enthusiasm for and demonstrable understanding of Web trends and technologies.
  • A strong understanding of marketing (especially direct marketing) and advertising principles.
  • Experience with brainstorming, campaign development, creative brief development, and creative execution.
  • The ability to work on multiple projects simultaneously and effectively juggle diverse writing demand.

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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