Freelance Senior Copywriter

undefined ago • 5 Years + • Editorial • $114,400 PA - $124,800 PA

Job Summary

Job Description

As a Freelance Senior Copywriter, you are a seasoned writer who loves to collaborate with creatives and strategists to bring a digital voice to life. Grasping communication challenges and devising solutions that are both elegant and on-brand is what you do. You have a copy editor’s eye for detail and a managing editor’s ability to juggle multiple campaigns at once.
Must have:
  • Write clear, concise, and engaging copy for emails, landing pages, paid/unpaid ads and more.
  • Interact with stakeholders to understand business objectives and audience demographics.
  • Partner with designers, marketers, and product teams to ensure cohesive messaging.
  • Uphold the client’s brand voice across all written content.
  • Stay up-to-date with industry trends, audience behaviors, and competitor activities.
  • Use research and data-driven insights to inform content strategy.

Job Details

As a Freelance Senior Copywriter, you are a seasoned writer who loves to collaborate with creatives and strategists to bring a digital voice to life. Grasping communication challenges and devising solutions that are both elegant and on-brand is what you do. You have a copy editor’s eye for detail and a managing editor’s ability to juggle multiple campaigns at once.

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 also a dynamic leader who can run point on copy development for complex campaigns, and be an inspiring mentor to junior copy staff.

You Will:

  • Write clear, concise, and engaging copy for emails, landing pages, paid/unpaid ads and more.
  • Interact with stakeholders to understand business objectives and audience demographics
  • Partner with designers, marketers, and product teams to ensure cohesive messaging.
  • Uphold the client’s brand voice across all written content.
  • Stay up-to-date with industry trends, audience behaviors, and competitor activities.
  • Use research and data-driven insights to inform content strategy.

You Have:

  • 5+ years’ experience as a copywriter or editor in an agency, publishing, or journalism environment—including experience with interactive media and direct marketing.
  • Ability to internalize and consistently adhere to internal brand guidelines
  • Exceptional writing and editing skills, including the ability to quickly review, edit, and QA a wide variety of comms.
  • Proven aptitude for quick, creative thinking with acute attention to detail within demanding deadlines.
  • A strong understanding of marketing (especially direct marketing) and advertising principles.
  • The ability to work on multiple projects simultaneously and effectively juggle diverse writing demands.

We continually review ranges to address skills, experience and markets. Base salaries are determined during our interview process, by assessing a number of factors that include, but aren’t limited to, a candidate’s experience and skills relative to the scope and responsibilities of the position. For current CM employees, tenure will also be a consideration.

Salary Range

$55 - $60 CAD

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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