Senior Copywriter

criticalmass· Creative
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📍 London

About this role

Critical Mass London are looking for an experienced copywriter to come and join the team based in Southwark. 

As a 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 understand the world-class digital experiences we create and the important role copy plays in them. You’re also a dynamic leader who can champion a creative direction with clients and be an inspiring mentor to junior copy staff.

You will: 

  • Interact with project teams to understand business objectives and audience demographics
  • Review copy (alongside design) to align with channel and platform guidelines
  • Provide guidance on creative revisions to up-level content within the Airbnb voice and tone
  • Work with cross-functional partners to drive consensus across teams and advocate for solutions that balance the needs of our guests and hosts with our business goals
  • Work with design partners and CD to audit existing templates/guidelines and create/revise new templates and guidelines as needed to empower our partners to better execute their email projects (prior to Marcom’s review).
  • Partner with designers, art directors, and creative directors to tackle projects and move the business forward
  • Work on multiple projects simultaneously

You have: 

  • 5+ years’ experience as a copywriter in an agency or client-side environment - including full understanding of interactivity and the web, emails, landing pages and marketing/advertising
  • Passion for design and eagerness to collaborate with other creative people
  • Ability to internalize and consistently adhere to internal brand guidelines
  • Understanding how copy can influence creative overall
  • Exception writing skills, including the ability to write in a range of voices and styles for varied contexts with diverse audience
  • Proven aptitude for quick, creative thinking with acute attention to detail within demanding deadlines
  • A strong understanding of UX/UI concepts and practices

What We Offer:

  • Global maternity and parental leave
  • Competitive benefits packages
  • 25 days annual leave plus bank holidays
  • Access to online services for families and new parents
  • Summer Fridays (off at 3:00 PM local time every Friday)
  • Diversity and Inclusion Board with 12 affinity groups
  • Internal learning and development programs
  • Enterprise-wide employee discounts

Our new hires & employees are the future of our organization, and we want to set you up for long-term success.  In effort to do so, we expect our team to work from an office a minimum of 3 days a week.

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 

Frequently Asked Questions

Is the salary disclosed for the Senior Copywriter position at criticalmass?
The salary for this Senior Copywriter role at criticalmass is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Senior Copywriter position at criticalmass located?
This Senior Copywriter role at criticalmass is based in London. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Senior Copywriter at criticalmass belong to?
This Senior Copywriter position is part of the Creative department at criticalmass. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior Copywriter position at criticalmass?
Click the "Apply Now" button on this page. You will be redirected to criticalmass's official application portal hosted on greenhouse where you can submit your application directly.
When was the Senior Copywriter job at criticalmass posted?
This Senior Copywriter position at criticalmass was posted on May 21, 2026. Apply as soon as possible — early applications are often reviewed first.
Senior Copywriter
criticalmass
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You'll be redirected to criticalmass's official application page on Greenhouse.