Freelance Senior Copywriter

1 Week ago • 5 Years + • Editorial

Job Summary

Job Description

As a Freelance Senior Copywriter, you are a seasoned storyteller who collaborates with creatives and strategists to bring a digital voice to life. You excel at devising imaginative solutions for communication challenges, maintaining high standards of copywriting, and working on multiple projects simultaneously. You possess a well-rounded knowledge of social media, usability, online marketing, and traditional advertising, and are adept at using tools, including an awareness of AI. You are self-starting, motivated, and capable of producing top-quality work with minimal oversight.
Must have:
  • Participate in strategic brainstorming, campaign and brief development, and creative execution.
  • 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.
  • 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.
  • Handle a high volume of varied work without letting standards slip.
  • Liaise directly with clients and present work confidently.
  • 5+ years’ experience writing 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.
  • Experience managing complex and rapidly evolving copy decks.

Job Details

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. Words are your love language and 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’re adept at using tools to help you with your trade and you know AI isn’t something that can be ignored. When confronted with something new or unfamiliar, you seize the opportunity to learn and expand your skillset. You’re self-starting, able to create top-quality work with minimal oversight, and motivated by a desire to help your team produce exceptional results.

You Will:

  • Participate in strategic brainstorming, campaign and brief development, and creative execution.
  • 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.
  • 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.
  • Handle a high volume of varied work without letting standards slip.
  • Liaise directly with clients and present work confidently.

You Have:

  • 5+ years’ experience writing 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.
  • Experience managing complex and rapidly evolving copy decks.

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/educacionconsumidor/consejospracticos.aspx_

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About The Company

Critical Mass is a team of 1,800 inspired folks based in 12 offices around the world, providing full-service digital capabilities for the greatest brands on Earth. Our secret sauce is our uncompromising design standards, our relentless focus on customers, and an ability to put powerful new technologies to work for our clients.


We work with the best—Apple, Nike, Mars Wrigley, Nissan, Diageo, Airbnb, BMW, BNY Mellon, Johnson & Johnson, and many more—brands who strive for connected digital ecosystems and unparalleled experiences. We help them get there by gaining deep insight into their consumers and orchestrating data, AI, design, media, and tech stacks around human stories.


We’re a global agency founded in Canada, but digital is our home. If you know us, then you know we’re a special, quirky place that attracts big talent and tiny egos. (We actually give out a “so f-n nice” award—lots of them). But just because we’re friendly doesn’t mean we’re not a force to be reckoned with. We’re driven. Relentless. And we live our values. We’re Critical Mass, but our friends call us CM. Please call us CM!

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